+ // from http://vserver.13thfloor.at/Experimental/SYSCALL/syscall_shiny10.h
-#ifndef __syscall_retval
-#define __syscall_retval(v) do { } while(0)
-#endif
+#ifndef __SYSCALL_NEW_H
+#define __SYSCALL_NEW_H
-#ifndef __syscall_error
-#define __syscall_error(e) do { errno = (e); } while(0)
-#endif
+/* Copyright (C) 2005-2006 Herbert Pötzl
-#define __check(pos, reg) \
- ".ifnc " pos ", " reg "\n\t" \
- ".err\n\t" \
- ".endif\n\t"
+ global config options
-#ifndef __stringify0
-#define __stringify0(val) #val
-#endif
+ __sysc_setret ... set return value (default none)
+ __sysc_seterr ... set error value (default errno)
-#ifndef __stringify
-#define __stringify(val) __stringify0(val)
-#endif
-#define __comment(name) \
- "\t/* kernel sys_" #name "[" __stringify(__NR_##name) "] */"
+ arch specific config
+ __sysc_reg_cid ... the callid (if define), immediate otherwise
-/* *****************************************
- ALPHA ALPHA ALPHA ALPHA *
- alpha kernel interface */
-
-#if defined(__alpha__)
+ __sysc_reg(n) ... syscall argument registers
-/* The Alpha calling convention doesn't use the stack until
- after the first six arguments have been passed in registers.
-
- scnr: v0($0)
- args: a0($16), a1($17), a2($18), a3($19), a4($20), a5($21)
- sret: v0($0)
- serr: a3($19) (!=0, err=sret)
-*/
+ __sysc_reg_res ... simple result register (either that or)
+ __sysc_reg_ret ... complex result register (and)
+ __sysc_reg_err ... complex error register
+ __sysc_cmd_pre ... preparation command(s) __sysc_pre(n)
+ __sysc_cmd_sys ... the syscall __sysc_cmd(n)
+ __sysc_cmd_fin ... syscall finalization __sysc_fin(n)
-#define __syscall_return(type, ret, err) do { \
- __syscall_retval(ret); \
- if (err) { \
- int __err = (ret); \
- __syscall_error(__err); \
- ret = -1; \
- } \
- return (type) ret; \
-} while (0)
+ __sysc_clobber ... clobbered registers (default memory)
+ __sysc_max_err ... maximum error number (for simple result)
-#define __syscall_regdef(name, reg) \
- register long __sc_##name __asm__ (reg)
+ __sysc_errc(r,e) ... error condition (e cmplx)
+ __sysc_retv(t,r,e) ... syscall return value (e cmplx)
-#define __syscall_regval(name, reg, val) \
- register long __sc_##name __asm__ (reg) = (long)(val)
-
-#define __syscall_clobbers \
- "$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", \
- "$22", "$23", "$24", "$25", "$27", "$28", "memory" \
+ if gcc cannot be trusted
+ __sysc_load(r,a) ... asm code for register load
+ __sysc_save(r,a) ... asm code to save result(s)
+ __sysc_limm(r,i) ... asm code to load immediate
+ __sysc_rcon(n) ... syscall register constraint
+ __sysc_regs ... list of input regs for clobber
+ __sysc_type ... register type
+ __sysc_aout ... asm code output constraint
-#define _syscall0(type, name) \
-type name(void) \
-{ \
- long __sc_ret, __sc_err; \
- { \
- __syscall_regval(v0, "$0", __NR_##name); \
- __syscall_regdef(a3, "$19"); \
- \
- __asm__ __volatile__ ( \
- __check("%0%1%2", "$0$19$0") \
- "callsys" __comment(name) \
- : "=r"(__sc_v0), "=r"(__sc_a3) \
- : "0"(__sc_v0) \
- : "$16", "$17", "$18", "$20", "$21", \
- __syscall_clobbers \
- ); \
- __sc_ret = __sc_v0; \
- __sc_err = __sc_a3; \
- } \
- __syscall_return(type, __sc_ret, __sc_err); \
-}
+ if all else fails
-#define _syscall1(type, name, type1, arg1) \
-type name(type1 arg1) \
-{ \
- long __sc_ret, __sc_err; \
- { \
- __syscall_regval(v0, "$0", __NR_##name); \
- __syscall_regval(a0, "$16", arg1); \
- __syscall_regdef(a3, "$19"); \
- \
- __asm__ __volatile__ ( \
- __check("%0%1%2%3", "$0$19$0$16") \
- "callsys" __comment(name) \
- : "=r"(__sc_v0), "=r"(__sc_a3) \
- : "0"(__sc_v0), \
- "r"(__sc_a0) \
- : "$17", "$18", "$20", "$21", \
- __syscall_clobbers \
- ); \
- __sc_ret = __sc_v0; \
- __sc_err = __sc_a3; \
- } \
- __syscall_return(type, __sc_ret, __sc_err); \
-}
+ __sc_asmload(n,N,...) ... asm code to prepare arguments
+ __sc_asmsysc(n,N) ... asm code to execute syscall
+ __sc_asmsave(n) ... asm code to store results
-#define _syscall2(type, name, type1, arg1, type2, arg2) \
-type name(type1 arg1, type2 arg2) \
-{ \
- long __sc_ret, __sc_err; \
- { \
- __syscall_regval(v0, "$0", __NR_##name); \
- __syscall_regval(a0, "$16", arg1); \
- __syscall_regval(a1, "$17", arg2); \
- __syscall_regdef(a3, "$19"); \
- \
- __asm__ __volatile__ ( \
- __check("%0%1%2%3%4", "$0$19$0$16$17") \
- "callsys" __comment(name) \
- : "=r"(__sc_v0), "=r"(__sc_a3) \
- : "0"(__sc_v0), \
- "r"(__sc_a0), "r"(__sc_a1) \
- : "$18", "$20", "$21", \
- __syscall_clobbers \
- ); \
- __sc_ret = __sc_v0; \
- __sc_err = __sc_a3; \
- } \
- __syscall_return(type, __sc_ret, __sc_err); \
-}
+*/
-#define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
-type name(type1 arg1, type2 arg2, type3 arg3) \
-{ \
- long __sc_ret, __sc_err; \
- { \
- __syscall_regval(v0, "$0", __NR_##name); \
- __syscall_regval(a0, "$16", arg1); \
- __syscall_regval(a1, "$17", arg2); \
- __syscall_regval(a2, "$18", arg3); \
- __syscall_regdef(a3, "$19"); \
- \
- __asm__ __volatile__ ( \
- __check("%0%1%2%3%4%5", "$0$19$0$16$17$18") \
- "callsys" __comment(name) \
- : "=r"(__sc_v0), "=r"(__sc_a3) \
- : "0"(__sc_v0), \
- "r"(__sc_a0), "r"(__sc_a1), "r"(__sc_a2) \
- : "$20", "$21", \
- __syscall_clobbers \
- ); \
- __sc_ret = __sc_v0; \
- __sc_err = __sc_a3; \
- } \
- __syscall_return(type, __sc_ret, __sc_err); \
-}
-#define _syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
-{ \
- long __sc_ret, __sc_err; \
- { \
- __syscall_regval(v0, "$0", __NR_##name); \
- __syscall_regval(a0, "$16", arg1); \
- __syscall_regval(a1, "$17", arg2); \
- __syscall_regval(a2, "$18", arg3); \
- __syscall_regval(a3, "$19", arg4); \
- \
- __asm__ __volatile__ ( \
- __check("%0%1%2%3%4%5%6", "$0$19$0$16$17$18$19") \
- "callsys" __comment(name) \
- : "=r"(__sc_v0), "=r"(__sc_a3) \
- : "0"(__sc_v0), \
- "r"(__sc_a0), "r"(__sc_a1), "r"(__sc_a2), \
- "1"(__sc_a3) \
- : "$20", "$21", \
- __syscall_clobbers \
- ); \
- __sc_ret = __sc_v0; \
- __sc_err = __sc_a3; \
- } \
- __syscall_return(type, __sc_ret, __sc_err); \
-}
-#define _syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4, type5, arg5) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \
-{ \
- long __sc_ret, __sc_err; \
- { \
- __syscall_regval(v0, "$0", __NR_##name); \
- __syscall_regval(a0, "$16", arg1); \
- __syscall_regval(a1, "$17", arg2); \
- __syscall_regval(a2, "$18", arg3); \
- __syscall_regval(a3, "$19", arg4); \
- __syscall_regval(a4, "$20", arg5); \
- \
- __asm__ __volatile__ ( \
- __check("%0%1%2%3%4%5%6%7", "$0$19$0$16$17$18$19$20") \
- "callsys" __comment(name) \
- : "=r"(__sc_v0), "=r"(__sc_a3) \
- : "0"(__sc_v0), \
- "r"(__sc_a0), "r"(__sc_a1), "r"(__sc_a2), \
- "1"(__sc_a3), "r"(__sc_a4) \
- : "$21", \
- __syscall_clobbers \
- ); \
- __sc_ret = __sc_v0; \
- __sc_err = __sc_a3; \
- } \
- __syscall_return(type, __sc_ret, __sc_err); \
-}
-#define _syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4, type5, arg5, type6, arg6) \
-type name (type1 arg1, type2 arg2, type3 arg3, \
- type4 arg4, type5 arg5, type6 arg6) \
-{ \
- long __sc_ret, __sc_err; \
- { \
- __syscall_regval(v0, "$0", __NR_##name); \
- __syscall_regval(a0, "$16", arg1); \
- __syscall_regval(a1, "$17", arg2); \
- __syscall_regval(a2, "$18", arg3); \
- __syscall_regval(a3, "$19", arg4); \
- __syscall_regval(a4, "$20", arg5); \
- __syscall_regval(a5, "$21", arg6); \
- \
- __asm__ __volatile__ ( \
- __check("%0%1%2%3%4%5%6%7%8", \
- "$0$19$0$16$17$18$19$20$21") \
- "callsys" __comment(name) \
- : "=r"(__sc_v0), "=r"(__sc_a3) \
- : "0"(__sc_v0), \
- "r"(__sc_a0), "r"(__sc_a1), "r"(__sc_a2), \
- "1"(__sc_a3), "r"(__sc_a4), "r"(__sc_a5) \
- : __syscall_clobbers \
- ); \
- __sc_ret = __sc_v0; \
- __sc_err = __sc_a3; \
- } \
- __syscall_return(type, __sc_ret, __sc_err); \
-}
+/* *****************************************
+ ALPHA ALPHA ALPHA ALPHA *
+ alpha kernel interface */
+
+#if defined(__alpha__)
+
+/* The Alpha calling convention doesn't use the stack until
+ after the first six arguments have been passed in registers.
+
+ scnr: v0($0)
+ args: a1($16), a2($17), a3($18), a4($19), a5($20), a6($21)
+ sret: r0($0)
+ serr: e0($19) (!=0, err=sret)
+ call: callsys
+ clob: memory
+*/
+
+#define __sysc_reg_cid "$0"
+#define __sysc_reg_ret "$0"
+#define __sysc_reg_err "$19"
+#define __sysc_cmd_sys "callsys"
+
+#define __sysc_reg(n) __arg_##n\
+ ("$16", "$17", "$18", "$19", "$20", "$21")
+
+#define __sysc_clobber __sysc_regs, \
+ "$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", \
+ "$22", "$23", "$24", "$25", "$27", "$28", "memory" \
/* *****************************************
- ARM ARM ARM ARM *
+ ARM ARM ARM ARM *
arm kernel interface */
#elif defined(__arm__)
-/* The Arm calling convention uses stack args after four arguments
- but the Linux kernel gets up to seven arguments in registers.
+/* The Arm calling convention uses stack args after four arguments
+ but the Linux kernel gets up to seven arguments in registers.
scnr: imm
- args: a1(r0), a2(r1), a3(r2), a4(r3), v1(r4), v2(r5),
- sret: a1(r0)
- serr: (err= sret > (unsigned)-EMAXERRNO)
+ args: a1(r0), a2(r1), a3(r2), a4(r3), a5(r4), a6(r5),
+ sret: r0(r0)
+ serr: (sret >= (unsigned)-EMAXERRNO)
+ call: swi
+ clob: memory
*/
-#ifndef EMAXERRNO
-#define EMAXERRNO 125
-#endif
+#define __sysc_max_err 125
+#define __sysc_reg_res "r0"
+#define __sysc_cmd_sys "swi %0"
-#define __syscall_errcon(res) \
- ((unsigned long)(res) >= (unsigned long)(-EMAXERRNO))
+#define __sysc_reg(n) __arg_##n\
+ ("r0", "r1", "r2", "r3", "r4", "r5")
-#define __syscall_return(type, res) do { \
- __syscall_retval(res); \
- if (__syscall_errcon(res)) { \
- int __err = -(res); \
- __syscall_error(__err); \
- res = -1; \
- } \
- return (type) res; \
-} while (0)
+#define __sysc_clobber __sysc_regs, "memory"
-#define __syscall_regdef(name, reg) \
- register int __sc_##name __asm__ (reg)
+#warning syscall arch arm not tested yet
-#define __syscall_regval(name, reg, val) \
- register int __sc_##name __asm__ (reg) = (int)(val)
-#define _syscall0(type, name) \
-type name(void) \
-{ \
- long __sc_res; \
- { \
- __syscall_regdef(a1, "r0"); \
- \
- __asm__ __volatile__ ( \
- __check("%0", "r0") \
- "swi %1" __comment(name) \
- : "=r"(__sc_a1) \
- : "i"(__NR_##name) \
- : "memory" \
- ); \
- __sc_res = __sc_a1; \
- } \
- __syscall_return(type, __sc_res); \
-}
+/* *****************************************
+ CRIS CRIS CRIS CRIS *
+ cris v10 kernel interface */
-#define _syscall1(type, name, type1, arg1) \
-type name(type1 arg1) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a1, "r0", arg1); \
- \
- __asm__ __volatile__ ( \
- __check("%0%2", "r0r0") \
- "swi %1" __comment(name) \
- : "=r"(__sc_a1) \
- : "i"(__NR_##name), \
- "0"(__sc_a1) \
- : "memory" \
- ); \
- __sc_res = __sc_a1; \
- } \
- __syscall_return(type, __sc_res); \
-}
+#elif defined(__cris__)
-#define _syscall2(type, name, type1, arg1, type2, arg2) \
-type name(type1 arg1, type2 arg2) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a1, "r0", arg1); \
- __syscall_regval(a2, "r1", arg2); \
- \
- __asm__ __volatile__ ( \
- __check("%0%2%3", "r0r0r1") \
- "swi %1" __comment(name) \
- : "=r"(__sc_a1) \
- : "i"(__NR_##name), \
- "0"(__sc_a1), "r"(__sc_a2) \
- : "memory" \
- ); \
- __sc_res = __sc_a1; \
- } \
- __syscall_return(type, __sc_res); \
-}
+/* The Cris calling convention uses stack args after four arguments
+ but the Linux kernel gets up to six arguments in registers.
