diff options
Diffstat (limited to 'include/kernel')
| -rw-r--r-- | include/kernel/kernel/cpu.h | 68 |
1 files changed, 38 insertions, 30 deletions
diff --git a/include/kernel/kernel/cpu.h b/include/kernel/kernel/cpu.h index ca9e263..b3b2603 100644 --- a/include/kernel/kernel/cpu.h +++ b/include/kernel/kernel/cpu.h @@ -12,29 +12,32 @@ extern "C" { * * @param state The state */ -#define ENTER_SYSCALL(state) do { \ - asm volatile ("mrc p15, 0, %0, c13, c0, 3" : "=r" (state)); \ - asm volatile ("mcr p15, 0, %0, c13, c0, 3" :: "r" (state << 16) : "memory"); \ -} while(0) +#define ENTER_SYSCALL(state) \ + do { \ + asm volatile ("mrc p15, 0, %0, c13, c0, 3" : "=r" (state)); \ + asm volatile ("mcr p15, 0, %0, c13, c0, 3" :: "r" (state << 16) : "memory"); \ + } while(0) /** * @brief Call this when existing a syscall * * @param state The state */ -#define EXIT_SYSCALL(state) do { \ - asm volatile ("mcr p15, 0, %0, c13, c0, 3" :: "r" (state) : "memory"); \ -} while (0) +#define EXIT_SYSCALL(state) \ + do { \ + asm volatile ("mcr p15, 0, %0, c13, c0, 3" :: "r" (state) : "memory"); \ + } while (0) /** * @brief Save process context * * @param context The context */ -static inline void sceKernelCpuSaveContext(int context[3]) { - asm ("mrc p15, 0, %0, c2, c0, 1" : "=r" (context[0])); - asm ("mrc p15, 0, %0, c3, c0, 0" : "=r" (context[1])); - asm ("mrc p15, 0, %0, c13, c0, 1" : "=r" (context[2])); +static inline void sceKernelCpuSaveContext(int context[3]) +{ + asm ("mrc p15, 0, %0, c2, c0, 1" : "=r" (context[0])); + asm ("mrc p15, 0, %0, c3, c0, 0" : "=r" (context[1])); + asm ("mrc p15, 0, %0, c13, c0, 1" : "=r" (context[2])); } /** @@ -42,28 +45,33 @@ static inline void sceKernelCpuSaveContext(int context[3]) { * * @param context The context, can be from ::sceKernelGetPidContext */ -static inline void sceKernelCpuRestoreContext(int context[3]) { - int cpsr; - int tmp; - - asm volatile ("mrs %0, cpsr" : "=r" (cpsr)); - if (!(cpsr & 0x80)) { - asm volatile ("cpsid i" ::: "memory"); - } - asm volatile ("mrc p15, 0, %0, c13, c0, 1" : "=r" (tmp)); - tmp = (tmp & 0xFFFFFF00) | context[2]; - asm volatile ("mcr p15, 0, %0, c13, c0, 1" :: "r" (0)); - asm volatile ("isb" ::: "memory"); - asm volatile ("mcr p15, 0, %0, c2, c0, 1" :: "r" (context[0] | 0x4A)); - asm volatile ("isb" ::: "memory"); - asm volatile ("mcr p15, 0, %0, c13, c0, 1" :: "r" (tmp)); - asm volatile ("mcr p15, 0, %0, c3, c0, 0" :: "r" (context[1] & 0x55555555)); - if (!(cpsr & 0x80)) { - asm volatile ("cpsie i" ::: "memory"); - } +static inline void sceKernelCpuRestoreContext(int context[3]) +{ + int cpsr, tmp; + + asm volatile ("mrs %0, cpsr" : "=r" (cpsr)); + if (!(cpsr & 0x80)) + asm volatile ("cpsid i" ::: "memory"); + asm volatile ("mrc p15, 0, %0, c13, c0, 1" : "=r" (tmp)); + tmp = (tmp & 0xFFFFFF00) | context[2]; + asm volatile ("mcr p15, 0, %0, c13, c0, 1" :: "r" (0)); + asm volatile ("isb" ::: "memory"); + asm volatile ("mcr p15, 0, %0, c2, c0, 1" :: "r" (context[0] | 0x4A)); + asm volatile ("isb" ::: "memory"); + asm volatile ("mcr p15, 0, %0, c13, c0, 1" :: "r" (tmp)); + asm volatile ("mcr p15, 0, %0, c3, c0, 0" :: "r" (context[1] & 0x55555555)); + if (!(cpsr & 0x80)) + asm volatile ("cpsie i" ::: "memory"); } /** + * @brief Returns the CPU ID of the calling processor + * + * @return The CPU ID + */ +int sceKernelCpuGetCpuId(void); + +/** * @brief Disabled interrupts * * @return Interrupt masks before disabling |