From 52e4073c5f4ac5d83f82bd36f49d5405b547e8fd Mon Sep 17 00:00:00 2001 From: Mark Alexander Date: Fri, 24 Jul 1998 14:48:41 +0000 Subject: * mn10300-tdep.c (set_movm_offsets): New helper function for mn10300_analyze_prologue. (mn10300_analyze_prologue): Simplify by factoring out common code. Fix bugs in setting frame address for optimized code. Use read_memory_nobpt instead of target_read_memory. --- gdb/ChangeLog | 8 + gdb/mn10300-tdep.c | 613 +++++++++++++++++++++++++++++++++++++++-------------- 2 files changed, 464 insertions(+), 157 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index b614fd3..8a5e7c6 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,11 @@ +Fri Jul 24 07:41:12 1998 Mark Alexander + + * mn10300-tdep.c (set_movm_offsets): New helper function + for mn10300_analyze_prologue. + (mn10300_analyze_prologue): Simplify by factoring out common code. + Fix bugs in setting frame address for optimized code. + Use read_memory_nobpt instead of target_read_memory. + Thu Jul 23 17:01:17 1998 Michael Snyder * tracepoint.c (collect_symbol): handle LOC_ARG case. diff --git a/gdb/mn10300-tdep.c b/gdb/mn10300-tdep.c index 616abb7..6826713 100644 --- a/gdb/mn10300-tdep.c +++ b/gdb/mn10300-tdep.c @@ -28,153 +28,406 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "gdbcore.h" #include "symfile.h" -/* Info gleaned from scanning a function's prologue. */ +char *mn10300_generic_register_names[] = REGISTER_NAMES; -struct pifsr /* Info about one saved reg */ -{ - int framereg; /* Frame reg (SP or FP) */ - int offset; /* Offset from framereg */ - int reg; /* Saved register number */ -}; +/* start-sanitize-am33 */ +char *am33_register_names [] = +{ "d0", "d1", "d2", "d3", "a0", "a1", "a2", "a3", + "sp", "pc", "mdr", "psw", "lir", "lar", "", + "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", + "ssp", "msp", "usp", "mcrh", "mcrl", "mcvf", "", "", ""}; +/* end-sanitize-am33 */ + + +/* Set offsets of registers saved by movm instruction. + This is a helper function for mn10300_analyze_prologue. */ -struct prologue_info +static void +set_movm_offsets (fi, found_movm) + struct frame_info *fi; + int found_movm; { - int framereg; - int frameoffset; - int start_function; - struct pifsr *pifsrs; -}; + if (fi == NULL || found_movm == 0) + return; + fi->fsr.regs[7] = fi->frame; + fi->fsr.regs[6] = fi->frame + 4; + fi->fsr.regs[3] = fi->frame + 8; + fi->fsr.regs[2] = fi->frame + 12; + /* start-sanitize-am33 */ + fi->fsr.regs[E0_REGNUM+5] = fi->frame + 16; + fi->fsr.regs[E0_REGNUM+4] = fi->frame + 20; + fi->fsr.regs[E0_REGNUM+3] = fi->frame + 24; + fi->fsr.regs[E0_REGNUM+2] = fi->frame + 28; + /* end-sanitize-am33 */ +} -/* Function: frame_chain - Figure out and return the caller's frame pointer given current - frame_info struct. - We start out knowing the current pc, current sp, current fp. - We want to determine the caller's fp and caller's pc. To do this - correctly, we have to be able to handle the case where we are in the - middle of the prologue which involves scanning the prologue. +/* The main purpose of this file is dealing with prologues to extract + information about stack frames and saved registers. - We don't handle dummy frames yet but we would probably just return the - stack pointer that was in use at the time the function call was made? -*/ + For reference here's how prologues look on the mn10300: -CORE_ADDR -mn10300_frame_chain (fi) - struct frame_info *fi; + With frame pointer: + movm [d2,d3,a2,a3],sp + mov sp,a3 + add ,sp + + Without frame pointer: + movm [d2,d3,a2,a3],sp (if needed) + add ,sp + + One day we might keep the stack pointer constant, that won't + change the code for prologues, but it will make the frame + pointerless case much more common. */ + +/* Analyze the prologue to determine where registers are saved, + the end of the prologue, etc etc. Return the end of the prologue + scanned. + + We store into FI (if non-null) several tidbits of information: + + * stack_size -- size of this stack frame. Note that if we stop in + certain parts of the prologue/epilogue we may claim the size of the + current frame is zero. This happens when the current frame has + not been allocated yet or has already been deallocated. + + * fsr -- Addresses of registers saved in the stack by this frame. + + * status -- A (relatively) generic status indicator. It's a bitmask + with the following bits: + + MY_FRAME_IN_SP: The base of the current frame is actually in + the stack pointer. This can happen for frame pointerless + functions, or cases where we're stopped in the prologue/epilogue + itself. For these cases mn10300_analyze_prologue will need up + update fi->frame before returning or analyzing the register + save instructions. + + MY_FRAME_IN_FP: The base of the current frame is in the + frame pointer register ($a2). + + NO_MORE_FRAMES: Set this if the current frame is "start" or + if the first instruction looks like mov ,sp. This tells + frame chain to not bother trying to unwind past this frame. */ + +#define MY_FRAME_IN_SP 0x1 +#define MY_FRAME_IN_FP 0x2 +#define NO_MORE_FRAMES 0x4 + +static CORE_ADDR +mn10300_analyze_prologue (fi, pc) + struct frame_info *fi; + CORE_ADDR pc; { - struct prologue_info pi; - CORE_ADDR callers_pc, callers_fp, curr_sp; - CORE_ADDR past_prologue_addr; - int past_prologue = 1; /* default to being past prologue */ - int n_movm_args = 4; + CORE_ADDR func_addr, func_end, addr, stop; + CORE_ADDR stack_size; + int imm_size; + unsigned char buf[4]; + int status, found_movm = 0; + char *name; + + /* Use the PC in the frame if it's provided to look up the + start of this function. */ + pc = (fi ? fi->pc : pc); + + /* Find the start of this function. */ + status = find_pc_partial_function (pc, &name, &func_addr, &func_end); + + /* Do nothing if we couldn't find the start of this function or if we're + stopped at the first instruction in the prologue. */ + if (status == 0) + return pc; + + /* If we're in start, then give up. */ + if (strcmp (name, "start") == 0) + { + fi->status = NO_MORE_FRAMES; + return pc; + } + + /* At the start of a function our frame is in the stack pointer. */ + if (fi) + fi->status = MY_FRAME_IN_SP; - struct pifsr *pifsr, *pifsr_tmp; + /* Get the next two bytes into buf, we need two because rets is a two + byte insn and the first isn't enough to uniquely identify it. */ + status = read_memory_nobpt (pc, buf, 2); + if (status != 0) + return pc; - /* current pc is fi->pc */ - /* current fp is fi->frame */ + /* If we're physically on an "rets" instruction, then our frame has + already been deallocated. Note this can also be true for retf + and ret if they specify a size of zero. - /* current sp is: */ - curr_sp = read_register (SP_REGNUM); + In this case fi->frame is bogus, we need to fix it. */ + if (fi && buf[0] == 0xf0 && buf[1] == 0xfc) + { + if (fi->next == NULL) + fi->frame = read_sp (); + return fi->pc; + } + + /* Similarly if we're stopped on the first insn of a prologue as our + frame hasn't been allocated yet. */ + if (fi && fi->pc == func_addr) + { + if (fi->next == NULL) + fi->frame = read_sp (); + return fi->pc; + } -/* - printf("curr pc = 0x%x ; curr fp = 0x%x ; curr sp = 0x%x\n", - fi->pc, fi->frame, curr_sp); -*/ + /* Figure out where to stop scanning. */ + stop = fi ? fi->pc : func_end; - /* first inst after prologue is: */ - past_prologue_addr = mn10300_skip_prologue (fi->pc); + /* Don't walk off the end of the function. */ + stop = stop > func_end ? func_end : stop; - /* Are we in the prologue? */ - /* Yes if mn10300_skip_prologue returns an address after the - current pc in which case we have to scan prologue */ - if (fi->pc < mn10300_skip_prologue (fi->pc)) - past_prologue = 0; + /* Start scanning on the first instruction of this function. */ + addr = func_addr; - /* scan prologue if we're not past it */ - if (!past_prologue) + /* Suck in two bytes. */ + status = read_memory_nobpt (addr, buf, 