projects / thirdparty / binutils-gdb.git / blame
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1 | /* Definitions to target GDB to Linux on 386. |
| 2 | Copyright 1992, 1993 Free Software Foundation, Inc. | |
| 3 | ||
| 4 | This file is part of GDB. | |
| 5 | ||
| 6 | This program is free software; you can redistribute it and/or modify | |
| 7 | it under the terms of the GNU General Public License as published by | |
| 8 | the Free Software Foundation; either version 2 of the License, or | |
| 9 | (at your option) any later version. | |
| 10 | ||
| 11 | This program is distributed in the hope that it will be useful, | |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | GNU General Public License for more details. | |
| 15 | ||
| 16 | You should have received a copy of the GNU General Public License | |
| 17 | along with this program; if not, write to the Free Software | |
| 18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
| 19 | ||
| 20 | #ifndef TM_LINUX_H | |
| 21 | #define TM_LINUX_H | |
| 22 | ||
| 23 | #include "powerpc/tm-ppc-eabi.h" | |
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24 | /* Avoid warning from redefinition in tm-sysv4.h (included from tm-linux.h) */ |
| 25 | #undef SKIP_TRAMPOLINE_CODE | |
| 26 | #include "tm-linux.h" | |
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27 | |
| 28 | /* We can single step on linux */ | |
| 29 | #undef SOFTWARE_SINGLE_STEP | |
| 30 | #define SOFTWARE_SINGLE_STEP(p,q) abort() /* Will never execute! */ | |
| 31 | #undef SOFTWARE_SINGLE_STEP_P | |
| 32 | #define SOFTWARE_SINGLE_STEP_P 0 | |
| 33 | ||
| 34 | /* Make sure nexti gets the help it needs for debugging assembly code | |
| 35 | without symbols */ | |
| 36 | ||
| 37 | #define AT_SUBROUTINE_CALL_INSTRUCTION_TARGET(prevpc,stoppc) \ | |
| 38 | at_subroutine_call_instruction_target(prevpc,stoppc) | |
| 39 | extern int at_subroutine_call_instruction_target(); | |
| 40 | ||
| 41 | /* We _want_ the SVR4 section offset calculations (see syms_from_objfile() | |
| 42 | in symfile.c) */ | |
| 43 | #undef IBM6000_TARGET | |
| 44 | ||
| 45 | /* Offset to saved PC in sigcontext, from <linux/signal.h>. */ | |
| 46 | #define SIGCONTEXT_PC_OFFSET 184 | |
| 47 | ||
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48 | extern CORE_ADDR ppc_linux_skip_trampoline_code (CORE_ADDR pc); |
| 49 | #undef SKIP_TRAMPOLINE_CODE | |
| 50 | #define SKIP_TRAMPOLINE_CODE(pc) ppc_linux_skip_trampoline_code (pc) | |
| 51 | ||
| 52 | extern int ppc_linux_in_sigtramp (CORE_ADDR pc, char *func_name); | |
| 53 | #undef IN_SIGTRAMP | |
| 54 | #define IN_SIGTRAMP(pc,func_name) ppc_linux_in_sigtramp (pc,func_name) | |
| 55 | ||
| 56 | extern unsigned long ppc_linux_frame_saved_pc (struct frame_info *); | |
| 57 | #undef FRAME_SAVED_PC | |
| 58 | #define FRAME_SAVED_PC(FRAME) ppc_linux_frame_saved_pc (FRAME) | |
| 59 | ||
| 60 | extern void ppc_linux_init_extra_frame_info (int fromleaf, struct frame_info *); | |
| 61 | #undef INIT_EXTRA_FRAME_INFO | |
| 62 | #define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \ | |
| 63 | ppc_linux_init_extra_frame_info (fromleaf, fi) | |
| 64 | ||
| 65 | extern int ppc_linux_frameless_function_invocation (struct frame_info *); | |
| 66 | #undef FRAMELESS_FUNCTION_INVOCATION | |
| 67 | #define FRAMELESS_FUNCTION_INVOCATION(FI) \ | |
| 68 | (ppc_linux_frameless_function_invocation (FI)) | |
| 69 | ||
| 70 | extern void ppc_linux_frame_init_saved_regs (struct frame_info *); | |
| 71 | #undef FRAME_INIT_SAVED_REGS | |
| 72 | #define FRAME_INIT_SAVED_REGS(FI) ppc_linux_frame_init_saved_regs (FI) | |
| 73 | ||
| 74 | CORE_ADDR ppc_linux_frame_chain (struct frame_info *); | |
| 75 | #undef FRAME_CHAIN | |
| 76 | #define FRAME_CHAIN(thisframe) ppc_linux_frame_chain (thisframe) | |
| 77 | ||
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78 | CORE_ADDR ppc_sysv_abi_push_arguments (int, struct value **, CORE_ADDR, int, |
| 79 | CORE_ADDR); | |
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80 | #undef PUSH_ARGUMENTS |
| 81 | #define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \ | |
| 82 | (ppc_sysv_abi_push_arguments((nargs), (args), (sp), (struct_return), (struct_addr))) | |
| 83 | ||
| 84 | #define CANNOT_FETCH_REGISTER(regno) ((regno) >= MQ_REGNUM) | |
| 85 | #define CANNOT_STORE_REGISTER(regno) ((regno) >= MQ_REGNUM) | |
| 86 | ||
| 87 | /* Linux doesn't use the PowerOpen ABI for function pointer representation */ | |
| 88 | #undef CONVERT_FROM_FUNC_PTR_ADDR | |
| 89 | ||
| 90 | #if 0 /* If skip_prologue() isn't too greedy, we don't need this */ | |
| 91 | /* There is some problem with the debugging symbols generated by the | |
| 92 | compiler such that the debugging symbol for the first line of a | |
| 93 | function overlap with the function prologue. */ | |
| 94 | #define PROLOGUE_FIRSTLINE_OVERLAP | |
| 95 | #endif | |
| 96 | ||
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97 | /* Needed to handled the self-modifying code situation due to the dynamic |
| 98 | linker. */ | |
| 99 | int ppc_linux_memory_remove_breakpoint (CORE_ADDR addr, char *contents_cache); | |
| 100 | #undef MEMORY_REMOVE_BREAKPOINT | |
| 101 | #define MEMORY_REMOVE_BREAKPOINT(addr, contents_cache) \ | |
| 102 | ppc_linux_memory_remove_breakpoint(addr, contents_cache) | |
| 103 | ||
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104 | /* N_FUN symbols in shared libaries have 0 for their values and need |
| 105 | to be relocated. */ | |
| 106 | #define SOFUN_ADDRESS_MAYBE_MISSING | |
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107 | |
| 108 | #endif /* #ifndef TM_LINUX_H */ |