diff options
Diffstat (limited to 'machine')
| -rw-r--r-- | machine/mtrap.h | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/machine/mtrap.h b/machine/mtrap.h index a8dbeff..e9ef139 100644 --- a/machine/mtrap.h +++ b/machine/mtrap.h @@ -48,9 +48,14 @@ typedef struct { volatile uint32_t* plic_s_ie; } hls_t; -#define MACHINE_STACK_TOP() ({ \ - register uintptr_t sp asm ("sp"); \ - (void*)((sp + RISCV_PGSIZE) & -RISCV_PGSIZE); }) +#define STACK_POINTER() ({ \ + uintptr_t __sp; \ + __asm__("mv %0, sp" : "=r"(__sp)); \ + __sp; \ +}) + +#define MACHINE_STACK_TOP() \ + ({ (void*)((STACK_POINTER() + RISCV_PGSIZE) & -RISCV_PGSIZE); }) // hart-local storage, at top of stack #define HLS() ((hls_t*)(MACHINE_STACK_TOP() - HLS_SIZE)) |