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| author | Elliott Hughes <enh@google.com> | 2014-01-02 15:41:33 -0800 |
|---|---|---|
| committer | Elliott Hughes <enh@google.com> | 2014-01-03 14:27:17 -0800 |
| commit | c5bf703c4cfa2ca4f35a83c9afaf4ee123cb617c (patch) | |
| tree | 59d892fb966be1108fde54815857f0696087d264 /libc | |
| parent | 7b0c23f1ac5df8654e0790b9eb3bbfcbf36c0e5f (diff) | |
| download | bionic-c5bf703c4cfa2ca4f35a83c9afaf4ee123cb617c.zip bionic-c5bf703c4cfa2ca4f35a83c9afaf4ee123cb617c.tar.gz bionic-c5bf703c4cfa2ca4f35a83c9afaf4ee123cb617c.tar.bz2 | |
Remove as many hard-coded constants from the MIPS vfork.S as possible.
We could do better, but not without MIPS cleaning up their kernel headers.
Change-Id: Ib4d4ce5d720ce8ca27a3f9a1ae07a9a277675af9
Diffstat (limited to 'libc')
| -rw-r--r-- | libc/arch-mips/bionic/vfork.S | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/libc/arch-mips/bionic/vfork.S b/libc/arch-mips/bionic/vfork.S index 2e2e4ff..414caaf 100644 --- a/libc/arch-mips/bionic/vfork.S +++ b/libc/arch-mips/bionic/vfork.S @@ -27,10 +27,13 @@ */ #include <asm/unistd.h> +#include <linux/sched.h> - .text +// TODO: mips' uapi signal.h is missing #ifndef __ASSEMBLY__. +// #include <asm/signal.h> +#define SIGCHLD 18 -/* int vfork() implemented using clone() */ + .text .type vfork, @function .global vfork @@ -40,17 +43,22 @@ vfork: .set noreorder .cpload $t9 - li $a0, 0x4112 /* CLONE_VM | CLONE_VFORK | SIGCHLD */ - move $a1, $sp + li $a0, (CLONE_VM | CLONE_VFORK | SIGCHLD) + li $a1, 0 + li $a2, 0 + li $a3, 0 + subu $sp, 8 + sw $0, 16($sp) li $v0, __NR_clone syscall - bnez $a3,1f - nop + addu $sp, 8 + bnez $a3, 1f + move $a0, $v0 j $ra nop 1: - la $t9,__set_errno + la $t9, __set_errno j $t9 - move $a0,$v0 + nop .end vfork |