From 81c0587e038d92c4ffcfb434d365c0c9af7d8eaf Mon Sep 17 00:00:00 2001 From: Michael Snyder Date: Fri, 22 Oct 2004 00:34:42 +0000 Subject: [PATCH] 2004-10-21 msnyder * mn10300-tdep.c: Replace struct mn10300_unwind_cache with struct trad_frame_cache. Don't seem to need any more. (mn10300_frame_unwind_cache): Use trad_frame_cache. Tentatively try using SP or A3 reg as frame base. (mn10300_frame_dummy_this_id): Rename to mn10300_frame_this_id. Call trad_frame_get_id. (mn10300_frame_prev_reg): Call trad_frame_get_reg. (mn10300_frame_base_address): Call trad_frame_get_this_base. (mn10300_frame_args_address, mn10300_frame_locals_address): Delete. Substitute mn10300_frame_base_address. (mn10300_frame_unwind_init): Call dwarf2_frame_sniffer (even though it doesn't seem to work yet). --- gdb/mn10300-tdep.c | 1387 +++++++++++----------------------------------------- 1 file changed, 275 insertions(+), 1112 deletions(-) diff --git a/gdb/mn10300-tdep.c b/gdb/mn10300-tdep.c index e9b7200..b064a2b 100644 --- a/gdb/mn10300-tdep.c +++ b/gdb/mn10300-tdep.c @@ -20,189 +20,72 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +/* MVS Notes: + + To get from 1.1 to 1.2, add: + use_struct_convention + store_return_value + extract_return_value + extract_struct_value_address + + Make sure to use regcache. */ + +/* MVS Notes: + + Apparently cannot run without a stub placeholder for unwind_dummy_id. +*/ + +/* MVS Notes: + + To get from 1.2 to 1.3, add: + read_pc, write_pc + frame_unwind_init + struct mn10300_unwind_cache + unwind_pc + unwind_dummy_id + frame_this_id + frame_prev_register + frame_sniffer (struct mn10300_frame_unwind) +*/ + #include "defs.h" -#include "frame.h" -#include "inferior.h" -#include "target.h" -#include "value.h" -#include "bfd.h" -#include "gdb_string.h" -#include "gdbcore.h" -#include "objfiles.h" -#include "regcache.h" #include "arch-utils.h" -#include "gdb_assert.h" #include "dis-asm.h" +#include "gdbtypes.h" +#include "regcache.h" +#include "gdb_string.h" +#include "gdb_assert.h" +#include "frame.h" +#include "frame-unwind.h" +#include "frame-base.h" +#include "trad-frame.h" +#include "symtab.h" +#include "dwarf2-frame.h" +#include "regcache.h" -#define D0_REGNUM 0 -#define D2_REGNUM 2 -#define D3_REGNUM 3 -#define A0_REGNUM 4 -#define A2_REGNUM 6 -#define A3_REGNUM 7 -#define MDR_REGNUM 10 -#define PSW_REGNUM 11 -#define LIR_REGNUM 12 -#define LAR_REGNUM 13 -#define MDRQ_REGNUM 14 -#define E0_REGNUM 15 -#define MCRH_REGNUM 26 -#define MCRL_REGNUM 27 -#define MCVF_REGNUM 28 - -enum movm_register_bits { - movm_exother_bit = 0x01, - movm_exreg1_bit = 0x02, - movm_exreg0_bit = 0x04, - movm_other_bit = 0x08, - movm_a3_bit = 0x10, - movm_a2_bit = 0x20, - movm_d3_bit = 0x40, - movm_d2_bit = 0x80 -}; - -extern void _initialize_mn10300_tdep (void); -static CORE_ADDR mn10300_analyze_prologue (struct frame_info *fi, - CORE_ADDR pc); - -/* mn10300 private data */ -struct gdbarch_tdep -{ - int am33_mode; -#define AM33_MODE (gdbarch_tdep (current_gdbarch)->am33_mode) +enum { + E_D0_REGNUM = 0, + E_D1_REGNUM = 1, + E_D2_REGNUM = 2, + E_D3_REGNUM = 3, + E_A0_REGNUM = 4, + E_A1_REGNUM = 5, + E_A2_REGNUM = 6, + E_A3_REGNUM = 7, + E_SP_REGNUM = 8, + E_PC_REGNUM = 9, + E_MDR_REGNUM = 10, + E_PSW_REGNUM = 11, + E_LIR_REGNUM = 12, + E_LAR_REGNUM = 13, + E_MDRQ_REGNUM = 14, + E_E0_REGNUM = 15, + E_MCRH_REGNUM = 26, + E_MCRL_REGNUM = 27, + E_MCVF_REGNUM = 28, + E_NUM_REGS = 32 }; -/* Additional info used by the frame */ - -struct frame_extra_info - { - int status; - int stack_size; - }; - - -static char * -register_name (int reg, char **regs, long sizeof_regs) -{ - if (reg < 0 || reg >= sizeof_regs / sizeof (regs[0])) - return NULL; - else - return regs[reg]; -} - -static const char * -mn10300_generic_register_name (int reg) -{ - static char *regs[] = - { "d0", "d1", "d2", "d3", "a0", "a1", "a2", "a3", - "sp", "pc", "mdr", "psw", "lir", "lar", "", "", - "", "", "", "", "", "", "", "", - "", "", "", "", "", "", "", "fp" - }; - return register_name (reg, regs, sizeof regs); -} - - -static const char * -am33_register_name (int reg) -{ - static char *regs[] = - { "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", "", "", "" - }; - return register_name (reg, regs, sizeof regs); -} - -static CORE_ADDR -mn10300_saved_pc_after_call (struct frame_info *fi) -{ - return read_memory_integer (read_register (SP_REGNUM), 4); -} - -static void -mn10300_extract_return_value (struct gdbarch *gdbarch, struct type *type, - struct regcache *regcache, void *valbuf) -{ - char buf[MAX_REGISTER_SIZE]; - int len = TYPE_LENGTH (type); - int reg, regsz; - - if (TYPE_CODE (type) == TYPE_CODE_PTR) - reg = 4; - else - reg = 0; - - regsz = register_size (gdbarch, reg); - if (len <= regsz) - { - regcache_raw_read (regcache, reg, buf); - memcpy (valbuf, buf, len); - } - else if (len <= 2 * regsz) - { - regcache_raw_read (regcache, reg, buf); - memcpy (valbuf, buf, regsz); - gdb_assert (regsz == register_size (gdbarch, reg + 1)); - regcache_raw_read (regcache, reg + 1, buf); - memcpy ((char *) valbuf + regsz, buf, len - regsz); - } - else - internal_error (__FILE__, __LINE__, - "Cannot extract return value %d bytes long.", len); -} - -static void -mn10300_store_return_value (struct gdbarch *gdbarch, struct type *type, - struct regcache *regcache, const void *valbuf) -{ - int len = TYPE_LENGTH (type); - int reg, regsz; - - if (TYPE_CODE (type) == TYPE_CODE_PTR) - reg = 4; - else - reg = 0; - - regsz = register_size (gdbarch, reg); - - if (len <= regsz) - regcache_raw_write_part (regcache, reg, 0, len, valbuf); - else if (len <= 2 * regsz) - { - regcache_raw_write (regcache, reg, valbuf); - gdb_assert (regsz == register_size (gdbarch, reg + 1)); - regcache_raw_write_part (regcache, reg+1, 0, - len - regsz, (char *) valbuf + regsz); - } - else - internal_error (__FILE__, __LINE__, - "Cannot store return value %d bytes long.", len); -} - -static struct frame_info *analyze_dummy_frame (CORE_ADDR, CORE_ADDR); -static struct frame_info * -analyze_dummy_frame (CORE_ADDR pc, CORE_ADDR frame) -{ - struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); - struct frame_info *dummy - = deprecated_frame_xmalloc_with_cleanup (SIZEOF_FRAME_SAVED_REGS, - sizeof (struct frame_extra_info)); - deprecated_update_frame_pc_hack (dummy, pc); - deprecated_update_frame_base_hack (dummy, frame); - get_frame_extra_info (dummy)->status = 0; - get_frame_extra_info (dummy)->stack_size = 0; - mn10300_analyze_prologue (dummy, pc); - do_cleanups (old_chain); - return dummy; -} - -/* Values for frame_info.status */ - -#define MY_FRAME_IN_SP 0x1 -#define MY_FRAME_IN_FP 0x2 -#define NO_MORE_FRAMES 0x4 /* Compute the alignment required by a type. */ @@ -250,9 +133,11 @@ mn10300_type_align (struct type *type) } } +/* MVS note this is deprecated. */ /* Should call_function allocate stack space for a struct return? */ +/* gcc_p unused */ static int -mn10300_use_struct_convention (struct type *type) +mn10300_use_struct_convention (int gcc_p, struct type *type) { /* Structures bigger than a pair of words can't be returned in registers. */ @@ -266,7 +151,8 @@ mn10300_use_struct_convention (struct type *type) /* Structures with a single field are handled as the field itself. */ if (TYPE_NFIELDS (type) == 1) - return mn10300_use_struct_convention (TYPE_FIELD_TYPE (type, 0)); + return mn10300_use_struct_convention (gcc_p, + TYPE_FIELD_TYPE (type, 0)); /* Structures with word or double-word size are passed in memory, as long as they require at least word alignment. */ @@ -282,967 +168,278 @@ mn10300_use_struct_convention (struct type *type) return 1; case TYPE_CODE_TYPEDEF: - return mn10300_use_struct_convention (check_typedef (type)); + return mn10300_use_struct_convention (gcc_p, check_typedef (type)); default: return 0; } } -/* Determine, for architecture GDBARCH, how a return value of TYPE - should be returned. If it is supposed to be returned in registers, - and READBUF is non-zero, read the appropriate value from REGCACHE, - and copy it into READBUF. If WRITEBUF is non-zero, write the value - from WRITEBUF into REGCACHE. */ - -static enum return_value_convention -mn10300_return_value (struct gdbarch *gdbarch, struct type *type, - struct regcache *regcache, void *readbuf, - const void *writebuf) -{ - if (mn10300_use_struct_convention (type)) - return RETURN_VALUE_STRUCT_CONVENTION; - - if (readbuf) - mn10300_extract_return_value (gdbarch, type, regcache, readbuf); - if (writebuf) - mn10300_store_return_value (gdbarch, type, regcache, writebuf); - - return RETURN_VALUE_REGISTER_CONVENTION; -} - -/* The breakpoint instruction must be the same size as the smallest - instruction in the instruction set. - - The Matsushita mn10x00 processors have single byte instructions - so we need a single byte breakpoint. Matsushita hasn't defined - one, so we defined it ourselves. */ - -const static unsigned char * -mn10300_breakpoint_from_pc (CORE_ADDR *bp_addr, int *bp_size) +/* MVS note this is deprecated. */ +static void +mn10300_store_return_value (struct type *type, + struct regcache *regcache, const void *valbuf) { - static char breakpoint[] = - {0xff}; - *bp_size = 1; - return breakpoint; -} - + struct gdbarch *gdbarch = get_regcache_arch (regcache); + int len = TYPE_LENGTH (type); + int reg, regsz; + + if (TYPE_CODE (type) == TYPE_CODE_PTR) + reg = 4; + else + reg = 0; -/* Fix fi->frame if it's bogus at this point. This is a helper - function for mn10300_analyze_prologue. */ + regsz = register_size (gdbarch, reg); -static void -fix_frame_pointer (struct frame_info *fi, int stack_size) -{ - if (fi && get_next_frame (fi) == NULL) + if (len <= regsz) + regcache_raw_write_part (regcache, reg, 0, len, valbuf); + else if (len <= 2 * regsz) { - if (get_frame_extra_info (fi)->status & MY_FRAME_IN_SP) - deprecated_update_frame_base_hack (fi, read_sp () - stack_size); - else if (get_frame_extra_info (fi)->status & MY_FRAME_IN_FP) - deprecated_update_frame_base_hack (fi, read_register (A3_REGNUM)); + regcache_raw_write (regcache, reg, valbuf); + gdb_assert (regsz == register_size (gdbarch, reg + 1)); + regcache_raw_write_part (regcache, reg+1, 0, + len - regsz, (char *) valbuf + regsz); } + else + internal_error (__FILE__, __LINE__, + "Cannot store return value %d bytes long.", len); } - -/* Set offsets of registers saved by movm instruction. - This is a helper function for mn10300_analyze_prologue. */ - +/* MVS note deprecated. */ static void -set_movm_offsets (struct frame_info *fi, int movm_args) +mn10300_extract_return_value (struct type *type, + struct regcache *regcache, void *valbuf) { - int offset = 0; + struct gdbarch *gdbarch = get_regcache_arch (regcache); + char buf[MAX_REGISTER_SIZE]; + int len = TYPE_LENGTH (type); + int reg, regsz; - if (fi == NULL || movm_args == 0) - return; + if (TYPE_CODE (type) == TYPE_CODE_PTR) + reg = 4; + else + reg = 0; - if (movm_args & movm_other_bit) - { - /* The `other' bit leaves a blank area of four bytes at the - beginning of its block of saved registers, making it 32 bytes - long in total. */ - deprecated_get_frame_saved_regs (fi)[LAR_REGNUM] = get_frame_base (fi) + offset + 4; - deprecated_get_frame_saved_regs (fi)[LIR_REGNUM] = get_frame_base (fi) + offset + 8; - deprecated_get_frame_saved_regs (fi)[MDR_REGNUM] = get_frame_base (fi) + offset + 12; - deprecated_get_frame_saved_regs (fi)[A0_REGNUM + 1] = get_frame_base (fi) + offset + 16; - deprecated_get_frame_saved_regs (fi)[A0_REGNUM] = get_frame_base (fi) + offset + 20; - deprecated_get_frame_saved_regs (fi)[D0_REGNUM + 1] = get_frame_base (fi) + offset + 24; - deprecated_get_frame_saved_regs (fi)[D0_REGNUM] = get_frame_base (fi) + offset + 28; - offset += 32; - } - if (movm_args & movm_a3_bit) - { - deprecated_get_frame_saved_regs (fi)[A3_REGNUM] = get_frame_base (fi) + offset; - offset += 4; - } - if (movm_args & movm_a2_bit) - { - deprecated_get_frame_saved_regs (fi)[A2_REGNUM] = get_frame_base (fi) + offset; - offset += 4; - } - if (movm_args & movm_d3_bit) - { - deprecated_get_frame_saved_regs (fi)[D3_REGNUM] = get_frame_base (fi) + offset; - offset += 4; - } - if (movm_args & movm_d2_bit) + regsz = register_size (gdbarch, reg); + if (len <= regsz) { - deprecated_get_frame_saved_regs (fi)[D2_REGNUM] = get_frame_base (fi) + offset; - offset += 4; + regcache_raw_read (regcache, reg, buf); + memcpy (valbuf, buf, len); } - if (AM33_MODE) + else if (len <= 2 * regsz) { - if (movm_args & movm_exother_bit) - { - deprecated_get_frame_saved_regs (fi)[MCVF_REGNUM] = get_frame_base (fi) + offset; - deprecated_get_frame_saved_regs (fi)[MCRL_REGNUM] = get_frame_base (fi) + offset + 4; - deprecated_get_frame_saved_regs (fi)[MCRH_REGNUM] = get_frame_base (fi) + offset + 8; - deprecated_get_frame_saved_regs (fi)[MDRQ_REGNUM] = get_frame_base (fi) + offset + 12; - deprecated_get_frame_saved_regs (fi)[E0_REGNUM + 1] = get_frame_base (fi) + offset + 16; - deprecated_get_frame_saved_regs (fi)[E0_REGNUM + 0] = get_frame_base (fi) + offset + 20; - offset += 24; - } - if (movm_args & movm_exreg1_bit) - { - deprecated_get_frame_saved_regs (fi)[E0_REGNUM + 7] = get_frame_base (fi) + offset; - deprecated_get_frame_saved_regs (fi)[E0_REGNUM + 6] = get_frame_base (fi) + offset + 4; - deprecated_get_frame_saved_regs (fi)[E0_REGNUM + 5] = get_frame_base (fi) + offset + 8; - deprecated_get_frame_saved_regs (fi)[E0_REGNUM + 4] = get_frame_base (fi) + offset + 12; - offset += 16; - } - if (movm_args & movm_exreg0_bit) - { - deprecated_get_frame_saved_regs (fi)[E0_REGNUM + 3] = get_frame_base (fi) + offset; - deprecated_get_frame_saved_regs (fi)[E0_REGNUM + 2] = get_frame_base (fi) + offset + 4; - offset += 8; - } + regcache_raw_read (regcache, reg, buf); + memcpy (valbuf, buf, regsz); + gdb_assert (regsz == register_size (gdbarch, reg + 1)); + regcache_raw_read (regcache, reg + 1, buf); + memcpy ((char *) valbuf + regsz, buf, len - regsz); } + else + internal_error (__FILE__, __LINE__, + "Cannot extract return value %d bytes long.", len); } - -/* The main purpose of this file is dealing with prologues to extract - information about stack frames and saved registers. - - In gcc/config/mn13000/mn10300.c, the expand_prologue prologue - function is pretty readable, and has a nice explanation of how the - prologue is generated. The prologues generated by that code will - have the following form (NOTE: the current code doesn't handle all - this!): - - + If this is an old-style varargs function, then its arguments - need to be flushed back to the stack: - - mov d0,(4,sp) - mov d1,(4,sp) - - + If we use any of the callee-saved registers, save them now. - - movm [some callee-saved registers],(sp) - - + If we have any floating-point registers to save: - - - Decrement the stack pointer to reserve space for the registers. - If the function doesn't need a frame pointer, we may combine - this with the adjustment that reserves space for the frame. - - add -SIZE, sp - - - Save the floating-point registers. We have two possible - strategies: - - . Save them at fixed offset from the SP: - - fmov fsN,(OFFSETN,sp) - fmov fsM,(OFFSETM,sp) - ... - - Note that, if OFFSETN happens to be zero, you'll get the - different opcode: fmov fsN,(sp) - - . Or, set a0 to the start of the save area, and then use - post-increment addressing to save the FP registers. - - mov sp, a0 - add SIZE, a0 - fmov fsN,(a0+) - fmov fsM,(a0+) - ... - - + If the function needs a frame pointer, we set it here. - - mov sp, a3 - - + Now we reserve space for the stack frame proper. This could be - merged into the `add -SIZE, sp' instruction for FP saves up - above, unless we needed to set the frame pointer in the previous - step, or the frame is so large that allocating the whole thing at - once would put the FP register save slots out of reach of the - addressing mode (128 bytes). - - add -SIZE, 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 ($a3). - - 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. */ - -static