*
*/
-#include <linux/config.h>
#include <linux/sys.h>
#include <asm/unistd.h>
#include <asm/errno.h>
addze r3,r3
blr
-/*
- * Returns (address we're running at) - (address we were linked at)
- * for use before the text and data are mapped to KERNELBASE.
- */
-_GLOBAL(reloc_offset)
- mflr r0
- bl 1f
-1: mflr r3
- LOAD_REG_IMMEDIATE(r4,1b)
- subf r3,r4,r3
- mtlr r0
- blr
-
-/*
- * add_reloc_offset(x) returns x + reloc_offset().
- */
-_GLOBAL(add_reloc_offset)
- mflr r0
- bl 1f
-1: mflr r5
- LOAD_REG_IMMEDIATE(r4,1b)
- subf r5,r4,r5
- add r3,r3,r5
- mtlr r0
- blr
-
/*
* sub_reloc_offset(x) returns x - reloc_offset().
*/
mtlr r11
blr
-/*
- * identify_cpu,
- * called with r3 = data offset and r4 = CPU number
- * doesn't change r3
- */
-_GLOBAL(identify_cpu)
- addis r8,r3,cpu_specs@ha
- addi r8,r8,cpu_specs@l
- mfpvr r7
-1:
- lwz r5,CPU_SPEC_PVR_MASK(r8)
- and r5,r5,r7
- lwz r6,CPU_SPEC_PVR_VALUE(r8)
- cmplw 0,r6,r5
- beq 1f
- addi r8,r8,CPU_SPEC_ENTRY_SIZE
- b 1b
-1:
- addis r6,r3,cur_cpu_spec@ha
- addi r6,r6,cur_cpu_spec@l
- sub r8,r8,r3
- stw r8,0(r6)
- blr
-
-/*
- * do_cpu_ftr_fixups - goes through the list of CPU feature fixups
- * and writes nop's over sections of code that don't apply for this cpu.
- * r3 = data offset (not changed)
- */
-_GLOBAL(do_cpu_ftr_fixups)
- /* Get CPU 0 features */
- addis r6,r3,cur_cpu_spec@ha
- addi r6,r6,cur_cpu_spec@l
- lwz r4,0(r6)
- add r4,r4,r3
- lwz r4,CPU_SPEC_FEATURES(r4)
-
- /* Get the fixup table */
- addis r6,r3,__start___ftr_fixup@ha
- addi r6,r6,__start___ftr_fixup@l
- addis r7,r3,__stop___ftr_fixup@ha
- addi r7,r7,__stop___ftr_fixup@l
-
- /* Do the fixup */
-1: cmplw 0,r6,r7
- bgelr
- addi r6,r6,16
- lwz r8,-16(r6) /* mask */
- and r8,r8,r4
- lwz r9,-12(r6) /* value */
- cmplw 0,r8,r9
- beq 1b
- lwz r8,-8(r6) /* section begin */
- lwz r9,-4(r6) /* section end */
- subf. r9,r8,r9
- beq 1b
- /* write nops over the section of code */
- /* todo: if large section, add a branch at the start of it */
- srwi r9,r9,2
- mtctr r9
- add r8,r8,r3
- lis r0,0x60000000@h /* nop */
-3: stw r0,0(r8)
- andi. r10,r4,CPU_FTR_SPLIT_ID_CACHE@l
- beq 2f
- dcbst 0,r8 /* suboptimal, but simpler */
- sync
- icbi 0,r8
-2: addi r8,r8,4
- bdnz 3b
- sync /* additional sync needed on g4 */
- isync
- b 1b
-
/*
* call_setup_cpu - call the setup_cpu function for this cpu
* r3 = data offset, r24 = cpu number
lwz r4,0(r4)
add r4,r4,r3
lwz r5,CPU_SPEC_SETUP(r4)
- cmpi 0,r5,0
+ cmpwi 0,r5,0
add r5,r5,r3
beqlr
mtctr r5
bne- 10b
blr
-/*
- * I/O string operations
- *
- * insb(port, buf, len)
- * outsb(port, buf, len)
- * insw(port, buf, len)
- * outsw(port, buf, len)
- * insl(port, buf, len)
- * outsl(port, buf, len)
- * insw_ns(port, buf, len)
- * outsw_ns(port, buf, len)
- * insl_ns(port, buf, len)
- * outsl_ns(port, buf, len)
- *
- * The *_ns versions don't do byte-swapping.
