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Diffstat (limited to 'gdb/param.h')
| l---------[-rw-r--r--] | gdb/param.h | 494 |
1 files changed, 1 insertions, 493 deletions
diff --git a/gdb/param.h b/gdb/param.h index 255cb56..4b050eb 100644..120000 --- a/gdb/param.h +++ b/gdb/param.h @@ -1,493 +1 @@ -/* Parameters for execution on a Sun 4, for GDB, the GNU debugger. - Copyright (C) 1986, 1987 Free Software Foundation, Inc. - Contributed by Michael Tiemann (tiemann@mcc.com) - -GDB is distributed in the hope that it will be useful, but WITHOUT ANY -WARRANTY. No author or distributor accepts responsibility to anyone -for the consequences of using it or for whether it serves any -particular purpose or works at all, unless he says so in writing. -Refer to the GDB General Public License for full details. - -Everyone is granted permission to copy, modify and redistribute GDB, -but only under the conditions described in the GDB General Public -License. A copy of this license is supposed to have been given to you -along with GDB so you can know your rights and responsibilities. It -should be in a file named COPYING. Among other things, the copyright -notice and this notice must be preserved on all copies. - -In other words, go ahead and share GDB, but don't try to stop -anyone else from sharing it farther. Help stamp out software hoarding! -*/ - -#ifndef sun4 -#define sun4 -#endif - -/* Get rid of any system-imposed stack limit if possible. */ - -#define SET_STACK_LIMIT_HUGE - -/* Define this if the C compiler puts an underscore at the front - of external names before giving them to the linker. */ - -#define NAMES_HAVE_UNDERSCORE - -/* Debugger information will be in DBX format. */ - -#define READ_DBX_FORMAT - -/* Offset from address of function to start of its code. - Zero on most machines. */ - -#define FUNCTION_START_OFFSET 0 - -/* Advance PC across any function entry prologue instructions - to reach some "real" code. */ - -#define SKIP_PROLOGUE(pc) \ - { pc = skip_prologue (pc); } - -/* Immediately after a function call, return the saved pc. - Can't go through the frames for this because on some machines - the new frame is not set up until the new function executes - some instructions. */ - -/* 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) ((read_memory_integer (pc + 8, 4) & 0xfffffe00) == 0 ? pc+12 : pc+8) - -#define SAVED_PC_AFTER_CALL(frame) PC_ADJUST (read_register (RP_REGNUM)) - -/* Address of end of stack space. */ - -#define STACK_END_ADDR 0xf000000 - -/* Stack grows downward. */ - -#define INNER_THAN < - -/* Stack has strict alignment. */ - -#define STACK_ALIGN(ADDR) (((ADDR)+7)&-8) - -/* Sequence of bytes for breakpoint instruction. */ - -#define BREAKPOINT {0x91, 0xd0, 0x20, 0x01} - -/* Amount PC must be decremented by after a breakpoint. - This is often the number of bytes in BREAKPOINT - but not always. */ - -#define DECR_PC_AFTER_BREAK 0 - -/* Nonzero if instruction at PC is a return instruction. */ -/* For SPARC, this is either a "jmpl %o7+8,%g0" or "jmpl %i7+8,%g0". - - Note: this does not work for functions returning structures under SunOS. */ -#define ABOUT_TO_RETURN(pc) \ - ((read_memory_integer (pc, 4)|0x00040000) == 0x81c7e008) - -/* Return 1 if P points to an invalid floating point value. */ - -#define INVALID_FLOAT(p, len) 0 /* Just a first guess; not checked */ - -/* Say how long (ordinary) registers are. */ - -#define