| /* Target machine sub-parameters for SPARC, for GDB, the GNU debugger. |
| This is included by other tm-*.h files to define SPARC cpu-related info. |
| Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
| 1998, 1999, 2000, 2001, 2002, 2003 |
| Free Software Foundation, Inc. |
| Contributed by Michael Tiemann (tiemann@mcc.com) |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #include "regcache.h" |
| |
| struct type; |
| struct value; |
| struct frame_info; |
| |
| /* |
| * The following enums are purely for the convenience of the GDB |
| * developer, when debugging GDB. |
| */ |
| |
| enum { /* Sparc general registers, for all sparc versions. */ |
| G0_REGNUM, G1_REGNUM, G2_REGNUM, G3_REGNUM, |
| G4_REGNUM, G5_REGNUM, G6_REGNUM, G7_REGNUM, |
| O0_REGNUM, O1_REGNUM, O2_REGNUM, O3_REGNUM, |
| O4_REGNUM, O5_REGNUM, O6_REGNUM, O7_REGNUM, |
| L0_REGNUM, L1_REGNUM, L2_REGNUM, L3_REGNUM, |
| L4_REGNUM, L5_REGNUM, L6_REGNUM, L7_REGNUM, |
| I0_REGNUM, I1_REGNUM, I2_REGNUM, I3_REGNUM, |
| I4_REGNUM, I5_REGNUM, I6_REGNUM, I7_REGNUM, |
| FP0_REGNUM /* Floating point register 0 */ |
| }; |
| |
| enum { /* Sparc general registers, alternate names. */ |
| R0_REGNUM, R1_REGNUM, R2_REGNUM, R3_REGNUM, |
| R4_REGNUM, R5_REGNUM, R6_REGNUM, R7_REGNUM, |
| R8_REGNUM, R9_REGNUM, R10_REGNUM, R11_REGNUM, |
| R12_REGNUM, R13_REGNUM, R14_REGNUM, R15_REGNUM, |
| R16_REGNUM, R17_REGNUM, R18_REGNUM, R19_REGNUM, |
| R20_REGNUM, R21_REGNUM, R22_REGNUM, R23_REGNUM, |
| R24_REGNUM, R25_REGNUM, R26_REGNUM, R27_REGNUM, |
| R28_REGNUM, R29_REGNUM, R30_REGNUM, R31_REGNUM |
| }; |
| |
| enum { /* Sparc32 control registers. */ |
| PS_REGNUM = 65, /* PC, NPC, and Y are omitted because */ |
| WIM_REGNUM = 66, /* they have different values depending on */ |
| TBR_REGNUM = 67, /* 32-bit / 64-bit mode. */ |
| FPS_REGNUM = 70, |
| CPS_REGNUM = 71 |
| }; |
| |
| /* v9 misc. and priv. regs */ |
| |
| /* Note: specifying values explicitly for documentation purposes. */ |
| enum { /* Sparc64 control registers, excluding Y, PC, and NPC. */ |
| CCR_REGNUM = 82, /* Condition Code Register (%xcc,%icc) */ |
| FSR_REGNUM = 83, /* Floating Point State */ |
| FPRS_REGNUM = 84, /* Floating Point Registers State */ |
| ASI_REGNUM = 86, /* Alternate Space Identifier */ |
| VER_REGNUM = 87, /* Version register */ |
| TICK_REGNUM = 88, /* Tick register */ |
| PIL_REGNUM = 89, /* Processor Interrupt Level */ |
| PSTATE_REGNUM = 90, /* Processor State */ |
| TSTATE_REGNUM = 91, /* Trap State */ |
| TBA_REGNUM = 92, /* Trap Base Address */ |
| TL_REGNUM = 93, /* Trap Level */ |
| TT_REGNUM = 94, /* Trap Type */ |
| TPC_REGNUM = 95, /* Trap pc */ |
| TNPC_REGNUM = 96, /* Trap npc */ |
| WSTATE_REGNUM = 97, /* Window State */ |
| CWP_REGNUM = 98, /* Current Window Pointer */ |
| CANSAVE_REGNUM = 99, /* Savable Windows */ |
| CANRESTORE_REGNUM = 100, /* Restorable Windows */ |
| CLEANWIN_REGNUM = 101, /* Clean Windows */ |
| OTHERWIN_REGNUM = 102, /* Other Windows */ |
| ASR16_REGNUM = 103, /* Ancillary State Registers */ |
| ASR17_REGNUM = 104, |
| ASR18_REGNUM = 105, |
| ASR19_REGNUM = 106, |
| ASR20_REGNUM = 107, |
