1 #include <linux/config.h>
4 * Preserved registers that are shared between code in ivt.S and entry.S. Be
5 * careful not to step on these!
7 #define pLvSys p1 /* set 1 if leave from syscall; otherwise, set 0 */
8 #define pKStk p2 /* will leave_{kernel,syscall} return to kernel-stacks? */
9 #define pUStk p3 /* will leave_{kernel,syscall} return to user-stacks? */
10 #define pSys p4 /* are we processing a (synchronous) system call? */
11 #define pNonSys p5 /* complement of pSys */
13 #define PT(f) (IA64_PT_REGS_##f##_OFFSET)
14 #define SW(f) (IA64_SWITCH_STACK_##f##_OFFSET)
16 #define PT_REGS_SAVES(off) \
18 .fframe IA64_PT_REGS_SIZE+16+(off); \
19 .spillsp rp, PT(CR_IIP)+16+(off); \
20 .spillsp ar.pfs, PT(CR_IFS)+16+(off); \
21 .spillsp ar.unat, PT(AR_UNAT)+16+(off); \
22 .spillsp ar.fpsr, PT(AR_FPSR)+16+(off); \
23 .spillsp pr, PT(PR)+16+(off);
25 #define PT_REGS_UNWIND_INFO(off) \
30 #define SWITCH_STACK_SAVES(off) \
31 .savesp ar.unat,SW(CALLER_UNAT)+16+(off); \
32 .savesp ar.fpsr,SW(AR_FPSR)+16+(off); \
33 .spillsp f2,SW(F2)+16+(off); .spillsp f3,SW(F3)+16+(off); \
34 .spillsp f4,SW(F4)+16+(off); .spillsp f5,SW(F5)+16+(off); \
35 .spillsp f16,SW(F16)+16+(off); .spillsp f17,SW(F17)+16+(off); \
36 .spillsp f18,SW(F18)+16+(off); .spillsp f19,SW(F19)+16+(off); \
37 .spillsp f20,SW(F20)+16+(off); .spillsp f21,SW(F21)+16+(off); \
38 .spillsp f22,SW(F22)+16+(off); .spillsp f23,SW(F23)+16+(off); \
39 .spillsp f24,SW(F24)+16+(off); .spillsp f25,SW(F25)+16+(off); \
40 .spillsp f26,SW(F26)+16+(off); .spillsp f27,SW(F27)+16+(off); \
41 .spillsp f28,SW(F28)+16+(off); .spillsp f29,SW(F29)+16+(off); \
42 .spillsp f30,SW(F30)+16+(off); .spillsp f31,SW(F31)+16+(off); \
43 .spillsp r4,SW(R4)+16+(off); .spillsp r5,SW(R5)+16+(off); \
44 .spillsp r6,SW(R6)+16+(off); .spillsp r7,SW(R7)+16+(off); \
45 .spillsp b0,SW(B0)+16+(off); .spillsp b1,SW(B1)+16+(off); \
46 .spillsp b2,SW(B2)+16+(off); .spillsp b3,SW(B3)+16+(off); \
47 .spillsp b4,SW(B4)+16+(off); .spillsp b5,SW(B5)+16+(off); \
48 .spillsp ar.pfs,SW(AR_PFS)+16+(off); .spillsp ar.lc,SW(AR_LC)+16+(off); \
49 .spillsp @priunat,SW(AR_UNAT)+16+(off); \
50 .spillsp ar.rnat,SW(AR_RNAT)+16+(off); \
51 .spillsp ar.bspstore,SW(AR_BSPSTORE)+16+(off); \
52 .spillsp pr,SW(PR)+16+(off))
54 #define DO_SAVE_SWITCH_STACK \
57 .fframe IA64_SWITCH_STACK_SIZE; \
58 adds sp=-IA64_SWITCH_STACK_SIZE,sp; \
59 mov.ret.sptk b7=r28,1f; \
60 SWITCH_STACK_SAVES(0); \
61 br.cond.sptk.many save_switch_stack; \
64 #define DO_LOAD_SWITCH_STACK \
68 mov.ret.sptk b7=r28,1f; \
69 br.cond.sptk.many load_switch_stack; \
71 adds sp=IA64_SWITCH_STACK_SIZE,sp