diff options
Diffstat (limited to 'usr/klibc/arch/alpha/setjmp.S')
| -rw-r--r-- | usr/klibc/arch/alpha/setjmp.S | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/usr/klibc/arch/alpha/setjmp.S b/usr/klibc/arch/alpha/setjmp.S new file mode 100644 index 0000000..ed604bd --- /dev/null +++ b/usr/klibc/arch/alpha/setjmp.S @@ -0,0 +1,75 @@ +# +# setjmp.S +# + +# +# The jmp_buf looks like: +# +# s0..5 +# fp +# ra +# gp +# sp +# + +#include <machine/asm.h> + + .text + .align 3 + .type setjmp,@function + .ent setjmp, 0 + .globl setjmp +setjmp: + lda v0, 0(zero) + stq s0, 0(a0) + stq s1, 8(a0) + stq s2, 16(a0) + stq s3, 24(a0) + stq s4, 32(a0) + stq s5, 40(a0) + stq fp, 48(a0) + stq ra, 56(a0) + stq gp, 64(a0) + stq sp, 72(a0) + stt $f2, 80(a0) + stt $f3, 88(a0) + stt $f4, 96(a0) + stt $f5, 104(a0) + stt $f6, 112(a0) + stt $f7, 120(a0) + stt $f8, 128(a0) + stt $f9, 136(a0) + ret zero,(ra),1 + + .size setjmp,.-setjmp + .end setjmp + + .type longjmp,@function + .ent longjmp, 0 + .globl longjmp +longjmp: + mov a1, v0 + ldq s0, 0(a0) + ldq s1, 8(a0) + ldq s2, 16(a0) + ldq s3, 24(a0) + ldq s4, 32(a0) + ldq s5, 40(a0) + ldq fp, 48(a0) + ldq ra, 56(a0) + ldq gp, 64(a0) + ldq sp, 72(a0) + ldt $f2, 80(a0) + ldt $f3, 88(a0) + ldt $f4, 96(a0) + ldt $f5, 104(a0) + ldt $f6, 112(a0) + ldt $f7, 120(a0) + ldt $f8, 128(a0) + ldt $f9, 136(a0) + /* We're bound to get a mispredict here, but at least give us + a chance to get the return stack back in sync... */ + ret zero,(ra),1 + + .size longjmp,.-longjmp + .end longjmp |