generic-library/bionic
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

am cc8668f2: Merge "[MIPS] Check error status from pipe system call"

Browse Source 
* commit 'cc8668f261ae5d0ed38961f357e33c026502ed0d':
  [MIPS] Check error status from pipe system call
This commit is contained in:
Elliott Hughes 2012-09-11 16:43:39 -07:00 committed by Android Git Automerger
commit 7f79814798
1 changed files with 16 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
libc/arch-mips/bionic/pipe.S
View File

@ -26,6 +26,12 @@
* SUCH DAMAGE. * SUCH DAMAGE.
*/ */
/*
* The MIPS pipe syscall returns results in two registers, which
* we have to copy into the supplied array. This prevents us from
* using an auto-generated stub.
*/
#include <asm/unistd.h> #include <asm/unistd.h>
.text .text
@ -38,12 +44,17 @@
.ent pipe .ent pipe
pipe: pipe:
.set noreorder .set noreorder
.cpload $t9
li $v0,__NR_pipe li $v0,__NR_pipe
syscall /* syscall returns results in v0,v1 */ syscall /* syscall returns results in v0,v1 */
bnez $a3, 1f /* check errno */
sw $v0,0($a0) nop
sw $v1,4($a0) sw $v0, 0($a0)
sw $v1, 4($a0)
j $ra j $ra
move $v0,$zero move $v0, $zero
1:
la $t9, __set_errno
j $t9
move $a0, $v0 /* delay slot, prepare args for __set_errno */
.end pipe .end pipe