diff options
| author |   Jordan Niethe <jniethe5@gmail.com> | 2020-05-06 13:40:37 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2020-05-19 00:10:38 +1000 |
| commit | 622cf6f436a12338bbcfbb3474629755547fd112 (patch) | |
| tree | b26ffcbde6ecc0514d9a8a06ef4d8548d526b80b /arch/powerpc/lib/feature-fixups.c | |
| parent | powerpc: Define and use get_user_instr() et. al. (diff) | |
| download | linux-dev-622cf6f436a12338bbcfbb3474629755547fd112.tar.xz linux-dev-622cf6f436a12338bbcfbb3474629755547fd112.zip | |
powerpc: Introduce a function for reporting instruction length
Currently all instructions have the same length, but in preparation for
prefixed instructions introduce a function for returning instruction
length.
Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Alistair Popple <alistair@popple.id.au>
Link: https://lore.kernel.org/r/20200506034050.24806-18-jniethe5@gmail.com
Diffstat (limited to 'arch/powerpc/lib/feature-fixups.c')
| -rw-r--r-- | arch/powerpc/lib/feature-fixups.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/arch/powerpc/lib/feature-fixups.c b/arch/powerpc/lib/feature-fixups.c index 3c55097d406d..0c9ffdef8096 100644 --- a/arch/powerpc/lib/feature-fixups.c +++ b/arch/powerpc/lib/feature-fixups.c @@ -392,20 +392,20 @@ void do_lwsync_fixups(unsigned long value, void *fixup_start, void *fixup_end) static void do_final_fixups(void) { #if defined(CONFIG_PPC64) && defined(CONFIG_RELOCATABLE) - struct ppc_inst *src, *dest; - unsigned long length; + struct ppc_inst inst, *src, *dest, *end; if (PHYSICAL_START == 0) return; src = (struct ppc_inst *)(KERNELBASE + PHYSICAL_START); dest = (struct ppc_inst *)KERNELBASE; - length = (__end_interrupts - _stext) / sizeof(struct ppc_inst); + end = (void *)src + (__end_interrupts - _stext); - while (length--) { - raw_patch_instruction(dest, ppc_inst_read(src)); - src++; - dest++; + while (src < end) { + inst = ppc_inst_read(src); + raw_patch_instruction(dest, inst); + src = (void *)src + ppc_inst_len(inst); + dest = (void *)dest + ppc_inst_len(inst); } #endif } |