diff options
author | Jon Medhurst <tixy@linaro.org> | 2015-01-19 15:15:36 +0000 |
---|---|---|
committer | Jon Medhurst <tixy@linaro.org> | 2015-01-20 09:06:04 +0000 |
commit | fb892bd0fdcb2e5eac9c105cf68def90396ed8cc (patch) | |
tree | 193a2dd316d64e90705032e9870a7848d1be7b07 /arch/arm/probes/kprobes/test-core.c | |
parent | bfc9657d752c47d59dc0bab85ebdc19cf60100dd (diff) |
ARM: kprobes: Eliminate test code's use of BX instruction on ARMv4 CPUs
Non-T variants of ARMv4 CPUs don't support the BX instruction so
eliminate its use.
Signed-off-by: Jon Medhurst <tixy@linaro.org>
Diffstat (limited to 'arch/arm/probes/kprobes/test-core.c')
-rw-r--r-- | arch/arm/probes/kprobes/test-core.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/arch/arm/probes/kprobes/test-core.c b/arch/arm/probes/kprobes/test-core.c index e495127d7571..9775de22e2ff 100644 --- a/arch/arm/probes/kprobes/test-core.c +++ b/arch/arm/probes/kprobes/test-core.c @@ -236,6 +236,8 @@ static int tests_failed; #ifndef CONFIG_THUMB2_KERNEL +#define RET(reg) "mov pc, "#reg + long arm_func(long r0, long r1); static void __used __naked __arm_kprobes_test_func(void) @@ -245,7 +247,7 @@ static void __used __naked __arm_kprobes_test_func(void) ".type arm_func, %%function \n\t" "arm_func: \n\t" "adds r0, r0, r1 \n\t" - "bx lr \n\t" + "mov pc, lr \n\t" ".code "NORMAL_ISA /* Back to Thumb if necessary */ : : : "r0", "r1", "cc" ); @@ -253,6 +255,8 @@ static void __used __naked __arm_kprobes_test_func(void) #else /* CONFIG_THUMB2_KERNEL */ +#define RET(reg) "bx "#reg + long thumb16_func(long r0, long r1); long thumb32even_func(long r0, long r1); long thumb32odd_func(long r0, long r1); @@ -494,7 +498,7 @@ static void __naked benchmark_nop(void) { __asm__ __volatile__ ( "nop \n\t" - "bx lr" + RET(lr)" \n\t" ); } @@ -977,7 +981,7 @@ void __naked __kprobes_test_case_start(void) "bic r0, lr, #1 @ r0 = inline data \n\t" "mov r1, sp \n\t" "bl kprobes_test_case_start \n\t" - "bx r0 \n\t" + RET(r0)" \n\t" ); } |