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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2005-04-26 15:20:34 +0100
committerRussell King <rmk@dyn-67.arm.linux.org.uk>2005-04-26 15:20:34 +0100
commitf4dc9a4cf26278f5b608d6e4bd16e7b27ddcf1a5 (patch)
tree79d956ff351892230ca46e4a30249b446e62daaf /arch
parentcf88b417f9b1365c5aeeffa5c41208be68adfd76 (diff)
downloadlinux-linaro-stable-f4dc9a4cf26278f5b608d6e4bd16e7b27ddcf1a5.tar.gz
[PATCH] ARM: Remove single-use user save/restore macros
Assembly macros are pointless if they're only used once. Move them inline. Signed-off-by: Russell King <rmk@arm.linux.org.uk>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/kernel/entry-common.S28
-rw-r--r--arch/arm/kernel/entry-header.S51
2 files changed, 25 insertions, 54 deletions
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index 65c58b34db97..07da010b67d4 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -27,7 +27,15 @@ ret_fast_syscall:
ldr r1, [tsk, #TI_FLAGS]
tst r1, #_TIF_WORK_MASK
bne fast_work_pending
- fast_restore_user_regs
+
+ @ fast_restore_user_regs
+ ldr r1, [sp, #S_OFF + S_PSR] @ get calling cpsr
+ ldr lr, [sp, #S_OFF + S_PC]! @ get pc
+ msr spsr_cxsf, r1 @ save in spsr_svc
+ ldmdb sp, {r1 - lr}^ @ get calling r1 - lr
+ mov r0, r0
+ add sp, sp, #S_FRAME_SIZE - S_PC
+ movs pc, lr @ return & move spsr_svc into cpsr
/*
* Ok, we need to do extra processing, enter the slow path.
@@ -57,7 +65,14 @@ ret_slow_syscall:
tst r1, #_TIF_WORK_MASK
bne work_pending
no_work_pending:
- slow_restore_user_regs
+ @ slow_restore_user_regs
+ ldr r1, [sp, #S_PSR] @ get calling cpsr
+ ldr lr, [sp, #S_PC]! @ get pc
+ msr spsr_cxsf, r1 @ save in spsr_svc
+ ldmdb sp, {r0 - lr}^ @ get calling r1 - lr
+ mov r0, r0
+ add sp, sp, #S_FRAME_SIZE - S_PC
+ movs pc, lr @ return & move spsr_svc into cpsr
/*
* This is how we return from a fork.
@@ -109,7 +124,14 @@ ENTRY(ret_from_fork)
.align 5
ENTRY(vector_swi)
- save_user_regs
+ sub sp, sp, #S_FRAME_SIZE
+ stmia sp, {r0 - r12} @ Calling r0 - r12
+ add r8, sp, #S_PC
+ stmdb r8, {sp, lr}^ @ Calling sp, lr
+ mrs r8, spsr @ called from non-FIQ mode, so ok.
+ str lr, [sp, #S_PC] @ Save calling PC
+ str r8, [sp, #S_PSR] @ Save CPSR
+ str r0, [sp, #S_OLD_R0] @ Save OLD_R0
zero_fp
/*
diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S
index b7d54a4f98f4..956af0bff3ff 100644
--- a/arch/arm/kernel/entry-header.S
+++ b/arch/arm/kernel/entry-header.S
@@ -57,57 +57,6 @@
.endm
#endif
- .macro save_user_regs
- sub sp, sp, #S_FRAME_SIZE
- stmia sp, {r0 - r12} @ Calling r0 - r12
- add r8, sp, #S_PC
- stmdb r8, {sp, lr}^ @ Calling sp, lr
- mrs r8, spsr @ called from non-FIQ mode, so ok.
- str lr, [sp, #S_PC] @ Save calling PC
- str r8, [sp, #S_PSR] @ Save CPSR
- str r0, [sp, #S_OLD_R0] @ Save OLD_R0
- .endm
-
- .macro restore_user_regs
- ldr r1, [sp, #S_PSR] @ Get calling cpsr
- disable_irq ip @ disable IRQs
- ldr lr, [sp, #S_PC]! @ Get PC
- msr spsr_cxsf, r1 @ save in spsr_svc
- ldmdb sp, {r0 - lr}^ @ Get calling r0 - lr
- mov r0, r0
- add sp, sp, #S_FRAME_SIZE - S_PC
- movs pc, lr @ return & move spsr_svc into cpsr
- .endm
-
-/*
- * Must be called with IRQs already disabled.
- */
- .macro fast_restore_user_regs
- ldr r1, [sp, #S_OFF + S_PSR] @ get calling cpsr
- ldr lr, [sp, #S_OFF + S_PC]! @ get pc
- msr spsr_cxsf, r1 @ save in spsr_svc
- ldmdb sp, {r1 - lr}^ @ get calling r1 - lr
- mov r0, r0
- add sp, sp, #S_FRAME_SIZE - S_PC
- movs pc, lr @ return & move spsr_svc into cpsr
- .endm
-
-/*
- * Must be called with IRQs already disabled.
- */
- .macro slow_restore_user_regs
- ldr r1, [sp, #S_PSR] @ get calling cpsr
- ldr lr, [sp, #S_PC]! @ get pc
- msr spsr_cxsf, r1 @ save in spsr_svc
- ldmdb sp, {r0 - lr}^ @ get calling r1 - lr
- mov r0, r0
- add sp, sp, #S_FRAME_SIZE - S_PC
- movs pc, lr @ return & move spsr_svc into cpsr
- .endm
-
- .macro mask_pc, rd, rm
- .endm
-
.macro get_thread_info, rd
mov \rd, sp, lsr #13
mov \rd, \rd, lsl #13