X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=gdb%2Fh8300-tdep.c;h=0f58553d955581152c20aff07e6f311b8782f3af;hb=fab39d55fa914ad1cea809848899c76c64eaab9d;hp=789d2a5ecd882812d6fd790d0ce71cf8f3d10257;hpb=e9a2674e1d04f307ae4ffb7e4571c9878f63ff66;p=platform%2Fupstream%2Fbinutils.git diff --git a/gdb/h8300-tdep.c b/gdb/h8300-tdep.c index 789d2a5..0f58553 100644 --- a/gdb/h8300-tdep.c +++ b/gdb/h8300-tdep.c @@ -1,13 +1,12 @@ -/* Target-machine dependent code for Hitachi H8/300, for GDB. +/* Target-machine dependent code for Renesas H8/300, for GDB. - Copyright 1988, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, - 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. + Copyright (C) 1988-2014 Free Software Foundation, Inc. This file is part of GDB. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or + the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, @@ -16,9 +15,7 @@ GNU General Public License for more details. You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ + along with this program. If not, see . */ /* Contributed by Steve Chamberlain @@ -27,37 +24,20 @@ #include "defs.h" #include "value.h" -#include "inferior.h" -#include "symfile.h" #include "arch-utils.h" #include "regcache.h" #include "gdbcore.h" #include "objfiles.h" -#include "gdbcmd.h" -#include "gdb_assert.h" - -/* Extra info which is saved in each frame_info. */ -struct frame_extra_info -{ - CORE_ADDR from_pc; - CORE_ADDR args_pointer; - CORE_ADDR locals_pointer; -}; - -#define E_NUM_REGS (h8300smode ? 14 : 13) - -enum -{ - h8300_reg_size = 2, - h8300h_reg_size = 4, - h8300_max_reg_size = 4, -}; -#define BINWORD (h8300hmode ? h8300h_reg_size : h8300_reg_size) +#include "dis-asm.h" +#include "dwarf2-frame.h" +#include "frame-base.h" +#include "frame-unwind.h" enum gdb_regnum { E_R0_REGNUM, E_ER0_REGNUM = E_R0_REGNUM, E_ARG0_REGNUM = E_R0_REGNUM, - E_R1_REGNUM, E_ER1_REGNUM = E_R1_REGNUM, + E_RET0_REGNUM = E_R0_REGNUM, + E_R1_REGNUM, E_ER1_REGNUM = E_R1_REGNUM, E_RET1_REGNUM = E_R1_REGNUM, E_R2_REGNUM, E_ER2_REGNUM = E_R2_REGNUM, E_ARGLAST_REGNUM = E_R2_REGNUM, E_R3_REGNUM, E_ER3_REGNUM = E_R3_REGNUM, E_R4_REGNUM, E_ER4_REGNUM = E_R4_REGNUM, @@ -69,509 +49,526 @@ enum gdb_regnum E_CYCLES_REGNUM, E_TICK_REGNUM, E_EXR_REGNUM = E_TICK_REGNUM, E_INST_REGNUM, E_TICKS_REGNUM = E_INST_REGNUM, - E_INSTS_REGNUM + E_INSTS_REGNUM, + E_MACH_REGNUM, + E_MACL_REGNUM, + E_SBR_REGNUM, + E_VBR_REGNUM }; -#define UNSIGNED_SHORT(X) ((X) & 0xffff) +#define H8300_MAX_NUM_REGS 18 -#define IS_PUSH(x) ((x & 0xfff0)==0x6df0) -#define IS_PUSH_FP(x) (x == 0x6df6) -#define IS_MOVE_FP(x) (x == 0x0d76 || x == 0x0ff6) -#define IS_MOV_SP_FP(x) (x == 0x0d76 || x == 0x0ff6) -#define IS_SUB2_SP(x) (x==0x1b87) -#define IS_SUB4_SP(x) (x==0x1b97) -#define IS_SUBL_SP(x) (x==0x7a37) -#define IS_MOVK_R5(x) (x==0x7905) -#define IS_SUB_R5SP(x) (x==0x1957) +#define E_PSEUDO_CCR_REGNUM(gdbarch) (gdbarch_num_regs (gdbarch)) +#define E_PSEUDO_EXR_REGNUM(gdbarch) (gdbarch_num_regs (gdbarch)+1) -/* If the instruction at PC is an argument register spill, return its - length. Otherwise, return zero. +struct h8300_frame_cache +{ + /* Base address. */ + CORE_ADDR base; + CORE_ADDR sp_offset; + CORE_ADDR pc; - An argument register spill