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| 35 | 35 | ||
| 36 | #ifndef __ALIGN_H__ |
36 | #ifndef __ALIGN_H__ |
| 37 | # include <align.h> |
37 | # include <align.h> |
| 38 | #endif |
38 | #endif |
| 39 | 39 | ||
| - | 40 | /** According to SPARC Compliance Definition, every stack frame is 16-byte aligned. */ |
|
| 40 | #define STACK_ALIGNMENT 8 |
41 | #define STACK_ALIGNMENT 16 |
| 41 | #define STACK_ITEM_SIZE 8 |
- | |
| 42 | 42 | ||
| - | 43 | #define STACK_ITEM_SIZE sizeof(__u64) |
|
| - | 44 | ||
| 43 | /* |
45 | /** |
| - | 46 | * 16-extended-word save area for %i[0-7] and %l[0-7] registers. |
|
| - | 47 | */ |
|
| - | 48 | #define SAVE_AREA (16*STACK_ITEM_SIZE) |
|
| - | 49 | #define SP_DELTA SAVE_AREA |
|
| - | 50 | ||
| - | 51 | /** |
|
| 44 | * One item is put onto the stack to support get_stack_base(). |
52 | * By convention, the actual top of the stack is %sp + BIAS. |
| 45 | */ |
53 | */ |
| 46 | #define SP_DELTA (0+STACK_ITEM_SIZE) |
54 | #define BIAS 2047 |
| 47 | 55 | ||
| 48 | #ifdef context_set |
56 | #ifdef context_set |
| 49 | #undef context_set |
57 | #undef context_set |
| 50 | #endif |
58 | #endif |
| 51 | 59 | ||
| 52 | #define context_set(c, _pc, stack, size) \ |
60 | #define context_set(c, _pc, stack, size) \ |
| 53 | (c)->pc = ((__address) _pc) - 8; \ |
61 | (c)->pc = ((__address) _pc) - 8; \ |
| 54 | (c)->sp = ((__address) stack) + (ALIGN((size), STACK_ALIGNMENT) + 1) - SP_DELTA; |
62 | (c)->sp = ((__address) stack) + ALIGN((size), STACK_ALIGNMENT) - (BIAS + SP_DELTA) |
| 55 | 63 | ||
| 56 | /* |
64 | /* |
| 57 | * Only save registers that must be preserved across |
65 | * Only save registers that must be preserved across |
| 58 | * function calls. |
66 | * function calls. |
| 59 | */ |
67 | */ |