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- Use the magic for ___sigreturn in __sigset.

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- In __sigreturn call sigprocmask() to restore our signal state rather than
   returning through sigreturn().  jmp to ___sigreturn to restore our register
   state following this.

Requested by:	pete
This commit is contained in:
Jeff Roberson 2003-11-14 03:21:22 +00:00
parent 57ec9907bc
commit d1bbae0dfc
1 changed files with 11 additions and 3 deletions
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14
lib/libc/alpha/gen/setjmp.S
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@ -86,7 +86,7 @@ LEAF(setjmp, 1)
mov s0, a0 mov s0, a0
ldq s0, (( 9 + 4) * 8)(a0) ldq s0, (( 9 + 4) * 8)(a0)
ldiq t0, 0xacedbade /* sigcontext magic number */ ldiq t0, 0xacedbadd /* sigcontext magic number */
stq t0, ((31 + 4) * 8)(a0) /* magic in sc_regs[31] */ stq t0, ((31 + 4) * 8)(a0) /* magic in sc_regs[31] */
/* Too bad we can't check if we actually used FP */ /* Too bad we can't check if we actually used FP */
ldiq t0, 1 ldiq t0, 1
@ -120,8 +120,16 @@ END(setjmp)
XLEAF(longjmp, 2) XLEAF(longjmp, 2)
LEAF(__longjmp, 2) LEAF(__longjmp, 2)
LDGP(pv) LDGP(pv)
stq a1, (( 0 + 4) * 8)(a0) /* save return value */ mov a1, s1 /* save return value */
CALL(_sigreturn) /* use sigreturn to return */ mov a0, s0 /* save the sc pointer */
/* restore the mask */
mov zero, a2 /* oset: NULL */
lda a1, (71 * 8)(a0) /* set: sc_reserved */
addq a2, 3, a0 /* how: SIG_SET */
CALL(_sigprocmask) /* restore the mask */
mov s0, a0 /* restore the sc pointer */
mov s1, a1 /* restore the return value */
jmp zero, ___longjmp /* use ___longjmp to return */
botch: botch:
CALL(longjmperror) CALL(longjmperror)