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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-01-15 14:22:35 +1100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-01-15 14:22:35 +1100 |
| commit | fac515db45207718168cb55ca4d0a390e43b61af (patch) | |
| tree | 7dd2fe9b94f769a2009ff6c7402c52ef3dd3b640 /arch/powerpc/include/asm/ppc_asm.h | |
| parent | 3ac8ff1c475bda7174fce63230c0932454287cd5 (diff) | |
| parent | d064f30e5063ec54ab50af08c64fb5055e759bfd (diff) | |
Merge remote-tracking branch 'scott/next' into next
Freescale updates from Scott:
<<
Highlights include 32-bit booke relocatable support, e6500 hardware
tablewalk support, various e500 SPE fixes, some new/revived boards, and
e6500 deeper idle and altivec powerdown modes.
>>
Diffstat (limited to 'arch/powerpc/include/asm/ppc_asm.h')
| -rw-r--r-- | arch/powerpc/include/asm/ppc_asm.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/ppc_asm.h b/arch/powerpc/include/asm/ppc_asm.h index 7689e0e98d33..6586a40a46ce 100644 --- a/arch/powerpc/include/asm/ppc_asm.h +++ b/arch/powerpc/include/asm/ppc_asm.h @@ -294,6 +294,11 @@ n: * you want to access various offsets within it). On ppc32 this is * identical to LOAD_REG_IMMEDIATE. * + * LOAD_REG_ADDR_PIC(rn, name) + * Loads the address of label 'name' into register 'run'. Use this when + * the kernel doesn't run at the linked or relocated address. Please + * note that this macro will clobber the lr register. + * * LOAD_REG_ADDRBASE(rn, name) * ADDROFF(name) * LOAD_REG_ADDRBASE loads part of the address of label 'name' into @@ -304,6 +309,14 @@ n: * LOAD_REG_ADDRBASE(rX, name) * ld rY,ADDROFF(name)(rX) */ + +/* Be careful, this will clobber the lr register. */ +#define LOAD_REG_ADDR_PIC(reg, name) \ + bl 0f; \ +0: mflr reg; \ + addis reg,reg,(name - 0b)@ha; \ + addi reg,reg,(name - 0b)@l; + #ifdef __powerpc64__ #define LOAD_REG_IMMEDIATE(reg,expr) \ lis reg,(expr)@highest; \ |