ref: 1647696236f2d10e70cd8a0fc2a04fabfa5f63a6
dir: /sys/src/libc/68020/setjmp.s/
TEXT setjmp(SB), 1, $0 MOVL b+0(FP), A0 MOVL A7, (A0)+ MOVL (A7), (A0) CLRL R0 RTS TEXT longjmp(SB), 1, $0 MOVL b+0(FP), A0 MOVL r+4(FP), R0 BNE ok /* ansi: "longjmp(0) => longjmp(1)" */ MOVL $1, R0 /* bless their pointed heads */ ok: MOVL (A0)+, A7 MOVL (A0), (A7) RTS