diff options
Diffstat (limited to 'sysdeps/sparc/sparc32/__longjmp.S')
| -rw-r--r-- | sysdeps/sparc/sparc32/__longjmp.S | 43 |
1 files changed, 24 insertions, 19 deletions
diff --git a/sysdeps/sparc/sparc32/__longjmp.S b/sysdeps/sparc/sparc32/__longjmp.S index 36e1c170dd..651ede4c15 100644 --- a/sysdeps/sparc/sparc32/__longjmp.S +++ b/sysdeps/sparc/sparc32/__longjmp.S @@ -22,38 +22,43 @@ #include <bits/setjmp.h> #define ENV(reg) [%g1 + (reg * 4)] -ENTRY (__longjmp) +ENTRY(__longjmp) /* Store our arguments in global registers so we can still use them while unwinding frames and their register windows. */ mov %o0, %g1 /* ENV in %g1 */ - orcc %o1, %g0, %g6 /* VAL in %g6 */ + orcc %o1, %g0, %g2 /* VAL in %g2 */ be,a 0f /* Branch if zero; else skip delay slot. */ - mov 1, %g6 /* Delay slot only hit if zero: VAL = 1. */ + mov 1, %g2 /* Delay slot only hit if zero: VAL = 1. */ 0: - - /* Cache target FP in register %g7. */ - ld ENV (JB_FP), %g7 + /* Cache target FP in register %g3. */ + ld ENV(JB_FP), %g3 /* Now we will loop, unwinding the register windows up the stack - until the restored %fp value matches the target value in %g7. */ + until the restored %fp value matches the target value in %g3. */ -loop: cmp %fp, %g7 /* Have we reached the target frame? */ - bl,a loop /* Loop while current fp is below target. */ +LOC(loop): + cmp %fp, %g3 /* Have we reached the target frame? */ + bl,a LOC(loop) /* Loop while current fp is below target. */ restore /* Unwind register window in delay slot. */ - be,a found /* Better have hit it exactly. */ - ld ENV (JB_SP), %o0 /* Delay slot: extract target SP. */ + be,a LOC(found) /* Better have hit it exactly. */ + ld ENV(JB_SP), %o0 /* Delay slot: extract target SP. */ -bogus: /* Get here only if the jmp_buf or stack is clobbered. */ - call C_SYMBOL_NAME (abort) - nop +LOC(bogus): + /* Get here only if the jmp_buf or stack is clobbered. */ + call C_SYMBOL_NAME(abort) + nop unimp 0 -found: /* We have unwound register windows so %fp matches the target. */ +LOC(found): + /* We have unwound register windows so %fp matches the target. */ cmp %o0, %sp /* Check jmp_buf SP vs register window. */ - bge,a sp_ok /* Saved must not be deeper than register. */ + bge,a LOC(sp_ok) /* Saved must not be deeper than register. */ mov %o0, %sp /* OK, install new SP. */ - b,a bogus /* Bogus, we lose. */ + b,a LOC(bogus) /* Bogus, we lose. */ -sp_ok: ld ENV (JB_PC), %o0 /* Extract target return PC. */ +LOC(sp_ok): + ld ENV(JB_PC), %o0 /* Extract target return PC. */ jmp %o0 + 8 /* Return there. */ - mov %g6, %o0 /* Delay slot: set return value. */ + mov %g2, %o0 /* Delay slot: set return value. */ + +END(__longjmp) |