diff options
Diffstat (limited to 'arch/powerpc/lib/code-patching.c')
| -rw-r--r-- | arch/powerpc/lib/code-patching.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/arch/powerpc/lib/code-patching.c b/arch/powerpc/lib/code-patching.c index 7afae88..638dde3 100644 --- a/arch/powerpc/lib/code-patching.c +++ b/arch/powerpc/lib/code-patching.c @@ -11,23 +11,27 @@ #include <asm/code-patching.h> -void create_instruction(unsigned long addr, unsigned int instr) +void patch_instruction(unsigned int *addr, unsigned int instr) { - unsigned int *p; - p = (unsigned int *)addr; - *p = instr; - asm ("dcbst 0, %0; sync; icbi 0,%0; sync; isync" : : "r" (p)); + *addr = instr; + asm ("dcbst 0, %0; sync; icbi 0,%0; sync; isync" : : "r" (addr)); } -void create_branch(unsigned long addr, unsigned long target, int flags) +void patch_branch(unsigned int *addr, unsigned long target, int flags) +{ + patch_instruction(addr, create_branch(addr, target, flags)); +} + +unsigned int create_branch(const unsigned int *addr, + unsigned long target, int flags) { unsigned int instruction; if (! (flags & BRANCH_ABSOLUTE)) - target = target - addr; + target = target - (unsigned long)addr; /* Mask out the flags and target, so they don't step on each other. */ instruction = 0x48000000 | (flags & 0x3) | (target & 0x03FFFFFC); - create_instruction(addr, instruction); + return instruction; } |