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| author | Simon Glass <sjg@chromium.org> | 2014-11-10 18:00:24 -0700 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2014-11-21 07:24:12 +0100 |
| commit | 21b9b14b49b742c3ee70f819aab3918f517bf0b8 (patch) | |
| tree | 8ac47249a8ff2acc57db96ee24e5a603f4d00ea0 /arch/x86 | |
| parent | 880a3cc4381ac0e2e39ce3313e267fb3e297bc3f (diff) | |
| download | u-boot-imx-21b9b14b49b742c3ee70f819aab3918f517bf0b8.zip u-boot-imx-21b9b14b49b742c3ee70f819aab3918f517bf0b8.tar.gz u-boot-imx-21b9b14b49b742c3ee70f819aab3918f517bf0b8.tar.bz2 | |
x86: Add processor functions to halt and get stack pointer
Add a function to get the stack pointer and another to halt the CPU.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/processor.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index bb3172f..b2854a9 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -30,4 +30,23 @@ enum { #define X86_GDT_SIZE (X86_GDT_NUM_ENTRIES * X86_GDT_ENTRY_SIZE) +#ifndef __ASSEMBLY__ + +static inline __attribute__((always_inline)) void cpu_hlt(void) +{ + asm("hlt"); +} + +static inline ulong cpu_get_sp(void) +{ + ulong result; + + asm volatile( + "mov %%esp, %%eax" + : "=a" (result)); + return result; +} + +#endif /* __ASSEMBLY__ */ + #endif |