Posted on 2010-04-17 23:10
王小明 阅读(242)
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By default, the assembler predeclares the following register names:
- R0–R15 and r0–r15
- c0–c15 coprocessor registers
- p0–p15 coprocessor registers
- a1-a4 scratch registers, synonymous with r0-r3
- v1-v8 variable registers, synonymous with r4-r11
- sb and SBstack base, synonymous with r9
- sl and SL stack base, synonymous with r10
- fp and FP frame pointer, synonymous with r11
- ip and IP intra-procedure call scratch register, synonymous with r12
- sp and SP stack pointer, synonymous with r13
- lr and LR link register, synonymous with r14
- pc and PC program counter, synonymous with r15
- s0-s32 VFP single precision registers
- d0-d16 VFP double precision registers
- fpsid VFP system ID register
- fpscr VFP status and control register
- fpexc VFP exception register
- wr0-wr16 WMMX SIMD data registers
- wc0-wc16 WMMX status and control registers
- wcid WMMX coprocessor ID register, synonymous with wc0
- wcon WMMX control register, synonymous with wc1
- wcssf WMMX saturation SIMD flags, synonymous with wc2
- wcasf WMMX arithmetic SIMD flags, synonymous with wc3
- wcgr0-wcgr3 WMMX control general purpose registers, synonymous with wc8-wc11