CORE_ADDR -mn10300_analyze_prologue (struct frame_info *fi, CORE_ADDR pc) +static char * +register_name (int reg, char **regs, long sizeof_regs) { - CORE_ADDR func_addr, func_end, addr, stop; - CORE_ADDR stack_size; - int imm_size; - unsigned char buf[4]; - int status, movm_args = 0; - char *name; - - /* Use the PC in the frame if it's provided to look up the - start of this function. - - Note: kevinb/2003-07-16: We used to do the following here: - pc = (fi ? get_frame_pc (fi) : pc); - But this is (now) badly broken when called from analyze_dummy_frame(). - */ - pc = (pc ? pc : get_frame_pc (fi)); - - /* 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) - { - if (fi != NULL) - get_frame_extra_info (fi)->status = NO_MORE_FRAMES; - return pc; - } - - /* At the start of a function our frame is in the stack pointer. */ - if (fi) - get_frame_extra_info (fi)->status = MY_FRAME_IN_SP; - - /* 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 = deprecated_read_memory_nobpt (pc, buf, 2); - if (status != 0) - return pc; - -#if 0 - /* Note: kevinb/2003-07-16: We shouldn't be making these sorts of - changes to the frame in prologue examination code. */ - /* 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. - - In this case fi->frame is bogus, we need to fix it. */ - if (fi && buf[0] == 0xf0 && buf[1] == 0xfc) - { - if (get_next_frame (fi) == NULL) - deprecated_update_frame_base_hack (fi, read_sp ()); - return get_frame_pc (fi); - } - - /* Similarly if we're stopped on the first insn of a prologue as our - frame hasn't been allocated yet. */ - if (fi && get_frame_pc (fi) == func_addr) - { - if (get_next_frame (fi) == NULL) - deprecated_update_frame_base_hack (fi, read_sp ()); - return get_frame_pc (fi); - } -#endif - - /* Figure out where to stop scanning. */ - stop = fi ? pc : func_end; - - /* Don't walk off the end of the function. */ - stop = stop > func_end ? func_end : stop; - - /* Start scanning on the first instruction of this function. */ - addr = func_addr; - - /* Suck in two bytes. */ - if (addr + 2 >= stop - || (status = deprecated_read_memory_nobpt (addr, buf, 2)) != 0) - { - fix_frame_pointer (fi, 0); - return addr; - } - - /* First see if this insn sets the stack pointer from a register; if - so, it's probably the initialization of the stack pointer in _start, - so mark this as the bottom-most frame. */ - if (buf[0] == 0xf2 && (buf[1] & 0xf3) == 0xf0) - { - if (fi) - get_frame_extra_info (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) - { - /* Extract the register list for the movm instruction. */ - status = deprecated_read_memory_nobpt (addr + 1, buf, 1); - movm_args = *buf; - - 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 && get_next_frame (fi) == NULL) - deprecated_update_frame_base_hack (fi, read_sp ()); - - /* Note if/where callee saved registers were saved. */ - set_movm_offsets (fi, movm_args); - return addr; - } - - /* Get the next two bytes so the prologue scan can continue. */ - status = deprecated_read_memory_nobpt (addr, buf, 2); - if (status != 0) - { - /* Fix fi->frame since it's bogus at this point. */ - if (fi && get_next_frame (fi) == NULL) - deprecated_update_frame_base_hack (fi, read_sp ()); - - /* Note if/where callee saved registers were saved. */ - set_movm_offsets (fi, movm_args); - 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) - { - get_frame_extra_info (fi)->status |= MY_FRAME_IN_FP; - get_frame_extra_info (fi)->status &= ~MY_FRAME_IN_SP; - } - - /* Quit now if we're beyond the stop point. */ - if (addr >= stop) - { - /* Fix fi->frame if it's bogus at this point. */ - fix_frame_pointer (fi, 0); - - /* Note if/where callee saved registers were saved. */ - set_movm_offsets (fi, movm_args); - return addr; - } - - /* Get two more bytes so scanning can continue. */ - status = deprecated_read_memory_nobpt (addr, buf, 2); - if (status != 0) - { - /* Fix fi->frame if it's bogus at this point. */ - fix_frame_pointer (fi, 0); - - /* Note if/where callee saved registers were saved. */ - set_movm_offsets (fi, movm_args); - 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 = deprecated_read_memory_nobpt (addr, buf, 2); - if (status != 0) - { - /* Fix fi->frame if it's bogus at this point. */ - fix_frame_pointer (fi, 0); - - /* Note if/where callee saved registers were saved. */ - set_movm_offsets (fi, movm_args); - 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 = deprecated_read_memory_nobpt (addr + 2, buf, imm_size); - if (status != 0) - { - /* Fix fi->frame if it's bogus at this point. */ - fix_frame_pointer (fi, 0); - - /* Note if/where callee saved registers were saved. */ - set_movm_offsets (fi, movm_args); - return addr; - } - - /* Note the size of the stack in the frame info structure. */ - stack_size = extract_signed_integer (buf, imm_size); - if (fi) - get_frame_extra_info (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. */ - fix_frame_pointer (fi, stack_size); - - /* Note if/where callee saved registers were saved. */ - set_movm_offsets (fi, movm_args); - return addr; - } - - /* 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. */ - fix_frame_pointer (fi, 0); - - /* Note if/where callee saved registers were saved. */ - set_movm_offsets (fi, movm_args); - return addr; + if (reg < 0 || reg >= sizeof_regs / sizeof (regs[0])) + return NULL; + else + return regs[reg]; } - -/* Function: saved_regs_size - Return the size in bytes of the register save area, based on the - saved_regs array in FI. */ -static int -saved_regs_size (struct frame_info *fi) +static const char * +mn10300_generic_register_name (int reg) { - int adjust = 0; - int i; - - /* Reserve four bytes for every register saved. */ - for (i = 0; i < NUM_REGS; i++) - if (deprecated_get_frame_saved_regs (fi)[i]) - adjust += 4; - - /* If we saved LIR, then it's most likely we used a `movm' - instruction with the `other' bit set, in which case the SP is - decremented by an extra four bytes, "to simplify calculation - of the transfer area", according to the processor manual. */ - if (deprecated_get_frame_saved_regs (fi)[LIR_REGNUM]) - adjust += 4; - - return adjust; + static char *regs[] = + { "d0", "d1", "d2", "d3", "a0", "a1", "a2", "a3", + "sp", "pc", "mdr", "psw", "lir", "lar", "", "", + "", "", "", "", "", "", "", "", + "", "", "", "", "", "", "", "fp" + }; + return register_name (reg, regs, sizeof regs); } -/* Function: frame_chain - Figure out and return the caller's frame pointer given current - frame_info struct. - - 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? */ - -static CORE_ADDR -mn10300_frame_chain (struct frame_info *fi) +static const char * +am33_register_name (int reg) { - struct frame_info *dummy; - /* Walk through the prologue to determine the stack size, - location of saved registers, end of the prologue, etc. */ - if (get_frame_extra_info (fi)->status == 0) - mn10300_analyze_prologue (fi, (CORE_ADDR) 0); - - /* Quit now if mn10300_analyze_prologue set NO_MORE_FRAMES. */ - if (get_frame_extra_info (fi)->status & NO_MORE_FRAMES) - return 0; - - /* Now that we've analyzed our prologue, determine the frame - pointer for our caller. - - If our caller has a frame pointer, then we need to - find the entry value of $a3 to our function. - - If fsr.regs[A3_REGNUM] is nonzero, then it's at the memory - location pointed to by fsr.regs[A3_REGNUM]. - - Else it's still in $a3. - - 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. - So we set up a dummy frame and call mn10300_analyze_prologue to - find stuff for us. */ - dummy = analyze_dummy_frame (DEPRECATED_FRAME_SAVED_PC (fi), get_frame_base (fi)); - - if (get_frame_extra_info (dummy)->status & MY_FRAME_IN_FP) - { - /* Our caller has a frame pointer. So find the frame in $a3 or - in the stack. */ - if (deprecated_get_frame_saved_regs (fi)[A3_REGNUM]) - return (read_memory_integer (deprecated_get_frame_saved_regs (fi)[A3_REGNUM], - DEPRECATED_REGISTER_SIZE)); - else - return read_register (A3_REGNUM); - } - else - { - int adjust = saved_regs_size (fi); - - /* Our caller does not have a frame pointer. So his frame starts - at the base of our frame (fi->frame) + register save space - + . */ - return get_frame_base (fi) + adjust + -get_frame_extra_info (dummy)->stack_size; - } + static char *regs[] = + { "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", "", "", "" + }; + return register_name (reg, regs, sizeof regs); } -/* Function: skip_prologue - Return the address of the first inst past the prologue of the function. */ -static CORE_ADDR -mn10300_skip_prologue (CORE_ADDR pc) +static struct type * +mn10300_register_type (struct gdbarch *gdbarch, int reg) { - /* We used to check the debug symbols, but that can lose if - we have a null prologue. */ - return mn10300_analyze_prologue (NULL, pc); + return builtin_type_int; } -/* generic_pop_current_frame calls this function if the current - frame isn't a dummy frame. */ -static void -mn10300_pop_frame_regular (struct frame_info *frame) +static CORE_ADDR +mn10300_read_pc (ptid_t ptid) { - int regnum; - - write_register (PC_REGNUM, DEPRECATED_FRAME_SAVED_PC (frame)); - - /* Restore any saved registers. */ - for (regnum = 0; regnum < NUM_REGS; regnum++) - if (deprecated_get_frame_saved_regs (frame)[regnum] != 0) - { - ULONGEST value; - - value = read_memory_unsigned_integer (deprecated_get_frame_saved_regs (frame)[regnum], - register_size (current_gdbarch, regnum)); - write_register (regnum, value); - } - - /* Actually cut back the stack, adjusted by the saved registers like - ret would. */ - write_register (SP_REGNUM, get_frame_base (frame) + saved_regs_size (frame)); + return read_register_pid (E_PC_REGNUM, ptid); } -/* Function: pop_frame - This routine gets called when either the user uses the `return' - command, or the call dummy breakpoint gets hit. */ static void -mn10300_pop_frame (void) +mn10300_write_pc (CORE_ADDR val, ptid_t ptid) { - struct frame_info *frame = get_current_frame (); - if (get_frame_type (frame) == DUMMY_FRAME) - /* NOTE: cagney/2002-22-23: Does this ever occure? Surely a dummy - frame will have already been poped by the "infrun.c" code. */ - deprecated_pop_dummy_frame (); - else - mn10300_pop_frame_regular (frame); - /* Throw away any cached frame information. */ - flush_cached_frames (); + return write_register_pid (E_PC_REGNUM, val, ptid); } -/* Function: push_arguments - Setup arguments for a call to the target. Arguments go in - order on the stack. */ - -static CORE_ADDR -mn10300_push_arguments (int nargs, struct value **args, CORE_ADDR sp, - int struct_return, CORE_ADDR struct_addr) -{ - int argnum = 0; - int len = 0; - int stack_offset = 0; - int regsused = struct_return ? 