-#define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
-type name(type1 arg1, type2 arg2, type3 arg3) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a1, "r0", arg1); \
- __syscall_regval(a2, "r1", arg2); \
- __syscall_regval(a3, "r2", arg3); \
- \
- __asm__ __volatile__ ( \
- __check("%0%2%3%4", "r0r0r1r2") \
- "swi %1" __comment(name) \
- : "=r"(__sc_a1) \
- : "i"(__NR_##name), \
- "0"(__sc_a1), "r"(__sc_a2), "r"(__sc_a3) \
- : "memory" \
- ); \
- __sc_res = __sc_a1; \
- } \
- __syscall_return(type, __sc_res); \
-}
+ scnr: id(r9)
+ args: a1(r10), a2(r11), a3(r12), a4(r13), a5(mof), a6(srp),
+ sret: r0(r10)
+ serr: (sret >= (unsigned)-EMAXERRNO)
+ call: break 13
+ clob: memory
+*/
-#define _syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a1, "r0", arg1); \
- __syscall_regval(a2, "r1", arg2); \
- __syscall_regval(a3, "r2", arg3); \
- __syscall_regval(a4, "r3", arg4); \
- \
- __asm__ __volatile__ ( \
- __check("%0%2%3%4%5", "r0r0r1r2r3") \
- "swi %1" __comment(name) \
- : "=r"(__sc_a1) \
- : "i"(__NR_##name), \
- "0"(__sc_a1), "r"(__sc_a2), "r"(__sc_a3), \
- "r"(__sc_a4) \
- : "memory" \
- ); \
- __sc_res = __sc_a1; \
- } \
- __syscall_return(type, __sc_res); \
-}
-
-#define _syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4, type5, arg5) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a1, "r0", arg1); \
- __syscall_regval(a2, "r1", arg2); \
- __syscall_regval(a3, "r2", arg3); \
- __syscall_regval(a4, "r3", arg4); \
- __syscall_regval(v1, "r4", arg5); \
- \
- __asm__ __volatile__ ( \
- __check("%0%2%3%4%5%6", "r0r0r1r2r3r4") \
- "swi %1" __comment(name) \
- : "=r"(__sc_a1) \
- : "i"(__NR_##name), \
- "0"(__sc_a1), "r"(__sc_a2), "r"(__sc_a3), \
- "r"(__sc_a4), "r"(__sc_v1) \
- : "memory" \
- ); \
- __sc_res = __sc_a1; \
- } \
- __syscall_return(type, __sc_res); \
-}
+#define __sysc_max_err 125
+#define __sysc_reg_cid "r9"
+#define __sysc_reg_res "r0"
+#define __sysc_cmd_sys "break 13"
+
+#define __sysc_regs "r10", "r11", "r12", "r13"
+#define __sysc_reg(n) __arg_##n\
+ ("r10", "r11", "r12", "r13", "r0", "srp")
+
+#define __sysc_pre(n) __casm(n,5,0,"move r0,mof",)
+
+#define __sysc_clobber __sysc_regs, "memory"
+
+#warning syscall arch cris not tested yet
-#define _syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4, type5, arg5, type6, arg6) \
-type name (type1 arg1, type2 arg2, type3 arg3, \
- type4 arg4, type5 arg5, type6 arg6) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a1, "r0", arg1); \
- __syscall_regval(a2, "r1", arg2); \
- __syscall_regval(a3, "r2", arg3); \
- __syscall_regval(a4, "r3", arg4); \
- __syscall_regval(v1, "r4", arg5); \
- __syscall_regval(v2, "r5", arg6); \
- \
- __asm__ __volatile__ ( \
- __check("%0%2%3%4%5%6%7", "r0r0r1r2r3r4r5") \
- "swi %1" __comment(name) \
- : "=r"(__sc_a1) \
- : "i"(__NR_##name), \
- "0"(__sc_a1), "r"(__sc_a2), "r"(__sc_a3), \
- "r"(__sc_a4), "r"(__sc_v1), "r"(__sc_v2) \
- : "memory" \
- ); \
- __sc_res = __sc_a1; \
- } \
- __syscall_return(type, __sc_res); \
-}
/* *****************************************
- CRIS CRIS CRIS CRIS *
- cris v10 kernel interface */
+ FRV FRV FRV FRV *
+ frv kernel interface */
-#elif defined(__cris__)
+#elif defined(__frv__)
-/* The Cris calling convention uses stack args after four arguments
- but the Linux kernel gets up to six arguments in registers.
+/* The C calling convention on FR-V uses the gr8-gr13 registers
+ for the first six arguments, the remainder is spilled onto the
+ stack. the linux kernel syscall interface does so too.
- scnr: (r9)
- args: (r10), (r11), (r12), (r13), (mof), (srp),
- sret: (r10)
- serr: (err= sret > (unsigned)-EMAXERRNO)
+ scnr: id(gr7)
+ args: a1(gr8), a2(gr9), a3(gr10), a4(gr11), a5(gr12), a6(gr13)
+ sret: r0(gr8)
+ serr: (sret >= (unsigned)-EMAXERRNO)
+ call: tra gr0,gr0
+ clob: memory
*/
-#ifndef EMAXERRNO
-#define EMAXERRNO 125
-#endif
+#define __sysc_max_err 125
+#define __sysc_reg_cid "gr7"
+#define __sysc_reg_res "gr8"
+#define __sysc_cmd_sys "tira gr0,#0"
-#define __syscall_errcon(res) \
- ((unsigned long)(res) >= (unsigned long)(-EMAXERRNO))
+#define __sysc_reg(n) __arg_##n\
+ ("gr8", "gr9", "gr10", "gr11", "gr12", "gr13")
-#define __syscall_return(type, res) do { \
- __syscall_retval(res); \
- if (__syscall_errcon(res)) { \
- int __err = -(res); \
- __syscall_error(__err); \
- res = -1; \
- } \
- return (type) res; \
-} while (0)
+#define __sysc_clobber __sysc_regs, "memory"
-#define __syscall_regdef(name, reg) \
- register long __sc_##name __asm__ (reg)
+#warning syscall arch frv not tested yet
-#define __syscall_regval(name, reg, val) \
- register long __sc_##name __asm__ (reg) = (long)(val)
-#define _syscall0(type, name) \
-type name(void) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a0, "r9", __NR_##name); \
- __syscall_regdef(a1, "r10"); \
- \
- __asm__ __volatile__ ( \
- __check("%0%1", "$r10$r9") \
- "break 13" __comment(name) \
- : "=r"(__sc_a1) \
- : "r"(__sc_a0) \
- : "memory", "srp", "r13", "r12", "r11" \
- ); \
- __sc_res = __sc_a1; \
- } \
- __syscall_return(type, __sc_res); \
-}
-#define _syscall1(type, name, type1, arg1) \
-type name(type1 arg1) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a0, "r9", __NR_##name); \
- __syscall_regval(a1, "r10", arg1); \
- \
- __asm__ __volatile__ ( \
- __check("%0%1%2", "$r10$r9$r10") \
- "break 13" __comment(name) \
- : "=r"(__sc_a1) \
- : "r"(__sc_a0), \
- "0"(__sc_a1) \
- : "memory", "srp", "r13", "r12", "r11" \
- ); \
- __sc_res = __sc_a1; \
- } \
- __syscall_return(type, __sc_res); \
-}
+/* *****************************************
+ H8300 H8300 H8300 H8300 *
+ h8/300 kernel interface */
-#define _syscall2(type, name, type1, arg1, type2, arg2) \
-type name(type1 arg1, type2 arg2) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a0, "r9", __NR_##name); \
- __syscall_regval(a1, "r10", arg1); \
- __syscall_regval(a2, "r11", arg2); \
- \
- __asm__ __volatile__ ( \
- __check("%0%1%2%3", "$r10$r9$r10$r11") \
- "break 13" __comment(name) \
- : "=r"(__sc_a1) \
- : "r"(__sc_a0), \
- "0"(__sc_a1), "r"(__sc_a2) \
- : "memory", "srp", "r13", "r12" \
- ); \
- __sc_res = __sc_a1; \
- } \
- __syscall_return(type, __sc_res); \
-}
+#elif defined(__H8300__)
-#define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
-type name(type1 arg1, type2 arg2, type3 arg3) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a0, "r9", __NR_##name); \
- __syscall_regval(a1, "r10", arg1); \
- __syscall_regval(a2, "r11", arg2); \
- __syscall_regval(a3, "r12", arg3); \
- \
- __asm__ __volatile__ ( \
- __check("%0%1%2%3%4", "$r10$r9$r10$r11$r12") \
- "break 13" __comment(name) \
- : "=r"(__sc_a1) \
- : "r"(__sc_a0), \
- "0"(__sc_a1), "r"(__sc_a2), "r"(__sc_a3) \
- : "memory", "srp", "r13" \
- ); \
- __sc_res = __sc_a1; \
- } \
- __syscall_return(type, __sc_res); \
-}
+/* The H8/300 C calling convention passes the first three
+ arguments in registers. However the linux kernel calling
+ convention passes the first six arguments in registers
+ er1-er6
-#define _syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a0, "r9", __NR_##name); \
- __syscall_regval(a1, "r10", arg1); \
- __syscall_regval(a2, "r11", arg2); \
- __syscall_regval(a3, "r12", arg3); \
- __syscall_regval(a4, "r13", arg4); \
- \
- __asm__ __volatile__ ( \
- __check("%0%1%2%3%4%5", "$r10$r9$r10$r11$r12$r13") \
- "break 13" __comment(name) \
- : "=r"(__sc_a1) \
- : "r"(__sc_a0), \
- "0"(__sc_a1), "r"(__sc_a2), "r"(__sc_a3), \
- "r"(__sc_a4) \
- : "memory", "srp" \
- ); \
- __sc_res = __sc_a1; \
- } \
- __syscall_return(type, __sc_res); \
-}
-
-#define _syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4, type5, arg5) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a0, "r9", __NR_##name); \
- __syscall_regval(a1, "r10", arg1); \
- __syscall_regval(a2, "r11", arg2); \
- __syscall_regval(a3, "r12", arg3); \
- __syscall_regval(a4, "r13", arg4); \
- \
- __asm__ __volatile__ ( \
- __check("%0%1%2%3%4%5", "$r10$r9$r10$r11$r12$r13") \
- "move %6,$mof\n\t" \
- "break 13" __comment(name) \
- : "=r"(__sc_a1) \
- : "r"(__sc_a0), \
- "0"(__sc_a1), "r"(__sc_a2), "r"(__sc_a3), \
- "r"(__sc_a4), \
- "g"((long)arg5) \
- : "memory", "srp" \
- ); \
- __sc_res = __sc_a1; \
- } \
- __syscall_return(type, __sc_res); \
-}
+ scnr: id(er0)
+ args: a1(er1), a2(er2), a3(er3), a4(er4), a5(er5), a6(er6)
+ sret: r0(er0)
+ serr: (sret >= (unsigned)-EMAXERRNO)
+ call: trapa #0
+ clob: memory
+*/
-#define _syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4, type5, arg5, type6, arg6) \
-type name (type1 arg1, type2 arg2, type3 arg3, \
- type4 arg4, type5 arg5, type6 arg6) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a0, "r9", __NR_##name); \
- __syscall_regval(a1, "r10", arg1); \
- __syscall_regval(a2, "r11", arg2); \
- __syscall_regval(a3, "r12", arg3); \
- __syscall_regval(a4, "r13", arg4); \
- \
- __asm__ __volatile__ ( \
- __check("%0%1%2%3%4%5", "$r10$r9$r10$r11$r12$r13") \
- "move %6,$mof\n\t" \
- "move %7,$srp\n\t" \
- "break 13" __comment(name) \
- : "=r"(__sc_a1) \
- : "r"(__sc_a0), \
- "0"(__sc_a1), "r"(__sc_a2), "r"(__sc_a3), \
- "r"(__sc_a4), \
- "g"((long)arg5), "g"((long)arg6) \
- : "memory" \
- ); \
- __sc_res = __sc_a1; \
- } \
- __syscall_return(type, __sc_res); \
-}
+#define __sysc_max_err 125
+#define __sysc_reg_res "er0"
+#define __sysc_reg(n) __arg_##n\
+ ("er1", "er2", "er3", "er4", "er5", "er6")
-/* *****************************************
- FRV FRV FRV FRV *
- frv kernel interface */
+#define __sysc_clobber "memory"
-#elif defined(__frv__)
+#define __sc_asmload(n,N,...) __sc_asm ( \
+ __casm(n,1,1, "mov.l %0,er1" , )\
+ __casm(n,2,1, "mov.l %1,er2" , )\
+ __casm(n,3,1, "mov.l %2,er3" , )\
+ __casm(n,4,1, "mov.l %3,er4" , )\
+ __casm(n,5,1, "mov.l %4,er5" , )\
+ __casm(n,6,1, "mov.l er6,@-sp" , )\
+ __casm(n,6,1, "mov.l %5,er6" , )\
+ ""::__sc_iregs(n,__VA_ARGS__):__sysc_regs)
+
+#define __sysc_cmd_pre "mov.l %0,er0"
+#define __sysc_cmd_sys "trapa #0"
+#define __sysc_fin(n) __casm(n,6,0,"mov.l @sp+,er6",)
+
+#warning syscall arch h8300 not tested yet
-#warning syscall arch frv not implemented yet
/* *****************************************
- H8300 H8300 H8300 H8300 *
- h8/300 kernel interface */
+ HPPA HPPA HPPA HPPA *
+ hppa/64 kernel interface */
-#elif defined(__h8300__)
+#elif defined(__hppa__)
-#warning syscall arch h8300 not implemented yet
+/* The hppa calling convention uses r26-r23 for the first 4
+ arguments, the rest is spilled onto the stack. However the
+ Linux kernel passes the first six arguments in the registers
+ r26-r21.
