diff options
Diffstat (limited to 'src/runtime')
| -rw-r--r-- | src/runtime/asm_ppc64x.s | 85 |
1 files changed, 24 insertions, 61 deletions
diff --git a/src/runtime/asm_ppc64x.s b/src/runtime/asm_ppc64x.s index 96c87afac8..ecfc7c1671 100644 --- a/src/runtime/asm_ppc64x.s +++ b/src/runtime/asm_ppc64x.s @@ -1349,67 +1349,30 @@ TEXT runtime·debugCallPanicked(SB),NOSPLIT,$32-16 TW $31, R0, R0 RET #endif -// Note: these functions use a special calling convention to save generated code space. -// Arguments are passed in registers, but the space for those arguments are allocated -// in the caller's stack frame. These stubs write the args into that stack space and -// then tail call to the corresponding runtime handler. -// The tail call makes these stubs disappear in backtraces. -TEXT runtime·panicIndex<ABIInternal>(SB),NOSPLIT,$0-16 - JMP runtime·goPanicIndex<ABIInternal>(SB) -TEXT runtime·panicIndexU<ABIInternal>(SB),NOSPLIT,$0-16 - JMP runtime·goPanicIndexU<ABIInternal>(SB) -TEXT runtime·panicSliceAlen<ABIInternal>(SB),NOSPLIT,$0-16 - MOVD R4, R3 - MOVD R5, R4 - JMP runtime·goPanicSliceAlen<ABIInternal>(SB) -TEXT runtime·panicSliceAlenU<ABIInternal>(SB),NOSPLIT,$0-16 - MOVD R4, R3 - MOVD R5, R4 - JMP runtime·goPanicSliceAlenU<ABIInternal>(SB) -TEXT runtime·panicSliceAcap<ABIInternal>(SB),NOSPLIT,$0-16 - MOVD R4, R3 - MOVD R5, R4 - JMP runtime·goPanicSliceAcap<ABIInternal>(SB) -TEXT runtime·panicSliceAcapU<ABIInternal>(SB),NOSPLIT,$0-16 - MOVD R4, R3 - MOVD R5, R4 - JMP runtime·goPanicSliceAcapU<ABIInternal>(SB) -TEXT runtime·panicSliceB<ABIInternal>(SB),NOSPLIT,$0-16 - JMP runtime·goPanicSliceB<ABIInternal>(SB) -TEXT runtime·panicSliceBU<ABIInternal>(SB),NOSPLIT,$0-16 - JMP runtime·goPanicSliceBU<ABIInternal>(SB) -TEXT runtime·panicSlice3Alen<ABIInternal>(SB),NOSPLIT,$0-16 - MOVD R5, R3 - MOVD R6, R4 - JMP runtime·goPanicSlice3Alen<ABIInternal>(SB) -TEXT runtime·panicSlice3AlenU<ABIInternal>(SB),NOSPLIT,$0-16 - MOVD R5, R3 - MOVD R6, R4 - JMP runtime·goPanicSlice3AlenU<ABIInternal>(SB) -TEXT runtime·panicSlice3Acap<ABIInternal>(SB),NOSPLIT,$0-16 - MOVD R5, R3 - MOVD R6, R4 - JMP runtime·goPanicSlice3Acap<ABIInternal>(SB) -TEXT runtime·panicSlice3AcapU<ABIInternal>(SB),NOSPLIT,$0-16 - MOVD R5, R3 - MOVD R6, R4 - JMP runtime·goPanicSlice3AcapU<ABIInternal>(SB) -TEXT runtime·panicSlice3B<ABIInternal>(SB),NOSPLIT,$0-16 - MOVD R4, R3 - MOVD R5, R4 - JMP runtime·goPanicSlice3B<ABIInternal>(SB) -TEXT runtime·panicSlice3BU<ABIInternal>(SB),NOSPLIT,$0-16 - MOVD R4, R3 - MOVD R5, R4 - JMP runtime·goPanicSlice3BU<ABIInternal>(SB) -TEXT runtime·panicSlice3C<ABIInternal>(SB),NOSPLIT,$0-16 - JMP runtime·goPanicSlice3C<ABIInternal>(SB) -TEXT runtime·panicSlice3CU<ABIInternal>(SB),NOSPLIT,$0-16 - JMP runtime·goPanicSlice3CU<ABIInternal>(SB) -TEXT runtime·panicSliceConvert<ABIInternal>(SB),NOSPLIT,$0-16 - MOVD R5, R3 - MOVD R6, R4 - JMP runtime·goPanicSliceConvert<ABIInternal>(SB) + +TEXT runtime·panicBounds<ABIInternal>(SB),NOSPLIT,$104-0 + // Note: frame size is 16 bytes larger than necessary + // in order to pacify vet. Vet doesn't understand ppc64 + // layout properly. + NO_LOCAL_POINTERS + // Save all 8 int registers that could have an index in them. + // They may be pointers, but if they are they are dead. + // Skip R0 aka ZERO, R1 aka SP, R2 aka SB + MOVD R3, 48(R1) + MOVD R4, 56(R1) + MOVD R5, 64(R1) + MOVD R6, 72(R1) + MOVD R7, 80(R1) + MOVD R8, 88(R1) + MOVD R9, 96(R1) + MOVD R10, 104(R1) + // Note: we only save 8 reigsters to keep under nosplit stack limit + // Also, R11 is clobbered in dynamic linking situations + + MOVD LR, R3 // PC immediately after call to panicBounds + ADD $48, R1, R4 // pointer to save area + CALL runtime·panicBounds64<ABIInternal>(SB) + RET // These functions are used when internal linking cgo with external // objects compiled with the -Os on gcc. They reduce prologue/epilogue |