1 : 0; - - /* 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. - - XXX This doesn't appear to handle pass-by-invisible reference - arguments. */ - for (argnum = 0; argnum < nargs; argnum++) - { - 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) - { - /* XXX Wrong, we want a pointer to this argument. */ - len = TYPE_LENGTH (VALUE_TYPE (*args)); - val = (char *) VALUE_CONTENTS (*args); - } - else - { - len = TYPE_LENGTH (VALUE_TYPE (*args)); - 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++; - } - - /* Make space for the flushback area. */ - sp -= 8; - return sp; -} - -/* Function: push_return_address (pc) - Set up the return address for the inferior function call. - Needed for targets where we don't actually execute a JSR/BSR instruction */ - -static CORE_ADDR -mn10300_push_return_address (CORE_ADDR pc, CORE_ADDR sp) -{ - unsigned char buf[4]; - - store_unsigned_integer (buf, 4, entry_point_address ()); - write_memory (sp - 4, buf, 4); - return sp - 4; -} +/* The breakpoint instruction must be the same size as the smallest + instruction in the instruction set. -/* Function: store_struct_return (addr,sp) - Store the structure value return address for an inferior function - call. */ + The Matsushita mn10x00 processors have single byte instructions + so we need a single byte breakpoint. Matsushita hasn't defined + one, so we defined it ourselves. */ -static void -mn10300_store_struct_return (CORE_ADDR addr, CORE_ADDR sp) +const static unsigned char * +mn10300_breakpoint_from_pc (CORE_ADDR *bp_addr, int *bp_size) { - /* The structure return address is passed as the first argument. */ - write_register (0, addr); + static char breakpoint[] = {0xff}; + *bp_size = 1; + return breakpoint; } -/* Function: frame_saved_pc - Find the caller of this frame. We do this by seeing if RP_REGNUM - is saved in the stack anywhere, otherwise we get it from the - registers. If the inner frame is a dummy frame, return its PC - instead of RP, because that's where "caller" of the dummy-frame - will be found. */ +/* Function: skip_prologue + Return the address of the first inst past the prologue of the function. */ static CORE_ADDR -mn10300_frame_saved_pc (struct frame_info *fi) +mn10300_skip_prologue (CORE_ADDR pc) { - int adjust = saved_regs_size (fi); - - return (read_memory_integer (get_frame_base (fi) + adjust, - DEPRECATED_REGISTER_SIZE)); + /* FIXME: not implemented. */ + /* First approximation, try simply using scan_prologue_using_sal. */ + return skip_prologue_using_sal (pc); } -/* Function: mn10300_init_extra_frame_info - Setup the frame's frame pointer, pc, and frame addresses for saved - 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 get_frame_pc (fi) 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. 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 call_function_by_hand). */ - -static void -mn10300_init_extra_frame_info (int fromleaf, struct frame_info *fi) +/* Simple frame_unwind_cache. + This finds the "extra info" for the frame. */ +static struct trad_frame_cache * +mn10300_frame_unwind_cache (struct frame_info *next_frame, + void **this_prologue_cache) { - if (get_next_frame (fi)) - deprecated_update_frame_pc_hack (fi, DEPRECATED_FRAME_SAVED_PC (get_next_frame (fi))); + struct trad_frame_cache *cache; - frame_saved_regs_zalloc (fi); - frame_extra_info_zalloc (fi, sizeof (struct frame_extra_info)); + if (*this_prologue_cache) + return (*this_prologue_cache); - get_frame_extra_info (fi)->status = 0; - get_frame_extra_info (fi)->stack_size = 0; + cache = trad_frame_cache_zalloc (next_frame); + trad_frame_set_id (cache, + frame_id_build (gdbarch_unwind_sp (current_gdbarch, + next_frame), + gdbarch_unwind_pc (current_gdbarch, + next_frame))); - mn10300_analyze_prologue (fi, 0); + /* FIXME: The SP isn't the frame base, so this is 0th approximation. */ + /* FIXME: The A3 reg isn't always the frame register either, so this + is 1st approximation. */ + trad_frame_set_this_base (cache, + frame_unwind_register_signed (next_frame, + E_A3_REGNUM)); + (*this_prologue_cache) = cache; + return cache; } - -/* This function's job is handled by init_extra_frame_info. */ -static void -mn10300_frame_init_saved_regs (struct frame_info *frame) +/* Here is a dummy implementation. */ +static struct frame_id +mn10300_dummy_unwind_dummy_id (struct gdbarch *gdbarch, + struct frame_info *next_frame) { + return frame_id_build (0, 0); } - -/* Function: mn10300_virtual_frame_pointer - Return the register that the function uses for a frame pointer, - plus any necessary offset to be applied to the register before - any frame pointer offsets. */ - +/* Trad frame implementation. */ static void -mn10300_virtual_frame_pointer (CORE_ADDR pc, - int *reg, - LONGEST *offset) +mn10300_frame_this_id (struct frame_info *next_frame, + void **this_prologue_cache, + struct frame_id *this_id) { - struct frame_info *dummy = analyze_dummy_frame (pc, 0); - /* Set up a dummy frame_info, Analyze the prolog and fill in the - extra info. */ - /* Results will tell us which type of frame it uses. */ - if (get_frame_extra_info (dummy)->status & MY_FRAME_IN_SP) - { - *reg = SP_REGNUM; - *offset = -(get_frame_extra_info (dummy)->stack_size); - } - else - { - *reg = A3_REGNUM; - *offset = 0; - } -} + struct trad_frame_cache *cache = + mn10300_frame_unwind_cache (next_frame, this_prologue_cache); -static int -mn10300_reg_struct_has_addr (int gcc_p, struct type *type) -{ - return (TYPE_LENGTH (type) > 8); + trad_frame_get_id (cache, this_id); } -static struct type * -mn10300_register_virtual_type (int reg) -{ - return builtin_type_int; +static void +mn10300_frame_prev_register (struct frame_info *next_frame, + void **this_prologue_cache, + int regnum, int *optimizedp, + enum lval_type *lvalp, CORE_ADDR *addrp, + int *realnump, void *bufferp) +{ + struct trad_frame_cache *cache = + mn10300_frame_unwind_cache (next_frame, this_prologue_cache); + + trad_frame_get_register (cache, next_frame, regnum, optimizedp, + lvalp, addrp, realnump, bufferp); + /* Or... + trad_frame_get_prev_register (next_frame, cache->prev_regs, regnum, + optimizedp, lvalp, addrp, realnump, bufferp); + */ } -static int -mn10300_register_byte (int reg) -{ - return (reg * 4); -} +static const struct frame_unwind mn10300_frame_unwind = { + NORMAL_FRAME, + mn10300_frame_this_id, + mn10300_frame_prev_register +}; -static int -mn10300_register_virtual_size (int reg) +static CORE_ADDR +mn10300_frame_base_address (struct frame_info *next_frame, + void **this_prologue_cache) { - return 4; -} + struct trad_frame_cache *cache = + mn10300_frame_unwind_cache (next_frame, this_prologue_cache); -static int -mn10300_register_raw_size (int reg) -{ - return 4; + return trad_frame_get_this_base (cache); } -/* If DWARF2 is a register number appearing in Dwarf2 debug info, then - mn10300_dwarf2_reg_to_regnum (DWARF2) is the corresponding GDB - register number. Why don't Dwarf2 and GDB use the same numbering? - Who knows? But since people have object files lying around with - the existing Dwarf2 numbering, and other people have written stubs - to work with the existing GDB, neither of them can change. So we - just have to cope. */ -static int -mn10300_dwarf2_reg_to_regnum (int dwarf2) +static const struct frame_unwind * +mn10300_frame_sniffer (struct frame_info *next_frame) { - /* This table is supposed to be shaped like the REGISTER_NAMES - initializer in gcc/config/mn10300/mn10300.h. Registers which - appear in GCC's numbering, but have no counterpart in GDB's - world, are marked with a -1. */ - static int dwarf2_to_gdb[] = { - 0, 1, 2, 3, 4, 5, 6, 7, -1, 8, - 15, 16, 17, 18, 19, 20, 21, 22 - }; - int gdb; - - if (dwarf2 < 0 - || dwarf2 >= (sizeof (dwarf2_to_gdb) / sizeof (dwarf2_to_gdb[0])) - || dwarf2_to_gdb[dwarf2] == -1) - internal_error (__FILE__, __LINE__, - "bogus register number in debug info: %d", dwarf2); - - return dwarf2_to_gdb[dwarf2]; + return &mn10300_frame_unwind; } -static void -mn10300_print_register (const char *name, int regnum, int reg_width) -{ - char raw_buffer[MAX_REGISTER_SIZE]; - - if (reg_width) - printf_filtered ("%*s: ", reg_width, name); - else - printf_filtered ("%s: ", name); - - /* Get the data */ - if (!frame_register_read (deprecated_selected_frame, regnum, raw_buffer)) - { - printf_filtered ("[invalid]"); - return; - } - else - { - int byte; - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - { - for (byte = register_size (current_gdbarch, regnum) - DEPRECATED_REGISTER_VIRTUAL_SIZE (regnum); - byte < register_size (current_gdbarch, regnum); - byte++) - printf_filtered ("%02x", (unsigned char) raw_buffer[byte]); - } - else - { - for (byte = DEPRECATED_REGISTER_VIRTUAL_SIZE (regnum) - 1; - byte >= 0; - byte--) - printf_filtered ("%02x", (unsigned char) raw_buffer[byte]); - } - } -} +static const struct frame_base mn10300_frame_base = { + &mn10300_frame_unwind, + mn10300_frame_base_address, + mn10300_frame_base_address, + mn10300_frame_base_address +}; -static void -mn10300_do_registers_info (int regnum, int fpregs) +static CORE_ADDR +mn10300_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame) { - if (regnum >= 0) - { - const char *name = REGISTER_NAME (regnum); - if (name == NULL || name[0] == '\0') - error ("Not a valid register for the current processor type"); - mn10300_print_register (name, regnum, 0); - printf_filtered ("\n"); - } - else - { - /* print registers in an array 4x8 */ - int r; - int reg; - const int nr_in_row = 4; - const int reg_width = 4; - for (r = 0; r < NUM_REGS; r += nr_in_row) - { - int c; - int printing = 0; - int padding = 0; - for (c = r; c < r + nr_in_row; c++) - { - const char *name = REGISTER_NAME (c); - if (name != NULL && *name != '\0') - { - printing = 1; - while (padding > 0) - { - printf_filtered (" "); - padding--; - } - mn10300_print_register (name, c, reg_width); - printf_filtered (" "); - } - else - { - padding += (reg_width + 2 + 8 + 1); - } - } - if (printing) - printf_filtered ("\n"); - } - } + ULONGEST pc; + + frame_unwind_unsigned_register (next_frame, E_PC_REGNUM, &pc); + return pc; } static CORE_ADDR -mn10300_read_fp (void) +mn10300_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame) { - /* That's right, we're using the stack pointer as our frame pointer. */ - gdb_assert (SP_REGNUM >= 0); - return read_register (SP_REGNUM); -} + ULONGEST sp; -/* Dump out the mn10300 speciic architecture information. */ + frame_unwind_unsigned_register (next_frame, E_SP_REGNUM, &sp); + return sp; +} static void -mn10300_dump_tdep (struct gdbarch *current_gdbarch, struct ui_file *file) +mn10300_frame_unwind_init (struct