projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| dc129d82 JT |
1 | /* Common target dependent code for GDB on Alpha systems. |
| 2 | Copyright 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2002 Free | |
| 3 | Software Foundation, Inc. | |
| 4 | ||
| 5 | This file is part of GDB. | |
| 6 | ||
| 7 | This program is free software; you can redistribute it and/or modify | |
| 8 | it under the terms of the GNU General Public License as published by | |
| 9 | the Free Software Foundation; either version 2 of the License, or | |
| 10 | (at your option) any later version. | |
| 11 | ||
| 12 | This program is distributed in the hope that it will be useful, | |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 | GNU General Public License for more details. | |
| 16 | ||
| 17 | You should have received a copy of the GNU General Public License | |
| 18 | along with this program; if not, write to the Free Software | |
| 19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
| 20 | Boston, MA 02111-1307, USA. */ | |
| 21 | ||
| 22 | #ifndef ALPHA_TDEP_H | |
| 23 | #define ALPHA_TDEP_H | |
| 24 | ||
| 25 | /* Say how long (ordinary) registers are. This is a piece of bogosity | |
| 26 | used in push_word and a few other places; REGISTER_RAW_SIZE is the | |
| 27 | real way to know how big a register is. */ | |
| 28 | #define ALPHA_REGISTER_SIZE 8 | |
| 29 | ||
| 30 | /* Number of machine registers. */ | |
| 31 | #define ALPHA_NUM_REGS 66 | |
| 32 | ||
| 33 | /* Total amount of space needed to store our copies of the machine's | |
| 34 | register state. */ | |
| 35 | #define ALPHA_REGISTER_BYTES (ALPHA_NUM_REGS * 8) | |
| 36 | ||
| 37 | /* Largest value REGISTER_RAW_SIZE can have. */ | |
| 38 | #define ALPHA_MAX_REGISTER_RAW_SIZE 8 | |
| 39 | ||
| 40 | /* Largest value REGISTER_VIRTUAL_SIZE can have. */ | |
| 41 | #define ALPHA_MAX_REGISTER_VIRTUAL_SIZE 8 | |
| 42 | ||
| 43 | /* Register numbers of various important registers. | |
| 44 | Note that most of these values are "real" register numbers, | |
| 45 | and correspond to the general registers of the machine, | |
| 46 | and FP_REGNUM is a "phony" register number which is too large | |
| 47 | to be an actual register number as far as the user is concerned | |
| 48 | but serves to get the desired value when passed to read_register. */ | |
| 49 | ||
| 50 | #define ALPHA_V0_REGNUM 0 /* Function integer return value */ | |
| 51 | #define ALPHA_T7_REGNUM 8 /* Return address register for OSF/1 __add* */ | |
| 52 | #define ALPHA_GCC_FP_REGNUM 15 /* Used by gcc as frame register */ | |
| 53 | #define ALPHA_A0_REGNUM 16 /* Loc of first arg during a subr call */ | |
| 54 | #define ALPHA_T9_REGNUM 23 /* Return address register for OSF/1 __div* */ | |
| 55 | #define ALPHA_T12_REGNUM 27 /* Contains start addr of current proc */ | |
| 56 | #define ALPHA_SP_REGNUM 30 /* Contains address of top of stack */ | |
| 57 | #define ALPHA_RA_REGNUM 26 /* Contains return address value */ | |
| 58 | #define ALPHA_ZERO_REGNUM 31 /* Read-only register, always 0 */ | |
| 59 | #define ALPHA_FP0_REGNUM 32 /* Floating point register 0 */ | |
| 60 | #define ALPHA_FPA0_REGNUM 48 /* First float arg during a subr call */ | |
| 61 | #define ALPHA_FPCR_REGNUM 63 /* Floating point control register */ | |
| 62 | #define ALPHA_PC_REGNUM 64 /* Contains program counter */ | |
| 63 | #define ALPHA_FP_REGNUM 65 /* Virtual frame pointer */ | |
| 64 | ||
| 65 | /* The alpha has two different virtual pointers for arguments and locals. | |
| 66 | ||
| 67 | The virtual argument pointer is pointing to the bottom of the argument | |
| 68 | transfer area, which is located immediately below the virtual frame | |
| 69 | pointer. Its size is fixed for the native compiler, it is either zero | |
| 70 | (for the no arguments case) or large enough to hold all argument registers. | |
| 71 | gcc uses a variable sized argument transfer area. As it has | |
| 72 | to stay compatible with the native debugging tools it has to use the same | |
| 73 | virtual argument pointer and adjust the argument offsets accordingly. | |
| 74 | ||
| 75 | The virtual local pointer is localoff bytes below the virtual frame | |
| 76 | pointer, the value of localoff is obtained from the PDR. */ | |
| 77 | #define ALPHA_NUM_ARG_REGS 6 | |
| 78 | ||
| 79 | /* ABI variants that we know about. If you add to this enum, please | |
| 80 | update the table of names in alpha-tdep.c. */ | |
| 81 | enum alpha_abi | |
| 82 | { | |
| 83 | ALPHA_ABI_UNKNOWN = 0, | |
| 84 | ALPHA_ABI_OSF1, | |
| 85 | ALPHA_ABI_LINUX, | |
| 86 | ALPHA_ABI_FREEBSD, | |
| 87 | ALPHA_ABI_NETBSD, | |
| 88 | ||
| 89 | ALPHA_ABI_INVALID /* Keep this last. */ | |
| 90 | }; | |
| 91 | ||
| 92 | /* Target-dependent structure in gdbarch. */ | |
| 93 | struct gdbarch_tdep | |
| 94 | { | |
| 95 | enum alpha_abi alpha_abi; /* OS/ABI of inferior. */ | |
| 96 | const char *abi_name; /* Name of the above. */ | |
| 97 | }; | |
| 98 | ||
| 99 | #endif /* ALPHA_TDEP_H */ |