is an instruction that moves an argument - from the register in which it was passed to the stack slot in which - it really lives. It is a byte, word, or longword move from an - argument register to a negative offset from the frame pointer. */ + /* Flag showing that a frame has been created in the prologue code. */ + int uses_fp; -static int -h8300_is_argument_spill (CORE_ADDR pc) -{ - int w = read_memory_unsigned_integer (pc, 2); + /* Saved registers. */ + CORE_ADDR saved_regs[H8300_MAX_NUM_REGS]; + CORE_ADDR saved_sp; +}; - if ((w & 0xfff0) == 0x6ee0 /* mov.b Rs,@(d:16,er6) */ - && 8 <= (w & 0xf) && (w & 0xf) <= 10) /* Rs is R0L, R1L, or R2L */ - { - int w2 = read_memory_integer (pc + 2, 2); +enum +{ + h8300_reg_size = 2, + h8300h_reg_size = 4, + h8300_max_reg_size = 4, +}; - /* ... and d:16 is negative. */ - if (w2 < 0) - return 4; - } - else if (w == 0x7860) - { - int w2 = read_memory_integer (pc + 2, 2); +static int is_h8300hmode (struct gdbarch *gdbarch); +static int is_h8300smode (struct gdbarch *gdbarch); +static int is_h8300sxmode (struct gdbarch *gdbarch); +static int is_h8300_normal_mode (struct gdbarch *gdbarch); - if ((w2 & 0xfff0) == 0x6aa0) /* mov.b Rs, @(d:24,er6) */ - { - LONGEST disp = read_memory_integer (pc + 4, 4); +#define BINWORD(gdbarch) ((is_h8300hmode (gdbarch) \ + && !is_h8300_normal_mode (gdbarch)) \ + ? h8300h_reg_size : h8300_reg_size) - /* ... and d:24 is negative. */ - if (disp < 0 && disp > 0xffffff) - return 8; - } - } - else if ((w & 0xfff0) == 0x6fe0 /* mov.w Rs,@(d:16,er6) */ - && (w & 0xf) <= 2) /* Rs is R0, R1, or R2 */ - { - int w2 = read_memory_integer (pc + 2, 2); +static CORE_ADDR +h8300_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame) +{ + return frame_unwind_register_unsigned (next_frame, E_PC_REGNUM); +} - /* ... and d:16 is negative. */ - if (w2 < 0) - return 4; - } - else if (w == 0x78e0) - { - int w2 = read_memory_integer (pc + 2, 2); +static CORE_ADDR +h8300_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame) +{ + return frame_unwind_register_unsigned (next_frame, E_SP_REGNUM); +} - if ((w2 & 0xfff0) == 0x6ba0) /* mov.b Rs, @(d:24,er6) */ - { - LONGEST disp = read_memory_integer (pc + 4, 4); +static struct frame_id +h8300_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame) +{ + CORE_ADDR sp = get_frame_register_unsigned (this_frame, E_SP_REGNUM); + return frame_id_build (sp, get_frame_pc (this_frame)); +} - /* ... and d:24 is negative. */ - if (disp < 0 && disp > 0xffffff) - return 8; - } - } - else if (w == 0x0100) - { - int w2 = read_memory_integer (pc + 2, 2); +/* Normal frames. */ - if ((w2 & 0xfff0) == 0x6fe0 /* mov.l Rs,@(d:16,er6) */ - && (w2 & 0xf) <= 2) /* Rs is ER0, ER1, or ER2 */ - { - int w3 = read_memory_integer (pc + 4, 2); +/* Allocate and initialize a frame cache. */ - /* ... and d:16 is negative. */ - if (w3 < 0) - return 6; - } - else if (w2 == 0x78e0) - { - int w3 = read_memory_integer (pc + 4, 2); +static void +h8300_init_frame_cache (struct gdbarch *gdbarch, + struct h8300_frame_cache *cache) +{ + int i; - if ((w3 & 0xfff0) == 0x6ba0) /* mov.l Rs, @(d:24,er6) */ - { - LONGEST disp = read_memory_integer (pc + 6, 4); + /* Base address. */ + cache->base = 0; + cache->sp_offset = 