| ASR21_REGNUM = 108, |
| ASR22_REGNUM = 109, |
| ASR23_REGNUM = 110, |
| ASR24_REGNUM = 111, |
| ASR25_REGNUM = 112, |
| ASR26_REGNUM = 113, |
| ASR27_REGNUM = 114, |
| ASR28_REGNUM = 115, |
| ASR29_REGNUM = 116, |
| ASR30_REGNUM = 117, |
| ASR31_REGNUM = 118, |
| ICC_REGNUM = 119, /* 32 bit condition codes */ |
| XCC_REGNUM = 120, /* 64 bit condition codes */ |
| FCC0_REGNUM = 121, /* fp cc reg 0 */ |
| FCC1_REGNUM = 122, /* fp cc reg 1 */ |
| FCC2_REGNUM = 123, /* fp cc reg 2 */ |
| FCC3_REGNUM = 124 /* fp cc reg 3 */ |
| }; |
| |
| /* |
| * Make sparc target multi-archable: April 2000 |
| */ |
| |
| /* Multi-arch definition of TARGET_IS_SPARC64, TARGET_ELF64 */ |
| #undef GDB_TARGET_IS_SPARC64 |
| #define GDB_TARGET_IS_SPARC64 \ |
| (sparc_intreg_size () == 8) |
| #undef TARGET_ELF64 |
| #define TARGET_ELF64 \ |
| (sparc_intreg_size () == 8) |
| extern int sparc_intreg_size (void); |
| |
| /* |
| * The following defines should ONLY appear for MULTI_ARCH. |
| */ |
| |
| /* Multi-arch the nPC and Y registers. */ |
| #define Y_REGNUM (sparc_y_regnum ()) |
| |
| /* On the Sun 4 under SunOS, the compile will leave a fake insn which |
| encodes the structure size being returned. If we detect such |
| a fake insn, step past it. */ |
| |
| #define PC_ADJUST(PC) sparc_pc_adjust (PC) |
| extern CORE_ADDR sparc_pc_adjust (CORE_ADDR); |
| |
| /* If an argument is declared "register", Sun cc will keep it in a register, |
| never saving it onto the stack. So we better not believe the "p" symbol |
| descriptor stab. */ |
| |
| #define DEPRECATE_USE_REGISTER_NOT_ARG |
| |
| /* For acc, there's no need to correct LBRAC entries by guessing how |
| they should work. In fact, this is harmful because the LBRAC |
| entries now all appear at the end of the function, not intermixed |
| with the SLINE entries. n_opt_found detects acc for Solaris binaries; |
| function_stab_type detects acc for SunOS4 binaries. |
| |
| For binary from SunOS4 /bin/cc, need to correct LBRAC's. |
| |
| For gcc, like acc, don't correct. */ |
| |
| #define SUN_FIXED_LBRAC_BUG \ |
| (n_opt_found \ |
| || function_stab_type == N_STSYM \ |
| || function_stab_type == N_GSYM \ |
| || processing_gcc_compilation) |
| |
| /* Do variables in the debug stabs occur after the N_LBRAC or before it? |
| acc: after, gcc: before, SunOS4 /bin/cc: before. */ |
| |
| #define VARIABLES_INSIDE_BLOCK(desc, gcc_p) \ |
| (!(gcc_p) \ |
| && (n_opt_found \ |
| || function_stab_type == N_STSYM \ |
| || function_stab_type == N_GSYM)) |
| |
| /* Sequence of bytes for breakpoint instruction (ta 1). */ |
| |
| extern const unsigned char *sparc_breakpoint_from_pc (CORE_ADDR *pc, int *len); |
| #define BREAKPOINT_FROM_PC(PC,LEN) sparc_breakpoint_from_pc ((PC), (LEN)) |
| |
| /* Register numbers of various important registers. |
| Note that some of these values are "real" register numbers, |
| and correspond to the general registers of the machine, |
| and some are "phony" register numbers which are too large |
| to be actual register numbers as far as the user is concerned |
| but do serve to get the desired values when passed to read_register. */ |