+
+ The system call number MUST ALWAYS be loaded in the delay
+ slot of the ble instruction, or restarting system calls
+ WILL NOT WORK.
+
+ scnr: id(r20)
+ args: a1(r26), a2(r25), a3(r24), a4(r23), a5(r22), a6(r21)
+ sret: r0(r28)
+ serr: (sret >= (unsigned)-EMAXERRNO)
+ call: ble 0x100(%%sr2, %%r0)
+ clob: r1, r2, (r4), r20, r29, r31, memory
+ picr: pr(r19)
+*/
+
+#define __sysc_max_err 4095
+#define __sysc_reg_res "r28"
+
+#define __sysc_reg(n) __arg_##n\
+ ("r26", "r25", "r24", "r23", "r22", "r21")
+
+#define __sysc_cmd_sys "ble 0x100(%%sr2,%%r0)"
+
+#define __sysc_pre(n) \
+ __pasm(n,1,1, "copy %%r19, %%r4" , )
+
+#define __sysc_fin(n) \
+ __casm(n,1,1, "ldi %0,%%r20" , )\
+ __pasm(n,1,1, "copy %%r4, %%r19" , )
+
+#ifndef __PIC__
+#define __sysc_clobber __sysc_regs, \
+ "r1", "r2", "r20", "r29", "r31", "memory"
+#else
+#define __sysc_clobber __sysc_regs, \
+ "r1", "r2", "r4", "r20", "r29", "r31", "memory"
+#endif
/* *****************************************
- I386 I386 I386 I386 *
+ I386 I386 I386 I386 *
i386 kernel interface */
#elif defined(__i386__)
-/* The x86 calling convention uses stack args for all arguments,
- but the Linux kernel passes the first six arguments in the
+/* The x86 calling convention uses stack args for all arguments,
+ but the Linux kernel passes the first six arguments in the
following registers: ebx, ecx, edx, esi, edi, ebp.
- scnr: a0(eax)
+ scnr: id(eax)
args: a1(ebx), a2(ecx), a3(edx), a4(esi), a5(edi), a6(ebp)
- sret: a0(eax)
- serr: (err= sret > (unsigned)-EMAXERRNO)
+ sret: r0(eax)
+ serr: (sret >= (unsigned)-EMAXERRNO)
+ call: int 0x80
+ picr: pr(ebx)
+ clob: memory
*/
-#ifndef EMAXERRNO
-#define EMAXERRNO 129
+#define __sysc_max_err 129
+#define __sysc_reg_res "eax"
+#define __sysc_cmd_sys "int $0x80"
+
+#ifndef __PIC__
+#define __sysc_regs "ebx", "ecx", "edx", "esi", "edi"
+#else
+#define __sysc_regs "ecx", "edx", "esi", "edi"
#endif
-#define __syscall_errcon(res) \
- ((unsigned long)(res) >= (unsigned long)(-EMAXERRNO))
+#define __sc_asmload(n,N,...) __sc_asm ( \
+ __casm(n,6,1, "movl %5,%%eax" , )\
+ __casm(n,5,1, "movl %4,%%edi" , )\
+ __casm(n,4,1, "movl %3,%%esi" , )\
+ __casm(n,3,1, "movl %2,%%edx" , )\
+ __casm(n,2,1, "movl %1,%%ecx" , )\
+ __pasm(n,1,1, "pushl %%ebx" , )\
+ __casm(n,1,1, "movl %0,%%ebx" , )\
+ __casm(n,6,1, "pushl %%ebp" , )\
+ ""::__sc_iregs(n,__VA_ARGS__):__sysc_clobber)
-#define __syscall_return(type, res) do { \
- __syscall_retval(res); \
- if (__syscall_errcon(res)) { \
- int __err = -(res); \
- __syscall_error(__err); \
- res = -1; \
- } \
- return (type) res; \
-} while (0)
+#define __sc_asmsave(n)
-#define __syscall_regdef(name, reg) \
- register long __sc_##name __asm__ (reg)
+#define __sysc_pre(n) \
+ __casm(n,6,1, "movl %%eax,%%ebp" , )\
+ __casm(n,0,1, "movl %1,%%eax" , )\
-#define __syscall_regval(name, reg, val) \
- register long __sc_##name __asm__ (reg) = (long)(val)
+#define __sysc_fin(n) \
+ __casm(n,6,1, "popl %%ebp" , )\
+ __pasm(n,1,1, "popl %%ebx" , )\
+#define __sysc_aout "=a"(__res)
+#define __sysc_clobber __sysc_regs, "memory"
-#define _syscall0(type, name) \
-type name(void) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a0, "eax", __NR_##name); \
- \
- __asm__ volatile ( \
- __check("%0%1", "%%eax%%eax") \
- "int $0x80" __comment(name) \
- : "=a"(__sc_a0) \
- : "0"(__sc_a0) \
- : "memory" \
- ); \
- __sc_res = __sc_a0; \
- } \
- __syscall_return(type, __sc_res); \
-}
-#define _syscall1(type, name, type1, arg1) \
-type name(type1 arg1) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a0, "eax", __NR_##name); \
- __syscall_regval(a1, "ebx", arg1); \
- \
- __asm__ volatile ( \
- __check("%0%1%2", "%%eax%%eax%%ebx") \
- "int $0x80" __comment(name) \
- : "=a"(__sc_a0) \
- : "0"(__sc_a0), \
- "r" (__sc_a1) \
- : "memory" \
- ); \
- __sc_res = __sc_a0; \
- } \
- __syscall_return(type, __sc_res); \
-}
+/* *****************************************
+ IA64 IA64 IA64 IA64 *
+ ia64 kernel interface */
-#define _syscall2(type, name, type1, arg1, type2, arg2) \
-type name(type1 arg1, type2 arg2) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a0, "eax", __NR_##name); \
- __syscall_regval(a1, "ebx", arg1); \
- __syscall_regval(a2, "ecx", arg2); \
- \
- __asm__ volatile ( \
- __check("%0%1%2%3", "%%eax%%eax%%ebx%%ecx") \
- "int $0x80" __comment(name) \
- : "=a"(__sc_a0) \
- : "0"(__sc_a0), \
- "r" (__sc_a1), "r"(__sc_a2) \
- : "memory" \
- ); \
- __sc_res = __sc_a0; \
- } \
- __syscall_return(type, __sc_res); \
-}
+#elif defined(__ia64__)
-#define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
-type name(type1 arg1, type2 arg2, type3 arg3) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a0, "eax", __NR_##name); \
- __syscall_regval(a1, "ebx", arg1); \
- __syscall_regval(a2, "ecx", arg2); \
- __syscall_regval(a3, "edx", arg3); \
- \
- __asm__ volatile ( \
- __check("%0%1%2%3%4", "%%eax%%eax%%ebx%%ecx%%edx") \
- "int $0x80" __comment(name) \
- : "=a"(__sc_a0) \
- : "0"(__sc_a0), \
- "r" (__sc_a1), "r"(__sc_a2), "r" (__sc_a3) \
- : "memory" \
- ); \
- __sc_res = __sc_a0; \
- } \
- __syscall_return(type, __sc_res); \
-}
+/* The ia64 calling convention uses out0-out7 to pass the first
+ eight arguments (mapped via register windows).
+ scnr: id(r15)
+ args: a1(out0), a2(out1), ... a5(out4), a6(out5)
+ sret: r0(r8)
+ serr: e0(r10)
+ call: break 0x100000
+ clob: out6/7, r2/3/9, r11-r14, r16-r31, p6-p15, f6-f15, b6/7
+*/
-#define _syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a0, "eax", __NR_##name); \
- __syscall_regval(a1, "ebx", arg1); \
- __syscall_regval(a2, "ecx", arg2); \
- __syscall_regval(a3, "edx", arg3); \
- __syscall_regval(a4, "esi", arg4); \
- \
- __asm__ volatile ( \
- __check("%0%1%2%3%4%5", \
- "%%eax%%eax%%ebx%%ecx%%edx%%esi") \
- "int $0x80" __comment(name) \
- : "=a"(__sc_a0) \
- : "0"(__sc_a0), \
- "r" (__sc_a1), "r"(__sc_a2), "r" (__sc_a3), \
- "r" (__sc_a4) \
- : "memory" \
- ); \
- __sc_res = __sc_a0; \
- } \
- __syscall_return(type, __sc_res); \
-}
-#define _syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4, type5, arg5) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a0, "eax", __NR_##name); \
- __syscall_regval(a1, "ebx", arg1); \
- __syscall_regval(a2, "ecx", arg2); \
- __syscall_regval(a3, "edx", arg3); \
- __syscall_regval(a4, "esi", arg4); \
- __syscall_regval(a5, "edi", arg5); \
- \
- __asm__ volatile ( \
- __check("%0%1%2%3%4%5%6", \
- "%%eax%%eax%%ebx%%ecx%%edx%%esi%%edi") \
- "int $0x80" __comment(name) \
- : "=a"(__sc_a0) \
- : "0"(__sc_a0), \
- "r" (__sc_a1), "r"(__sc_a2), "r" (__sc_a3), \
- "r" (__sc_a4), "r"(__sc_a5) \
- : "memory" \
- ); \
- __sc_res = __sc_a0; \
- } \
- __syscall_return(type, __sc_res); \
-}
+#define __sysc_reg_ret "r8"
+#define __sysc_reg_err "r10"
+#define __sysc_reg_cid "r15"
+#define __sysc_cmd_sys "break.i 0x100000"
-#define _syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4, type5, arg5, type6, arg6) \
-type name (type1 arg1, type2 arg2, type3 arg3, \
- type4 arg4, type5 arg5, type6 arg6) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a0, "eax", __NR_##name); \
- __syscall_regval(a1, "ebx", arg1); \
- __syscall_regval(a2, "ecx", arg2); \
- __syscall_regval(a3, "edx", arg3); \
- __syscall_regval(a4, "esi", arg4); \
- __syscall_regval(a5, "edi", arg5); \
- __syscall_regval(a6, "ebp", arg6); \
- \
- __asm__ volatile ( \
- __check("%0%1%2%3%4%5%6%7", \
- "%%eax%%eax%%ebx%%ecx%%edx%%esi%%edi%%ebp") \
- "int $0x80" __comment(name) \
- : "=a"(__sc_a0) \
- : "0"(__sc_a0), \
- "r" (__sc_a1), "r"(__sc_a2), "r" (__sc_a3), \
- "r" (__sc_a4), "r"(__sc_a5), "r" (__sc_a6) \
- : "memory" \
- ); \
- __sc_res = __sc_a0; \
- } \
- __syscall_return(type, __sc_res); \
-}
+#define __sysc_errc(r,e) ((e) == -1)
+#define __sysc_reg(n) __arg_##n\
+ ("out0", "out1", "out2", "out3", "out4", "out5")
-/* *****************************************
- IA64 IA64 IA64 IA64 *
- ia64 kernel interface */
+#define __sysc_clobber __sysc_regs, \
+ "out6", "out7", "r2", "r3", "r9", "r11", "r12", "r13", \
+ "r14", "r16", "r17", "r18", "r19", "r20", "r21", "r22", \
+ "r23", "r24", "r25", "r26", "r27", "r28", "r29", "r30", \
+ "r31", "p6", "p7", "p8", "p9", "p10", "p11", "p12", "p13", \
+ "p14", "p15", "f6", "f7", "f8", "f9", "f10", "f11", "f12", \
+ "f13", "f14", "f15", "f16", "b6", "b7", "cc", "memory"
-#elif defined(__ia64__)
+#warning syscall arch ia64 not tested yet
-#warning syscall arch ia64 not implemented yet
/* *****************************************
- M32R IM32R M32R M32R *
+ M32R M32R M32R M32R *
m32r kernel interface */
-#elif defined(__m32r__)
+#elif defined(__M32R__)
+
+/* The m32r calling convention uses r0-r7 to pass the first
+ eight arguments (mapped via register windows).
+
+ scnr: id(r0)
+ args: a1(r1), a2(r2), a3(r3), a4(r4), a5(r5), a6(r6)
+ sret: r0(r0)
+ serr: (sret >= (unsigned)-EMAXERRNO)
+ call: trap #2
+ clob: out6/7, r2/3/9, r11-r14, r16-r31, p6-p15, f6-f15, b6/7
+*/
+
+#define __sysc_max_err 125
+#define __sysc_reg_cid "r7"
+#define __sysc_reg_res "r0"
+#define __sysc_cmd_sys "trap #2"
+
+#define __sysc_reg(n) __arg_##n\
+ ("r0", "r1", "r2", "r3", "r4", "r5")
+
+#define __sysc_clobber __sysc_regs, "memory"
+
+#warning syscall arch m32r not tested yet
-#warning syscall arch m32r not implemented yet
/* *****************************************
- M68K M68K M68K M68K *
+ M68K M68K M68K M68K *
m68k kernel interface */
#elif defined(__m68000__)
-#warning syscall arch m68k not implemented yet
+#error syscall arch m68k not implemented yet
+
/* *****************************************
- MIPS MIPS MIPS MIPS *
+ MIPS MIPS MIPS MIPS *
mips kernel interface */
-#elif defined(__mips__)
+#elif defined(__mips__)
-#warning syscall arch mips not implemented yet
+/* The ABIO32 calling convention uses a0-a3 to pass the first
+ four arguments, the rest is passed on the userspace stack. The 5th arg
+ starts at 16($sp).
