diff options
Diffstat (limited to 'src/runtime/cgo/asm_mips64x.s')
| -rw-r--r-- | src/runtime/cgo/asm_mips64x.s | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/src/runtime/cgo/asm_mips64x.s b/src/runtime/cgo/asm_mips64x.s index 1235852dbe..e51cdf3d12 100644 --- a/src/runtime/cgo/asm_mips64x.s +++ b/src/runtime/cgo/asm_mips64x.s @@ -6,14 +6,14 @@ #include "textflag.h" -/* - * void crosscall2(void (*fn)(void*, int32, uintptr), void*, int32, uintptr) - * Save registers and call fn with two arguments. - */ +// Called by C code generated by cmd/cgo. +// func crosscall2(fn, a unsafe.Pointer, n int32, ctxt uintptr) +// Saves C callee-saved registers and calls cgocallback with three arguments. +// fn is the PC of a func(a unsafe.Pointer) function. TEXT crosscall2(SB),NOSPLIT|NOFRAME,$0 /* * We still need to save all callee save register as before, and then - * push 3 args for fn (R5, R6, R7). + * push 3 args for fn (R4, R5, R7), skipping R6. * Also note that at procedure entry in gc world, 8(R29) will be the * first arg. */ @@ -22,9 +22,9 @@ TEXT crosscall2(SB),NOSPLIT|NOFRAME,$0 #else ADDV $(-8*15), R29 #endif - MOVV R5, (8*1)(R29) // void* - MOVW R6, (8*2)(R29) // int32 - MOVV R7, (8*3)(R29) // uintptr + MOVV R4, (8*1)(R29) // fn unsafe.Pointer + MOVV R5, (8*2)(R29) // a unsafe.Pointer + MOVV R7, (8*3)(R29) // ctxt uintptr MOVV R16, (8*4)(R29) MOVV R17, (8*5)(R29) MOVV R18, (8*6)(R29) @@ -52,7 +52,8 @@ TEXT crosscall2(SB),NOSPLIT|NOFRAME,$0 SRLV $32, R31, RSB SLLV $32, RSB JAL runtime·load_g(SB) - JAL (R4) + + JAL runtime·cgocallback(SB) MOVV (8*4)(R29), R16 MOVV (8*5)(R29), R17 |