diff options
Diffstat (limited to 'arch/arm/include/asm/assembler.h')
| -rw-r--r-- | arch/arm/include/asm/assembler.h | 50 |
1 files changed, 46 insertions, 4 deletions
diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h index 5c2285160575..b974184f9941 100644 --- a/arch/arm/include/asm/assembler.h +++ b/arch/arm/include/asm/assembler.h @@ -23,6 +23,7 @@ #include <asm/ptrace.h> #include <asm/domain.h> #include <asm/opcodes-virt.h> +#include <asm/asm-offsets.h> #define IOMEM(x) (x) @@ -30,8 +31,8 @@ * Endian independent macros for shifting bytes within registers. */ #ifndef __ARMEB__ -#define pull lsr -#define push lsl +#define lspull lsr +#define lspush lsl #define get_byte_0 lsl #0 #define get_byte_1 lsr #8 #define get_byte_2 lsr #16 @@ -41,8 +42,8 @@ #define put_byte_2 lsl #16 #define put_byte_3 lsl #24 #else -#define pull lsl -#define push lsr +#define lspull lsl +#define lspush lsr #define get_byte_0 lsr #24 #define get_byte_1 lsr #16 #define get_byte_2 lsr #8 @@ -174,6 +175,47 @@ restore_irqs_notrace \oldcpsr .endm +/* + * Get current thread_info. + */ + .macro get_thread_info, rd + ARM( mov \rd, sp, lsr #13 ) + THUMB( mov \rd, sp ) + THUMB( lsr \rd, \rd, #13 ) + mov \rd, \rd, lsl #13 + .endm + +/* + * Increment/decrement the preempt count. + */ +#ifdef CONFIG_PREEMPT_COUNT + .macro inc_preempt_count, ti, tmp + ldr \tmp, [\ti, #TI_PREEMPT] @ get preempt count + add \tmp, \tmp, #1 @ increment it + str \tmp, [\ti, #TI_PREEMPT] + .endm + + .macro dec_preempt_count, ti, tmp + ldr \tmp, [\ti, #TI_PREEMPT] @ get preempt count + sub \tmp, \tmp, #1 @ decrement it + str \tmp, [\ti, #TI_PREEMPT] + .endm + + .macro dec_preempt_count_ti, ti, tmp + get_thread_info \ti + dec_preempt_count \ti, \tmp + .endm +#else + .macro inc_preempt_count, ti, tmp + .endm + + .macro dec_preempt_count, ti, tmp + .endm + + .macro dec_preempt_count_ti, ti, tmp + .endm +#endif + #define USER(x...) \ 9999: x; \ .pushsection __ex_table,"a"; \ |