+
+ ABIN32 and ABI64 pass 6 args in a0-a3, t0-t1.
+
+ scnr: id(v0)
+ args: a1(a0), a2(a1), a3(a2), a4(a3), a5(16($sp)), a6(20($sp))
+ sret: r0(v0)
+ serr: e0(a3)
+ call: syscall
+ clob: at, v0, t0-t7, t8-t9
+*/
+
+#define __sysc_reg_cid "v0"
+#define __sysc_reg_ret "v0"
+#define __sysc_reg_err "a3"
+#define __sysc_cmd_sys "syscall"
+
+#define __sysc_reg(n) __arg_##n\
+ ("a0","a1","a2","a3", "t0", "t1")
+
+#define __sysc_clobber "$1", "$3", "$8", "$9", "$10", "$11", "$12", \
+ "$13", "$14", "$15", "$24", "$25", "memory"
+
+#if _MIPS_SIM == _ABIO32
+#define __sysc_pre(n) \
+ __casm(n,5,1,"addiu $sp,$sp,-32",) \
+ __casm(n,6,1,"sw $9,20($sp)",) \
+ __casm(n,5,1,"sw $8, 16($sp)",)
+#define __sysc_fin(n) \
+ __casm(n,5,1,"addiu $sp,$sp,32",)
+#elif (_MIPS_SIM == _ABIN32) || (_MIPS_SIM == _ABI64)
+#warning syscall arch mips with ABI N32 and 64 not tested yet
+#else
+#error unknown mips ABI version
+#endif
/* *****************************************
- HPPA HPPA HPPA HPPA *
- hppa kernel interface */
+ PPC PPC PPC PPC *
+ ppc/64 kernel interface */
-#elif defined(__hppa__)
+#elif defined(__powerpc__)
-/* The hppa calling convention uses r26-r23 for the first 4
- arguments, the rest is spilled onto the stack. However the
- Linux kernel passes the first six arguments in the registers
- r26-r21.
+/* The powerpc calling convention uses r3-r10 to pass the first
+ eight arguments, the remainder is spilled onto the stack.
- The system call number MUST ALWAYS be loaded in the delay
- slot of the ble instruction, or restarting system calls
- WILL NOT WORK.
+ scnr: id(r0)
+ args: a1(r3), a2(r4), a3(r5), a4(r6), a5(r7), a6(r8)
+ sret: r0(r3)
+ serr: (carry)
+ call: sc
+ clob: cr0, ctr
+*/
+
+
+#define __sysc_reg_cid "r0"
+#define __sysc_reg_ret "r3"
+#define __sysc_reg_err "r0"
+
+#define __sysc_errc(r,e) ((e) & 0x10000000)
+
+#define __sysc_reg(n) __arg_##n\
+ ("r3", "r4", "r5", "r6", "r7", "r8")
+
+#define __sysc_cmd_sys "sc"
+#define __sysc_cmd_fin "mfcr 0"
+
+#define __sysc_clobber __sysc_regs, \
+ "r9", "r10", "r11", "r12", "cr0", "ctr", "memory"
+
+
+
+/* *****************************************
+ S390 S390 S390 S390 *
+ s390/x kernel interface */
+
+#elif defined(__s390__)
+
+/* The s390x calling convention passes the first five arguments
+ in r2-r6, the remainder is spilled onto the stack. However
+ the Linux kernel passes the first six arguments in r2-r7.
- scnr: r20
- args: r26, r25, r24, r23, r22, r21
- sret: r28
- serr: (err= sret > (unsigned)-EMAXERRNO)
- clob: r1, r2, r4, r20, r29, r31, memory
+ scnr: imm, id(r1)
+ args: a1(r2), a2(r3), a3(r4), a4(r5), a5(r6), a6(r7)
+ sret: r0(r2)
+ serr: (sret >= (unsigned)-EMAXERRNO)
+ call: svc
+ clob: memory
*/
-#ifndef EMAXERRNO
-#define EMAXERRNO 4095
-#endif
+#define __sysc_max_err 4095
+#define __sysc_reg_cid "r1"
+#define __sysc_reg_res "r2"
+#define __sysc_cmd_sys "svc 0"
-#define __syscall_errcon(res) \
- ((unsigned long)(res) >= (unsigned long)(-EMAXERRNO))
+#define __sysc_regtyp unsigned long
-#define __syscall_return(type, res) do { \
- __syscall_retval(res); \
- if (__syscall_errcon(res)) { \
- int __err = -(res); \
- __syscall_error(__err); \
- res = -1; \
- } \
- return (type) res; \
-} while (0)
+#define __sysc_reg(n) __arg_##n\
+ ("r2", "r3", "r4", "r5", "r6", "r7")
-#define __syscall_clobbers \
- "%r1", "%r2", "%r4", "%r20", "%r29", "%r31", "memory"
+#define __sysc_clobber __sysc_regs, "memory"
-#define __syscall_regdef(name, reg) \
- register unsigned long __sc_##name __asm__ (reg)
-#define __syscall_regval(name, reg, val) \
- register unsigned long __sc_##name __asm__ (reg) = \
- (unsigned long)(val)
+/* *****************************************
+ SH SH SH SH *
+ sh kernel interface */
-#define _syscall0(type, name) \
-type name(void) \
-{ \
- long __sc_res; \
- { \
- __syscall_regdef(ret, "r28"); \
- \
- __asm__ __volatile__ ( \
- __check("%0", "%%r28") \
- "ble 0x100(%%sr2, %%r0)" \
- __comment(name) "\n\t" \
- "ldi %1, %%r20" \
- : "=r"(__sc_ret) \
- : "i"(__NR_##name) \
- : "%r21", "%r22", "%r23", \
- "%r24", "%r25", "%r26", \
- __syscall_clobbers \
- ); \
- __sc_res = __sc_ret; \
- } \
- __syscall_return(type, __sc_res); \
-}
+#elif defined(__sh__) && !defined(__SH5__)
-#define _syscall1(type, name, type1, arg1) \
-type name(type1 arg1) \
-{ \
- long __sc_res; \
- { \
- __syscall_regdef(ret, "r28"); \
- __syscall_regval(a1, "r26", arg1); \
- \
- __asm__ __volatile__ ( \
- __check("%0%2", "%%r28%%r26") \
- "ble 0x100(%%sr2, %%r0)" \
- __comment(name) "\n\t" \
- "ldi %1, %%r20" \
- : "=r"(__sc_ret) \
- : "i"(__NR_##name), \
- "r"(__sc_a1) \
- : "%r21", "%r22", "%r23", "%r24", "%r25", \
- __syscall_clobbers \
- ); \
- __sc_res = __sc_ret; \
- } \
- __syscall_return(type, __sc_res); \
-}
+/* The SuperH calling convention passes the first four arguments
+ in r4-r7, the remainder is spilled onto the stack. However
+ the Linux kernel passes the remainder in r0-r2.
-#define _syscall2(type, name, type1, arg1, type2, arg2) \
-type name(type1 arg1, type2 arg2) \
-{ \
- long __sc_res; \
- { \
- __syscall_regdef(ret, "r28"); \
- __syscall_regval(a1, "r26", arg1); \
- __syscall_regval(a2, "r25", arg2); \
- \
- __asm__ __volatile__ ( \
- __check("%0%2%3", "%%r28%%r26%%r25") \
- "ble 0x100(%%sr2, %%r0)" \
- __comment(name) "\n\t" \
- "ldi %1, %%r20" \
- : "=r"(__sc_ret) \
- : "i"(__NR_##name), \
- "r"(__sc_a1), "r"(__sc_a2) \
- : "%r21", "%r22", "%r23", "%r24", \
- __syscall_clobbers \
- ); \
- __sc_res = __sc_ret; \
- } \
- __syscall_return(type, __sc_res); \
-}
+ scnr: id(r3)
+ args: a1(r4), a2(r5), a3(r6), a4(r7), a5(r0), a6(r1)
+ sret: r0(r0)
+ serr: (sret >= (unsigned)-EMAXERRNO)
+ call: trapa #0x1x (x=#args)
+ clob: memory
+*/
-#define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
-type name(type1 arg1, type2 arg2, type3 arg3) \
-{ \
- long __sc_res; \
- { \
- __syscall_regdef(ret, "r28"); \
- __syscall_regval(a1, "r26", arg1); \
- __syscall_regval(a2, "r25", arg2); \
- __syscall_regval(a3, "r24", arg3); \
- \
- __asm__ __volatile__ ( \
- __check("%0%2%3%4", "%%r28%%r26%%r25%%r24") \
- "ble 0x100(%%sr2, %%r0)" \
- __comment(name) "\n\t" \
- "ldi %1, %%r20" \
- : "=r"(__sc_ret) \
- : "i"(__NR_##name), \
- "r"(__sc_a1), "r"(__sc_a2), "r"(__sc_a3) \
- : "%r21", "%r22", "%r23", \
- __syscall_clobbers \
- ); \
- __sc_res = __sc_ret; \
- } \
- __syscall_return(type, __sc_res); \
-}
-
-#define _syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
-{ \
- long __sc_res; \
- { \
- __syscall_regdef(ret, "r28"); \
- __syscall_regval(a1, "r26", arg1); \
- __syscall_regval(a2, "r25", arg2); \
- __syscall_regval(a3, "r24", arg3); \
- __syscall_regval(a4, "r23", arg4); \
- \
- __asm__ __volatile__ ( \
- __check("%0%2%3%4%5", "%%r28%%r26%%r25%%r24%%r23") \
- "ble 0x100(%%sr2, %%r0)" \
- __comment(name) "\n\t" \
- "ldi %1, %%r20" \
- : "=r"(__sc_ret) \
- : "i"(__NR_##name), \
- "r"(__sc_a1), "r"(__sc_a2), "r"(__sc_a3), \
- "r"(__sc_a4) \
- : "%r21", "%r22", \
- __syscall_clobbers \
- ); \
- __sc_res = __sc_ret; \
- } \
- __syscall_return(type, __sc_res); \
-}
-
-#define _syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4, type5, arg5) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \
-{ \
- long __sc_res; \
- { \
- __syscall_regdef(ret, "r28"); \
- __syscall_regval(a1, "r26", arg1); \
- __syscall_regval(a2, "r25", arg2); \
- __syscall_regval(a3, "r24", arg3); \
- __syscall_regval(a4, "r23", arg4); \
- __syscall_regval(a5, "r22", arg5); \
- \
- __asm__ __volatile__ ( \
- __check("%0%2%3%4%5%6", \
- "%%r28%%r26%%r25%%r24%%r23%%r22") \
- "ble 0x100(%%sr2, %%r0)" \
- __comment(name) "\n\t" \
- "ldi %1, %%r20" \
- : "=r"(__sc_ret) \
- : "i"(__NR_##name), \
- "r"(__sc_a1), "r"(__sc_a2), "r"(__sc_a3), \
- "r"(__sc_a4), "r"(__sc_a5) \
- : "%r21", \
- __syscall_clobbers \
- ); \
- __sc_res = __sc_ret; \
- } \
- __syscall_return(type, __sc_res); \
-}
+#define __sysc_max_err 4095
+#define __sysc_reg_cid "r3"
+#define __sysc_reg_res "r0"
-#define _syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4, type5, arg5, type6, arg6) \
-type name (type1 arg1, type2 arg2, type3 arg3, \
- type4 arg4, type5 arg5, type6 arg6) \
-{ \
- long __sc_res; \
- { \
- __syscall_regdef(ret, "r28"); \
- __syscall_regval(a1, "r26", arg1); \
- __syscall_regval(a2, "r25", arg2); \
- __syscall_regval(a3, "r24", arg3); \
- __syscall_regval(a4, "r23", arg4); \
- __syscall_regval(a5, "r22", arg5); \
- __syscall_regval(a6, "r21", arg6); \
- \
- __asm__ __volatile__ ( \
- __check("%0%2%3%4%5%6%7", \
- "%%r28%%r26%%r25%%r24%%r23%%r22%%r21") \
- "ble 0x100(%%sr2, %%r0)" \
- __comment(name) "\n\t" \
- "ldi %1, %%r20" \
- : "=r"(__sc_ret) \
- : "i"(__NR_##name), \
- "r"(__sc_a1), "r"(__sc_a2), "r"(__sc_a3), \
- "r"(__sc_a4), "r"(__sc_a5), "r"(__sc_a6) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_ret; \
- } \
- __syscall_return(type, __sc_res); \
-}
+#define __sysc_reg(n) __arg_##n\
+ ("r4", "r5", "r6", "r7", "r0", "r1")
+
+#define __sysc_cmd(n) "trapa #0x1" __stringify(n)
+
+#define __rep_6(x) x x x x x x
+#define __sysc_cmd_fin __rep_6("or r0,r0\n\t")
+
+#define __sysc_clobber __sysc_regs, "memory"
+
+#warning syscall arch sh not tested yet
/* *****************************************
- PPC64 PPC64 PPC64 PPC64 *
- ppc64 kernel interface */
+ SH64 SH64 SH64 SH64 *
+ sh64 kernel interface */
+
+#elif defined(__sh__) && defined(__SH5__)
+
+/* The SuperH-5 calling convention passes the first eight
+ arguments in r2-r9
+
+ scnr: id(r9)
+ args: a1(r2), a2(r3), a3(r4), a4(r5), a5(r6), a6(r7)
+ sret: r0(r9)
+ serr: (sret >= (unsigned)-EMAXERRNO)
+ call: trapa #0x1x (x=#args)
+ clob: memory
+*/
-#elif defined(__powerpc64__)
+#define __sysc_max_err 4095
+#define __sysc_reg_res "r9"
+#define __sysc_cmd_sys "trapa r9"
+
+#define __sysc_reg(n) __arg_##n\
+ ("r2", "r3", "r4", "r5", "r6", "r7")
+
+#define __sc_asmsysc(n,N) __sc_asm_vol ( \
+ __casm(n,0,1, "movi %0,r9" , )\
+ __casm(n,0,1, __sc_cmds(n,N) , )\
+ ""::"i"(__sc_id(N) | 0x1##n << 16) : __sysc_clobber)
+
+#define __sysc_clobber __sysc_regs, "memory"
+
+#warning syscall arch sh64 not tested yet
-#warning syscall arch ppc64 not implemented yet
/* *****************************************
- PPC PPC PPC PPC *
- ppc kernel interface */
-
-#elif defined(__powerpc__)
-
-/* The powerpc calling convention uses r3-r10 to pass the first
- eight arguments, the remainder is spilled onto the stack.