0; + cache->pc = 0; - /* ... and d:24 is negative. */ - if (disp < 0 && disp > 0xffffff) - return 10; - } - } - } + /* Frameless until proven otherwise. */ + cache->uses_fp = 0; - return 0; + /* Saved registers. We initialize these to -1 since zero is a valid + offset (that's where %fp is supposed to be stored). */ + for (i = 0; i < gdbarch_num_regs (gdbarch); i++) + cache->saved_regs[i] = -1; } -static CORE_ADDR -h8300_skip_prologue (CORE_ADDR start_pc) +#define IS_MOVB_RnRm(x) (((x) & 0xff88) == 0x0c88) +#define IS_MOVW_RnRm(x) (((x) & 0xff88) == 0x0d00) +#define IS_MOVL_RnRm(x) (((x) & 0xff88) == 0x0f80) +#define IS_MOVB_Rn16_SP(x) (((x) & 0xfff0) == 0x6ee0) +#define IS_MOVB_EXT(x) ((x) == 0x7860) +#define IS_MOVB_Rn24_SP(x) (((x) & 0xfff0) == 0x6aa0) +#define IS_MOVW_Rn16_SP(x) (((x) & 0xfff0) == 0x6fe0) +#define IS_MOVW_EXT(x) ((x) == 0x78e0) +#define IS_MOVW_Rn24_SP(x) (((x) & 0xfff0) == 0x6ba0) +/* Same instructions as mov.w, just prefixed with 0x0100. */ +#define IS_MOVL_PRE(x) ((x) == 0x0100) +#define IS_MOVL_Rn16_SP(x) (((x) & 0xfff0) == 0x6fe0) +#define IS_MOVL_EXT(x) ((x) == 0x78e0) +#define IS_MOVL_Rn24_SP(x) (((x) & 0xfff0) == 0x6ba0) + +#define IS_PUSHFP_MOVESPFP(x) ((x) == 0x6df60d76) +#define IS_PUSH_FP(x) ((x) == 0x01006df6) +#define IS_MOV_SP_FP(x) ((x) == 0x0ff6) +#define IS_SUB2_SP(x) ((x) == 0x1b87) +#define IS_SUB4_SP(x) ((x) == 0x1b97) +#define IS_ADD_IMM_SP(x) ((x) == 0x7a1f) +#define IS_SUB_IMM_SP(x) ((x) == 0x7a3f) +#define IS_SUBL4_SP(x) ((x) == 0x1acf) +#define IS_MOV_IMM_Rn(x) (((x) & 0xfff0) == 0x7905) +#define IS_SUB_RnSP(x) (((x) & 0xff0f) == 0x1907) +#define IS_ADD_RnSP(x) (((x) & 0xff0f) == 0x0907) +#define IS_PUSH(x) (((x) & 0xfff0) == 0x6df0) + +/* If the instruction at PC is an argument register spill, return its + length. Otherwise, return zero. + + An argument register spill is an instruction that moves an argument + from the register in which it was passed to the stack slot in which + it really lives. It is a byte, word, or longword move from an + argument register to a negative offset from the frame pointer. + + CV, 2003-06-16: Or, in optimized code or when the `register' qualifier + is used, it could be a byte, word or long move to registers r3-r5. */ + +static int +h8300_is_argument_spill (struct gdbarch *gdbarch, CORE_ADDR pc) { - short int w; - int adjust = 0; + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); + int w = read_memory_unsigned_integer (pc, 2, byte_order); + + if ((IS_MOVB_RnRm (w) || IS_MOVW_RnRm (w) || IS_MOVL_RnRm (w)) + && (w & 0x70) <= 0x20 /* Rs is R0, R1 or R2 */ + && (w & 0x7) >= 0x3 && (w & 0x7) <= 0x5) /* Rd is R3, R4 or R5 */ + return 2; - /* Skip past all push and stm insns. */ - while (1) + if (IS_MOVB_Rn16_SP (w) + && 8 <= (w & 0xf) && (w & 0xf) <= 10) /* Rs is R0L, R1L, or R2L */ + { + /* ... and d:16 is negative. */ + if (read_memory_integer (pc + 2, 2, byte_order) < 0) + return 4; + } + else if (IS_MOVB_EXT (w)) { - w = read_memory_unsigned_integer (start_pc, 2); - /* First look for push insns. */ - if (w == 0x0100 || w == 0x0110 || w == 0x0120 || w == 0x0130) + if (IS_MOVB_Rn24_SP (read_memory_unsigned_integer (pc + 2, + 2, byte_order))) { - w = read_memory_unsigned_integer (start_pc + 2, 