diff options
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/assembler.h | 42 | ||||
| -rw-r--r-- | arch/arm/include/asm/cputype.h | 19 | ||||
| -rw-r--r-- | arch/arm/include/asm/syscall.h | 5 |
3 files changed, 63 insertions, 3 deletions
diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h index 380ac4f20000..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) @@ -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"; \ diff --git a/arch/arm/include/asm/cputype.h b/arch/arm/include/asm/cputype.h index 42f0889f0584..c651e3b26ec7 100644 --- a/arch/arm/include/asm/cputype.h +++ b/arch/arm/include/asm/cputype.h @@ -221,4 +221,23 @@ static inline int cpu_is_xsc3(void) #define cpu_is_xscale() 1 #endif +/* + * Marvell's PJ4 core is based on V7 version. It has some modification + * for coprocessor setting. For this reason, we need a way to distinguish + * it. + */ +#ifndef CONFIG_CPU_PJ4 +#define cpu_is_pj4() 0 +#else +static inline int cpu_is_pj4(void) +{ + unsigned int id; + + id = read_cpuid_id(); + if ((id & 0xfffffff0) == 0x562f5840) + return 1; + + return 0; +} +#endif #endif diff --git a/arch/arm/include/asm/syscall.h b/arch/arm/include/asm/syscall.h index 73ddd7239b33..4651f6999b7d 100644 --- a/arch/arm/include/asm/syscall.h +++ b/arch/arm/include/asm/syscall.h @@ -7,7 +7,7 @@ #ifndef _ASM_ARM_SYSCALL_H #define _ASM_ARM_SYSCALL_H -#include <linux/audit.h> /* for AUDIT_ARCH_* */ +#include <uapi/linux/audit.h> /* for AUDIT_ARCH_* */ #include <linux/elf.h> /* for ELF_EM */ #include <linux/err.h> #include <linux/sched.h> @@ -103,8 +103,7 @@ static inline void syscall_set_arguments(struct task_struct *task, memcpy(®s->ARM_r0 + i, args, n * sizeof(args[0])); } -static inline int syscall_get_arch(struct task_struct *task, - struct pt_regs *regs) +static inline int syscall_get_arch(void) { /* ARM tasks don't change audit architectures on the fly. */ return AUDIT_ARCH_ARM; |
