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Merge ../linux-2.6

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This commit is contained in:
Paul Mackerras
2006-03-09 14:32:05 +11:00
parent 6749c55073 0d514f040a
commit 5164501794
270 changed files with 3169 additions and 2217 deletions
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94
arch/powerpc/kernel/entry_64.S
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@@ -159,7 +159,7 @@ syscall_exit:
mtmsrd r10,1
ld r9,TI_FLAGS(r12)
li r11,-_LAST_ERRNO
andi. r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SINGLESTEP|_TIF_SIGPENDING|_TIF_NEED_RESCHED|_TIF_RESTOREALL|_TIF_SAVE_NVGPRS|_TIF_NOERROR|_TIF_RESTORE_SIGMASK)
andi. r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SINGLESTEP|_TIF_USER_WORK_MASK|_TIF_PERSYSCALL_MASK)
bne- syscall_exit_work
cmpld r3,r11
ld r5,_CCR(r1)
@@ -216,8 +216,10 @@ syscall_exit_work:
If TIF_NOERROR is set, just save r3 as it is. */
andi. r0,r9,_TIF_RESTOREALL
bne- 2f
cmpld r3,r11 /* r10 is -LAST_ERRNO */
beq+ 0f
REST_NVGPRS(r1)
b 2f
0: cmpld r3,r11 /* r10 is -LAST_ERRNO */
blt+ 1f
andi. r0,r9,_TIF_NOERROR
bne- 1f
@@ -229,9 +231,7 @@ syscall_exit_work:
2: andi. r0,r9,(_TIF_PERSYSCALL_MASK)
beq 4f
/* Clear per-syscall TIF flags if any are set, but _leave_
_TIF_SAVE_NVGPRS set in r9 since we haven't dealt with that
yet. */
/* Clear per-syscall TIF flags if any are set. */
li r11,_TIF_PERSYSCALL_MASK
addi r12,r12,TI_FLAGS
@@ -240,10 +240,9 @@ syscall_exit_work:
stdcx. r10,0,r12
bne- 3b
subi r12,r12,TI_FLAGS
4: bl .save_nvgprs
/* Anything else left to do? */
andi. r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SINGLESTEP|_TIF_SAVE_NVGPRS)
4: /* Anything else left to do? */
andi. r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SINGLESTEP)
beq .ret_from_except_lite
/* Re-enable interrupts */
@@ -251,26 +250,10 @@ syscall_exit_work:
ori r10,r10,MSR_EE
mtmsrd r10,1
andi. r0,r9,_TIF_SAVE_NVGPRS
bne save_user_nvgprs
/* If tracing, re-enable interrupts and do it */
save_user_nvgprs_cont:
andi. r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SINGLESTEP)
beq 5f
bl .save_nvgprs
addi r3,r1,STACK_FRAME_OVERHEAD
bl .do_syscall_trace_leave
REST_NVGPRS(r1)
clrrdi r12,r1,THREAD_SHIFT
/* Disable interrupts again and handle other work if any */
5: mfmsr r10
rldicl r10,r10,48,1
rotldi r10,r10,16
mtmsrd r10,1
b .ret_from_except_lite
b .ret_from_except
/* Save non-volatile GPRs, if not already saved. */
_GLOBAL(save_nvgprs)
@@ -282,51 +265,6 @@ _GLOBAL(save_nvgprs)
std r0,_TRAP(r1)
blr
save_user_nvgprs:
ld r10,TI_SIGFRAME(r12)
andi. r0,r9,_TIF_32BIT
beq- save_user_nvgprs_64
/* 32-bit save to userspace */
.macro savewords start, end
1: stw \start,4*(\start)(r10)
.section __ex_table,"a"
.align 3
.llong 1b,save_user_nvgprs_fault
.previous
.if \end - \start
savewords "(\start+1)",\end
.endif
.endm
savewords 14,31
b save_user_nvgprs_cont
save_user_nvgprs_64:
/* 64-bit save to userspace */
.macro savelongs start, end
1: std \start,8*(\start)(r10)
.section __ex_table,"a"
.align 3
.llong 1b,save_user_nvgprs_fault
.previous
.if \end - \start
savelongs "(\start+1)",\end
.endif
.endm
savelongs 14,31
b save_user_nvgprs_cont
save_user_nvgprs_fault:
li r3,11 /* SIGSEGV */
ld r4,TI_TASK(r12)
bl .force_sigsegv
clrrdi r12,r1,THREAD_SHIFT
ld r9,TI_FLAGS(r12)
b save_user_nvgprs_cont
/*
* The sigsuspend and rt_sigsuspend system calls can call do_signal
@@ -352,6 +290,16 @@ _GLOBAL(ppc_clone)
bl .sys_clone
b syscall_exit
_GLOBAL(ppc32_swapcontext)
bl .save_nvgprs
bl .compat_sys_swapcontext
b syscall_exit
_GLOBAL(ppc64_swapcontext)
bl .save_nvgprs
bl .sys_swapcontext
b syscall_exit
_GLOBAL(ret_from_fork)
bl .schedule_tail
REST_NVGPRS(r1)