2); - adjust = 2; - } + LONGEST disp = read_memory_integer (pc + 4, 4, byte_order); - if (IS_PUSH (w)) - { - start_pc += 2 + adjust; - w = read_memory_unsigned_integer (start_pc, 2); - continue; + /* ... and d:24 is negative. */ + if (disp < 0 && disp > 0xffffff) + return 8; } - adjust = 0; - break; } - - /* Skip past a move to FP, either word or long sized */ - w = read_memory_unsigned_integer (start_pc, 2); - if (w == 0x0100) + else if (IS_MOVW_Rn16_SP (w) + && (w & 0xf) <= 2) /* Rs is R0, R1, or R2 */ { - w = read_memory_unsigned_integer (start_pc + 2, 2); - adjust += 2; + /* ... and d:16 is negative. */ + if (read_memory_integer (pc + 2, 2, byte_order) < 0) + return 4; } - - if (IS_MOVE_FP (w)) + else if (IS_MOVW_EXT (w)) { - start_pc += 2 + adjust; - w = read_memory_unsigned_integer (start_pc, 2); - } + if (IS_MOVW_Rn24_SP (read_memory_unsigned_integer (pc + 2, + 2, byte_order))) + { + LONGEST disp = read_memory_integer (pc + 4, 4, byte_order); - /* Check for loading either a word constant into r5; - long versions are handled by the SUBL_SP below. */ - if (IS_MOVK_R5 (w)) - { - start_pc += 2; - w = read_memory_unsigned_integer (start_pc, 2); + /* ... and d:24 is negative. */ + if (disp < 0 && disp > 0xffffff) + return 8; + } } - - /* Now check for subtracting r5 from sp, word sized only. */ - if (IS_SUB_R5SP (w)) + else if (IS_MOVL_PRE (w)) { - start_pc += 2 + adjust; - w = read_memory_unsigned_integer (start_pc, 2); - } + int w2 = read_memory_integer (pc + 2, 2, byte_order); - /* Check for subs #2 and subs #4. */ - while (IS_SUB2_SP (w) || IS_SUB4_SP (w)) - { - start_pc += 2 + adjust; - w = read_memory_unsigned_integer (start_pc, 2); - } + if (IS_MOVL_Rn16_SP (w2) + && (w2 & 0xf) <= 2) /* Rs is ER0, ER1, or ER2 */ + { + /* ... and d:16 is negative. */ + if (read_memory_integer (pc + 4, 2, byte_order) < 0) + return 6; + } + else if (IS_MOVL_EXT (w2)) + { + int w3 = read_memory_integer (pc + 4, 2, byte_order); - /* Check for a 32bit subtract. */ - if (IS_SUBL_SP (w)) - start_pc += 6 + adjust; + if (IS_MOVL_Rn24_SP (read_memory_integer (pc + 4, 2, byte_order))) + { + LONGEST disp = read_memory_integer (pc + 6, 4, byte_order); - /* Check for spilling an argument register to the stack frame. - This could also be an initializing store from non-prologue code, - but I don't think there's any harm in skipping that. */ - for (;;) - { - int spill_size = h8300_is_argument_spill (start_pc); - if (spill_size == 0) - break; - start_pc += spill_size; + /* ... and d:24 is negative. */ + if (disp < 0 && disp > 0xffffff) + return 10; + } + } } - return start_pc; + return 0; } -static int -gdb_print_insn_h8300 (bfd_vma memaddr, disassemble_info * info) -{ - if (h8300smode) - return print_insn_h8300s (memaddr, info); - else if (h8300hmode) - return print_insn_h8300h (memaddr, info); - else - return print_insn_h8300 (memaddr, info); -} +/* Do a full analysis of the prologue at PC and update CACHE + accordingly. Bail out early if CURRENT_PC is reached. Return the + address where the analysis stopped. -/* Fetch the instruction at ADDR, returning 0 if ADDR is beyond LIM or - is not the address of a valid instruction, the address of the next - instruction beyond ADDR otherwise. *PWORD1 receives