- */
-_GLOBAL(_insb)
- cmpwi 0,r5,0
- mtctr r5
- subi r4,r4,1
- blelr-
-00: lbz r5,0(r3)
- eieio
- stbu r5,1(r4)
- bdnz 00b
- blr
-
-_GLOBAL(_outsb)
- cmpwi 0,r5,0
- mtctr r5
- subi r4,r4,1
- blelr-
-00: lbzu r5,1(r4)
- stb r5,0(r3)
- eieio
- bdnz 00b
- blr
-
-_GLOBAL(_insw)
- cmpwi 0,r5,0
- mtctr r5
- subi r4,r4,2
- blelr-
-00: lhbrx r5,0,r3
- eieio
- sthu r5,2(r4)
- bdnz 00b
- blr
-
-_GLOBAL(_outsw)
- cmpwi 0,r5,0
- mtctr r5
- subi r4,r4,2
- blelr-
-00: lhzu r5,2(r4)
- eieio
- sthbrx r5,0,r3
- bdnz 00b
- blr
-
-_GLOBAL(_insl)
- cmpwi 0,r5,0
- mtctr r5
- subi r4,r4,4
- blelr-
-00: lwbrx r5,0,r3
- eieio
- stwu r5,4(r4)
- bdnz 00b
- blr
-
-_GLOBAL(_outsl)
- cmpwi 0,r5,0
- mtctr r5
- subi r4,r4,4
- blelr-
-00: lwzu r5,4(r4)
- stwbrx r5,0,r3
- eieio
- bdnz 00b
- blr
-
-_GLOBAL(__ide_mm_insw)
-_GLOBAL(_insw_ns)
- cmpwi 0,r5,0
- mtctr r5
- subi r4,r4,2
- blelr-
-00: lhz r5,0(r3)
- eieio
- sthu r5,2(r4)
- bdnz 00b
- blr
-
-_GLOBAL(__ide_mm_outsw)
-_GLOBAL(_outsw_ns)
- cmpwi 0,r5,0
- mtctr r5
- subi r4,r4,2
- blelr-
-00: lhzu r5,2(r4)
- sth r5,0(r3)
- eieio
- bdnz 00b
- blr
-
-_GLOBAL(__ide_mm_insl)
-_GLOBAL(_insl_ns)
- cmpwi 0,r5,0
- mtctr r5
- subi r4,r4,4
- blelr-
-00: lwz r5,0(r3)
- eieio
- stwu r5,4(r4)
- bdnz 00b
- blr
-
-_GLOBAL(__ide_mm_outsl)
-_GLOBAL(_outsl_ns)
- cmpwi 0,r5,0
- mtctr r5
- subi r4,r4,4
- blelr-
-00: lwzu r5,4(r4)
- stw r5,0(r3)
- eieio
- bdnz 00b
- blr
-
/*
* Extended precision shifts.
*
mr r30,r3 /* function */
mr r31,r4 /* argument */
ori r3,r5,CLONE_VM /* flags */
- oris r3,r3,CLONE_UNTRACED>>16
+ oris r3,r3,(CLONE_UNTRACED|CLONE_KTHREAD)>>16
li r4,0 /* new sp (unused) */
li r0,__NR_clone
sc
addi r1,r1,16
blr
-_GLOBAL(execve)
+_GLOBAL(kernel_execve)
li r0,__NR_execve
sc
bnslr
git://git.onelab.eu / linux-2.6.git / blobdiff