diff options
Diffstat (limited to 'arch/powerpc/lib/memcpy_64.S')
| -rw-r--r-- | arch/powerpc/lib/memcpy_64.S | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/powerpc/lib/memcpy_64.S b/arch/powerpc/lib/memcpy_64.S index bc9a2ca591c3..32a06ec395d2 100644 --- a/arch/powerpc/lib/memcpy_64.S +++ b/arch/powerpc/lib/memcpy_64.S @@ -12,12 +12,27 @@ .align 7 _GLOBAL_TOC(memcpy) BEGIN_FTR_SECTION +#ifdef __LITTLE_ENDIAN__ + cmpdi cr7,r5,0 +#else std r3,-STACKFRAMESIZE+STK_REG(R31)(r1) /* save destination pointer for return value */ +#endif FTR_SECTION_ELSE #ifndef SELFTEST b memcpy_power7 #endif ALT_FTR_SECTION_END_IFCLR(CPU_FTR_VMX_COPY) +#ifdef __LITTLE_ENDIAN__ + /* dumb little-endian memcpy that will get replaced at runtime */ + addi r9,r3,-1 + addi r4,r4,-1 + beqlr cr7 + mtctr r5 +1: lbzu r10,1(r4) + stbu r10,1(r9) + bdnz 1b + blr +#else PPC_MTOCRF(0x01,r5) cmpldi cr1,r5,16 neg r6,r3 # LS 3 bits = # bytes to 8-byte dest bdry @@ -203,3 +218,4 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD) stb r0,0(r3) 4: ld r3,-STACKFRAMESIZE+STK_REG(R31)(r1) /* return dest pointer */ blr +#endif |