diff options
Diffstat (limited to 'include/asm-xtensa/elf.h')
-rw-r--r-- | include/asm-xtensa/elf.h | 92 |
1 files changed, 4 insertions, 88 deletions
diff --git a/include/asm-xtensa/elf.h b/include/asm-xtensa/elf.h index 467384542502..0444507b438d 100644 --- a/include/asm-xtensa/elf.h +++ b/include/asm-xtensa/elf.h | |||
@@ -72,109 +72,25 @@ | |||
72 | 72 | ||
73 | /* ELF register definitions. This is needed for core dump support. */ | 73 | /* ELF register definitions. This is needed for core dump support. */ |
74 | 74 | ||
75 | /* | ||
76 | * elf_gregset_t contains the application-level state in the following order: | ||
77 | * Processor info: config_version, cpuxy | ||
78 | * Processor state: pc, ps, exccause, excvaddr, wb, ws, | ||
79 | * lbeg, lend, lcount, sar | ||
80 | * GP regs: ar0 - arXX | ||
81 | */ | ||
82 | |||
83 | typedef unsigned long elf_greg_t; | 75 | typedef unsigned long elf_greg_t; |
84 | 76 | ||
85 | typedef struct { | 77 | typedef struct { |
86 | elf_greg_t xchal_config_id0; | ||
87 | elf_greg_t xchal_config_id1; | ||
88 | elf_greg_t cpux; | ||
89 | elf_greg_t cpuy; | ||
90 | elf_greg_t pc; | 78 | elf_greg_t pc; |
91 | elf_greg_t ps; | 79 | elf_greg_t ps; |
92 | elf_greg_t exccause; | ||
93 | elf_greg_t excvaddr; | ||
94 | elf_greg_t windowbase; | ||
95 | elf_greg_t windowstart; | ||
96 | elf_greg_t lbeg; | 80 | elf_greg_t lbeg; |
97 | elf_greg_t lend; | 81 | elf_greg_t lend; |
98 | elf_greg_t lcount; | 82 | elf_greg_t lcount; |
99 | elf_greg_t sar; | 83 | elf_greg_t sar; |
100 | elf_greg_t syscall; | 84 | elf_greg_t windowstart; |
101 | elf_greg_t ar[64]; | 85 | elf_greg_t reserved[9+48]; |
86 | elf_greg_t a[64]; | ||
102 | } xtensa_gregset_t; | 87 | } xtensa_gregset_t; |
103 | 88 | ||
104 | #define ELF_NGREG (sizeof(xtensa_gregset_t) / sizeof(elf_greg_t)) | 89 | #define ELF_NGREG (sizeof(xtensa_gregset_t) / sizeof(elf_greg_t)) |
105 | 90 | ||
106 | typedef elf_greg_t elf_gregset_t[ELF_NGREG]; | 91 | typedef elf_greg_t elf_gregset_t[ELF_NGREG]; |
107 | 92 | ||
108 | /* | 93 | #define ELF_NFPREG 18 |
109 | * Compute the size of the coprocessor and extra state layout (register info) | ||
110 | * table (in bytes). | ||
111 | * This is actually the maximum size of the table, as opposed to the size, | ||
112 | * which is available from the _xtensa_reginfo_table_size global variable. | ||
113 | * | ||
114 | * (See also arch/xtensa/kernel/coprocessor.S) | ||
115 | * | ||
116 | */ | ||
117 | |||
118 | #ifndef XCHAL_EXTRA_SA_CONTENTS_LIBDB_NUM | ||
119 | # define XTENSA_CPE_LTABLE_SIZE 0 | ||
120 | #else | ||
121 | # define XTENSA_CPE_SEGMENT(num) (num ? (1+num) : 0) | ||
122 | # define XTENSA_CPE_LTABLE_ENTRIES \ | ||
123 | ( XTENSA_CPE_SEGMENT(XCHAL_EXTRA_SA_CONTENTS_LIBDB_NUM) \ | ||
124 | + XTENSA_CPE_SEGMENT(XCHAL_CP0_SA_CONTENTS_LIBDB_NUM) \ | ||
125 | + XTENSA_CPE_SEGMENT(XCHAL_CP1_SA_CONTENTS_LIBDB_NUM) \ | ||
