ref: 47c188c0c6c2a013aded790bcaa5c9640955e38b
dir: /sys/src/ape/lib/ap/amd64/setjmp.s/
TEXT longjmp(SB), $0 MOVL r+8(FP), AX CMPL AX, $0 JNE ok /* ansi: "longjmp(0) => longjmp(1)" */ MOVL $1, AX /* bless their pointed heads */ ok: MOVQ 0(RARG), SP /* restore sp */ MOVQ 8(RARG), BX /* put return pc on the stack */ MOVQ BX, 0(SP) RET TEXT setjmp(SB), $0 MOVQ SP, 0(RARG) /* store sp */ MOVQ 0(SP), BX /* store return pc */ MOVQ BX, 8(RARG) MOVL $0, AX /* return 0 */ RET TEXT sigsetjmp(SB), $0 MOVL savemask+8(FP), BX MOVL BX, 0(RARG) MOVL $_psigblocked(SB), 4(RARG) MOVQ SP, 8(RARG) /* store sp */ MOVQ 0(SP), BX /* store return pc */ MOVQ BX, 16(RARG) MOVL $0, AX /* return 0 */ RET