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| 1 /* |
| 2 * Copyright 2012 The Native Client Authors. All rights reserved. |
| 3 * Use of this source code is governed by a BSD-style license that can |
| 4 * be found in the LICENSE file. |
| 5 */ |
| 6 |
| 7 /* |
| 8 * NaCl Secure Runtime |
| 9 */ |
| 10 |
| 11 #ifndef __NATIVE_CLIENT_SERVICE_RUNTIME_ARCH_MIPS_SEL_RT_H__ |
| 12 #define __NATIVE_CLIENT_SERVICE_RUNTIME_ARCH_MIPS_SEL_RT_H__ 1 |
| 13 |
| 14 #if !defined(__ASSEMBLER__) |
| 15 |
| 16 #include <stddef.h> |
| 17 |
| 18 #include "native_client/src/include/nacl_macros.h" |
| 19 #include "native_client/src/include/portability.h" |
| 20 #include "native_client/src/shared/platform/nacl_check.h" |
| 21 |
| 22 uint32_t NaClGetStackPtr(void); |
| 23 uint32_t NaClGetGlobalPtr(void); |
| 24 |
| 25 typedef uint32_t nacl_reg_t; |
| 26 |
| 27 #define NACL_PRIdNACL_REG NACL_PRId32 |
| 28 #define NACL_PRIiNACL_REG NACL_PRIi32 |
| 29 #define NACL_PRIoNACL_REG NACL_PRIo32 |
| 30 #define NACL_PRIuNACL_REG NACL_PRIu32 |
| 31 #define NACL_PRIxNACL_REG NACL_PRIx32 |
| 32 #define NACL_PRIXNACL_REG NACL_PRIX32 |
| 33 |
| 34 /* |
| 35 * NOTE: This struct needs to be synchronized with NACL_CALLEE_SAVE_LIST |
| 36 */ |
| 37 |
| 38 struct NaClThreadContext { |
| 39 nacl_reg_t s0, s1, s2, s3, s4, s5, s6, s7, t8; |
| 40 /* 0 4 8 c 10 14 18 1c 20 */ |
| 41 |
| 42 nacl_reg_t global_ptr, stack_ptr, frame_ptr, prog_ctr; |
| 43 /* 24 28 2c 30 */ |
| 44 |
| 45 /* |
| 46 * sys_ret and new_prog_ctr are not a part of the thread's register set, |
| 47 * but are needed by NaClSwitch. By including them here, the two |
| 48 * use the same interface. |
| 49 */ |
| 50 uint32_t sysret; |
| 51 /* 34 */ |
| 52 uint32_t new_prog_ctr; |
| 53 /* 38 */ |
| 54 uint32_t trusted_stack_ptr; |
| 55 /* 3c */ |
| 56 uint32_t tls_idx; |
| 57 /* 40 */ |
| 58 }; |
| 59 |
| 60 #endif /* !defined(__ASSEMBLER__) */ |
| 61 |
| 62 #define NACL_THREAD_CONTEXT_OFFSET_S0 0x00 |
| 63 #define NACL_THREAD_CONTEXT_OFFSET_S1 0x04 |
| 64 #define NACL_THREAD_CONTEXT_OFFSET_S2 0x08 |
| 65 #define NACL_THREAD_CONTEXT_OFFSET_S3 0x0c |
| 66 #define NACL_THREAD_CONTEXT_OFFSET_S4 0x10 |
| 67 #define NACL_THREAD_CONTEXT_OFFSET_S5 0x14 |
| 68 #define NACL_THREAD_CONTEXT_OFFSET_S6 0x18 |
| 69 #define NACL_THREAD_CONTEXT_OFFSET_S7 0x1c |
| 70 #define NACL_THREAD_CONTEXT_OFFSET_T8 0x20 |
| 71 #define NACL_THREAD_CONTEXT_OFFSET_GLOBAL_PTR 0x24 |
| 72 #define NACL_THREAD_CONTEXT_OFFSET_STACK_PTR 0x28 |