the first word - of the instruction. */ + We handle all cases that can be generated by gcc. -static CORE_ADDR -h8300_next_prologue_insn (CORE_ADDR addr, CORE_ADDR lim, unsigned short* pword1) -{ - char buf[2]; - if (addr < lim + 8) - { - read_memory (addr, buf, 2); - *pword1 = extract_signed_integer (buf, 2); + For allocating a stack frame: - return addr + 2; - } - return 0; -} + mov.w r6,@-sp + mov.w sp,r6 + mov.w #-n,rN + add.w rN,sp -/* Examine the prologue of a function. `ip' points to the first instruction. - `limit' is the limit of the prologue (e.g. the addr of the first - linenumber, or perhaps the program counter if we're stepping through). - `frame_sp' is the stack pointer value in use in this frame. - `fsr' is a pointer to a frame_saved_regs structure into which we put - info about the registers saved by this frame. - `fi' is a struct frame_info pointer; we fill in various fields in it - to reflect the offsets of the arg pointer and the locals pointer. */ - -/* Any function with a frame looks like this - SECOND ARG - FIRST ARG - RET PC - SAVED R2 - SAVED R3 - SAVED FP <-FP POINTS HERE - LOCALS0 - LOCALS1 <-SP POINTS HERE - */ + mov.w r6,@-sp + mov.w sp,r6 + subs #2,sp + (repeat) -static CORE_ADDR -h8300_examine_prologue (register CORE_ADDR ip, register CORE_ADDR limit, - CORE_ADDR after_prolog_fp, CORE_ADDR *fsr, - struct frame_info *fi) -{ - register CORE_ADDR next_ip; - int r; - int have_fp = 0; - unsigned short insn_word; - /* Number of things pushed onto stack, starts at 2/4, 'cause the - PC is already there */ - unsigned int reg_save_depth = BINWORD; + mov.l er6,@-sp + mov.l sp,er6 + add.l #-n,sp - unsigned int auto_depth = 0; /* Number of bytes of autos */ + mov.w r6,@-sp + mov.w sp,r6 + subs #4,sp + (repeat) - char in_frame[11]; /* One for each reg */ + For saving registers: - int adjust = 0; + mov.w rN,@-sp + mov.l erN,@-sp + stm.l reglist,@-sp - memset (in_frame, 1, 11); - for (r = 0; r < 8; r++) - { - fsr[r] = 0; - } - if (after_prolog_fp == 0) - { - after_prolog_fp = read_register (E_SP_REGNUM); - } - - /* If the PC isn't valid, quit now. */ - if (ip == 0 || ip & (h8300hmode ? ~0xffffff : ~0xffff)) - return 0; + */ - next_ip = h8300_next_prologue_insn (ip, limit, &insn_word); +static CORE_ADDR +h8300_analyze_prologue (struct gdbarch *gdbarch, + CORE_ADDR pc, CORE_ADDR current_pc, + struct h8300_frame_cache *cache) +{ + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); + unsigned int op; + int regno, i, spill_size; - if (insn_word == 0x0100) - { - insn_word = read_memory_unsigned_integer (ip + 2, 2); - adjust = 2; - } + cache->sp_offset = 0; - /* Skip over any fp push instructions */ - fsr[E_FP_REGNUM] = after_prolog_fp; - while (next_ip && IS_PUSH_FP (insn_word)) - { - ip = next_ip + adjust; + if (pc >= current_pc) + return current_pc; - in_frame[insn_word & 0x7] = reg_save_depth; - next_ip = h8300_next_prologue_insn (ip, limit, &insn_word); - reg_save_depth += 2 + adjust; - } + op = read_memory_unsigned_integer (pc, 4, byte_order); - /* Is this a move into the fp */ - if (next_ip && IS_MOV_SP_FP (insn_word)) + if (IS_PUSHFP_MOVESPFP (op)) { - ip = next_ip; - next_ip = h8300_next_prologue_insn (ip, limit, &insn_word); - have_fp = 