diff options
Diffstat (limited to 'gdb/param.h')
| -rw-r--r-- | gdb/param.h | 512 |
1 files changed, 264 insertions, 248 deletions
diff --git a/gdb/param.h b/gdb/param.h index 83ebf45..255cb56 100644 --- a/gdb/param.h +++ b/gdb/param.h @@ -1,5 +1,6 @@ -/* Parameters for execution on a Sun, for GDB, the GNU debugger. +/* 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 @@ -18,8 +19,8 @@ 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 sun3 -#define sun3 +#ifndef sun4 +#define sun4 #endif /* Get rid of any system-imposed stack limit if possible. */ @@ -43,21 +44,21 @@ anyone else from sharing it farther. Help stamp out software hoarding! /* Advance PC across any function entry prologue instructions to reach some "real" code. */ -#define SKIP_PROLOGUE(pc) \ -{ register int op = read_memory_integer (pc, 2); \ - if (op == 0047126) \ - pc += 4; /* Skip link #word */ \ - else if (op == 0044016) \ - pc += 6; /* Skip link #long */ \ -} +#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. */ -#define SAVED_PC_AFTER_CALL(frame) \ -read_memory_integer (read_register (SP_REGNUM), 4) +/* 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. */ @@ -67,19 +68,26 @@ read_memory_integer (read_register (SP_REGNUM), 4) #define INNER_THAN < +/* Stack has strict alignment. */ + +#define STACK_ALIGN(ADDR) (((ADDR)+7)&-8) + /* Sequence of bytes for breakpoint instruction. */ -#define BREAKPOINT {0x4e, 0x4f} +#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 2 +#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". -#define ABOUT_TO_RETURN(pc) (read_memory_integer (pc, 2) == 0x4e75) + 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. */ @@ -91,17 +99,23 @@ read_memory_integer (read_register (SP_REGNUM), 4) /* Number of machine registers */ -#define NUM_REGS 31 +#define NUM_REGS 72 /* Initializer for an array of names of registers. There should be NUM_REGS strings in this initializer. */ #define REGISTER_NAMES \ - {"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7", \ - "a0", "a1", "a2", "a3", "a4", "a5", "fp", "sp", \ - "ps", "pc", \ - "fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7", \ - "fpcontrol", "fpstatus", "fpiaddr", "fpcode", "fpflags" } +{ "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, @@ -110,40 +124,45 @@ read_memory_integer (read_register (SP_REGNUM), 4) 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 14 /* Contains address of executing stack frame */ -#define SP_REGNUM 15 /* Contains address of top of stack */ -#define PS_REGNUM 16 /* Contains processor status */ -#define PC_REGNUM 17 /* Contains program counter */ -#define FP0_REGNUM 18 /* Floating point register 0 */ -#define FPC_REGNUM 26 /* 68881 control 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 (16*4+8*12+8+20) +#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) >= FPC_REGNUM ? (((N) - FPC_REGNUM) * 4) + 168 \ - : (N) >= FP0_REGNUM ? (((N) - FP0_REGNUM) * 12) + 72 \ - : (N) * 4) +/* ?? */ +#define REGISTER_BYTE(N) ((N)*4) /* Number of bytes of storage in the actual machine representation - for register N. On the 68000, all regs are 4 bytes - except the floating point regs which are 12 bytes. */ + for register N. */ + +/* On the SPARC, all regs are 4 bytes. */ -#define REGISTER_RAW_SIZE(N) (((unsigned)(N) - FP0_REGNUM) < 8 ? 12 : 4) +#define REGISTER_RAW_SIZE(N) (4) /* Number of bytes of storage in the program's representation - for register N. On the 68000, all regs are 4 bytes - except the floating point regs which are 8-byte doubles. */ + for register N. */ -#define REGISTER_VIRTUAL_SIZE(N) (((unsigned)(N) - FP0_REGNUM) < 8 ? 