REGISTER_TYPE long - -/* Number of machine registers */ - -#define NUM_REGS 72 - -/* Initializer for an array of names of registers. - There should be NUM_REGS strings in this initializer. */ - -#define REGISTER_NAMES \ -{ "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7", \ - "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7", \ - "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7", \ - "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7", \ - \ - "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \ - "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \ - "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", \ - "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", \ - \ - "y", "psr", "wim", "tbr", "pc", "npc", "fpsr", "cpsr" }; - -/* 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 FP_REGNUM 30 /* Contains address of executing stack frame */ -#define RP_REGNUM 15 /* Contains return address value, *before* \ - any windows get switched. */ -#define SP_REGNUM 14 /* Contains address of top of stack, \ - which is also the bottom of the frame. */ -#define Y_REGNUM 64 /* Temp register for multiplication, etc. */ -#define PS_REGNUM 65 /* Contains processor status */ -#define PC_REGNUM 68 /* Contains program counter */ -#define NPC_REGNUM 69 /* Contains next PC */ -#define FP0_REGNUM 32 /* Floating point register 0 */ -#define FPS_REGNUM 70 /* Floating point status register */ -#define CPS_REGNUM 71 /* Coprocessor status register */ - -/* Total amount of space needed to store our copies of the machine's - register state, the array `registers'. */ -#define REGISTER_BYTES (32*4+32*4+8*4) - -/* Index within `registers' of the first byte of the space for - register N. */ -/* ?? */ -#define REGISTER_BYTE(N) ((N)*4) - -/* Number of bytes of storage in the actual machine representation - for register N. */ - -/* On the SPARC, all regs are 4 bytes. */ - -#define REGISTER_RAW_SIZE(N) (4) - -/* Number of bytes of storage in the program's representation - for register N. */ - -/* On the SPARC, all regs are 4 bytes. */ - -#define REGISTER_VIRTUAL_SIZE(N) (4) - -/* Largest value REGISTER_RAW_SIZE can have. */ - -#define MAX_REGISTER_RAW_SIZE 8 - -/* Largest value REGISTER_VIRTUAL_SIZE can have. */ - -#define MAX_REGISTER_VIRTUAL_SIZE 8 - -/* Nonzero if register N requires conversion - from raw format to virtual format. */ - -#define REGISTER_CONVERTIBLE(N) (0) - -/* Convert data from raw format for register REGNUM - to virtual format for register REGNUM. */ - -#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO) \ -{ bcopy ((FROM), (TO), 4); } - -/* Convert data from virtual format for register REGNUM - to raw format for register REGNUM. */ - -#define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO) \ -{ bcopy ((FROM), (TO), 4); } - -/* Return the GDB type object for the "standard" data type - of data in register N. */ - -#define REGISTER_VIRTUAL_TYPE(N) \ - ((N) < 32 ? builtin_type_int : (N) < 64 ? builtin_type_float : builtin_type_int) - -/* Extract from an array REGBUF containing the (raw) register state - a function return value of type TYPE, and copy that, in virtual format, - into VALBUF. */ - -#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ - bcopy ((int *)REGBUF+8, VALBUF, TYPE_LENGTH (TYPE)) - -/* Write into appropriate registers a function return value - of type TYPE, given in virtual format. */ -/* On