-
- scnr: r0
- args: a1(r3), a2(r4), a3(r5), a4(r6), a5(r7), a6(r8)
- sret: r3
- serr: (carry)
- call: sc
- clob: cr0, ctr
+ SPARC64 SPARC64 SPARC64 SPARC64 *
+ sparc64 kernel interface */
+
+#elif defined(__sparc__)
+
+/* The sparc/64 calling convention uses o0-o5 to pass the first
+ six arguments (mapped via register windows).
+
+ scnr: id(g1)
+ args: a1(o0), a2(o1), a3(o2), a4(o3), a5(o4), a6(o5)
+ sret: r0(o0)
+ serr: (carry)
+ call: ta 0x6d, t 0x10
+ clob: g1-g6, g7?, o7?, f0-f31, cc
*/
-#define __syscall_errcon(err) (err & 0x10000000)
+#define __sysc_max_err 515
+#define __sysc_reg_cid "g1"
+#define __sysc_reg_ret "o0"
+#define __sysc_reg_err "l1"
-#define __syscall_return(type, ret, err) do { \
- __syscall_retval(ret); \
- if (__syscall_errcon(err)) { \
- int __err = (ret); \
- __syscall_error(__err); \
- ret = -1; \
- } \
- return (type) ret; \
-} while (0)
+#define __sysc_reg(n) __arg_##n\
+ ("o0", "o1", "o2", "o3", "o4", "o5")
-#define __syscall_regdef(name, reg) \
- register long __sc_##name __asm__ (reg)
+#ifdef __arch64__
+#define __sysc_cmd_sys "ta 0x6d"
+#else
+#define __sysc_cmd_sys "t 0x10"
+#endif
-#define __syscall_regval(name, reg, val) \
- register long __sc_##name __asm__ (reg) = (long)(val)
+#define __sysc_cmd_fin "addx %%g0,%%g0,%%l1"
-#define __syscall_clobbers \
- "r9", "r10", "r11", "r12", \
- "cr0", "ctr", "memory"
+#define __sysc_clobber __sysc_regs, \
+ "g2", "g3", "g4", "g5", "g6", \
+ "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", "f8", \
+ "f9", "f10", "f11", "f12", "f13", "f14", "f15", "f16", \
+ "f17", "f18", "f19", "f20", "f21", "f22", "f23", "f24", \
+ "f25", "f26", "f27", "f28", "f29", "f30", "f31", "f32", \
+ "f34", "f36", "f38", "f40", "f42", "f44", "f46", "f48", \
+ "f50", "f52", "f54", "f56", "f58", "f60", "f62", \
+ "cc", "memory"
-#define _syscall0(type, name) \
-type name(void) \
-{ \
- long __sc_ret, __sc_err; \
- { \
- __syscall_regval(r0, "r0", __NR_##name); \
- __syscall_regdef(a1, "r3"); \
- \
- __asm__ __volatile__ ( \
- "sc" __comment(name) "\n\t" \
- "mfcr %0" \
- : "=r"(__sc_r0), "=r"(__sc_a1) \
- : "0"(__sc_r0) \
- : "r4", "r5", "r6", "r7", "r8", \
- __syscall_clobbers \
- ); \
- __sc_ret = __sc_a1; \
- __sc_err = __sc_r0; \
- } \
- __syscall_return(type, __sc_ret, __sc_err); \
-}
+#warning syscall arch sparc not tested yet
-#define _syscall1(type, name, type1, arg1) \
-type name(type1 arg1) \
-{ \
- unsigned long __sc_ret, __sc_err; \
- { \
- __syscall_regval(r0, "r0", __NR_##name); \
- __syscall_regval(a1, "r3", arg1); \
- \
- __asm__ __volatile__ ( \
- "sc" __comment(name) "\n\t" \
- "mfcr %0" \
- : "=r"(__sc_r0), "=r"(__sc_a1) \
- : "0"(__sc_r0), \
- "1"(__sc_a1) \
- : "r4", "r5", "r6", "r7", "r8", \
- __syscall_clobbers \
- ); \
- __sc_ret = __sc_a1; \
- __sc_err = __sc_r0; \
- } \
- __syscall_return(type, __sc_ret, __sc_err); \
-}
-#define _syscall2(type, name, type1, arg1, type2, arg2) \
-type name(type1 arg1, type2 arg2) \
-{ \
- unsigned long __sc_ret, __sc_err; \
- { \
- __syscall_regval(r0, "r0", __NR_##name); \
- __syscall_regval(a1, "r3", arg1); \
- __syscall_regval(a2, "r4", arg2); \
- \
- __asm__ __volatile__ ( \
- "sc" __comment(name) "\n\t" \
- "mfcr %0" \
- : "=r"(__sc_r0), "=r"(__sc_a1) \
- : "0"(__sc_r0), \
- "1"(__sc_a1), "r"(__sc_a2) \
- : "r5", "r6", "r7", "r8", \
- __syscall_clobbers \
- ); \
- __sc_ret = __sc_a1; \
- __sc_err = __sc_r0; \
- } \
- __syscall_return(type, __sc_ret, __sc_err); \
-}
-#define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
-type name(type1 arg1, type2 arg2, type3 arg3) \
-{ \
- unsigned long __sc_ret, __sc_err; \
- { \
- __syscall_regval(r0, "r0", __NR_##name); \
- __syscall_regval(a1, "r3", arg1); \
- __syscall_regval(a2, "r4", arg2); \
- __syscall_regval(a3, "r5", arg3); \
- \
- __asm__ __volatile__ ( \
- "sc" __comment(name) "\n\t" \
- "mfcr %0" \
- : "=r"(__sc_r0), "=r"(__sc_a1) \
- : "0"(__sc_r0), \
- "1"(__sc_a1), "r"(__sc_a2), "r"(__sc_a3) \
- : "r6", "r7", "r8", \
- __syscall_clobbers \
- ); \
- __sc_ret = __sc_a1; \
- __sc_err = __sc_r0; \
- } \
- __syscall_return(type, __sc_ret, __sc_err); \
-}
+/* *****************************************
+ V850 V850 V850 V850 *
+ v850 kernel interface */
+#elif defined(__v850__)
-#define _syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
-{ \
- unsigned long __sc_ret, __sc_err; \
- { \
- __syscall_regval(r0, "r0", __NR_##name); \
- __syscall_regval(a1, "r3", arg1); \
- __syscall_regval(a2, "r4", arg2); \
- __syscall_regval(a3, "r5", arg3); \
- __syscall_regval(a4, "r6", arg4); \
- \
- __asm__ __volatile__ ( \
- "sc" __comment(name) "\n\t" \
- "mfcr %0" \
- : "=r"(__sc_r0), "=r"(__sc_a1) \
- : "0"(__sc_r0), \
- "1"(__sc_a1), "r"(__sc_a2), "r"(__sc_a3), \
- "r"(__sc_a4) \
- : "r7", "r8", \
- __syscall_clobbers \
- ); \
- __sc_ret = __sc_a1; \
- __sc_err = __sc_r0; \
- } \
- __syscall_return(type, __sc_ret, __sc_err); \
-}
+/* The V850 calling convention passes the first four arguments
+ in registers r6-r9, the rest is spilled onto the stack.
+ but the Linux kernel interface uses r6-r9 and r13/14.
-#define _syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4, type5, arg5) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \
-{ \
- unsigned long __sc_ret, __sc_err; \
- { \
- __syscall_regval(r0, "r0", __NR_##name); \
- __syscall_regval(a1, "r3", arg1); \
- __syscall_regval(a2, "r4", arg2); \
- __syscall_regval(a3, "r5", arg3); \
- __syscall_regval(a4, "r6", arg4); \
- __syscall_regval(a5, "r7", arg5); \
- \
- __asm__ __volatile__ ( \
- "sc" __comment(name) "\n\t" \
- "mfcr %0" \
- : "=r"(__sc_r0), "=r"(__sc_a1) \
- : "0"(__sc_r0), \
- "1"(__sc_a1), "r"(__sc_a2), "r"(__sc_a3), \
- "r"(__sc_a4), "r"(__sc_a5) \
- : "r8", \
- __syscall_clobbers \
- ); \
- __sc_ret = __sc_a1; \
- __sc_err = __sc_r0; \
- } \
- __syscall_return(type, __sc_ret, __sc_err); \
-}
+ scnr: id(r12)
+ args: a1(r6), a2(r7), a3(r8), a4(r9), a5(r13), a6(r14)
+ sret: r0(r10)
+ serr: (sret >= (unsigned)-EMAXERRNO)
+ call: trap 0, trap 1
+ clob: r1, r5, r11, r15-r19
+*/
+
+#define __sysc_max_err 515
+#define __sysc_reg_cid "r12"
+#define __sysc_reg_res "r10"
+
+#define __sysc_reg(n) __arg_##n\
+ ("r6", "r7", "r8", "r9", "r13", "r14")
+
+#define __sysc_cmd(n) __casm(n,4,0,"trap 1","trap 0")
+
+#define __sysc_clobber __sysc_regs, \
+ "r1", "r5", "r11", "r15", "r16", "r17", "r18", "r19", "memory"
+
+#warning syscall arch v850 not tested yet
-#define _syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4, type5, arg5, type6, arg6) \
-type name (type1 arg1, type2 arg2, type3 arg3, \
- type4 arg4, type5 arg5, type6 arg6) \
-{ \
- unsigned long __sc_ret, __sc_err; \
- { \
- __syscall_regval(r0, "r0", __NR_##name); \
- __syscall_regval(a1, "r3", arg1); \
- __syscall_regval(a2, "r4", arg2); \
- __syscall_regval(a3, "r5", arg3); \
- __syscall_regval(a4, "r6", arg4); \
- __syscall_regval(a5, "r7", arg5); \
- __syscall_regval(a6, "r8", arg6); \
- \
- __asm__ __volatile__ ( \
- "sc" __comment(name) "\n\t" \
- "mfcr %0" \
- : "=r"(__sc_r0), "=r"(__sc_a1) \
- : "0"(__sc_r0), \
- "1"(__sc_a1), "r"(__sc_a2), "r"(__sc_a3), \
- "r"(__sc_a4), "r"(__sc_a5), "r"(__sc_a6) \
- : __syscall_clobbers \
- ); \
- __sc_ret = __sc_a1; \
- __sc_err = __sc_r0; \
- } \
- __syscall_return(type, __sc_ret, __sc_err); \
-}
/* *****************************************
- S390X S390X S390X S390X *
- s390x kernel interface */
+ X86_64 X86_64 X86_64 X86_64 *
+ x86_64 kernel interface */
-#elif defined(__s390x__)
+#elif defined(__x86_64__)
-/* The s390x calling convention passes the first five arguments
- in r2-r6, the remainder is spilled onto the stack. However
- the Linux kernel passes the first six arguments in r2-r7.
+/* The x86_64 calling convention uses rdi, rsi, rdx, rcx, r8, r9
+ but the Linux kernel interface uses rdi, rsi, rdx, r10, r8, r9.
