diff options
Diffstat (limited to 'linux-user/host/ppc64/safe-syscall.inc.S')
| -rw-r--r-- | linux-user/host/ppc64/safe-syscall.inc.S | 24 |
1 files changed, 11 insertions, 13 deletions
diff --git a/linux-user/host/ppc64/safe-syscall.inc.S b/linux-user/host/ppc64/safe-syscall.inc.S index 4b57440..3a640cf 100644 --- a/linux-user/host/ppc64/safe-syscall.inc.S +++ b/linux-user/host/ppc64/safe-syscall.inc.S @@ -22,9 +22,6 @@ * first argument an 'int *' to the signal_pending flag, the * second one the system call number (as a 'long'), and all further * arguments being syscall arguments (also 'long'). - * We return a long which is the syscall's return value, which - * may be negative-errno on failure. Conversion to the - * -1-and-errno-set convention is done by the calling wrapper. */ #if _CALL_ELF == 2 safe_syscall_base: @@ -39,7 +36,7 @@ safe_syscall_base: .L.safe_syscall_base: .cfi_startproc #endif - /* We enter with r3 == *signal_pending + /* We enter with r3 == &signal_pending * r4 == syscall number * r5 ... r10 == syscall arguments * and return the result in r3 @@ -71,21 +68,22 @@ safe_syscall_start: /* if signal_pending is non-zero, don't do the call */ lwz 12, 0(14) cmpwi 0, 12, 0 - bne- 0f + bne- 2f sc safe_syscall_end: /* code path when we did execute the syscall */ - ld 14, 16(1) /* restore r14 to its original value */ - bnslr+ - - /* syscall failed; return negative errno */ - neg 3, 3 + ld 14, 16(1) /* restore r14 */ + bso- 1f blr /* code path when we didn't execute the syscall */ -0: addi 3, 0, -TARGET_ERESTARTSYS - ld 14, 16(1) /* restore r14 to its original value */ - blr +2: ld 14, 16(1) /* restore r14 */ + addi 3, 0, TARGET_ERESTARTSYS + + /* code path setting errno */ +1: b safe_syscall_set_errno_tail + nop /* per abi, for the linker to modify */ + .cfi_endproc #if _CALL_ELF == 2 |