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authorAndreas Bießmann <andreas.devel@googlemail.com>2010-12-01 00:58:34 +0100
committerWolfgang Denk <wd@denx.de>2010-12-09 11:01:15 +0100
commita1a47d3c57e3bc3c49bc1eca94c00eba4880d2c3 (patch)
tree0f17f75076e1a8c6ee7d868c3924722a7c803f15 /arch
parenta78fb68f718383ba7eea410340be66e94cd3540d (diff)
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arm: relocate_code(): do not set register useless
In case we are still at relocation target address before relocation we do not need to load the registers needed for relocation. We should instead skip the whole relocation part and jump over to clear_bss immediately. Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/cpu/arm1136/start.S4
-rw-r--r--arch/arm/cpu/arm1176/start.S4
-rw-r--r--arch/arm/cpu/arm720t/start.S4
-rw-r--r--arch/arm/cpu/arm920t/start.S4
-rw-r--r--arch/arm/cpu/arm925t/start.S4
-rw-r--r--arch/arm/cpu/arm926ejs/start.S4
-rw-r--r--arch/arm/cpu/arm946es/start.S4
-rw-r--r--arch/arm/cpu/arm_intcm/start.S4
-rw-r--r--arch/arm/cpu/armv7/start.S8
-rw-r--r--arch/arm/cpu/ixp/start.S4
-rw-r--r--arch/arm/cpu/lh7a40x/start.S4
-rw-r--r--arch/arm/cpu/pxa/start.S4
-rw-r--r--arch/arm/cpu/s3c44b0/start.S4
-rw-r--r--arch/arm/cpu/sa1100/start.S4
14 files changed, 30 insertions, 30 deletions
diff --git a/arch/arm/cpu/arm1136/start.S b/arch/arm/cpu/arm1136/start.S
index 7e3b310..df17fe3 100644
--- a/arch/arm/cpu/arm1136/start.S
+++ b/arch/arm/cpu/arm1136/start.S
@@ -193,12 +193,12 @@ stack_setup:
mov sp, r4
adr r0, _start
+ cmp r0, r6
+ beq clear_bss /* skip relocation */
mov r1, r6 /* r1 <- scratch for copy_loop */
ldr r2, _TEXT_BASE
ldr r3, _bss_start_ofs
add r2, r0, r3 /* r2 <- source end address */
- cmp r0, r6
- beq clear_bss
copy_loop:
ldmia r0!, {r9-r10} /* copy from source address [r0] */
diff --git a/arch/arm/cpu/arm1176/start.S b/arch/arm/cpu/arm1176/start.S
index 5c18993..ab75109 100644
--- a/arch/arm/cpu/arm1176/start.S
+++ b/arch/arm/cpu/arm1176/start.S
@@ -247,12 +247,12 @@ stack_setup:
mov sp, r4
adr r0, _start
+ cmp r0, r6
+ beq clear_bss /* skip relocation */
mov r1, r6 /* r1 <- scratch for copy_loop */
ldr r2, _TEXT_BASE
ldr r3, _bss_start_ofs
add r2, r0, r3 /* r2 <- source end address */
- cmp r0, r6
- beq clear_bss
copy_loop:
ldmia r0!, {r9-r10} /* copy from source address [r0] */
diff --git a/arch/arm/cpu/arm720t/start.S b/arch/arm/cpu/arm720t/start.S
index e3d8159..84ccaf3 100644
--- a/arch/arm/cpu/arm720t/start.S
+++ b/arch/arm/cpu/arm720t/start.S
@@ -162,12 +162,12 @@ stack_setup:
mov sp, r4
adr r0, _start
+ cmp r0, r6
+ beq clear_bss /* skip relocation */
mov r1, r6 /* r1 <- scratch for copy_loop */
ldr r2, _TEXT_BASE
ldr r3, _bss_start_ofs
add r2, r0, r3 /* r2 <- source end address */
- cmp r0, r6
- beq clear_bss
copy_loop:
ldmia r0!, {r9-r10} /* copy from source address [r0] */
