diff options
| author |   Nicholas Piggin <npiggin@gmail.com> | 2022-09-26 13:40:56 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2022-09-28 19:22:12 +1000 |
| commit | 8e93fb33c84f68db20c0bc2821334a4c54c3e251 (patch) | |
| tree | 4059b8f1c36243441e504873b443362531e6a5f7 /arch/powerpc/include/asm/ppc_asm.h | |
| parent | powerpc/64: switch asm helpers from GOT to TOC relative addressing (diff) | |
| download | linux-dev-8e93fb33c84f68db20c0bc2821334a4c54c3e251.tar.xz linux-dev-8e93fb33c84f68db20c0bc2821334a4c54c3e251.zip | |
powerpc/64: provide a helper macro to load r2 with the kernel TOC
A later change stops the kernel using r2 and loads it with a poison
value. Provide a PACATOC loading abstraction which can hide this
detail.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220926034057.2360083-5-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/include/asm/ppc_asm.h')
| -rw-r--r-- | arch/powerpc/include/asm/ppc_asm.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/ppc_asm.h b/arch/powerpc/include/asm/ppc_asm.h index 9972f3e90c9d..cf6bec9770d6 100644 --- a/arch/powerpc/include/asm/ppc_asm.h +++ b/arch/powerpc/include/asm/ppc_asm.h @@ -327,6 +327,12 @@ n: #ifdef __powerpc64__ +#define __LOAD_PACA_TOC(reg) \ + ld reg,PACATOC(r13) + +#define LOAD_PACA_TOC() \ + __LOAD_PACA_TOC(r2) + #define LOAD_REG_IMMEDIATE(reg, expr) __LOAD_REG_IMMEDIATE reg, expr #define LOAD_REG_IMMEDIATE_SYM(reg, tmp, expr) \ |