| |
| #define G0_REGNUM 0 /* %g0 */ |
| #define G1_REGNUM 1 /* %g1 */ |
| #define O0_REGNUM 8 /* %o0 */ |
| #define RP_REGNUM 15 /* Contains return address value, *before* \ |
| any windows get switched. */ |
| #define O7_REGNUM 15 /* Last local reg not saved on stack frame */ |
| #define L0_REGNUM 16 /* First local reg that's saved on stack frame |
| rather than in machine registers */ |
| #define I0_REGNUM 24 /* %i0 */ |
| #define I7_REGNUM 31 /* Last local reg saved on stack frame */ |
| #define PS_REGNUM 65 /* Contains processor status */ |
| #define PS_FLAG_CARRY 0x100000 /* Carry bit in PS */ |
| #define WIM_REGNUM 66 /* Window Invalid Mask (not really supported) */ |
| #define TBR_REGNUM 67 /* Trap Base Register (not really supported) */ |
| #define FPS_REGNUM 70 /* Floating point status register */ |
| #define CPS_REGNUM 71 /* Coprocessor status register */ |
| |
| /* Writing to %g0 is a noop (not an error or exception or anything like |
| that, however). */ |
| |
| #define CANNOT_STORE_REGISTER(regno) ((regno) == G0_REGNUM) |
| |
| #define DEPRECATED_PRINT_EXTRA_FRAME_INFO(FI) \ |
| sparc_print_extra_frame_info (FI) |
| extern void sparc_print_extra_frame_info (struct frame_info *); |
| |
| /* DEPRECATED_INIT_EXTRA_FRAME_INFO needs the PC to detect flat |
| frames. */ |
| |
| #define DEPRECATED_INIT_FRAME_PC_FIRST(FROMLEAF, PREV) \ |
| ((FROMLEAF) ? DEPRECATED_SAVED_PC_AFTER_CALL ((PREV)->next) : \ |
| (PREV)->next ? DEPRECATED_FRAME_SAVED_PC ((PREV)->next) : read_pc ()) |
| |
| /* Define other aspects of the stack frame. */ |
| |
| /* The location of I0 w.r.t SP. This is actually dependent on how the |
| system's window overflow/underflow routines are written. Most |
| vendors save the L regs followed by the I regs (at the higher |
| address). Some vendors get it wrong. */ |
| |
| #define FRAME_SAVED_L0 0 |
| #define FRAME_SAVED_I0 (8 * DEPRECATED_REGISTER_RAW_SIZE (L0_REGNUM)) |
| |
| /* Things needed for making the inferior call functions. */ |
| /* |
| * First of all, let me give my opinion of what the DUMMY_FRAME |
| * actually looks like. |
| * |
| * | | |
| * | | |
| * + - - - - - - - - - - - - - - - - +<-- fp (level 0) |
| * | | |
| * | | |
| * | | |
| * | | |
| * | Frame of innermost program | |
| * | function | |
| * | | |
| * | | |
| * | | |
| * | | |
| * | | |
| * |---------------------------------|<-- sp (level 0), fp (c) |
| * | | |
| * DUMMY | fp0-31 | |
| * | | |
| * | ------ |<-- fp - 0x80 |
| * FRAME | g0-7 |<-- fp - 0xa0 |
| * | i0-7 |<-- fp - 0xc0 |
| * | other |<-- fp - 0xe0 |
| * | ? | |
| * | ? | |
| * |---------------------------------|<-- sp' = fp - 0x140 |
| * | | |
| * xcution start | | |
| * sp' + 0x94 -->| CALL_DUMMY (x code) | |
| * | | |
| * | | |
| * |---------------------------------|<-- sp'' = fp - 0x200 |
| * | align sp to 8 byte boundary | |
| * | ==> args to fn <== | |
| * Room for | | |
| * i & l's + agg | CALL_DUMMY_STACK_ADJUST = 0x0x44| |
| * |---------------------------------|<-- final sp (variable) |
| * | | |
| * | Where function called will | |
| * | build frame. | |
| * | | |
| * | | |