sparc, values are returned in register %o0. */ -#define STORE_RETURN_VALUE(TYPE,VALBUF) \ - write_register_bytes (REGISTER_BYTE (8), VALBUF, TYPE_LENGTH (TYPE)) - -/* Extract from an array REGBUF containing the (raw) register state - the address in which a function should return its structure value, - as a CORE_ADDR (or an expression that can be used as one). */ - -#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (read_memory_integer (((int *)(REGBUF))[SP_REGNUM]+(16*4), 4)) - -/* Enable use of alternate code to read and write registers. */ - -#define NEW_SUN_PTRACE - -/* Enable use of alternate code for Sun's format of core dump file. */ - -#define NEW_SUN_CORE - -/* Do implement the attach and detach commands. */ - -#define ATTACH_DETACH - -/* It is safe to look for symsegs on a Sun, because Sun's ld - does not screw up with random garbage at end of file. */ - -#define READ_GDB_SYMSEGS - -/* The SPARC processor has register windows. */ - -#define HAVE_REGISTER_WINDOWS - -/* Describe the pointer in each stack frame to the previous stack frame - (its caller). */ -#include <machine/reg.h> - -#define GET_RWINDOW_REG(FRAME, REG) \ - (read_memory_integer (&((struct rwindow *)FRAME)->REG, 4)) - -/* FRAME_CHAIN takes a frame's nominal address - and produces the frame's chain-pointer. - - FRAME_CHAIN_COMBINE takes the chain pointer and the frame's nominal address - and produces the nominal address of the caller frame. - - However, if FRAME_CHAIN_VALID returns zero, - it means the given frame is the outermost one and has no caller. - In that case, FRAME_CHAIN_COMBINE is not used. */ - -/* In the case of the Sun 4, the frame-chain's nominal address - is held in the frame pointer register. - - On the Sun4, the frame (in %fp) is %sp for the previous frame. - From the previous frame's %sp, we can find the previous frame's - %fp: it is in the save area just above the previous frame's %sp. */ - -#define FRAME_CHAIN(thisframe) \ - GET_RWINDOW_REG (thisframe, rw_in[6]) - -#define FRAME_CHAIN_VALID(chain, thisframe) \ - (chain != 0 && (FRAME_SAVED_PC (thisframe, 0) >= first_object_file_end)) - -#define FRAME_CHAIN_COMBINE(chain, thisframe) (chain) - -/* Define other aspects of the stack frame. */ - -#define FRAME_SAVED_PC(frame, next_frame) frame_saved_pc (frame, next_frame) - -/* If the argument is on the stack, it will be here. */ -#define FRAME_ARGS_ADDRESS(fi) (fi.frame) - -#define FRAME_STRUCT_ARGS_ADDRESS(fi) (fi.frame) - -#define FRAME_LOCALS_ADDRESS(fi) (fi.frame) - -/* Set VAL to the number of args passed to frame described by FI. - Can set VAL to -1, meaning no way to tell. */ - -/* We can't tell how many args there are - now that the C compiler delays popping them. */ -#define FRAME_NUM_ARGS(val,fi) (val = -1) - -/* Return number of bytes at start of arglist that are not really args. */ - -#define FRAME_ARGS_SKIP 68 - -/* Put here the code to store, into a struct frame_saved_regs, - the addresses of the saved registers of frame described by FRAME_INFO. - This includes special registers such as pc and fp saved in special - ways in the stack frame. sp is even more special: - the address we return for it IS the sp for the next frame. - - On the Sun 4, the only time all registers are saved is when - a dummy frame is involved. Otherwise, the only saved registers - are the LOCAL and IN registers which are saved as a result - of the "save/restore" opcodes. This condition