- scnr: imm, r1
- args: a1(r2), a2(r3), a3(r4), a4(r5), a5(r6), a6(r7)
- sret: r2
- serr: (err= sret > (unsigned)-EMAXERRNO)
- call: svc
- clob: memory
+ scnr: id(rax)
+ args: a1(rdi), a2(rsi), a3(rdx), a4(r10), a5(r8), a6(r9)
+ sret: r0(rax)
+ serr: (err= sret > (unsigned)-EMAXERRNO)
+ call: syscall
+ clob: rcx, r11
*/
-#ifndef EMAXERRNO
-#define EMAXERRNO 4095
-#endif
+#define __sysc_max_err 4095
+#define __sysc_reg_cid "rax"
+#define __sysc_reg_res "rax"
+#define __sysc_cmd_sys "syscall"
-#define __syscall_errcon(res) \
- ((unsigned long)(res) >= (unsigned long)(-EMAXERRNO))
+#define __sysc_reg(n) __arg_##n\
+ ("rdi", "rsi", "rdx", "r10", "r8", "r9")
-#define __syscall_return(type, res) do { \
- __syscall_retval(res); \
- if (__syscall_errcon(res)) { \
- int __err = -(res); \
- __syscall_error(__err); \
- res = -1; \
- } \
- return (type) res; \
-} while (0)
+#define __sysc_clobber __sysc_regs, \
+ "cc", "r11", "rcx", "memory"
-#define __syscall_regdef(name, reg) \
- register unsigned long __sc_##name __asm__ (reg)
+#define __sysc_aout "=a"(__res)
-#define __syscall_regval(name, reg, val) \
- register unsigned long __sc_##name __asm__ (reg) = \
- (unsigned long)(val)
+#else
+#error unknown kernel arch
+#endif
-#define __syscall_clobbers "memory"
-#define _syscall0(type, name) \
-type name(void) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(nr, "r1", __NR_##name); \
- __syscall_regdef(a1, "r2"); \
- \
- __asm__ volatile ( \
- __check("%0%1", "%%r2%%r1") \
- "svc 0" __comment(name) \
- : "=r"(__sc_a1) \
- : "r"(__sc_nr) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_a1; \
- } \
- __syscall_return(type, __sc_res); \
-}
-#define _syscall1(type, name, type1, arg1) \
-type name(type1 arg1) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(nr, "r1", __NR_##name); \
- __syscall_regval(a1, "r2", arg1); \
- \
- __asm__ volatile ( \
- __check("%0%1%2", "%%r2%%r1%%r2") \
- "svc 0" __comment(name) \
- : "=r"(__sc_a1) \
- : "r"(__sc_nr), \
- "0"(__sc_a1) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_a1; \
- } \
- __syscall_return(type, __sc_res); \
-}
-#define _syscall2(type, name, type1, arg1, type2, arg2) \
-type name(type1 arg1, type2 arg2) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(nr, "r1", __NR_##name); \
- __syscall_regval(a1, "r2", arg1); \
- __syscall_regval(a2, "r3", arg2); \
- \
- __asm__ volatile ( \
- __check("%0%1%2%3", "%%r2%%r1%%r2%%r3") \
- "svc 0" __comment(name) \
- : "=r"(__sc_a1) \
- : "r"(__sc_nr), \
- "0"(__sc_a1), "r"(__sc_a2) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_a1; \
- } \
- __syscall_return(type, __sc_res); \
-}
+ /* argument list */
-#define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
-type name(type1 arg1, type2 arg2, type3 arg3) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(nr, "r1", __NR_##name); \
- __syscall_regval(a1, "r2", arg1); \
- __syscall_regval(a2, "r3", arg2); \
- __syscall_regval(a3, "r4", arg3); \
- \
- __asm__ volatile ( \
- __check("%0%1%2%3%4", "%%r2%%r1%%r2%%r3%%r4") \
- "svc 0" __comment(name) \
- : "=r"(__sc_a1) \
- : "r"(__sc_nr), \
- "0"(__sc_a1), "r"(__sc_a2), "r"(__sc_a3) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_a1; \
- } \
- __syscall_return(type, __sc_res); \
-}
+#define __lst_6(x,a1,a2,a3,a4,a5,a6) __lst_5(x,a1,a2,a3,a4,a5),x(6,a6)
+#define __lst_5(x,a1,a2,a3,a4,a5) __lst_4(x,a1,a2,a3,a4),x(5,a5)
+#define __lst_4(x,a1,a2,a3,a4) __lst_3(x,a1,a2,a3),x(4,a4)
+#define __lst_3(x,a1,a2,a3) __lst_2(x,a1,a2),x(3,a3)
+#define __lst_2(x,a1,a2) __lst_1(x,a1),x(2,a2)
+#define __lst_1(x,a1) __lst_0(x,*)x(1,a1)
+#define __lst_0(x,a0)
-#define _syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(nr, "r1", __NR_##name); \
- __syscall_regval(a1, "r2", arg1); \
- __syscall_regval(a2, "r3", arg2); \
- __syscall_regval(a3, "r4", arg3); \
- __syscall_regval(a4, "r5", arg4); \
- \
- __asm__ volatile ( \
- __check("%0%1%2%3%4%5", "%%r2%%r1%%r2%%r3%%r4%%r5") \
- "svc 0" __comment(name) \
- : "=r"(__sc_a1) \
- : "r"(__sc_nr), \
- "0"(__sc_a1), "r"(__sc_a2), "r"(__sc_a3), \
- "r"(__sc_a4) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_a1; \
- } \
- __syscall_return(type, __sc_res); \
-}
+ /* argument concat */
-#define _syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4, type5, arg5) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(nr, "r1", __NR_##name); \
- __syscall_regval(a1, "r2", arg1); \
- __syscall_regval(a2, "r3", arg2); \
- __syscall_regval(a3, "r4", arg3); \
- __syscall_regval(a4, "r5", arg4); \
- __syscall_regval(a5, "r6", arg5); \
- \
- __asm__ volatile ( \
- __check("%0%1%2%3%4%5%6", \
- "%%r2%%r1%%r2%%r3%%r4%%r5%%r6") \
- "svc 0" __comment(name) \
- : "=r"(__sc_a1) \
- : "r"(__sc_nr), \
- "0"(__sc_a1), "r"(__sc_a2), "r"(__sc_a3), \
- "r"(__sc_a4), "r"(__sc_a5) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_a1; \
- } \
- __syscall_return(type, __sc_res); \
-}
+#define __con_6(x,a1,a2,a3,a4,a5,a6) __con_5(x,a1,a2,a3,a4,a5)x(6,a6)
+#define __con_5(x,a1,a2,a3,a4,a5) __con_4(x,a1,a2,a3,a4)x(5,a5)
+#define __con_4(x,a1,a2,a3,a4) __con_3(x,a1,a2,a3)x(4,a4)
+#define __con_3(x,a1,a2,a3) __con_2(x,a1,a2)x(3,a3)
+#define __con_2(x,a1,a2) __con_1(x,a1)x(2,a2)
+#define __con_1(x,a1) __con_0(x,*)x(1,a1)
+#define __con_0(x,a0)
-#define _syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4, type5, arg5, type6, arg6) \
-type name (type1 arg1, type2 arg2, type3 arg3, \
- type4 arg4, type5 arg5, type6 arg6) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(nr, "r1", __NR_##name); \
- __syscall_regval(a1, "r2", arg1); \
- __syscall_regval(a2, "r3", arg2); \
- __syscall_regval(a3, "r4", arg3); \
- __syscall_regval(a4, "r5", arg4); \
- __syscall_regval(a5, "r6", arg5); \
- __syscall_regval(a6, "r7", arg6); \
- \
- __asm__ volatile ( \
- __check("%0%1%2%3%4%5%6%7", \
- "%%r2%%r1%%r2%%r3%%r4%%r5%%r6%%r7") \
- "svc 0" __comment(name) \
- : "=r"(__sc_a1) \
- : "r"(__sc_nr), \
- "0"(__sc_a1), "r"(__sc_a2), "r"(__sc_a3), \
- "r"(__sc_a4), "r"(__sc_a5), "r"(__sc_a6) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_a1; \
- } \
- __syscall_return(type, __sc_res); \
-}
+ /* argument selection */
+#define __arg_0(...)
+#define __arg_1(a1,...) a1
+#define __arg_2(a1,a2,...) a2
+#define __arg_3(a1,a2,a3,...) a3
+#define __arg_4(a1,a2,a3,a4,...) a4
+#define __arg_5(a1,a2,a3,a4,a5,...) a5
+#define __arg_6(a1,a2,a3,a4,a5,a6) a6
-/* *****************************************
- S390 S390 S390 S390 *
- s390 kernel interface */
-#elif defined(__s390__)
+#ifdef __PIC__
+#define __pic(v) v
+#define __nopic(v)
+#else
+#define __pic(v)
+#define __nopic(v) v
+#endif
-#warning syscall arch s390 not implemented yet
+#define __casm_nl(v) v "\n\t"
+
+#define __casm(n,a,r,v,w) __casm_##n##a(v,w,r)
+
+#define __pasm(n,a,r,v,w) __pic(__casm(n,a,r,v,w))
+#define __Pasm(n,a,r,v,w) __nopic(__casm(n,a,r,v,w))
+
+#define __casm_use(q,r,v) v __casm_use_##q##r(__casm_nl(""))
+
+#define __casm_use_10(v)
+#define __casm_use_11(v) v
+#define __casm_use_12(v)
+#define __casm_use_13(v) v
+
+#define __casm_use_20(v)
+#define __casm_use_21(v)
+#define __casm_use_22(v) v
+#define __casm_use_23(v) v
+
+
+#define __casm_00(v,w,r) __casm_use(1,r,v)
+#define __casm_01(v,w,r) __casm_use(2,r,w)
+#define __casm_02(v,w,r) __casm_use(2,r,w)
+#define __casm_03(v,w,r) __casm_use(2,r,w)
+#define __casm_04(v,w,r) __casm_use(2,r,w)
+#define __casm_05(v,w,r) __casm_use(2,r,w)
+#define __casm_06(v,w,r) __casm_use(2,r,w)
+
+#define __casm_10(v,w,r) __casm_use(1,r,v)
+#define __casm_11(v,w,r) __casm_use(1,r,v)
+#define __casm_12(v,w,r) __casm_use(2,r,w)
+#define __casm_13(v,w,r) __casm_use(2,r,w)
+#define __casm_14(v,w,r) __casm_use(2,r,w)
+#define __casm_15(v,w,r) __casm_use(2,r,w)
+#define __casm_16(v,w,r) __casm_use(2,r,w)
+
+#define __casm_20(v,w,r) __casm_use(1,r,v)
+#define __casm_21(v,w,r) __casm_use(1,r,v)
+#define __casm_22(v,w,r) __casm_use(1,r,v)
+#define __casm_23(v,w,r) __casm_use(2,r,w)
+#define __casm_24(v,w,r) __casm_use(2,r,w)
+#define __casm_25(v,w,r) __casm_use(2,r,w)
+#define __casm_26(v,w,r) __casm_use(2,r,w)
+
+#define __casm_30(v,w,r) __casm_use(1,r,v)
+#define __casm_31(v,w,r) __casm_use(1,r,v)
+#define __casm_32(v,w,r) __casm_use(1,r,v)
+#define __casm_33(v,w,r) __casm_use(1,r,v)
+#define __casm_34(v,w,r) __casm_use(2,r,w)
+#define __casm_35(v,w,r) __casm_use(2,r,w)
+#define __casm_36(v,w,r) __casm_use(2,r,w)
+
+#define __casm_40(v,w,r) __casm_use(1,r,v)
+#define __casm_41(v,w,r) __casm_use(1,r,v)
+#define __casm_42(v,w,r) __casm_use(1,r,v)
+#define __casm_43(v,w,r) __casm_use(1,r,v)
+#define __casm_44(v,w,r) __casm_use(1,r,v)
+#define __casm_45(v,w,r) __casm_use(2,r,w)
+#define __casm_46(v,w,r) __casm_use(2,r,w)
+
+#define __casm_50(v,w,r) __casm_use(1,r,v)
+#define __casm_51(v,w,r) __casm_use(1,r,v)
+#define __casm_52(v,w,r) __casm_use(1,r,v)
+#define __casm_53(v,w,r) __casm_use(1,r,v)
+#define __casm_54(v,w,r) __casm_use(1,r,v)
+#define __casm_55(v,w,r) __casm_use(1,r,v)
+#define __casm_56(v,w,r) __casm_use(2,r,w)
+
+#define __casm_60(v,w,r) __casm_use(1,r,v)
+#define __casm_61(v,w,r) __casm_use(1,r,v)
+#define __casm_62(v,w,r) __casm_use(1,r,v)
+#define __casm_63(v,w,r) __casm_use(1,r,v)
+#define __casm_64(v,w,r) __casm_use(1,r,v)
+#define __casm_65(v,w,r) __casm_use(1,r,v)
+#define __casm_66(v,w,r) __casm_use(1,r,v)
+
+#define __casm_cn_0
+#define __casm_cn_1 ,
+#define __casm_cn_2 ,
+#define __casm_cn_3 ,
+#define __casm_cn_4 ,
+#define __casm_cn_5 ,
+#define __casm_cn_6 ,
+
+
+
+#define __sc_asm __asm__
+#define __sc_asm_vol __asm__ __volatile__
+
+#ifndef __sysc_setret
+#define __sysc_setret(v) do { } while(0)
+#endif
+#ifndef __sysc_seterr
+#define __sysc_seterr(e) do { errno = (e); } while(0)
+#endif
-/* *****************************************
- SH SH SH SH *
- sh kernel interface */
+#ifndef __stringify0
+#define __stringify0(val) #val
+#endif
-#elif defined(__sh__) && !defined(__SH5__)
+#ifndef __stringify
+#define __stringify(val) __stringify0(val)
+#endif
-#warning syscall arch sh not implemented yet
+#if !defined(__sysc_load) && !defined(__sysc_save)
+#if !defined(__sysc_limm) && !defined(__sc_asmload)
+#define __sc_trust
+#endif
+#endif
-/* *****************************************
- SH64 SH64 SH64 SH64 *
- sh64 kernel interface */
+#if defined(__sysc_reg_ret) && defined(__sysc_reg_err)
+#define __sc_complex
+#endif
-#elif defined(__sh__) && defined(__SH5__)
-#warning syscall arch sh64 not implemented yet
+#ifndef __sysc_type
+#define __sysc_type long
+#endif
+#define __sc_cast(v) (__sysc_type)(v)
-/* *****************************************
- SPARC64 SPARC64 SPARC64 SPARC64 *
- sparc64 kernel interface */
-#elif defined(__sparc__) && defined(__arch64__)
+#define __sc_reg(n) register __sysc_type n
+#define __sc_asm_reg(n,r) register __sysc_type n __sc_asm (r)
+#define __sc_asm_val(n,r,v) __sc_asm_reg(n,r) = __sc_cast(v)
-/* The sparc64 calling convention uses o0-o5 to pass the first six
- arguments (mapped via register windows).
