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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2013-11-26 10:17:00 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2013-12-10 14:35:33 +0100 |
| commit | 0644d1da7f547ba1b49ca95553ba65695ce9a3c3 (patch) | |
| tree | 17088ff15ef3eb381bc989f6e863316699f828d5 /arch/arm/include/asm/barebox-arm.h | |
| parent | 509f62209907d6cc4c8d4b4e95aff91c7684f5db (diff) | |
| download | barebox-0644d1da7f547ba1b49ca95553ba65695ce9a3c3.tar.gz barebox-0644d1da7f547ba1b49ca95553ba65695ce9a3c3.tar.xz | |
ARM: Make ENTRY_FUNCTION more robust
An entry function should begin with a exception header. For this to work
properly the entry function should not contain any code which gcc might
put before the header. To make this sure change the ENTRY_FUNCTION macro
so that it generates one function which only contains the exception header
and a second function which contains the original body of the entry function.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/include/asm/barebox-arm.h')
| -rw-r--r-- | arch/arm/include/asm/barebox-arm.h | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/arch/arm/include/asm/barebox-arm.h b/arch/arm/include/asm/barebox-arm.h index 622bd13622..faf9afaab9 100644 --- a/arch/arm/include/asm/barebox-arm.h +++ b/arch/arm/include/asm/barebox-arm.h @@ -79,8 +79,18 @@ static inline unsigned long arm_barebox_image_place(unsigned long endmem) return endmem; } -#define ENTRY_FUNCTION(name) \ - void __naked __section(.text_head_entry_##name) \ - name +#define ENTRY_FUNCTION(name, arg0, arg1, arg2) \ + static void __##name(uint32_t, uint32_t, uint32_t); \ + \ + void __naked __section(.text_head_entry_##name) name \ + (uint32_t r0, uint32_t r1, uint32_t r2) \ + { \ + __barebox_arm_head(); \ + __##name(r0, r1, r2); \ + } \ + static void __naked noinline __##name \ + (uint32_t arg0, uint32_t arg1, uint32_t arg2) + + #endif /* _BAREBOX_ARM_H_ */ |