diff --git a/arch/arm/cpu/arm920t/start.S b/arch/arm/cpu/arm920t/start.S
index b8d20d3..97ceb7a 100644
--- a/arch/arm/cpu/arm920t/start.S
+++ b/arch/arm/cpu/arm920t/start.S
@@ -208,12 +208,12 @@ stack_setup:
mov sp, r4
adr r0, _start
+ cmp r0, r6
+ beq clear_bss /* skip relocation */
mov r1, r6 /* r1 <- scratch for copy_loop */
ldr r2, _TEXT_BASE
ldr r3, _bss_start_ofs
add r2, r0, r3 /* r2 <- source end address */
- cmp r0, r6
- beq clear_bss
copy_loop:
ldmia r0!, {r9-r10} /* copy from source address [r0] */
diff --git a/arch/arm/cpu/arm925t/start.S b/arch/arm/cpu/arm925t/start.S
index 6d6d8f8..0e6d413 100644
--- a/arch/arm/cpu/arm925t/start.S
+++ b/arch/arm/cpu/arm925t/start.S
@@ -199,12 +199,12 @@ stack_setup:
mov sp, r4
adr r0, _start
+ cmp r0, r6
+ beq clear_bss /* skip relocation */
mov r1, r6 /* r1 <- scratch for copy_loop */
ldr r2, _TEXT_BASE
ldr r3, _bss_start_ofs
add r2, r0, r3 /* r2 <- source end address */
- cmp r0, r6
- beq clear_bss
copy_loop:
ldmia r0!, {r9-r10} /* copy from source address [r0] */
diff --git a/arch/arm/cpu/arm926ejs/start.S b/arch/arm/cpu/arm926ejs/start.S
index d3f5630..32001e8 100644
--- a/arch/arm/cpu/arm926ejs/start.S
+++ b/arch/arm/cpu/arm926ejs/start.S
@@ -198,12 +198,12 @@ stack_setup:
mov sp, r4
adr r0, _start
+ cmp r0, r6
+ beq clear_bss /* skip relocation */
mov r1, r6 /* r1 <- scratch for copy loop */
ldr r2, _TEXT_BASE
ldr r3, _bss_start_ofs
add r2, r0, r3 /* r2 <- source end address */
- cmp r0, r6
- beq clear_bss
copy_loop:
ldmia r0!, {r9-r10} /* copy from source address [r0] */
diff --git a/arch/arm/cpu/arm946es/start.S b/arch/arm/cpu/arm946es/start.S
index e3a84a1..0794777 100644
--- a/arch/arm/cpu/arm946es/start.S
+++ b/arch/arm/cpu/arm946es/start.S
@@ -170,12 +170,12 @@ stack_setup:
mov sp, r4
adr r0, _start
+ cmp r0, r6
+ beq clear_bss /* skip relocation */
mov r1, r6 /* r1 <- scratch for copy_loop */
ldr r2, _TEXT_BASE
ldr r3, _bss_start_ofs
add r2, r0, r3 /* r2 <- source end address */
- cmp r0, r6
- beq clear_bss
copy_loop:
ldmia r0!, {r9-r10} /* copy from source address [r0] */
diff --git a/arch/arm/cpu/arm_intcm/start.S b/arch/arm/cpu/arm_intcm/start.S
index 752c2a5..8091252 100644
--- a/arch/arm/cpu/arm_intcm/start.S
+++ b/arch/arm/cpu/arm_intcm/start.S
@@ -166,12 +166,12 @@ stack_setup:
mov sp, r4
adr r0, _start
+ cmp r0, r6
+ beq clear_bss /* skip relocation */
mov r1, r6 /* r1 <- scratch for copy_loop */
ldr r2, _TEXT_BASE
ldr r3, _bss_start_ofs
add r2, r0, r3 /* r2 <- source end address */
- cmp r0, r6
- beq clear_bss
copy_loop:
ldmia r0!, {r9-r10} /* copy from source address [r0] */
diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S
index fe98235..0cb5f34 100644
--- a/arch/arm/cpu/armv7/start.S
+++ b/arch/arm/cpu/armv7/start.S
@@ -166,14 +166,14 @@ stack_setup:
mov sp, r4
adr r0, _start
- ldr r2, _TEXT_BASE
- ldr r3, _bss_start_ofs
- add r2, r0, r3 /* r2 <- source end address */