1; + cache->saved_regs[E_FP_REGNUM] = 0; + cache->uses_fp = 1; + pc += 4; } - - /* Skip over any stack adjustment, happens either with a number of - sub#2,sp or a mov #x,r5 sub r5,sp */ - - if (next_ip && (IS_SUB2_SP (insn_word) || IS_SUB4_SP (insn_word))) + else if (IS_PUSH_FP (op)) { - while (next_ip && (IS_SUB2_SP (insn_word) || IS_SUB4_SP (insn_word))) + cache->saved_regs[E_FP_REGNUM] = 0; + pc += 4; + if (pc >= current_pc) + return current_pc; + op = read_memory_unsigned_integer (pc, 2, byte_order); + if (IS_MOV_SP_FP (op)) { - auto_depth += IS_SUB2_SP (insn_word) ? 2 : 4; - ip = next_ip; - next_ip = h8300_next_prologue_insn (ip, limit, &insn_word); + cache->uses_fp = 1; + pc += 2; } } - else + + while (pc < current_pc) { - if (next_ip && IS_MOVK_R5 (insn_word)) + op = read_memory_unsigned_integer (pc, 2, byte_order); + if (IS_SUB2_SP (op)) { - ip = next_ip; - next_ip = h8300_next_prologue_insn (ip, limit, &insn_word); - auto_depth += insn_word; - - next_ip = h8300_next_prologue_insn (next_ip, limit, &insn_word); - auto_depth += insn_word; + cache->sp_offset += 2; + pc += 2; } - if (next_ip && IS_SUBL_SP (insn_word)) + else if (IS_SUB4_SP (op)) { - ip = next_ip; - auto_depth += read_memory_unsigned_integer (ip, 4); - ip += 4; - - next_ip = h8300_next_prologue_insn (ip, limit, &insn_word); + cache->sp_offset += 4; + pc += 2; } - } - - /* Now examine the push insns to determine where everything lives - on the stack. */ - while (1) - { - adjust = 0; - if (!next_ip) - break; - - if (insn_word == 0x0100) + else if (IS_ADD_IMM_SP (op)) { - ip = next_ip; - next_ip = h8300_next_prologue_insn (ip, limit, &insn_word); - adjust = 2; + cache->sp_offset += -read_memory_integer (pc + 2, 2, byte_order); + pc += 4; } - - if (IS_PUSH (insn_word)) + else if (IS_SUB_IMM_SP (op)) { - auto_depth += 2 + adjust; - fsr[insn_word & 0x7] = after_prolog_fp - auto_depth; - ip = next_ip; - next_ip = h8300_next_prologue_insn (ip, limit, &insn_word); - continue; + cache->sp_offset += read_memory_integer (pc + 2, 2, byte_order); + pc += 4; } - - /* Now check for push multiple insns. */ - if (insn_word == 0x0110 || insn_word == 0x0120 || insn_word == 0x0130) + else if (IS_SUBL4_SP (op)) { - int count = ((insn_word >> 4) & 0xf) + 1; - int start, i; - - ip = next_ip; - next_ip = h8300_next_prologue_insn (ip, limit, &insn_word); - start = insn_word & 0x7; - - for (i = start; i < start + count; i++) + cache->sp_offset += 4; + pc += 2; + } + else if (IS_MOV_IMM_Rn (op)) + { + int offset = read_memory_integer (pc + 2, 2, byte_order); + regno = op & 0x000f; + op = read_memory_unsigned_integer (pc + 4, 2, byte_order); + if (IS_ADD_RnSP (op) && (op & 0x00f0) == regno) + { + cache->sp_offset -= offset; + pc += 6; + } + else if (IS_SUB_RnSP (op) && (op & 0x00f0) == regno) { - auto_depth += 4; - fsr[i] = after_prolog_fp - auto_depth; + cache->sp_offset += offset; + pc += 6; } + else + break; } - break; + else if (IS_PUSH (op)) + { + regno = op & 0x000f; + cache->sp_offset += 2; + cache->saved_regs[regno] = cache->sp_offset; + pc += 2; + } + else if (op == 0x0100) + { + op = read_memory_unsigned_integer (pc + 2, 2, byte_order); + if (IS_PUSH (op)) + { + regno = op & 0x000f; + cache->sp_offset += 4; + cache->saved_regs[regno] = cache->sp_offset; + pc += 4; + } + else + break; + } + else if ((op & 0xffcf) == 0x0100) + { + int op1; + op1 = read_memory_unsigned_integer (pc + 2, 2, byte_order); + if (IS_PUSH (op1)) + { + /* Since the prefix is 0x01x0, this is not a simple pushm but a + stm.l reglist,@-sp */ + i = ((op & 0x0030) >> 4) + 1; + regno = op1 & 0x000f; + for (; i > 0; regno++, --i) + { + cache->sp_offset += 4; + cache->saved_regs[regno] = cache->sp_offset; + } + pc += 4; + } + else + break; + } + else + break; } - /* The args are always reffed based from the stack pointer */ - get_frame_extra_info (fi)->args_pointer = after_prolog_fp; - /* Locals are always reffed based from the fp */ - get_frame_extra_info (fi)->locals_pointer = after_prolog_fp; - /* The PC is at a known place */ - get_frame_extra_info (fi)->from_pc = - read_memory_unsigned_integer (after_prolog_fp + BINWORD, BINWORD); - - /* Rememeber any others too */ - in_frame[E_PC_REGNUM] = 0; - - if (have_fp) - /* We keep the old FP in the SP spot */ - fsr[E_SP_REGNUM] = read_memory_unsigned_integer (fsr[E_FP_REGNUM], BINWORD); - else - fsr[E_SP_REGNUM] = after_prolog_fp + auto_depth; + /* Check for spilling an argument register to the stack frame. + This could also be an initializing store from non-prologue code, + but I don't think there's any harm in skipping that. */ + while ((spill_size = h8300_is_argument_spill (gdbarch, pc)) > 0 + && pc + spill_size <= current_pc) + pc += spill_size; - return (ip); + return pc; } -static void -h8300_frame_init_saved_regs (struct frame_info *fi) +static struct h8300_frame_cache * +h8300_frame_cache (struct frame_info *this_frame, void **this_cache) { - CORE_ADDR func_addr, func_end; + struct gdbarch *gdbarch = get_frame_arch (this_frame); + struct h8300_frame_cache *cache; + int i; + CORE_ADDR current_pc; - if (!get_frame_saved_regs (fi)) - { - frame_saved_regs_zalloc (fi); + if (*this_cache) + return *this_cache; - /* Find the beginning of this function, so we can analyze its - prologue. */ - if (find_pc_partial_function (get_frame_pc (fi), NULL, &func_addr, &func_end)) - { - struct symtab_and_line sal = find_pc_line (func_addr, 0); - CORE_ADDR limit = (sal.end && sal.end < get_frame_pc (fi)) ? sal.end : get_frame_pc (fi); - /* This will fill in fields in fi. */ - h8300_examine_prologue (func_addr, limit, get_frame_base (fi), - get_frame_saved_regs (fi), fi); - } - /* Else we're out of luck (can't debug completely stripped code). - FIXME. */ - } -} + cache = FRAME_OBSTACK_ZALLOC (struct h8300_frame_cache); + h8300_init_frame_cache (gdbarch, cache); + *this_cache = cache; -/* Given a GDB frame, determine the address of the calling function's - frame. This will be used to create a new GDB frame struct, and - then DEPRECATED_INIT_EXTRA_FRAME_INFO and DEPRECATED_INIT_FRAME_PC - will be called for the new frame. + /* In principle, for normal frames, %fp holds the frame pointer, + which holds the base address for the current stack frame. + However, for functions that don't need it, the frame pointer is + optional. For these "frameless" functions the frame pointer is + actually the frame pointer of the calling frame. */ - For us, the frame address is its stack pointer value, so we look up - the