| * |
| * I understand everything in this picture except what the space |
| * between fp - 0xe0 and fp - 0x140 is used for. Oh, and I don't |
| * understand why there's a large chunk of CALL_DUMMY that never gets |
| * executed (its function is superceeded by |
| * DEPRECATED_PUSH_DUMMY_FRAME; they are designed to do the same |
| * thing). |
| * |
| * DEPRECATED_PUSH_DUMMY_FRAME saves the registers above sp' and |
| * pushes the * register file stack down one. |
| * |
| * call_function then writes CALL_DUMMY, pushes the args onto the |
| * stack, and adjusts the stack pointer. |
| |
| call_function_by_hand then starts execution (in the middle of |
| CALL_DUMMY, as directed by call_function). */ |
| |
| #ifndef CALL_DUMMY |
| /* This sequence of words is the instructions |
| |
| 00: bc 10 00 01 mov %g1, %fp |
| 04: 9d e3 80 00 save %sp, %g0, %sp |
| 08: bc 10 00 02 mov %g2, %fp |
| 0c: be 10 00 03 mov %g3, %i7 |
| 10: da 03 a0 58 ld [ %sp + 0x58 ], %o5 |
| 14: d8 03 a0 54 ld [ %sp + 0x54 ], %o4 |
| 18: d6 03 a0 50 ld [ %sp + 0x50 ], %o3 |
| 1c: d4 03 a0 4c ld [ %sp + 0x4c ], %o2 |
| 20: d2 03 a0 48 ld [ %sp + 0x48 ], %o1 |
| 24: 40 00 00 00 call <fun> |
| 28: d0 03 a0 44 ld [ %sp + 0x44 ], %o0 |
| 2c: 01 00 00 00 nop |
| 30: 91 d0 20 01 ta 1 |
| 34: 01 00 00 00 nop |
| |
| NOTES: |
| * the first four instructions are necessary only on the simulator. |
| * this is a multiple of 8 (not only 4) bytes. |
| * the `call' insn is a relative, not an absolute call. |
| * the `nop' at the end is needed to keep the trap from |
| clobbering things (if NPC pointed to garbage instead). |
| */ |
| |
| #endif /* CALL_DUMMY */ |
| |
| /* Sparc has no reliable single step ptrace call */ |
| |
| #define SOFTWARE_SINGLE_STEP_P() 1 |
| extern void sparc_software_single_step (enum target_signal, int); |
| #define SOFTWARE_SINGLE_STEP(sig,bp_p) sparc_software_single_step (sig,bp_p) |
| |
| /* We need more arguments in a frame specification for the |
| "frame" or "info frame" command. */ |
| |
| #define SETUP_ARBITRARY_FRAME(argc, argv) setup_arbitrary_frame (argc, argv) |
| extern struct frame_info *setup_arbitrary_frame (int, CORE_ADDR *); |
| |
| extern void sparc_do_registers_info (int regnum, int all); |
| #undef DEPRECATED_DO_REGISTERS_INFO |
| #define DEPRECATED_DO_REGISTERS_INFO(REGNUM,ALL) sparc_do_registers_info (REGNUM, ALL) |
| |
| /* Optimization for storing registers to the inferior. The hook |
| DO_DEFERRED_STORES |
| actually executes any deferred stores. It is called any time |
| we are going to proceed the child, or read its registers. |
| The hook CLEAR_DEFERRED_STORES is called when we want to throw |
| away the inferior process, e.g. when it dies or we kill it. |
| FIXME, this does not handle remote debugging cleanly. */ |
| |
| extern int deferred_stores; |
| #define DO_DEFERRED_STORES \ |
| if (deferred_stores) \ |
| target_store_registers (-2); |
| #define CLEAR_DEFERRED_STORES \ |
| deferred_stores = 0; |
| |
| /* Select the sparc disassembler */ |
| |
| #define TM_PRINT_INSN_MACH bfd_mach_sparc |
| |
| #define DEPRECATED_EXTRA_STACK_ALIGNMENT_NEEDED 1 |