8 : 4) +/* 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 12 +#define MAX_REGISTER_RAW_SIZE 8 /* Largest value REGISTER_VIRTUAL_SIZE can have. */ @@ -152,50 +171,44 @@ read_memory_integer (read_register (SP_REGNUM), 4) /* Nonzero if register N requires conversion from raw format to virtual format. */ -#define REGISTER_CONVERTIBLE(N) (((unsigned)(N) - FP0_REGNUM) < 8) +#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) \ -{ if ((REGNUM) >= FP0_REGNUM && (REGNUM) < FPC_REGNUM) \ - convert_from_68881 ((FROM), (TO)); \ - else \ - bcopy ((FROM), (TO), 4); } +#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) \ -{ if ((REGNUM) >= FP0_REGNUM && (REGNUM) < FPC_REGNUM) \ - convert_to_68881 ((FROM), (TO)); \ - else \ - bcopy ((FROM), (TO), 4); } +{ bcopy ((FROM), (TO), 4); } /* Return the GDB type object for the "standard" data type of data in register N. */ #define REGISTER_VIRTUAL_TYPE(N) \ - (((unsigned)(N) - FP0_REGNUM) < 8 ? builtin_type_double : builtin_type_int) + ((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 (REGBUF, VALBUF, TYPE_LENGTH (TYPE)) + 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 (0, VALBUF, TYPE_LENGTH (TYPE)) + 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) (*(int *)(REGBUF)) +#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. */ @@ -213,9 +226,17 @@ read_memory_integer (read_register (SP_REGNUM), 4) 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. @@ -227,22 +248,30 @@ read_memory_integer (read_register (SP_REGNUM), 4) 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, the frame's nominal address - is the address of a 4-byte word containing the calling frame's address. */ +/* 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) (read_memory_integer (thisframe, 4)) +#define FRAME_CHAIN(thisframe) \ + GET_RWINDOW_REG (thisframe, rw_in[6]) #define FRAME_CHAIN_VALID(chain, thisframe) \ - (chain != 0 && (FRAME_SAVED_PC (thisframe) >= first_object_file_end)) + (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) (read_memory_integer (frame + 4, 4)) +#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. @@ -252,226 +281,213 @@ read_memory_integer (read_register (SP_REGNUM), 4) now that the C compiler delays popping them. */ #define FRAME_NUM_ARGS(val,fi) (val = -1) -#if 0 -#define FRAME_NUM_ARGS(val, fi) \ -{ register CORE_ADDR pc = FRAME_SAVED_PC (fi.frame); \ - register int insn = 0177777 & read_memory_integer (pc, 2); \ - val = 0; \ - if (insn == 0047757 || insn == 0157374) /* lea W(sp),sp or addaw #W,sp */ \ - val = read_memory_integer (pc + 2, 2); \ - else if ((insn & 0170777) == 0050217 /* addql #N, sp */ \ - || (insn & 0170777) == 0050117) /* addqw */ \ - { val = (insn >> 9) & 7; if (val == 0) val = 8; } \ - else if (insn == 0157774) /* addal #WW, sp */ \ - val = read_memory_integer (pc + 2, 4); \ - val >>= 2; } -#endif - /* Return number of bytes at start of arglist that are not really args. */ -#define FRAME_ARGS_SKIP 8 +#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. */ + the address we return for it IS the sp for the next frame. -#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \ + 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 int regmask; \ - register CORE_ADDR next_addr; \ register CORE_ADDR pc; \ - int nextinsn; \ + FRAME frame = (fi).frame; \ + FRAME next_frame = (fi).next_frame; \ bzero (&frame_saved_regs, sizeof frame_saved_regs); \ - if ((frame_info).pc >= (frame_info).frame - CALL_DUMMY_LENGTH - FP_REGNUM*4 - 8*12 - 4 \ - && (frame_info).pc <= (frame_info).frame) \ - { next_addr = (frame_info).frame; \ - pc = (frame_info).frame - CALL_DUMMY_LENGTH - FP_REGNUM * 4 - 8*12 - 4; }\ - else \ - { pc = get_pc_function_start ((frame_info).pc); \ - /* Verify we have a link a6 instruction next; \ - if not we lose. If we win, find the address above the saved \ - regs using the amount of storage from the link instruction. */\ - if (044016 == read_memory_integer (pc, 2)) \ - next_addr = (frame_info).frame + read_memory_integer (pc += 2, 4), pc+=4; \ - else if (047126 == read_memory_integer (pc, 2)) \ - next_addr = (frame_info).frame + read_memory_integer (pc += 2, 2), pc+=2; \ - else goto lose; \ - /* If have an addal #-n, sp next, adjust next_addr. */ \ - if ((0177777 & read_memory_integer (pc, 2)) == 0157774) \ - next_addr += read_memory_integer (pc += 2, 4), pc += 4; \ + 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; \ } \ - /* next should be a moveml to (sp) or -(sp) or a movl r,-(sp) */ \ - regmask = read_memory_integer (pc + 2, 2); \ - /* But before that can come an fmovem. Check for it. */ \ - nextinsn = 0xffff & read_memory_integer (pc, 2); \ - if (0xf227 == nextinsn \ - && (regmask & 0xff00) == 0xe000) \ - { pc += 4; /* Regmask's low bit is for register fp7, the first pushed */ \ - for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--, regmask >>= 1) \ - if (regmask & 1) \ - (frame_saved_regs).regs[regnum] = (next_addr -= 12); \ - regmask = read_memory_integer (pc + 2, 2); } \ - if (0044327 == read_memory_integer (pc, 2)) \ - { pc += 4; /* Regmask's low bit is for register 0, the first written */ \ - for (regnum = 0; regnum < 16; regnum++, regmask >>= 1) \ - if (regmask & 1) \ - (frame_saved_regs).regs[regnum] = (next_addr += 4) - 4; } \ - else if (0044347 == read_memory_integer (pc, 2)) \ - { pc += 4; /* Regmask's low bit is for register 15, the first pushed */ \ - for (regnum = 15; regnum >= 0; regnum--, regmask >>= 1) \ - if (regmask & 1) \ - (frame_saved_regs).regs[regnum] = (next_addr -= 4); } \ - else if (0x2f00 == 0xfff0 & read_memory_integer (pc, 2)) \ - { regnum = 0xf & read_memory_integer (pc, 2); pc += 2; \ - (frame_saved_regs).regs[regnum] = (next_addr -= 4); } \ - /* fmovemx to index of sp may follow. */ \ - regmask = read_memory_integer (pc + 2, 2); \ - nextinsn = 0xffff & read_memory_integer (pc, 2); \ - if (0xf236 == nextinsn \ - && (regmask & 0xff00) == 0xf000) \ - { pc += 10; /* Regmask's low bit is for register fp0, the first written */ \ - for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--, regmask >>= 1) \ - if (regmask & 1) \ - (frame_saved_regs).regs[regnum] = (next_addr += 12) - 12; \ - regmask = read_memory_integer (pc + 2, 2); } \ - /* clrw -(sp); movw ccr,-(sp) may follow. */ \ - if (0x426742e7 == read_memory_integer (pc, 4)) \ - (frame_saved_regs).regs[PS_REGNUM] = (next_addr -= 4); \ - lose: ; \ - (frame_saved_regs).regs[SP_REGNUM] = (frame_info).frame + 8; \ - (frame_saved_regs).regs[FP_REGNUM] = (frame_info).frame; \ - (frame_saved_regs).regs[PC_REGNUM] = (frame_info).frame + 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 \ -{ register CORE_ADDR sp = read_register (SP_REGNUM); \ +{ extern char registers[]; \ register int regnum; \ - char raw_buffer[12]; \ - sp = push_word (sp, read_register (PC_REGNUM)); \ - sp = push_word (sp, read_register (FP_REGNUM)); \ - write_register (FP_REGNUM, sp); \ - for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--) \ - { read_register_bytes (REGISTER_BYTE (regnum), raw_buffer, 12); \ - sp = push_bytes (sp, raw_buffer, 12); } \ - for (regnum = FP_REGNUM - 1; regnum >= 0; regnum--) \ - sp = push_word (sp, read_register (regnum)); \ - sp = push_word (sp, read_register (PS_REGNUM)); \ - write_register (SP_REGNUM, sp); } + 