2); + if (status != 0) { - /* printf("scanning prologue\n"); */ - /* FIXME -- fill out this case later */ - return 0x0; /* bogus value */ + if (fi && fi->next == NULL && fi->status & MY_FRAME_IN_SP) + fi->frame = read_sp (); + return addr; } - if (past_prologue) /* if we don't need to scan the prologue */ + /* First see if this insn sets the stack pointer; if so, it's something + we won't understand, so quit now. */ + if (buf[0] == 0xf2 && (buf[1] & 0xf3) == 0xf0) { -/* printf("we're past the prologue\n"); */ - callers_pc = fi->frame - REGISTER_SIZE; - callers_fp = fi->frame - ((n_movm_args + 1) * REGISTER_SIZE); -/* - printf("callers_pc = 0x%x ; callers_fp = 0x%x\n", - callers_pc, callers_fp); - - printf("*callers_pc = 0x%x ; *callers_fp = 0x%x\n", - read_memory_integer(callers_pc, REGISTER_SIZE), - read_memory_integer(callers_fp, REGISTER_SIZE)); -*/ - return read_memory_integer(callers_fp, REGISTER_SIZE); + if (fi) + fi->status = NO_MORE_FRAMES; + return addr; + } + + /* Now look for movm [regs],sp, which saves the callee saved registers. + + At this time we don't know if fi->frame is valid, so we only note + that we encountered a movm instruction. Later, we'll set the entries + in fsr.regs as needed. */ + if (buf[0] == 0xcf) + { + found_movm = 1; + addr += 2; + + /* Quit now if we're beyond the stop point. */ + if (addr >= stop) + { + /* Fix fi->frame since it's bogus at this point. */ + if (fi && fi->next == NULL) + fi->frame = read_sp (); + + /* Note if/where callee saved registers were saved. */ + set_movm_offsets (fi, found_movm); + return addr; + } + + /* Get the next two bytes so the prologue scan can continue. */ + status = read_memory_nobpt (addr, buf, 2); + if (status != 0) + { + /* Fix fi->frame since it's bogus at this point. */ + if (fi && fi->next == NULL) + fi->frame = read_sp (); + + /* Note if/where callee saved registers were saved. */ + set_movm_offsets (fi, found_movm); + return addr; + } + } + + /* Now see if we set up a frame pointer via "mov sp,a3" */ + if (buf[0] == 0x3f) + { + addr += 1; + + /* The frame pointer is now valid. */ + if (fi) + { + fi->status |= MY_FRAME_IN_FP; + fi->status &= ~MY_FRAME_IN_SP; + } + + /* Quit now if we're beyond the stop point. */ + if (addr >= stop) + { + /* Note if/where callee saved registers were saved. */ + set_movm_offsets (fi, found_movm); + return addr; + } + + /* Get two more bytes so scanning can continue. */ + status = read_memory_nobpt (addr, buf, 2); + if (status != 0) + { + /* Note if/where callee saved registers were saved. */ + set_movm_offsets (fi, found_movm); + return addr; + } + } + + /* Next we should allocate the local frame. No more prologue insns + are found after allocating the local frame. + + Search for add imm8,sp (0xf8feXX) + or add imm16,sp (0xfafeXXXX) + or add imm32,sp (0xfcfeXXXXXXXX). + + If none of the above was found, then this prologue has no + additional stack. */ + + status = read_memory_nobpt (addr, buf, 2); + if (status != 0) + { + /* Fix fi->frame if it's bogus at this point. */ + if (fi && fi->next == NULL && (fi->status & MY_FRAME_IN_SP)) + fi->frame = read_sp (); + + /* Note if/where callee saved registers were saved. */ + set_movm_offsets (fi, found_movm); + return addr; + } + + imm_size = 0; + if (buf[0] == 0xf8 && buf[1] == 0xfe) + imm_size = 1; + else if (buf[0] == 0xfa && buf[1] == 0xfe) + imm_size = 2; + else if (buf[0] == 0xfc && buf[1] == 0xfe) + imm_size = 4; + + if (imm_size != 0) + { + /* Suck in imm_size more bytes, they'll hold the size of the + current frame. */ + status = read_memory_nobpt (addr + 2, buf, imm_size); + if (status != 0) + { + /* Fix fi->frame if it's bogus at this point. */ + if (fi && fi->next == NULL && (fi->status & MY_FRAME_IN_SP)) + fi->frame = read_sp (); + + /* Note if/where callee saved registers were saved. */ + set_movm_offsets (fi, found_movm); + return addr; + } + + /* Note the size of the stack in the frame info structure. */ + stack_size = extract_signed_integer (buf, imm_size); + if (fi) + fi->stack_size = stack_size; + + /* We just consumed 2 + imm_size bytes. */ + addr += 2 + imm_size; + + /* No more prologue insns follow, so begin preparation to return. */ + /* Fix fi->frame if it's bogus at this point. */ + if (fi && fi->next == NULL && (fi->status & MY_FRAME_IN_SP)) + fi->frame = read_sp (); + + /* Note if/where callee saved registers were saved. */ + set_movm_offsets (fi, found_movm); + return addr; } - /* we don't get here */ + /* We never found an insn which allocates local stack space, regardless + this is the end of the prologue. */ + /* Fix fi->frame if it's bogus at this point. */ + if (fi && fi->next == NULL && (fi->status & MY_FRAME_IN_SP)) + fi->frame = read_sp (); + + /* Note if/where callee saved registers were saved. */ + set_movm_offsets (fi, found_movm); + return addr; } + +/* Function: frame_chain + Figure out and return the caller's frame pointer given current + frame_info struct. -/* Function: find_callers_reg - Find REGNUM on the stack. Otherwise, it's in an active register. - One thing we might want to do here is to check REGNUM against the - clobber mask, and somehow flag it as invalid if it isn't saved on - the stack somewhere. This would provide a graceful failure mode - when trying to get the value of caller-saves registers for an inner - frame. */ + We don't handle dummy frames yet but we would probably just return the + stack pointer that was in use at the time the function call was made? */ CORE_ADDR -mn10300_find_callers_reg (fi, regnum) +mn10300_frame_chain (fi) struct frame_info *fi; - int regnum; { -/* printf("mn10300_find_callers_reg\n"); */ + struct frame_info dummy_frame; - for (; fi; fi = fi->next) - if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) - return generic_read_register_dummy (fi->pc, fi->frame, regnum); - else if (fi->fsr.regs[regnum] != 0) - return read_memory_unsigned_integer (fi->fsr.regs[regnum], - REGISTER_RAW_SIZE(regnum)); + /* Walk through the prologue to determine the stack size, + location of saved registers, end of the prologue, etc. */ + if (fi->status == 0) + mn10300_analyze_prologue (fi, (CORE_ADDR)0); - return read_register (regnum); -} + /* Quit now if mn10300_analyze_prologue set NO_MORE_FRAMES. */ + if (fi->status & NO_MORE_FRAMES) + return 0; -/* Function: skip_prologue - Return the address of the first inst past the prologue of the function. -*/ + /* Now that we've analyzed our prologue, determine the frame + pointer for our caller. -CORE_ADDR -mn10300_skip_prologue (pc) - CORE_ADDR pc; -{ - CORE_ADDR func_addr, func_end; + If our caller has a frame pointer, then we need to + find the entry value of $a3 to our function. -/* printf("mn10300_skip_prologue\n"); */ + If fsr.regs[7] is nonzero, then it's at the memory + location pointed to by fsr.regs[7]. - /* See what the symbol table says */ + Else it's still in $a3. - if (find_pc_partial_function (pc, NULL, &func_addr, &func_end)) - { - struct symtab_and_line sal; + If our caller does not have a frame pointer, then his + frame base is fi->frame + -caller's stack size. */ + + /* The easiest way to get that info is to analyze our caller's frame. - sal = find_pc_line (func_addr, 0); + So we set up a dummy frame and call mn10300_analyze_prologue to + find stuff for us. */ + dummy_frame.pc = FRAME_SAVED_PC (fi); + dummy_frame.frame = fi->frame; + memset (dummy_frame.fsr.regs, '\000', sizeof dummy_frame.fsr.regs); + dummy_frame.status = 0; + dummy_frame.stack_size = 0; + mn10300_analyze_prologue (&dummy_frame); - if (sal.line != 0 && sal.end < func_end) - return sal.end; + if (dummy_frame.status & MY_FRAME_IN_FP) + { + /* Our caller has a frame pointer. So find the frame in $a3 or + in the stack. */ + if (fi->fsr.regs[7]) + return (read_memory_integer (fi->fsr.regs[FP_REGNUM], REGISTER_SIZE)); else - /* Either there's no line info, or the line after the prologue is after - the end of the function. In this case, there probably isn't a - prologue. */ - return pc; + return read_register (FP_REGNUM); + } + else + { + int adjust = 0; + + adjust += (fi->fsr.regs[2] ? 