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runtime: add symbol for AT_FDCWD on Linux amd64 and mips64x

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Also order the syscall number list by numerically for mips64x.

Follow-up for CL 92895.

Change-Id: I5f01f8c626132a06160997fce8a2aef0c486bb1c
Reviewed-on: https://go-review.googlesource.com/93616
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Tobias Klauser 2018-02-13 17:07:54 +01:00 committed by Tobias Klauser
parent 32a0a1d37c
commit 0e1bcfc638
2 changed files with 7 additions and 3 deletions
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4
src/runtime/sys_linux_amd64.s
View File

@ -10,6 +10,8 @@
#include "go_tls.h"
#include "textflag.h"
#define AT_FDCWD -100
#define SYS_read 0
#define SYS_write 1
#define SYS_close 3
@ -66,7 +68,7 @@ TEXT runtime·exitThread(SB),NOSPLIT,$0-8
TEXT runtime·open(SB),NOSPLIT,$0-20
// This uses openat instead of open, because Android O blocks open.
MOVL $-100, DI // AT_FDCWD, so this acts like open
MOVL $AT_FDCWD, DI // AT_FDCWD, so this acts like open
MOVQ name+0(FP), SI
MOVL mode+8(FP), DX
MOVL perm+12(FP), R10

6
src/runtime/sys_linux_mips64x.s
View File

@ -13,10 +13,11 @@
#include "go_tls.h"
#include "textflag.h"
#define AT_FDCWD -100
#define SYS_exit 5058
#define SYS_read 5000
#define SYS_write 5001
#define SYS_openat 5247
#define SYS_close 5003
#define SYS_getpid 5038
#define SYS_kill 5060
@ -42,6 +43,7 @@
#define SYS_exit_group 5205
#define SYS_epoll_create 5207
#define SYS_epoll_ctl 5208
#define SYS_openat 5247
#define SYS_epoll_pwait 5272
#define SYS_clock_gettime 5222
#define SYS_epoll_create1 5285
@ -68,7 +70,7 @@ TEXT runtime·exitThread(SB),NOSPLIT|NOFRAME,$0-8
TEXT runtime·open(SB),NOSPLIT|NOFRAME,$0-20
// This uses openat instead of open, because Android O blocks open.
MOVW $-100, R4 // AT_FDCWD, so this acts like open
MOVW $AT_FDCWD, R4 // AT_FDCWD, so this acts like open
MOVV name+0(FP), R5
MOVW mode+8(FP), R6
MOVW perm+12(FP), R7