- mov r1, r6 /* r1 <- scratch for copy_loop */
cmp r0, r6
#ifndef CONFIG_PRELOADER
beq jump_2_ram
#endif
+ mov r1, r6 /* r1 <- scratch for copy_loop */
+ ldr r2, _TEXT_BASE
+ ldr r3, _bss_start_ofs
+ add r2, r0, r3 /* r2 <- source end address */
copy_loop:
ldmia r0!, {r9-r10} /* copy from source address [r0] */
diff --git a/arch/arm/cpu/ixp/start.S b/arch/arm/cpu/ixp/start.S
index 6126400..087f594 100644
--- a/arch/arm/cpu/ixp/start.S
+++ b/arch/arm/cpu/ixp/start.S
@@ -292,12 +292,12 @@ stack_setup:
mov sp, r4
adr r0, _start
+ cmp r0, r6
+ beq clear_bss /* skip relocation */
mov r1, r6 /* r1 <- scratch for copy_loop */
ldr r2, _TEXT_BASE
ldr r3, _bss_start_ofs
add r2, r0, r3 /* r2 <- source end address */
- cmp r0, r6
- beq clear_bss
copy_loop:
ldmia r0!, {r9-r10} /* copy from source address [r0] */
diff --git a/arch/arm/cpu/lh7a40x/start.S b/arch/arm/cpu/lh7a40x/start.S
index e9af263..94eb00e 100644
--- a/arch/arm/cpu/lh7a40x/start.S
+++ b/arch/arm/cpu/lh7a40x/start.S
@@ -179,12 +179,12 @@ stack_setup:
mov sp, r4
adr r0, _start
+ cmp r0, r6
+ beq clear_bss /* skip relocation */
mov r1, r6 /* r1 <- scratch for copy_loop */
ldr r2, _TEXT_BASE
ldr r3, _bss_start_ofs
add r2, r0, r3 /* r2 <- source end address */
- cmp r0, r6
- beq clear_bss
copy_loop:
ldmia r0!, {r9-r10} /* copy from source address [r0] */
diff --git a/arch/arm/cpu/pxa/start.S b/arch/arm/cpu/pxa/start.S
index 7e1c6e6..53391ec 100644
--- a/arch/arm/cpu/pxa/start.S
+++ b/arch/arm/cpu/pxa/start.S
@@ -244,12 +244,12 @@ stack_setup:
mov sp, r4
adr r0, _start
+ cmp r0, r6
+ beq clear_bss /* skip relocation */
mov r1, r6 /* r1 <- scratch for copy_loop */
ldr r2, _TEXT_BASE
ldr r3, _bss_start_ofs
add r2, r0, r3 /* r2 <- source end address */
- cmp r0, r6
- beq clear_bss
stmfd sp!, {r0-r12}
copy_loop:
diff --git a/arch/arm/cpu/s3c44b0/start.S b/arch/arm/cpu/s3c44b0/start.S
index 89e42b1..e992c38 100644
--- a/arch/arm/cpu/s3c44b0/start.S
+++ b/arch/arm/cpu/s3c44b0/start.S
@@ -151,12 +151,12 @@ stack_setup:
mov sp, r4
adr r0, _start
+ cmp r0, r6
+ beq clear_bss /* skip relocation */
mov r1, r6 /* r1 <- scratch for copy_loop */
ldr r2, _TEXT_BASE
ldr r3, _bss_start_ofs
add r2, r0, r3 /* r2 <- source end address */
- cmp r0, r6
- beq clear_bss
copy_loop:
ldmia r0!, {r9-r10} /* copy from source address [r0] */
diff --git a/arch/arm/cpu/sa1100/start.S b/arch/arm/cpu/sa1100/start.S
index a769687..1246b78 100644
--- a/arch/arm/cpu/sa1100/start.S
+++ b/arch/arm/cpu/sa1100/start.S
@@ -155,12 +155,12 @@ stack_setup:
mov sp, r4
adr r0, _start
+ cmp r0, r6
+ beq clear_bss /* skip relocation */
mov r1, r6 /* r1 <- scratch for copy_loop */
ldr r2, _TEXT_BASE
ldr r3, _bss_start_ofs
add r2, r0, r3 /* r2 <- source end address */
- cmp r0, r6
- beq clear_bss
copy_loop:
ldmia r0!, {r9-r10} /* copy from source address [r0] */
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