mirror
/
go
mirror of https://github.com/golang/go.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

runtime: use m and g, instead of R9 and R10, in ARM assembly files 

also don't clobber R9 if it is about to crash.

In response to https://golang.org/cl/9251043/#msg2.

R=golang-dev, khr, khr, dave
CC=golang-dev
https://golang.org/cl/9778046
This commit is contained in:
Shenghou Ma 2013-05-28 20:13:02 +08:00
parent 828c68f8d8
commit d8fd8d89ea
3 changed files with 46 additions and 48 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
src/pkg/runtime/sys_freebsd_arm.s
View File

@ -26,32 +26,30 @@ TEXT runtime·thr_new(SB),7,$0
RET
TEXT runtime·thr_start(SB),7,$0
MOVW R0, R9 // m
// TODO(minux): set up TLS?
MOVW R0, m
// set up g
MOVW m_g0(R9), R10
MOVW m_g0(m), g
BL runtime·emptyfunc(SB) // fault if stack check is wrong
BL runtime·mstart(SB)
MOVW $2, R9 // crash (not reached)
MOVW R9, (R9)
MOVW $2, R8 // crash (not reached)
MOVW R8, (R8)
RET
// Exit the entire program (like C exit)
TEXT runtime·exit(SB),7,$-8
MOVW 0(FP), R0 // arg 1 exit status
SWI $1
MOVW.CS $0, R9 // crash on syscall failure
MOVW.CS R9, (R9)
MOVW.CS $0, R8 // crash on syscall failure
MOVW.CS R8, (R8)
RET
TEXT runtime·exit1(SB),7,$-8
MOVW 0(FP), R0 // arg 1 exit status
SWI $431
MOVW.CS $0, R9 // crash on syscall failure
MOVW.CS R9, (R9)
MOVW.CS $0, R8 // crash on syscall failure
MOVW.CS R8, (R8)
RET
TEXT runtime·open(SB),7,$-8
@ -146,8 +144,8 @@ TEXT runtime·sigaction(SB),7,$-8
MOVW 4(FP), R1 // arg 2 act
MOVW 8(FP), R2 // arg 3 oact
SWI $416
MOVW.CS $0, R9 // crash on syscall failure
MOVW.CS R9, (R9)
MOVW.CS $0, R8 // crash on syscall failure
MOVW.CS R8, (R8)
RET
TEXT runtime·sigtramp(SB),7,$24
@ -166,11 +164,11 @@ TEXT runtime·sigtramp(SB),7,$24
RET
// save g
MOVW R10, R4
MOVW R10, 20(R13)
MOVW g, R4
MOVW g, 20(R13)
// g = m->signal
MOVW m_gsignal(R9), R10
MOVW m_gsignal(m), g
// R0 is already saved
MOVW R1, 8(R13) // info
@ -180,7 +178,7 @@ TEXT runtime·sigtramp(SB),7,$24
BL runtime·sighandler(SB)
// restore g
MOVW 20(R13), R10
MOVW 20(R13), g
RET
TEXT runtime·mmap(SB),7,$12
@ -205,8 +203,8 @@ TEXT runtime·munmap(SB),7,$0
MOVW 0(FP), R0 // arg 1 addr
MOVW 4(FP), R1 // arg 2 len
SWI $73
MOVW.CS $0, R9 // crash on syscall failure
MOVW.CS R9, (R9)
MOVW.CS $0, R8 // crash on syscall failure
MOVW.CS R8, (R8)
RET
TEXT runtime·madvise(SB),7,$0
@ -221,8 +219,8 @@ TEXT runtime·sigaltstack(SB),7,$-8
MOVW new+0(FP), R0
MOVW old+4(FP), R1
SWI $53
MOVW.CS $0, R9 // crash on syscall failure
MOVW.CS R9, (R9)
MOVW.CS $0, R8 // crash on syscall failure
MOVW.CS R8, (R8)
RET
TEXT runtime·usleep(SB),7,$16
@ -265,8 +263,8 @@ TEXT runtime·sigprocmask(SB),7,$0
MOVW 0(FP), R1 // arg 2 - set
MOVW 4(FP), R2 // arg 3 - oset
SWI $340 // sys_sigprocmask
MOVW.CS $0, R9 // crash on syscall failure
MOVW.CS R9, (R9)
MOVW.CS $0, R8 // crash on syscall failure
MOVW.CS R8, (R8)
RET
TEXT runtime·casp(SB),7,$0

8
src/pkg/runtime/sys_linux_arm.s
View File

@ -127,8 +127,8 @@ TEXT runtime·munmap(SB),7,$0
SWI $0
MOVW $0xfffff001, R6
CMP R6, R0
MOVW.HI $0, R9 // crash on syscall failure
MOVW.HI R9, (R9)
MOVW.HI $0, R8 // crash on syscall failure
MOVW.HI R8, (R8)
RET
TEXT runtime·madvise(SB),7,$0
@ -278,8 +278,8 @@ TEXT runtime·sigaltstack(SB),7,$0
SWI $0
MOVW $0xfffff001, R6
CMP R6, R0
MOVW.HI $0, R9 // crash on syscall failure
MOVW.HI R9, (R9)
MOVW.HI $0, R8 // crash on syscall failure
MOVW.HI R8, (R8)
RET
TEXT runtime·sigtramp(SB),7,$24

