| 35,9 → 35,29 |
|---|
| #ifndef KERN_sparc64_sun4v_CPU_H_ |
| #define KERN_sparc64_sun4v_CPU_H_ |
| |
| /* Maximum number of virtual processors. */ |
| #define MAX_NUM_STRANDS 64 |
| |
| /* |
| * Size of pair of pointers (one pointer to kernel stack, |
| * one to uspace window buffer). |
| */ |
| #define KSTACK_WBUF_PTR_SIZE (2 * 8) |
| |
| #ifndef __ASM__ |
| |
| /** |
| * Pair of two pointers, the first one points to the kernel stack of |
| * a userspace thread, the second one points to the userspace window |
| * buffer of the userspace thread. For each CPU there exists exactly |
| * one isntance of this structure. |
| */ |
| typedef struct { |
| uintptr_t kstack; |
| uintptr_t wbuf; |
| } __attribute__ ((packed)) kstack_wbuf_ptr ; |
| |
| typedef struct { |
| uint64_t id; /**< virtual processor ID */ |
| uint32_t mid; // TODO: left here only to keep the code compilable!!! |
| uint32_t clock_frequency; /**< Processor frequency in Hz. */ |
| 46,12 → 66,35 |
|---|
| matches this value. */ |
| } cpu_arch_t; |
| |
| /* Maximum number of virtual processors. */ |
| #define MAX_NUM_STRANDS 64 |
| |
| #endif |
| |
| #ifdef __ASM__ |
| |
| /* |
| * Computes the pointer to the kstack_wbuf_ptr structure of the current CPU. |
| * |
| * Parameters: |
| * tmpreg1 global register to be used for scratching purposes |
| * result register where the resulting pointer will be saved |
| */ |
| .macro get_kstack_wbuf_ptr tmpreg1, result |
| ! load CPUID to tmpreg1 |
| or %g0, SCRATCHPAD_CPUID, \tmpreg1 |
| ldxa [\tmpreg1] ASI_SCRATCHPAD, \tmpreg1 |
| |
| ! compute offset within the array of kstack_wbuf_ptr structures (each |
| ! such structure is 16 bytes long) |
| mulx \tmpreg1, KSTACK_WBUF_PTR_SIZE, \tmpreg1 |
| |
| ! compute the pointer to the structure for the current CPU |
| sethi %hi(kstack_wbuf_ptrs), \result |
| or \result, %lo(kstack_wbuf_ptrs), \result |
| add \result, \tmpreg1, \result |
| .endm |
| |
| #endif |
| |
| #endif |
| |
| /** @} |
| */ |