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[12]; \ - fi = get_frame_info (fp); \ - get_frame_saved_regs (&fi, &fsr); \ - for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--) \ - if (fsr.regs[regnum]) \ - { read_memory (fsr.regs[regnum], raw_buffer, 12); \ - write_register_bytes (REGISTER_BYTE (regnum), raw_buffer, 12); }\ - for (regnum = FP_REGNUM - 1; regnum >= 0; regnum--) \ - if (fsr.regs[regnum]) \ - write_register (regnum, read_memory_integer (fsr.regs[regnum], 4)); \ - if (fsr.regs[PS_REGNUM]) \ - write_register (PS_REGNUM, read_memory_integer (fsr.regs[PS_REGNUM], 4)); \ - write_register (FP_REGNUM, read_memory_integer (fp, 4)); \ - write_register (PC_REGNUM, read_memory_integer (fp + 4, 4)); \ - write_register (SP_REGNUM, fp + 8); \ - set_current_frame (read_register (FP_REGNUM)); } +{ 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 - fmovem 0xff,-(sp) - moveml 0xfffc,-(sp) - clrw -(sp) - movew ccr,-(sp) + + 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 jsr instruction. *../ - jsr @#32323232 - addl #69696969,sp - trap #15 - nop -Note this is 28 bytes. -We actually start executing at the jsr, since the pushing of the -registers is done by PUSH_DUMMY_FRAME. If this were real code, -the arguments for the function called by the jsr would be pushed -between the moveml and the jsr, 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 the moveml to push the registers again lest they be -taken for the arguments. */ - -#define CALL_DUMMY {0xf227e0ff, 0x48e7fffc, 0x426742e7, 0x4eb93232, 0x3232dffc, 0x69696969, 0x4e4f4e71} - -#define CALL_DUMMY_LENGTH 28 - -#define CALL_DUMMY_START_OFFSET 12 + 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, fun, nargs) \ -{ *(int *)((char *) dummyname + 20) = nargs * 4; \ - *(int *)((char *) dummyname + 14) = fun; } +#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); \ +} -/* Interface definitions for kernel debugger KDB. */ - -/* Map machine fault codes into signal numbers. - First subtract 0, divide by 4, then index in a table. - Faults for which the entry in this table is 0 - are not handled by KDB; the program's own trap handler - gets to handle then. */ - -#define FAULT_CODE_ORIGIN 0 -#define FAULT_CODE_UNITS 4 -#define FAULT_TABLE \ -{ 0, 0, 0, 0, SIGTRAP, 0, 0, 0, \ - 0, SIGTRAP, 0, 0, 0, 0, 0, SIGKILL, \ - 0, 0, 0, 0, 0, 0, 0, 0, \ - SIGILL } - -/* Start running with a stack stretching from BEG to END. - BEG and END should be symbols meaningful to the assembler. - This is used only for kdb. */ - -#define INIT_STACK(beg, end) \ -{ asm (".globl end"); \ - asm ("movel #end, sp"); \ - asm ("movel #0,a6"); } - -/* Push the frame pointer register on the stack. */ -#define PUSH_FRAME_PTR \ - asm ("movel a6,sp@-"); - -/* Copy the top-of-stack to the frame pointer register. */ -#define POP_FRAME_PTR \ - asm ("movl sp@,a6"); - -/* After KDB is entered by a fault, push all registers - that GDB thinks about (all NUM_REGS of them), - so that they appear in order of ascending GDB register number. - The fault code will be on the stack beyond the last register. */ - -#define PUSH_REGISTERS \ -{ asm ("clrw -(sp)"); \ - asm ("pea sp@(10)"); \ - asm ("movem #0xfffe,sp@-"); } - -/* Assuming the registers (including processor status) have been - pushed on the stack in order of ascending GDB register number, - restore them and return to the address in the saved PC register. */ - -#define POP_REGISTERS \ -{ asm ("subil #8,sp@(28)"); \ - asm ("movem sp@,#0xffff"); \ - asm ("rte"); } +/* Sparc has no reliable single step ptrace call */ + +#define NO_SINGLE_STEP 1 + +/* KDB stuff flushed for now. */ |