44
src/pkg/runtime/sys_netbsd_arm.s
View File

@ -12,14 +12,14 @@
TEXT runtime·exit(SB),7,$-4
MOVW 0(FP), R0 // arg 1 exit status
SWI $0xa00001
MOVW.CS $0, R9 // crash on syscall failure
MOVW.CS R9, (R9)
MOVW.CS $0, R8 // crash on syscall failure
MOVW.CS R8, (R8)
RET
TEXT runtime·exit1(SB),7,$-4
SWI $0xa00136 // sys__lwp_exit
MOVW $1, R9 // crash
MOVW R9, (R9)
MOVW $1, R8 // crash
MOVW R8, (R8)
RET
TEXT runtime·open(SB),7,$-8
@ -79,13 +79,13 @@ TEXT runtime·lwp_self(SB),7,$0
RET
TEXT runtime·lwp_tramp(SB),7,$0
MOVW R0, R9 // m
MOVW R1, R10 // g
MOVW R0, m
MOVW R1, g
BL runtime·emptyfunc(SB) // fault if stack check is wrong
BL (R2)
MOVW $2, R9 // crash (not reached)
MOVW R9, (R9)
MOVW $2, R8 // crash (not reached)
MOVW R8, (R8)
RET
TEXT runtime·usleep(SB),7,$16
@ -160,8 +160,8 @@ TEXT runtime·nanotime(SB), 7, $32
TEXT runtime·getcontext(SB),7,$-4
MOVW 0(FP), R0 // arg 1 - context
SWI $0xa00133 // sys_getcontext
MOVW.CS $0, R9 // crash on syscall failure
MOVW.CS R9, (R9)
MOVW.CS $0, R8 // crash on syscall failure
MOVW.CS R8, (R8)
RET
TEXT runtime·sigprocmask(SB),7,$0
@ -169,8 +169,8 @@ TEXT runtime·sigprocmask(SB),7,$0
MOVW 4(FP), R1 // arg 2 - set
MOVW 8(FP), R2 // arg 3 - oset
SWI $0xa00125 // sys_sigprocmask
MOVW.CS $0, R9 // crash on syscall failure
MOVW.CS R9, (R9)
MOVW.CS $0, R8 // crash on syscall failure
MOVW.CS R8, (R8)
RET
TEXT runtime·sigreturn_tramp(SB),7,$-4
@ -193,8 +193,8 @@ TEXT runtime·sigaction(SB),7,$4
ADD $4, R13 // pass arg 5 on stack
SWI $0xa00154 // sys___sigaction_sigtramp
SUB $4, R13
MOVW.CS $3, R9 // crash on syscall failure
MOVW.CS R9, (R9)
MOVW.CS $3, R8 // crash on syscall failure
MOVW.CS R8, (R8)
RET
TEXT runtime·sigtramp(SB),7,$24
@ -213,11 +213,11 @@ TEXT runtime·sigtramp(SB),7,$24
RET
// save g
MOVW R10, R4
MOVW R10, 20(R13)
MOVW g, R4
MOVW g, 20(R13)
// g = m->signal
MOVW m_gsignal(R9), R10
MOVW m_gsignal(m), g
// R0 is already saved
MOVW R1, 8(R13) // info
@ -230,7 +230,7 @@ TEXT runtime·sigtramp(SB),7,$24
BL runtime·sighandler(SB)
// restore g
MOVW 20(R13), R10
MOVW 20(R13), g
RET
TEXT runtime·mmap(SB),7,$12
@ -255,8 +255,8 @@ TEXT runtime·munmap(SB),7,$0
MOVW 0(FP), R0 // arg 1 - addr
MOVW 4(FP), R1 // arg 2 - len
SWI $0xa00049 // sys_munmap
MOVW.CS $0, R9 // crash on syscall failure
MOVW.CS R9, (R9)
MOVW.CS $0, R8 // crash on syscall failure
MOVW.CS R8, (R8)
RET
TEXT runtime·madvise(SB),7,$0
@ -271,8 +271,8 @@ TEXT runtime·sigaltstack(SB),7,$-4
MOVW 0(FP), R0 // arg 1 - nss
MOVW 4(FP), R1 // arg 2 - oss
SWI $0xa00119 // sys___sigaltstack14
MOVW.CS $0, R9 // crash on syscall failure
MOVW.CS R9, (R9)
MOVW.CS $0, R8 // crash on syscall failure
MOVW.CS R8, (R8)
RET
TEXT runtime·sysctl(SB),7,$8