126 | + XTENSA_CPE_SEGMENT(XCHAL_CP2_SA_CONTENTS_LIBDB_NUM) \ | ||
127 | + XTENSA_CPE_SEGMENT(XCHAL_CP3_SA_CONTENTS_LIBDB_NUM) \ | ||
128 | + XTENSA_CPE_SEGMENT(XCHAL_CP4_SA_CONTENTS_LIBDB_NUM) \ | ||
129 | + XTENSA_CPE_SEGMENT(XCHAL_CP5_SA_CONTENTS_LIBDB_NUM) \ | ||
130 | + XTENSA_CPE_SEGMENT(XCHAL_CP6_SA_CONTENTS_LIBDB_NUM) \ | ||
131 | + XTENSA_CPE_SEGMENT(XCHAL_CP7_SA_CONTENTS_LIBDB_NUM) \ | ||
132 | + 1 /* final entry */ \ | ||
133 | ) | ||
134 | # define XTENSA_CPE_LTABLE_SIZE (XTENSA_CPE_LTABLE_ENTRIES * 8) | ||
135 | #endif | ||
136 | |||
137 | |||
138 | /* | ||
139 | * Instantiations of the elf_fpregset_t type contain, in most | ||
140 | * architectures, the floating point (FPU) register set. | ||
141 | * For Xtensa, this type is extended to contain all custom state, | ||
142 | * ie. coprocessor and "extra" (non-coprocessor) state (including, | ||
143 | * for example, TIE-defined states and register files; as well | ||
144 | * as other optional processor state). | ||
145 | * This includes FPU state if a floating-point coprocessor happens | ||
146 | * to have been configured within the Xtensa processor. | ||
147 | * | ||
148 | * TOTAL_FPREGS_SIZE is the required size (without rounding) | ||
149 | * of elf_fpregset_t. It provides space for the following: | ||
150 | * | ||
151 | * a) 32-bit mask of active coprocessors for this task (similar | ||
152 | * to CPENABLE in single-threaded Xtensa processor systems) | ||
153 | * | ||
154 | * b) table describing the layout of custom states (ie. of | ||
155 | * individual registers, etc) within the save areas | ||
156 | * | ||
157 | * c) save areas for each coprocessor and for non-coprocessor | ||
158 | * ("extra") state | ||
159 | * | ||
160 | * Note that save areas may require up to 16-byte alignment when | ||
161 | * accessed by save/restore sequences. We do not need to ensure | ||
162 | * such alignment in an elf_fpregset_t structure because custom | ||
163 | * state is not directly loaded/stored into it; rather, save area | ||
164 | * contents are copied to elf_fpregset_t from the active save areas | ||
165 | * (see 'struct task_struct' definition in processor.h for that) | ||
166 | * using memcpy(). But we do allow space for such alignment, | ||
167 | * to allow optimizations of layout and copying. | ||
168 | */ | ||
169 | #if 0 | ||
170 | #define TOTAL_FPREGS_SIZE \ | ||
171 | (4 + XTENSA_CPE_LTABLE_SIZE + XTENSA_CP_EXTRA_SIZE) | ||
172 | #define ELF_NFPREG \ | ||
173 | ((TOTAL_FPREGS_SIZE + sizeof(elf_fpreg_t) - 1) / sizeof(elf_fpreg_t)) | ||
174 | #else | ||
175 | #define TOTAL_FPREGS_SIZE 0 | ||
176 | #define ELF_NFPREG 0 | ||
177 | #endif | ||
178 | 94 | ||
179 | typedef unsigned int elf_fpreg_t; | 95 | typedef unsigned int elf_fpreg_t; |
180 | typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; | 96 | typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; |