-
- scnr: g1
- args: o0, o1, o2, o3, o4, o5
- sret: o0
- serr: (carry)
- call: t 0x10
- clob: g1-g6, g7?, o7?, f0-f31, cc
-*/
+#ifndef __sysc_load
+#define __sc_inp_def(n,v) __sc_asm_val(__sc_a##n, __sysc_reg(n), v);
+#else
+#define __sc_inp_def(n,value)
+#endif
-#ifndef EMAXERRNO
-#define EMAXERRNO 515
+#if !defined(__sysc_save) && !defined(__sysc_aout)
+#define __sc_res_def(n,r) __sc_asm_reg(n, r);
+#else
+#define __sc_res_def(n,r) __sc_reg(n);
#endif
-#define __syscall_errcon(res) \
- ((unsigned long)(res) >= (unsigned long)(-EMAXERRNO))
-
-#define __syscall_return(type, res) do { \
- __syscall_retval(res); \
- if (__syscall_errcon(res)) { \
- int __err = -(res); \
- __syscall_error(__err); \
- res = -1; \
- } \
- return (type) res; \
-} while (0)
-
-#define __syscall_clobbers \
- "g2", "g3", "g4", "g5", "g6", \
- "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", "f8", \
- "f9", "f10", "f11", "f12", "f13", "f14", "f15", "f16", \
- "f17", "f18", "f19", "f20", "f21", "f22", "f23", "f24", \
- "f25", "f26", "f27", "f28", "f29", "f30", "f31", "f32", \
- "f34", "f36", "f38", "f40", "f42", "f44", "f46", "f48", \
- "f50", "f52", "f54", "f56", "f58", "f60", "f62", \
- "cc", "memory"
-#define __syscall_regdef(name, reg) \
- register long __sc_##name __asm__ (reg)
+#define __sc_rreg(n,v) "r"(__sc_a##n)
+#define __sc_creg(n,v) __sysc_rcon(n)(__sc_cast(v))
-#define __syscall_regval(name, reg, val) \
- register long __sc_##name __asm__ (reg) = (long)(val)
+#ifdef __sc_trust
+#define __sc_iregs(n,...) __lst_##n(__sc_rreg,__VA_ARGS__)
+#define __sc_input(n,...) __con_##n(__sc_inp_def,__VA_ARGS__)
+#else
+#define __sc_iregs(n,...) __lst_##n(__sc_creg,__VA_ARGS__)
+#define __sc_input(n,...)
+#endif
-#define _syscall0(type, name) \
-type name(void) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(g1, "g1", __NR_##name); \
- __syscall_regdef(o0, "o0"); \
- \
- __asm__ volatile ( \
- "ta 0x6d" __comment(name) "\n\t" \
- "bcs,a,pt %%xcc,1f\n\t" \
- "sub %%g0,%%o0,%%o0\n" \
- "1:" \
- : "=r"(__sc_o0) \
- : "r"(__sc_g1) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_o0; \
- } \
- __syscall_return(type, __sc_res); \
-}
-#define _syscall1(type, name, type1, arg1) \
-type name(type1 arg1) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(g1, "g1", __NR_##name); \
- __syscall_regval(o0, "o0", arg1); \
- \
- __asm__ volatile ( \
- "ta 0x6d" __comment(name) "\n\t" \
- "bcs,a,pt %%xcc,1f\n\t" \
- "sub %%g0,%%o0,%%o0\n" \
- "1:" \
- : "=r"(__sc_o0) \
- : "r"(__sc_g1), \
- "0"(__sc_o0) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_o0; \
- } \
- __syscall_return(type, __sc_res); \
-}
-#define _syscall2(type, name, type1, arg1, type2, arg2) \
-type name(type1 arg1, type2 arg2) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(g1, "g1", __NR_##name); \
- __syscall_regval(o0, "o0", arg1); \
- __syscall_regval(o1, "o1", arg2); \
- \
- __asm__ volatile ( \
- "ta 0x6d" __comment(name) "\n\t" \
- "bcs,a,pt %%xcc,1f\n\t" \
- "sub %%g0,%%o0,%%o0\n" \
- "1:" \
- : "=r"(__sc_o0) \
- : "r"(__sc_g1), \
- "0"(__sc_o0), "r"(__sc_o1) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_o0; \
- } \
- __syscall_return(type, __sc_res); \
-}
+#define __sc_list(x) x(1), x(2), x(3), x(4), x(5), x(6)
-#define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
-type name(type1 arg1, type2 arg2, type3 arg3) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(g1, "g1", __NR_##name); \
- __syscall_regval(o0, "o0", arg1); \
- __syscall_regval(o1, "o1", arg2); \
- __syscall_regval(o2, "o2", arg3); \
- \
- __asm__ volatile ( \
- "ta 0x6d" __comment(name) "\n\t" \
- "bcs,a,pt %%xcc,1f\n\t" \
- "sub %%g0,%%o0,%%o0\n" \
- "1:" \
- : "=r"(__sc_o0) \
- : "r"(__sc_g1), \
- "0"(__sc_o0), "r"(__sc_o1), "r"(__sc_o2) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_o0; \
- } \
- __syscall_return(type, __sc_res); \
-}
+#ifndef __sysc_regs
+#define __sysc_regs __sc_list(__sysc_reg)
+#endif
-#define _syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(g1, "g1", __NR_##name); \
- __syscall_regval(o0, "o0", arg1); \
- __syscall_regval(o1, "o1", arg2); \
- __syscall_regval(o2, "o2", arg3); \
- __syscall_regval(o3, "o3", arg4); \
- \
- __asm__ volatile ( \
- "ta 0x6d" __comment(name) "\n\t" \
- "bcs,a,pt %%xcc,1f\n\t" \
- "sub %%g0,%%o0,%%o0\n" \
- "1:" \
- : "=r"(__sc_o0) \
- : "r"(__sc_g1), \
- "0"(__sc_o0), "r"(__sc_o1), "r"(__sc_o2), \
- "r"(__sc_o3) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_o0; \
- } \
- __syscall_return(type, __sc_res); \
-}
+#ifndef __sysc_rcon
+#define __sysc_rcon(n) "g"
+#endif
-#define _syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4, type5, arg5) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(g1, "g1", __NR_##name); \
- __syscall_regval(o0, "o0", arg1); \
- __syscall_regval(o1, "o1", arg2); \
- __syscall_regval(o2, "o2", arg3); \
- __syscall_regval(o3, "o3", arg4); \
- __syscall_regval(o4, "o4", arg5); \
- \
- __asm__ volatile ( \
- "ta 0x6d" __comment(name) "\n\t" \
- "bcs,a,pt %%xcc,1f\n\t" \
- "sub %%g0,%%o0,%%o0\n" \
- "1:" \
- : "=r"(__sc_o0) \
- : "r"(__sc_g1), \
- "0"(__sc_o0), "r"(__sc_o1), "r"(__sc_o2), \
- "r"(__sc_o3), "r"(__sc_o4) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_o0; \
- } \
- __syscall_return(type, __sc_res); \
-}
-#define _syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4, type5, arg5, type6, arg6) \
-type name (type1 arg1, type2 arg2, type3 arg3, \
- type4 arg4, type5 arg5, type6 arg6) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(g1, "g1", __NR_##name); \
- __syscall_regval(o0, "o0", arg1); \
- __syscall_regval(o1, "o1", arg2); \
- __syscall_regval(o2, "o2", arg3); \
- __syscall_regval(o3, "o3", arg4); \
- __syscall_regval(o4, "o4", arg5); \
- __syscall_regval(o5, "o5", arg6); \
- \
- __asm__ volatile ( \
- "ta 0x6d" __comment(name) "\n\t" \
- "bcs,a,pt %%xcc,1f\n\t" \
- "sub %%g0,%%o0,%%o0\n" \
- "1:" \
- : "=r"(__sc_o0) \
- : "r"(__sc_g1), \
- "0"(__sc_o0), "r"(__sc_o1), "r"(__sc_o2), \
- "r"(__sc_o3), "r"(__sc_o4), "r"(__sc_o5) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_o0; \
+#ifdef __sc_complex /* complex result */
+
+#ifndef __sysc_errc
+#define __sysc_errc(ret, err) (err)
+#endif
+
+#ifndef __sysc_retv
+#define __sysc_retv(type, ret, err) \
+ __sysc_setret(ret); \
+ if (__sysc_errc(ret, err)) { \
+ int __err = (ret); \
+ __sysc_seterr(__err); \
+ ret = -1; \
} \
- __syscall_return(type, __sc_res); \
-}
+ return (type)(ret)
+#endif
+#define __sc_results \
+ __sc_res_def(__err, __sysc_reg_err) \
+ __sc_res_def(__ret, __sysc_reg_ret)
-/* *****************************************
- SPARC SPARC SPARC SPARC *
- sparc kernel interface */
-
-#elif defined(__sparc__)
-
-/* The sparc calling convention uses o0-o5 to pass the first six
- arguments (mapped via register windows).
-
- scnr: g1
- args: o0, o1, o2, o3, o4, o5
- sret: o0
- serr: (carry)
- call: t 0x10
- clob: g1-g6, g7?, o7?, f0-f31, cc
-*/
+#define __sc_oregs "=r"(__ret), "=r"(__err)
-#ifndef EMAXERRNO
-#define EMAXERRNO 515
+#if defined(__sc_trust) || !defined(__sysc_save)
+#define __sc_saveres __sc_dummy_save(1)
+#else
+#define __sc_saveres \
+ __casm_nl(__sysc_save(__sysc_reg_ret,"%0")) \
+ __casm_nl(__sysc_save(__sysc_reg_err,"%1"))
#endif
-#define __syscall_errcon(res) \
- ((unsigned long)(res) >= (unsigned long)(-EMAXERRNO))
-
-#define __syscall_return(type, res) do { \
- __syscall_retval(res); \
- if (__syscall_errcon(res)) { \
- int __err = -(res); \
- __syscall_error(__err); \
- res = -1; \
- } \
- return (type) res; \
-} while (0)
-
-#define __syscall_clobbers \
- "g2", "g3", "g4", "g5", "g6", \
- "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", "f8", \
- "f9", "f10", "f11", "f12", "f13", "f14", "f15", "f16", \
- "f17", "f18", "f19", "f20", "f21", "f22", "f23", "f24", \
- "f25", "f26", "f27", "f28", "f29", "f30", "f31", \
- "cc", "memory"
-
-#define __syscall_regdef(name, reg) \
- register long __sc_##name __asm__ (reg)
-
-#define __syscall_regval(name, reg, val) \
- register long __sc_##name __asm__ (reg) = (long)(val)
-
-#define _syscall0(type, name) \
-type name(void) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(g1, "g1", __NR_##name); \
- __syscall_regdef(o0, "o0"); \
- \
- __asm__ volatile ( \
- "t 0x10" __comment(name) "\n\t" \
- "bcs,a 1f\n\t" \
- "sub %%g0,%%o0,%%o0\n" \
- "1:" \
- : "=r"(__sc_o0) \
- : "r"(__sc_g1) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_o0; \
- } \
- __syscall_return(type, __sc_res); \
-}
+#define __sc_return(t) __sysc_retv(t, __ret, __err)
-#define _syscall1(type, name, type1, arg1) \
-type name(type1 arg1) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(g1, "g1", __NR_##name); \
- __syscall_regval(o0, "o0", arg1); \
- \
- __asm__ volatile ( \
- "t 0x10" __comment(name) "\n\t" \
- "bcs,a 1f\n\t" \
- "sub %%g0,%%o0,%%o0\n" \
- "1:" \
- : "=r"(__sc_o0) \
- : "r"(__sc_g1), \
- "0"(__sc_o0) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_o0; \
- } \
- __syscall_return(type, __sc_res); \
-}
+#else /* simple result */
-#define _syscall2(type, name, type1, arg1, type2, arg2) \
-type name(type1 arg1, type2 arg2) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(g1, "g1", __NR_##name); \
- __syscall_regval(o0, "o0", arg1); \
- __syscall_regval(o1, "o1", arg2); \
- \
- __asm__ volatile ( \
- "t 0x10" __comment(name) "\n\t" \
- "bcs,a 1f\n\t" \
- "sub %%g0,%%o0,%%o0\n" \
- "1:" \
- : "=r"(__sc_o0) \
- : "r"(__sc_g1), \
- "0"(__sc_o0), "r"(__sc_o1) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_o0; \
- } \
- __syscall_return(type, __sc_res); \
-}
+#ifndef __sysc_errc
+#define __sysc_errc(res) \
+ ((unsigned __sysc_type)(res) >= \
+ (unsigned __sysc_type)(-(__sysc_max_err)))
+#endif
-#define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
-type name(type1 arg1, type2 arg2, type3 arg3) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(g1, "g1", __NR_##name); \
- __syscall_regval(o0, "o0", arg1); \
- __syscall_regval(o1, "o1", arg2); \
- __syscall_regval(o2, "o2", arg3); \
- \
- __asm__ volatile ( \
- "t 0x10" __comment(name) "\n\t" \
- "bcs,a 1f\n\t" \
- "sub %%g0,%%o0,%%o0\n" \
- "1:" \
- : "=r"(__sc_o0) \
- : "r"(__sc_g1), \
- "0"(__sc_o0), "r"(__sc_o1), "r"(__sc_o2) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_o0; \
+#ifndef __sysc_retv
+#define __sysc_retv(type, res) \
+ __sysc_setret(res); \
+ if (__sysc_errc(res)) { \
+ int __err = -(res); \
+ __sysc_seterr(__err); \
+ res = -1; \
} \
- __syscall_return(type, __sc_res); \
-}
+ return (type)(res)
+#endif
-#define _syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(g1, "g1", __NR_##name); \
- __syscall_regval(o0, "o0", arg1); \
- __syscall_regval(o1, "o1", arg2); \
- __syscall_regval(o2, "o2", arg3); \
- __syscall_regval(o3, "o3", arg4); \
- \
- __asm__ volatile ( \
- "t 0x10" __comment(name) "\n\t" \
- "bcs,a 1f\n\t" \
- "sub %%g0,%%o0,%%o0\n" \
- "1:" \
- : "=r"(__sc_o0) \
- : "r"(__sc_g1), \
- "0"(__sc_o0), "r"(__sc_o1), "r"(__sc_o2), \
- "r"(__sc_o3) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_o0; \
- } \
- __syscall_return(type, __sc_res); \
-}
-#define _syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4, type5, arg5) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(g1, "g1", __NR_##name); \
- __syscall_regval(o0, "o0", arg1); \
- __syscall_regval(o1, "o1", arg2); \
- __syscall_regval(o2, "o2", arg3); \
- __syscall_regval(o3, "o3", arg4); \
- __syscall_regval(o4, "o4", arg5); \
- \
- __asm__ volatile ( \
- "t 0x10" __comment(name) "\n\t" \
- "bcs,a 1f\n\t" \
- "sub %%g0,%%o0,%%o0\n" \
- "1:" \
- : "=r"(__sc_o0) \
- : "r"(__sc_g1), \
- "0"(__sc_o0), "r"(__sc_o1), "r"(__sc_o2), \
- "r"(__sc_o3), "r"(__sc_o4) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_o0; \
- } \
- __syscall_return(type, __sc_res); \
-}
+#define __sc_results \
+ __sc_res_def(__res, __sysc_reg_res)
-#define _syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4, type5, arg5, type6, arg6) \
-type name (type1 arg1, type2 arg2, type3 arg3, \
- type4 arg4, type5 arg5, type6 arg6) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(g1, "g1", __NR_##name); \
- __syscall_regval(o0, "o0", arg1); \
- __syscall_regval(o1, "o1", arg2); \
- __syscall_regval(o2, "o2", arg3); \
- __syscall_regval(o3, "o3", arg4); \
- __syscall_regval(o4, "o4", arg5); \
- __syscall_regval(o5, "o5", arg6); \
- \
- __asm__ volatile ( \
- __check("%0%1%2%3%4%5", "$o0$g1$o0$o1$o2$o3$o4$o5$o6") \
- "t 0x10" __comment(name) "\n\t" \
- "bcs,a 1f\n\t" \
- "sub %%g0,%%o0,%%o0\n" \
- "1:" \
- : "=r"(__sc_o0) \
- : "r"(__sc_g1), \
- "0"(__sc_o0), "r"(__sc_o1), "r"(__sc_o2), \
- "r"(__sc_o3), "r"(__sc_o4), "r"(__sc_o5) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_o0; \
- } \
- __syscall_return(type, __sc_res); \
-}
+#define __sc_oregs "=r"(__res)
+#if defined(__sc_trust) || !defined(__sysc_save)
+#define __sc_saveres __sc_dummy_save(0)
+#else
+#define __sc_saveres __casm_nl(__sysc_save(__sysc_reg_res,"%0"))
+#endif
-/* *****************************************
- V850 V850 V850 V850 *
- v850 kernel interface */
+#define __sc_return(t) __sysc_retv(t, __res)
-#elif defined(__v850__)
+#endif /* simple/complex */
-#warning syscall arch v850 not implemented yet
+#define __sc_dummy_load(n) "/* gcc dummy load " \
+ __casm(n,0,0,"%0 ",) __casm(n,1,0,"%1 ",) __casm(n,2,0,"%2 ",) \
+ __casm(n,3,0,"%3 ",) __casm(n,4,0,"%4 ",) __casm(n,5,0,"%5 ",) \
+ __casm(n,6,0,"%6 ",) "*/"
-/* *****************************************
- X86_64 X86_64 X86_64 X86_64 *
- x86_64 kernel interface */
+#ifdef __sysc_aout
+#define __sc_dummy_save(n)
+#define __sc_asmsave(n)
+#else
+#define __sc_dummy_save(n) "/* gcc dummy save " \
+ __casm(n,0,0,"%0 ",) __casm(n,1,0,"%1 ",) "*/"
+#endif
-#elif defined(__x86_64__)
+#define __comment(name) "\t/* kernel sys_" \
+ #name "[" __stringify(__sc_id(name)) "] */"
-/* The x86_64 calling convention uses rdi, rsi, rdx, rcx, r8, r9
- but the Linux kernel interface uses rdi, rsi, rdx, r10, r8, r9.