gdbarch *gdbarch) { - struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); - fprintf_unfiltered (file, "mn10300_dump_tdep: am33_mode = %d\n", - tdep->am33_mode); + frame_unwind_append_sniffer (gdbarch, dwarf2_frame_sniffer); + frame_unwind_append_sniffer (gdbarch, mn10300_frame_sniffer); + frame_base_set_default (gdbarch, &mn10300_frame_base); + set_gdbarch_unwind_dummy_id (gdbarch, mn10300_dummy_unwind_dummy_id); + set_gdbarch_unwind_pc (gdbarch, mn10300_unwind_pc); + set_gdbarch_unwind_sp (gdbarch, mn10300_unwind_sp); } static struct gdbarch * @@ -1250,86 +447,52 @@ mn10300_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) { struct gdbarch *gdbarch; - struct gdbarch_tdep *tdep = NULL; - int am33_mode; - gdbarch_register_name_ftype *register_name; - int mach; - int num_regs; arches = gdbarch_list_lookup_by_info (arches, &info); if (arches != NULL) return arches->gdbarch; - tdep = xmalloc (sizeof (struct gdbarch_tdep)); - gdbarch = gdbarch_alloc (&info, tdep); + gdbarch = gdbarch_alloc (&info, NULL); - if (info.bfd_arch_info != NULL - && info.bfd_arch_info->arch == bfd_arch_mn10300) - mach = info.bfd_arch_info->mach; - else - mach = 0; - switch (mach) + switch (info.bfd_arch_info->mach) { case 0: case bfd_mach_mn10300: - am33_mode = 0; - register_name = mn10300_generic_register_name; - num_regs = 32; + set_gdbarch_register_name (gdbarch, mn10300_generic_register_name); break; case bfd_mach_am33: - am33_mode = 1; - register_name = am33_register_name; - num_regs = 32; + set_gdbarch_register_name (gdbarch, am33_register_name); break; default: internal_error (__FILE__, __LINE__, "mn10300_gdbarch_init: Unknown mn10300 variant"); - return NULL; /* keep GCC happy. */ + break; } /* Registers. */ - set_gdbarch_num_regs (gdbarch, num_regs); - set_gdbarch_register_name (gdbarch, register_name); - set_gdbarch_deprecated_register_size (gdbarch, 4); - set_gdbarch_deprecated_register_raw_size (gdbarch, mn10300_register_raw_size); - set_gdbarch_deprecated_register_byte (gdbarch, mn10300_register_byte); - set_gdbarch_deprecated_register_virtual_size (gdbarch, mn10300_register_virtual_size); - set_gdbarch_deprecated_register_virtual_type (gdbarch, mn10300_register_virtual_type); - set_gdbarch_dwarf2_reg_to_regnum (gdbarch, mn10300_dwarf2_reg_to_regnum); - set_gdbarch_deprecated_do_registers_info (gdbarch, mn10300_do_registers_info); - set_gdbarch_sp_regnum (gdbarch, 8); - set_gdbarch_pc_regnum (gdbarch, 9); - set_gdbarch_deprecated_fp_regnum (gdbarch, 31); - set_gdbarch_virtual_frame_pointer (gdbarch, mn10300_virtual_frame_pointer); - - /* Breakpoints. */ - set_gdbarch_breakpoint_from_pc (gdbarch, mn10300_breakpoint_from_pc); + set_gdbarch_num_regs (gdbarch, E_NUM_REGS); + set_gdbarch_register_type (gdbarch, mn10300_register_type); + set_gdbarch_skip_prologue (gdbarch, mn10300_skip_prologue); + set_gdbarch_read_pc (gdbarch, mn10300_read_pc); + set_gdbarch_write_pc (gdbarch, mn10300_write_pc); + set_gdbarch_pc_regnum (gdbarch, E_PC_REGNUM); + set_gdbarch_sp_regnum (gdbarch, E_SP_REGNUM); /* Stack unwinding. */ set_gdbarch_inner_than (gdbarch, core_addr_lessthan); - set_gdbarch_deprecated_saved_pc_after_call (gdbarch, mn10300_saved_pc_after_call); - set_gdbarch_deprecated_init_extra_frame_info (gdbarch, mn10300_init_extra_frame_info); - set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, mn10300_frame_init_saved_regs); - set_gdbarch_deprecated_frame_chain (gdbarch, mn10300_frame_chain); - set_gdbarch_deprecated_frame_saved_pc (gdbarch, mn10300_frame_saved_pc); - set_gdbarch_return_value (gdbarch, mn10300_return_value); - set_gdbarch_deprecated_store_struct_return (gdbarch, mn10300_store_struct_return); - set_gdbarch_deprecated_pop_frame (gdbarch, mn10300_pop_frame); - set_gdbarch_skip_prologue (gdbarch, mn10300_skip_prologue); - /* That's right, we're using the stack pointer as our frame pointer. */ - set_gdbarch_deprecated_target_read_fp (gdbarch, mn10300_read_fp); - - /* Calling functions in the inferior from GDB. */ - set_gdbarch_deprecated_push_arguments (gdbarch, mn10300_push_arguments); - set_gdbarch_deprecated_reg_struct_has_addr - (gdbarch, mn10300_reg_struct_has_addr); - set_gdbarch_deprecated_push_return_address (gdbarch, mn10300_push_return_address); - - tdep->am33_mode = am33_mode; + /* Breakpoints. */ + set_gdbarch_breakpoint_from_pc (gdbarch, mn10300_breakpoint_from_pc); + /* decr_pc_after_break? */ + /* Disassembly. */ + set_gdbarch_print_insn (gdbarch, print_insn_mn10300); - /* Should be using push_dummy_call. */ - set_gdbarch_deprecated_dummy_write_sp (gdbarch, deprecated_write_sp); + /* Stage 2 */ + /* MVS Note: at least the first one is deprecated! */ + set_gdbarch_deprecated_use_struct_convention (gdbarch, + mn10300_use_struct_convention); + set_gdbarch_store_return_value (gdbarch, mn10300_store_return_value); + set_gdbarch_extract_return_value (gdbarch, mn10300_extract_return_value); - set_gdbarch_print_insn (gdbarch, print_insn_mn10300); + mn10300_frame_unwind_init (gdbarch); return gdbarch; } @@ -1337,6 +500,6 @@ mn10300_gdbarch_init (struct gdbarch_info info, void _initialize_mn10300_tdep (void) { -/* printf("_initialize_mn10300_tdep\n"); */ - gdbarch_register (bfd_arch_mn10300, mn10300_gdbarch_init, mn10300_dump_tdep); + register_gdbarch_init (bfd_arch_mn10300, mn10300_gdbarch_init); } + -- 2.7.4