Messages in this thread | | | From | Michael Ellerman <> | Subject | Re: [PATCH v3 3/3] powerpc/module64: Use symbolic instructions names. | Date | Mon, 08 Jul 2019 10:56:50 +1000 |
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Christophe Leroy <christophe.leroy@c-s.fr> writes: > To increase readability/maintainability, replace hard coded > instructions values by symbolic names. > > Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> > --- > v3: fixed warning by adding () in an 'if' around X | Y (unlike said in v2 history, this change was forgotten in v2) > v2: rearranged comments > > arch/powerpc/kernel/module_64.c | 53 +++++++++++++++++++++++++++-------------- > 1 file changed, 35 insertions(+), 18 deletions(-) > > diff --git a/arch/powerpc/kernel/module_64.c b/arch/powerpc/kernel/module_64.c > index c2e1b06253b8..b33a5d5e2d35 100644 > --- a/arch/powerpc/kernel/module_64.c > +++ b/arch/powerpc/kernel/module_64.c > @@ -704,18 +711,21 @@ int apply_relocate_add(Elf64_Shdr *sechdrs, ... > /* > * If found, replace it with: > * addis r2, r12, (.TOC.-func)@ha > * addi r2, r12, (.TOC.-func)@l > */ > - ((uint32_t *)location)[0] = 0x3c4c0000 + PPC_HA(value); > - ((uint32_t *)location)[1] = 0x38420000 + PPC_LO(value); > + ((uint32_t *)location)[0] = PPC_INST_ADDIS | __PPC_RT(R2) | > + __PPC_RA(R12) | PPC_HA(value); > + ((uint32_t *)location)[1] = PPC_INST_ADDI | __PPC_RT(R2) | > + __PPC_RA(R12) | PPC_LO(value); > break;
This was crashing and it's amazing how long you can stare at a disassembly and not see the difference between `r2` and `r12` :)
Fixed now.
cheers
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