-
- scnr: a0(rax)
- args: a1(rdi), a2(rsi), a3(rdx), a4(r10), a5(r8), a6(r9)
- sret: a0(rax)
- serr: (err= sret > (unsigned)-EMAXERRNO)
- call: syscall
- clob: rcx, r11
-*/
-#ifndef EMAXERRNO
-#define EMAXERRNO 4095
+#define __sc_id(N) __NR_##N
+
+#ifndef __sysc_reg_cid
+#define __sc_cid(N) "i"(__sc_id(N))
+#define __sc_load_cid ""
+#define __sc_callid(N)
+#else
+#define __sc_cid(N) "r"(__cid)
+#define __sc_load_cid __sysc_limm(__sysc_reg_cid,"%0")
+#define __sc_callid(N) \
+ __sc_asm_val(__cid, __sysc_reg_cid, __sc_id(N));
#endif
-#define __syscall_errcon(res) \
- ((unsigned long)(res) >= (unsigned long)(-EMAXERRNO))
+#ifndef __sysc_cmd_pre
+#define __sc_cmd_pre ""
+#else
+#define __sc_cmd_pre __casm_nl(__sysc_cmd_pre)
+#endif
-#define __syscall_return(type, res) do { \
- __syscall_retval(res); \
- if (__syscall_errcon(res)) { \
- int __err = -(res); \
- __syscall_error(__err); \
- res = -1; \
- } \
- return (type) res; \
-} while (0)
+#ifndef __sysc_cmd_fin
+#define __sc_cmd_fin ""
+#else
+#define __sc_cmd_fin __sysc_cmd_fin
+#endif
-#define __syscall_clobbers \
- "cc", "r11", "rcx", "memory"
+#ifndef __sysc_pre
+#define __sysc_pre(n) __sc_cmd_pre
+#endif
-#define __syscall_regdef(name, reg) \
- register long __sc_##name __asm__ (reg)
+#ifndef __sysc_cmd
+#define __sysc_cmd(n) __sysc_cmd_sys
+#endif
-#define __syscall_regval(name, reg, val) \
- register long __sc_##name __asm__ (reg) = (long)(val)
+#ifndef __sysc_fin
+#define __sysc_fin(n) __sc_cmd_fin
+#endif
+#define __sc_cmds(n,name) \
+ __sysc_pre(n) \
+ __casm_nl(__sysc_cmd(n) __comment(name)) \
+ __sysc_fin(n)
+
+#ifndef __sc_asmload
+#ifdef __sc_trust
+#define __sc_asmload(n,N,...) __sc_asm( \
+ __sc_dummy_load(n) \
+ ::__sc_cid(N) __casm_cn_##n __sc_iregs(n,__VA_ARGS__))
+#else
+#define __sc_asmload(n,N,...) __sc_asm( \
+ __casm(n,1,1, __sysc_load(__sysc_reg(1),"%1"), )\
+ __casm(n,2,1, __sysc_load(__sysc_reg(2),"%2"), )\
+ __casm(n,3,1, __sysc_load(__sysc_reg(3),"%3"), )\
+ __casm(n,4,1, __sysc_load(__sysc_reg(4),"%4"), )\
+ __casm(n,5,1, __sysc_load(__sysc_reg(5),"%5"), )\
+ __casm(n,6,1, __sysc_load(__sysc_reg(6),"%6"), )\
+ __sc_load_cid ::__sc_cid(N) __casm_cn_##n \
+ __sc_iregs(n,__VA_ARGS__):__sysc_regs)
+#endif
+#endif
-#define _syscall0(type, name) \
-type name(void) \
+#ifndef __sysc_aout
+#define __sysc_aout
+#endif
+
+#ifndef __sc_asmsysc
+#define __sc_asmsysc(n,N) __sc_asm_vol( \
+ __casm(n,0,0, __sc_cmds(n,N) , )\
+ :__sysc_aout:"i"(__sc_id(N)) : __sysc_clobber)
+#endif
+
+#ifndef __sc_asmsave
+#define __sc_asmsave(n) __sc_asm( \
+ __sc_saveres :__sc_oregs)
+#endif
+
+
+
+
+#define __sc_body(n, type, name, ...) \
{ \
- long __sc_res; \
- { \
- __syscall_regval(a0, "rax", __NR_##name); \
- \
- __asm__ volatile ( \
- __check("%0%1", "%%rax%%rax") \
- "syscall" __comment(name) \
- : "=a"(__sc_a0) \
- : "0"(__sc_a0) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_a0; \
- } \
- __syscall_return(type, __sc_res); \
+ __sc_results __sc_callid(name) __sc_input(n, __VA_ARGS__) \
+ __sc_asmload(n, name, __VA_ARGS__); \
+ __sc_asmsysc(n, name); \
+ __sc_asmsave(n); \
+ __sc_return(type); \
}
-#define _syscall1(type, name, type1, arg1) \
+
+
+#define _syscall0(type, name) \
+type name(void) \
+__sc_body(0, type, name, *)
+
+#define _syscall1(type, name, type1, arg1) \
type name(type1 arg1) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a0, "rax", __NR_##name); \
- __syscall_regval(a1, "rdi", arg1); \
- \
- __asm__ volatile ( \
- __check("%0%1%2", "%%rax%%rax%%rdi") \
- "syscall" __comment(name) \
- : "=a"(__sc_a0) \
- : "0"(__sc_a0), \
- "r" (__sc_a1) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_a0; \
- } \
- __syscall_return(type, __sc_res); \
-}
+__sc_body(1, type, name, arg1)
-#define _syscall2(type, name, type1, arg1, type2, arg2) \
+#define _syscall2(type, name, type1, arg1, type2, arg2) \
type name(type1 arg1, type2 arg2) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a0, "rax", __NR_##name); \
- __syscall_regval(a1, "rdi", arg1); \
- __syscall_regval(a2, "rsi", arg2); \
- \
- __asm__ volatile ( \
- __check("%0%1%2%3", "%%rax%%rax%%rdi%%rsi") \
- "syscall" __comment(name) \
- : "=a"(__sc_a0) \
- : "0"(__sc_a0), \
- "r" (__sc_a1), "r"(__sc_a2) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_a0; \
- } \
- __syscall_return(type, __sc_res); \
-}
+__sc_body(2, type, name, arg1, arg2)
-#define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
+#define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
type name(type1 arg1, type2 arg2, type3 arg3) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a0, "rax", __NR_##name); \
- __syscall_regval(a1, "rdi", arg1); \
- __syscall_regval(a2, "rsi", arg2); \
- __syscall_regval(a3, "rdx", arg3); \
- \
- __asm__ volatile ( \
- __check("%0%1%2%3%4", "%%rax%%rax%%rdi%%rsi%%rdx") \
- "syscall" __comment(name) \
- : "=a"(__sc_a0) \
- : "0"(__sc_a0), \
- "r" (__sc_a1), "r"(__sc_a2), "r" (__sc_a3) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_a0; \
- } \
- __syscall_return(type, __sc_res); \
-}
-
+__sc_body(3, type, name, arg1, arg2, arg3)
-#define _syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a0, "rax", __NR_##name); \
- __syscall_regval(a1, "rdi", arg1); \
- __syscall_regval(a2, "rsi", arg2); \
- __syscall_regval(a3, "rdx", arg3); \
- __syscall_regval(a4, "r10", arg4); \
- \
- __asm__ volatile ( \
- __check("%0%1%2%3%4%5", \
- "%%rax%%rax%%rdi%%rsi%%rdx%%r10") \
- "syscall" __comment(name) \
- : "=a"(__sc_a0) \
- : "0"(__sc_a0), \
- "r" (__sc_a1), "r"(__sc_a2), "r" (__sc_a3), \
- "r" (__sc_a4) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_a0; \
- } \
- __syscall_return(type, __sc_res); \
-}
+#define _syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
+ type4, arg4) \
+type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
+__sc_body(4, type, name, arg1, arg2, arg3, arg4)
-#define _syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
- type4, arg4, type5, arg5) \
-type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a0, "rax", __NR_##name); \
- __syscall_regval(a1, "rdi", arg1); \
- __syscall_regval(a2, "rsi", arg2); \
- __syscall_regval(a3, "rdx", arg3); \
- __syscall_regval(a4, "r10", arg4); \
- __syscall_regval(a5, "r8", arg5); \
- \
- __asm__ volatile ( \
- __check("%0%1%2%3%4%5%6", \
- "%%rax%%rax%%rdi%%rsi%%rdx%%r10%%r8") \
- "syscall" __comment(name) \
- : "=a"(__sc_a0) \
- : "0"(__sc_a0), \
- "r" (__sc_a1), "r"(__sc_a2), "r" (__sc_a3), \
- "r" (__sc_a4), "r"(__sc_a5) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_a0; \
- } \
- __syscall_return(type, __sc_res); \
-}
+#define _syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
+ type4, arg4, type5, arg5) \
+type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) \
+__sc_body(5, type, name, arg1, arg2, arg3, arg4, arg5)
-#define _syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
+#define _syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
type4, arg4, type5, arg5, type6, arg6) \
-type name (type1 arg1, type2 arg2, type3 arg3, \
- type4 arg4, type5 arg5, type6 arg6) \
-{ \
- long __sc_res; \
- { \
- __syscall_regval(a0, "rax", __NR_##name); \
- __syscall_regval(a1, "rdi", arg1); \
- __syscall_regval(a2, "rsi", arg2); \
- __syscall_regval(a3, "rdx", arg3); \
- __syscall_regval(a4, "r10", arg4); \
- __syscall_regval(a5, "r8", arg5); \
- __syscall_regval(a6, "r9", arg6); \
- \
- __asm__ volatile ( \
- __check("%0%1%2%3%4%5%6%7", \
- "%%rax%%rax%%rdi%%rsi%%rdx%%r10%%r8%%r9") \
- "syscall" __comment(name) \
- : "=a"(__sc_a0) \
- : "0"(__sc_a0), \
- "r" (__sc_a1), "r"(__sc_a2), "r" (__sc_a3), \
- "r" (__sc_a4), "r"(__sc_a5), "r" (__sc_a6) \
- : __syscall_clobbers \
- ); \
- __sc_res = __sc_a0; \
- } \
- __syscall_return(type, __sc_res); \
-}
-
+type name(type1 arg1, type2 arg2, type3 arg3, \
+ type4 arg4, type5 arg5, type6 arg6) \
+__sc_body(6, type, name, arg1, arg2, arg3, arg4, arg5, arg6)
-#endif
+#endif /* __SYSCALL_NEW_H */
git://git.onelab.eu / util-vserver.git / blobdiff