| /branches/sparc/kernel/arch/sparc64/include/sun4v/arch.h |
|---|
| 51,6 → 51,12 |
| /* register where the CPUID will be stored */ |
| #define SCRATCHPAD_CPUID 0x08 |
| /* register where the kernel stack address will be stored */ |
| #define SCRATCHPAD_KSTACK 0x10 |
| /* register where the userspace window buffer address will be stored */ |
| #define SCRATCHPAD_WBUF 0x18 |
| #endif |
| /** @} |
| /branches/sparc/kernel/arch/sparc64/include/sun4v/cpu.h |
|---|
| 70,28 → 70,6 |
| #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 |
| /branches/sparc/kernel/arch/sparc64/include/trap/sun4v/regwin.h |
|---|
| 45,8 → 45,8 |
| * \tmpreg2 global register to be used for scratching purposes |
| */ |
| .macro SAVE_TO_USPACE_WBUF tmpreg1, tmpreg2 |
| get_kstack_wbuf_ptr \tmpreg1, \tmpreg2 |
| ldx [\tmpreg2 + 8], \tmpreg1 |
| set SCRATCHPAD_WBUF, \tmpreg2 |
| ldxa [\tmpreg2] ASI_SCRATCHPAD, \tmpreg1 |
| stx %l0, [\tmpreg1 + L0_OFFSET] |
| stx %l1, [\tmpreg1 + L1_OFFSET] |
| stx %l2, [\tmpreg1 + L2_OFFSET] |
| 64,7 → 64,7 |
| stx %i6, [\tmpreg1 + I6_OFFSET] |
| stx %i7, [\tmpreg1 + I7_OFFSET] |
| add \tmpreg1, STACK_WINDOW_SAVE_AREA_SIZE, \tmpreg1 |
| stx \tmpreg1, [\tmpreg2 + 8] |
| stxa \tmpreg1, [\tmpreg2] ASI_SCRATCHPAD |
| .endm |
| /* |