is determined - by address rather than by value. */ - -#define FRAME_FIND_SAVED_REGS(fi, frame_saved_regs) \ -{ register int regnum; \ - register CORE_ADDR pc; \ - FRAME frame = (fi).frame; \ - FRAME next_frame = (fi).next_frame; \ - bzero (&frame_saved_regs, sizeof frame_saved_regs); \ - if ((fi).pc >= frame - CALL_DUMMY_LENGTH - 0x140 \ - && (fi).pc <= frame) \ - { \ - for (regnum = 0; regnum < 32; regnum++) \ - (frame_saved_regs).regs[regnum+FP0_REGNUM] = frame + regnum * 4 - 0x80;\ - for (regnum = 1; regnum < 8; regnum++) \ - (frame_saved_regs).regs[regnum] = frame + regnum * 4 - 0xa0; \ - for (regnum = 0; regnum < 8; regnum++) \ - (frame_saved_regs).regs[regnum+24] = frame + regnum * 4 - 0xc0; \ - for (regnum = 0; regnum < 8; regnum++) \ - (frame_saved_regs).regs[regnum+64] = frame + regnum * 4 - 0xe0; \ - frame = (fi).next_frame ? \ - (fi).next_frame : read_register (SP_REGNUM); \ - } \ - else \ - { \ - for (regnum = 0; regnum < 16; regnum++) \ - (frame_saved_regs).regs[regnum+16] = frame + regnum * 4; \ - } \ - if (next_frame == 0) next_frame = read_register (SP_REGNUM); \ - for (regnum = 0; regnum < 8; regnum++) \ - (frame_saved_regs).regs[regnum+8] = next_frame + regnum * 4; \ - (frame_saved_regs).regs[FP_REGNUM] = frame + 14*4; \ - (frame_saved_regs).regs[SP_REGNUM] = frame; \ - (frame_saved_regs).regs[PC_REGNUM] = frame + 15*4; \ -} - -/* Things needed for making the inferior call functions. */ - -/* Push an empty stack frame, to record the current PC, etc. */ - -/* NOTE: to be perfectly correct, we will probably have to restore the - IN registers (which were the OUT registers of the calling frame). */ - -#define PUSH_DUMMY_FRAME \ -{ extern char registers[]; \ - register int regnum; \ - CORE_ADDR fp = read_register (FP_REGNUM); \ - CORE_ADDR pc = read_register (PC_REGNUM); \ - void do_save_insn (); \ - supply_register (RP_REGNUM, &pc); \ - do_save_insn (0x140); \ - fp = read_register (FP_REGNUM); \ - write_memory (fp - 0x80, ®isters[REGISTER_BYTE (FP0_REGNUM)], 32 * 4); \ - write_memory (fp - 0xa0, ®isters[REGISTER_BYTE (0)], 8 * 4); \ - write_memory (fp - 0xc0, ®isters[REGISTER_BYTE (24)], 8 * 4); \ - write_memory (fp - 0xe0, ®isters[REGISTER_BYTE (64)], 8 * 4); \ -} - -/* Discard from the stack the innermost frame, - restoring all saved registers. */ - -#define POP_FRAME \ -{ register CORE_ADDR fp = read_register (FP_REGNUM); \ - register int regnum; \ - struct frame_saved_regs fsr; \ - struct frame_info fi; \ - char raw_buffer_fp[REGISTER_BYTES]; \ - char raw_buffer_globals[REGISTER_BYTES]; \ - char raw_buffer_outs[REGISTER_BYTES]; \ - char raw_buffer_xx[REGISTER_BYTES]; \ - void do_restore_insn (); \ - fi = get_frame_info (fp); \ - get_frame_saved_regs (&fi, &fsr); \ - if (fsr.regs[FP0_REGNUM]) \ - read_memory (fsr.regs[FP0_REGNUM], raw_buffer_fp, 32 * 4); \ - if (fsr.regs[1]) \ - read_memory (fsr.regs[1], raw_buffer_globals, 7 * 4); \ - if (fsr.regs[24]) \ - read_memory (fsr.regs[24], raw_buffer_outs, 8 * 4); \ - if (fsr.regs[64]) \ - read_memory (fsr.regs[64], raw_buffer_xx, 8 * 4); \ - do_restore_insn (fsr.regs); \ - if (fsr.regs[FP0_REGNUM]) \ - write_register_bytes (REGISTER_BYTE (FP0_REGNUM), raw_buffer_fp, 32 * 4); \ - if (fsr.regs[1]) \ - write_register_bytes (REGISTER_BYTE (1), raw_buffer_globals, 7 * 4);\ - if (fsr.regs[24]) \ - write_register_bytes (REGISTER_BYTE (8), raw_buffer_outs, 8 * 4); \ - if (fsr.regs[64]) \ - write_register_bytes (REGISTER_BYTE (64), raw_buffer_xx, 8 * 4); \ - set_current_frame (read_register (FP_REGNUM)); \ -} - -/* This sequence of words is the instructions - - save %sp,-0x140,%sp - std %f30,[%fp-0x08] - std %f28,[%fp-0x10] - std %f26,[%fp-0x18] - std %f24,[%fp-0x20] - std %f22,[%fp-0x28] - std %f20,[%fp-0x30] - std %f18,[%fp-0x38] - std %f16,[%fp-0x40] - std %f14,[%fp-0x48] - std %f12,[%fp-0x50] - std %f10,[%fp-0x58] - std %f8,[%fp-0x60] - std %f6,[%fp-0x68] - std %f4,[%fp-0x70] - std %f2,[%fp-0x78] - std %f0,[%fp-0x80] - std %g6,[%fp-0x88] - std %g4,[%fp-0x90] - std %g2,[%fp-0x98] - std %g0,[%fp-0xa0] - std %i6,[%fp-0xa8] - std %i4,[%fp-0xb0] - std %i2,[%fp-0xb8] - std %i0,[%fp-0xc0] - nop ! stcsr [%fp-0xc4] - nop ! stfsr [%fp-0xc8] - nop ! wr %npc,[%fp-0xcc] - nop ! wr %pc,[%fp-0xd0] - rd %tbr,%o0 - st %o0,[%fp-0xd4] - rd %wim,%o1 - st %o0,[%fp-0xd8] - rd %psr,%o0 - st %o0,[%fp-0xdc] - rd %y,%o0 - st %o0,[%fp-0xe0] - - /..* The arguments are pushed at this point by GDB; - no code is needed in the dummy for this. - The CALL_DUMMY_START_OFFSET gives the position of - the following call instruction. *../ - - ld [%sp+0x58],%o5 - ld [%sp+0x44],%o4 - ld [%sp+0x50],%o3 - ld [%sp+0x4c],%o2 - ld [%sp+0x48],%o1 - call 0x34343434 - ld [%sp+0x44],%o0 - nop - ta 1 - nop - - note that this is 192 bytes, which is a multiple of 8 (not only 4) bytes. - note that the `call' insn is a relative, not an absolute call. - note that the `nop' at the end is needed to keep the trap from - clobbering things (if NPC pointed to garbage instead). - -We actually start executing at the `sethi', since the pushing of the -registers (as arguments) is done by PUSH_DUMMY_FRAME. If this were -real code, the arguments for the function called by the CALL would be -pushed between the list of ST insns and the CALL, and we could allow -it to execute through. But the arguments have to be pushed by GDB -after the PUSH_DUMMY_FRAME is done, and we cannot allow these ST -insns to be performed again, lest the registers saved be taken for -arguments. */ - -#define CALL_DUMMY { 0x9de3bee0, 0xfd3fbff8, 0xf93fbff0, 0xf53fbfe8, \ - 0xf13fbfe0, 0xed3fbfd8, 0xe93fbfd0, 0xe53fbfc8, \ - 0xe13fbfc0, 0xdd3fbfb8, 0xd93fbfb0, 0xd53fbfa8, \ - 0xd13fbfa0, 0xcd3fbf98, 0xc93fbf90, 0xc53fbf88, \ - 0xc13fbf80, 0xcc3fbf78, 0xc83fbf70, 0xc43fbf68, \ - 0xc03fbf60, 0xfc3fbf58, 0xf83fbf50, 0xf43fbf48, \ - 0xf03fbf40, 0x01000000, 0x01000000, 0x01000000, \ - 0x01000000, 0x91580000, 0xd027bf50, 0x93500000, \ - 0xd027bf4c, 0x91480000, 0xd027bf48, 0x91400000, \ - 0xd027bf44, 0xda03a058, 0xd803a044, 0xd603a050, \ - 0xd403a04c, 0xd203a048, 0x40000000, 0xd003a044, \ - 0x01000000, 0x91d02001, 0x01000000, 0x01000000} - -#define CALL_DUMMY_LENGTH 192 - -#define CALL_DUMMY_START_OFFSET 148 - -#define CALL_DUMMY_STACK_ADJUST 68 - -/* Insert the specified number of args and function address - into a call sequence of the above form stored at DUMMYNAME. */ - -#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, type) \ -{ \ - *(int *)((char *) dummyname+168) = (0x40000000|((fun-(pc+168))>>2)); \ - if (TYPE_CODE (type) == TYPE_CODE_STRUCT || TYPE_CODE (type) == TYPE_CODE_UNION) \ - *(int *)((char *) dummyname+176) = (TYPE_LENGTH (type) & 0x1fff); \ -} - -/* Sparc has no reliable single step ptrace call */ - -#define NO_SINGLE_STEP 1 - -/* KDB stuff flushed for now. */ +m-sparc.h
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