| 73 #define NACL_THREAD_CONTEXT_OFFSET_FRAME_PTR 0x2c |
| 74 #define NACL_THREAD_CONTEXT_OFFSET_PROG_CTR 0x30 |
| 75 #define NACL_THREAD_CONTEXT_OFFSET_SYSRET 0x34 |
| 76 #define NACL_THREAD_CONTEXT_OFFSET_NEW_PROG_CTR 0x38 |
| 77 #define NACL_THREAD_CONTEXT_OFFSET_TRUSTED_STACK_PTR 0x3c |
| 78 #define NACL_THREAD_CONTEXT_OFFSET_TLS_IDX 0x40 |
| 79 |
| 80 #if !defined(__ASSEMBLER__) |
| 81 |
| 82 /* |
| 83 * This function exists as a function only because compile-time |
| 84 * assertions need to be inside a function. This function does not |
| 85 * need to be called for the assertions to be checked. |
| 86 */ |
| 87 static INLINE void NaClThreadContextOffsetCheck(void) { |
| 88 int offset = 0; |
| 89 |
| 90 #define NACL_CHECK_FIELD(offset_name, field) \ |
| 91 NACL_COMPILE_TIME_ASSERT(offset_name == \ |
| 92 offsetof(struct NaClThreadContext, field)); \ |
| 93 CHECK(offset == offset_name); \ |
| 94 offset += sizeof(((struct NaClThreadContext *) NULL)->field); |
| 95 |
| 96 NACL_CHECK_FIELD(NACL_THREAD_CONTEXT_OFFSET_S0, s0); |
| 97 NACL_CHECK_FIELD(NACL_THREAD_CONTEXT_OFFSET_S1, s1); |
| 98 NACL_CHECK_FIELD(NACL_THREAD_CONTEXT_OFFSET_S2, s2); |
| 99 NACL_CHECK_FIELD(NACL_THREAD_CONTEXT_OFFSET_S3, s3); |
| 100 NACL_CHECK_FIELD(NACL_THREAD_CONTEXT_OFFSET_S4, s4); |
| 101 NACL_CHECK_FIELD(NACL_THREAD_CONTEXT_OFFSET_S5, s5); |
| 102 NACL_CHECK_FIELD(NACL_THREAD_CONTEXT_OFFSET_S6, s6); |
| 103 NACL_CHECK_FIELD(NACL_THREAD_CONTEXT_OFFSET_S7, s7); |
| 104 NACL_CHECK_FIELD(NACL_THREAD_CONTEXT_OFFSET_T8, t8); |
| 105 NACL_CHECK_FIELD(NACL_THREAD_CONTEXT_OFFSET_GLOBAL_PTR, global_ptr); |
| 106 NACL_CHECK_FIELD(NACL_THREAD_CONTEXT_OFFSET_STACK_PTR, stack_ptr); |
| 107 NACL_CHECK_FIELD(NACL_THREAD_CONTEXT_OFFSET_FRAME_PTR, frame_ptr); |
| 108 NACL_CHECK_FIELD(NACL_THREAD_CONTEXT_OFFSET_PROG_CTR, prog_ctr); |
| 109 NACL_CHECK_FIELD(NACL_THREAD_CONTEXT_OFFSET_SYSRET, sysret); |
| 110 NACL_CHECK_FIELD(NACL_THREAD_CONTEXT_OFFSET_NEW_PROG_CTR, new_prog_ctr); |
| 111 NACL_CHECK_FIELD(NACL_THREAD_CONTEXT_OFFSET_TRUSTED_STACK_PTR, |
| 112 trusted_stack_ptr); |
| 113 NACL_CHECK_FIELD(NACL_THREAD_CONTEXT_OFFSET_TLS_IDX, tls_idx); |
| 114 CHECK(offset == sizeof(struct NaClThreadContext)); |
| 115 |
| 116 #undef NACL_CHECK_FIELD |
| 117 |
| 118 } |
| 119 |
| 120 #endif /* !defined(__ASSEMBLER__) */ |
| 121 |
| 122 #endif /* __NATIVE_CLIENT_SERVICE_RUNTIME_ARCH_MIPS_SEL_RT_H___ */ |
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