4 : 0); + adjust += (fi->fsr.regs[3] ? 4 : 0); + adjust += (fi->fsr.regs[6] ? 4 : 0); + adjust += (fi->fsr.regs[7] ? 4 : 0); + + /* Our caller does not have a frame pointer. So his frame starts + at the base of our frame (fi->frame) + register save space. */ + return fi->frame + adjust; } +} + +/* Function: skip_prologue + Return the address of the first inst past the prologue of the function. */ -/* We can't find the start of this function, so there's nothing we can do. */ - return pc; +CORE_ADDR +mn10300_skip_prologue (pc) + CORE_ADDR pc; +{ + /* We used to check the debug symbols, but that can lose if + we have a null prologue. */ + return mn10300_analyze_prologue (NULL, pc); } + /* Function: pop_frame This routine gets called when either the user uses the `return' command, or the call dummy breakpoint gets hit. */ @@ -185,32 +438,36 @@ mn10300_pop_frame (frame) { int regnum; -/* printf("mn10300_pop_frame start\n"); */ - if (PC_IN_CALL_DUMMY(frame->pc, frame->frame, frame->frame)) generic_pop_dummy_frame (); else { write_register (PC_REGNUM, FRAME_SAVED_PC (frame)); + /* Restore any saved registers. */ for (regnum = 0; regnum < NUM_REGS; regnum++) if (frame->fsr.regs[regnum] != 0) - write_register (regnum, - read_memory_unsigned_integer (frame->fsr.regs[regnum], - REGISTER_RAW_SIZE(regnum))); + { + ULONGEST value; + + value = read_memory_unsigned_integer (frame->fsr.regs[regnum], + REGISTER_RAW_SIZE (regnum)); + write_register (regnum, value); + } + /* Actually cut back the stack. */ write_register (SP_REGNUM, FRAME_FP (frame)); + + /* Don't we need to set the PC?!? XXX FIXME. */ } + /* Throw away any cached frame information. */ flush_cached_frames (); - -/* printf("mn10300_pop_frame end\n"); */ } /* Function: push_arguments Setup arguments for a call to the target. Arguments go in - order on the stack. -*/ + order on the stack. */ CORE_ADDR mn10300_push_arguments (nargs, args, sp, struct_return, struct_addr) @@ -222,29 +479,44 @@ mn10300_push_arguments (nargs, args, sp, struct_return, struct_addr) { int argnum = 0; int len = 0; - int stack_offset = 0; /* copy args to this offset onto stack */ + int stack_offset = 0; + int regsused = struct_return ? 1 : 0; -/* printf("mn10300_push_arguments start\n"); */ - - /* First, just for safety, make sure stack is aligned */ + /* This should be a nop, but align the stack just in case something + went wrong. Stacks are four byte aligned on the mn10300. */ sp &= ~3; - /* Now make space on the stack for the args. */ + /* Now make space on the stack for the args. + + XXX This doesn't appear to handle pass-by-invisible reference + arguments. */ for (argnum = 0; argnum < nargs; argnum++) - len += ((TYPE_LENGTH(VALUE_TYPE(args[argnum])) + 3) & ~3); + { + int arg_length = (TYPE_LENGTH (VALUE_TYPE (args[argnum])) + 3) & ~3; + + while (regsused < 2 && arg_length > 0) + { + regsused++; + arg_length -= 4; + } + len += arg_length; + } + /* Allocate stack space. */ sp -= len; + regsused = struct_return ? 1 : 0; /* Push all arguments onto the stack. */ for (argnum = 0; argnum < nargs; argnum++) { int len; char *val; + /* XXX Check this. What about UNIONS? */ if (TYPE_CODE (VALUE_TYPE (*args)) == TYPE_CODE_STRUCT && TYPE_LENGTH (VALUE_TYPE (*args)) > 8) { - /* for now, pretend structs aren't special */ + /* XXX Wrong, we want a pointer to this argument. */ len = TYPE_LENGTH (VALUE_TYPE (*args)); val = (char *)VALUE_CONTENTS (*args); } @@ -254,19 +526,27 @@ mn10300_push_arguments (nargs, args, sp, struct_return, struct_addr) val = (char *)VALUE_CONTENTS (*args); } + while (regsused < 2 && len > 0) + { + write_register (regsused, extract_unsigned_integer (val, 4)); + val += 4; + len -= 4; + regsused++; + } + while (len > 0) { write_memory (sp + stack_offset, val, 4); - len -= 4; val += 4; stack_offset += 4; } + args++; } -/* printf"mn10300_push_arguments end\n"); */ - + /* Make space for the flushback area. */ + sp -= 8; return sp; } @@ -279,9 +559,24 @@ mn10300_push_return_address (pc, sp) CORE_ADDR pc; CORE_ADDR sp; { -/* printf("mn10300_push_return_address\n"); */ + unsigned char buf[4]; + + store_unsigned_integer (buf, 4, CALL_DUMMY_ADDRESS ()); + write_memory (sp - 4, buf, 4); + return sp - 4; +} - /* write_register (RP_REGNUM, CALL_DUMMY_ADDRESS ()); */ +/* Function: store_struct_return (addr,sp) + Store the structure value return address for an inferior function + call. */ + +CORE_ADDR +mn10300_store_struct_return (addr, sp) + CORE_ADDR addr; + CORE_ADDR sp; +{ + /* The structure return address is passed as the first argument. */ + write_register (0, addr); return sp; } @@ -296,9 +591,14 @@ CORE_ADDR mn10300_frame_saved_pc (fi) struct frame_info *fi; { -/* printf("mn10300_frame_saved_pc\n"); */ + int adjust = 0; + + adjust += (fi->fsr.regs[2] ? 4 : 0); + adjust += (fi->fsr.regs[3] ? 4 : 0); + adjust += (fi->fsr.regs[6] ? 4 : 0); + adjust += (fi->fsr.regs[7] ? 4 : 0); - return (read_memory_integer(fi->frame - REGISTER_SIZE, REGISTER_SIZE)); + return (read_memory_integer (fi->frame + adjust, REGISTER_SIZE)); } void @@ -310,62 +610,59 @@ get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval) int regnum; enum lval_type *lval; { -/* printf("get_saved_register\n"); */ - generic_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval); } /* Function: init_extra_frame_info Setup the frame's frame pointer, pc, and frame addresses for saved - registers. Most of the work is done in frame_chain(). + registers. Most of the work is done in mn10300_analyze_prologue(). Note that when we are called for the last frame (currently active frame), that fi->pc and fi->frame will already be setup. However, fi->frame will be valid only if this routine uses FP. For previous frames, fi-frame will - always be correct (since that is derived from v850_frame_chain ()). + always be correct. mn10300_analyze_prologue will fix fi->frame if + it's not valid. We can be called with the PC in the call dummy under two circumstances. First, during normal backtracing, second, while figuring out the frame - pointer just prior to calling the target function (see run_stack_dummy). -*/ + pointer just prior to calling the target function (see run_stack_dummy). */ void mn10300_init_extra_frame_info (fi) struct frame_info *fi; { - struct prologue_info pi; - struct pifsr pifsrs[NUM_REGS + 1], *pifsr; - int reg; - if (fi->next) fi->pc = FRAME_SAVED_PC (fi->next); memset (fi->fsr.regs, '\000', sizeof fi->fsr.regs); + fi->status = 0; + fi->stack_size = 0; - /* The call dummy doesn't save any registers on the stack, so we can return - now. */ -/* - if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) - return; - - pi.pifsrs = pifsrs; -*/ + mn10300_analyze_prologue (fi, 0); +} - /* v850_scan_prologue (fi->pc, &pi); */ -/* - if (!fi->next && pi.framereg == SP_REGNUM) - fi->frame = read_register (pi.framereg) - pi.frameoffset; +/* This can be made more generic later. */ +static void +set_machine_hook (filename) + char *filename; +{ + int i; - for (pifsr = pifsrs; pifsr->framereg; pifsr++) + if (bfd_get_mach (exec_bfd) == bfd_mach_mn10300 + || bfd_get_mach (exec_bfd) == 0) { - fi->fsr.regs[pifsr->reg] = pifsr->offset + fi->frame; + for (i = 0; i < NUM_REGS; i++) + reg_names[i] = mn10300_generic_register_names[i]; + } - if (pifsr->framereg == SP_REGNUM) - fi->fsr.regs[pifsr->reg] += pi.frameoffset; + /* start-sanitize-am33 */ + if (bfd_get_mach (exec_bfd) == bfd_mach_am33) + { + for (i = 0; i < NUM_REGS; i++) + reg_names[i] = am33_register_names[i]; } -*/ -/* printf("init_extra_frame_info\n"); */ + /* end-sanitize-am33 */ } void @@ -374,5 +671,7 @@ _initialize_mn10300_tdep () /* printf("_initialize_mn10300_tdep\n"); */ tm_print_insn = print_insn_mn10300; + + specify_exec_file_hook (set_machine_hook); } -- cgit v1.1