function prologue to determine the caller's sp value, and return it. */ + cache->base = get_frame_register_unsigned (this_frame, E_FP_REGNUM); + if (cache->base == 0) + return cache; -static CORE_ADDR -h8300_frame_chain (struct frame_info *thisframe) -{ - if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (thisframe), - get_frame_base (thisframe), - get_frame_base (thisframe))) - { /* initialize the from_pc now */ - get_frame_extra_info (thisframe)->from_pc = - deprecated_read_register_dummy (get_frame_pc (thisframe), - get_frame_base (thisframe), - E_PC_REGNUM); - return get_frame_base (thisframe); + cache->saved_regs[E_PC_REGNUM] = -BINWORD (gdbarch); + + cache->pc = get_frame_func (this_frame); + current_pc = get_frame_pc (this_frame); + if (cache->pc != 0) + h8300_analyze_prologue (gdbarch, cache->pc, current_pc, cache); + + if (!cache->uses_fp) + { + /* We didn't find a valid frame, which means that CACHE->base + currently holds the frame pointer for our calling frame. If + we're at the start of a function, or somewhere half-way its + prologue, the function's frame probably hasn't been fully + setup yet. Try to reconstruct the base address for the stack + frame by looking at the stack pointer. For truly "frameless" + functions this might work too. */ + + cache->base = get_frame_register_unsigned (this_frame, E_SP_REGNUM) + + cache->sp_offset; + cache->saved_sp = cache->base + BINWORD (gdbarch); + cache->saved_regs[E_PC_REGNUM] = 0; + } + else + { + cache->saved_sp = cache->base + 2 * BINWORD (gdbarch); + cache->saved_regs[E_PC_REGNUM] = -BINWORD (gdbarch); } - return get_frame_saved_regs (thisframe)[E_SP_REGNUM]; -} -/* Return the saved PC from this frame. + /* Adjust all the saved registers such that they contain addresses + instead of offsets. */ + for (i = 0; i < gdbarch_num_regs (gdbarch); i++) + if (cache->saved_regs[i] != -1) + cache->saved_regs[i] = cache->base - cache->saved_regs[i]; - If the frame has a memory copy of SRP_REGNUM, use that. If not, - just use the register SRP_REGNUM itself. */ + return cache; +} -static CORE_ADDR -h8300_frame_saved_pc (struct frame_info *frame) +static void +h8300_frame_this_id (struct frame_info *this_frame, void **this_cache, + struct frame_id *this_id) { - if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (frame), - get_frame_base (frame), - get_frame_base (frame))) - return deprecated_read_register_dummy (get_frame_pc (frame), - get_frame_base (frame), - E_PC_REGNUM); - else - return get_frame_extra_info (frame)->from_pc; + struct h8300_frame_cache *cache = + h8300_frame_cache (this_frame, this_cache); + + /* This marks the outermost frame. */ + if (cache->base == 0) + return; + + *this_id = frame_id_build (cache->saved_sp, cache->pc); } -static void -h8300_init_extra_frame_info (int fromleaf, struct frame_info *fi) +static struct value * +h8300_frame_prev_register (struct frame_info *this_frame, void **this_cache, + int regnum) { - if (!get_frame_extra_info (fi)) - { - frame_extra_info_zalloc (fi, sizeof (struct frame_extra_info)); - get_frame_extra_info (fi)->from_pc = 0; - get_frame_extra_info (fi)->args_pointer = 0; /* Unknown */ - get_frame_extra_info (fi)->locals_pointer = 0; /* Unknown */ - - if (!get_frame_pc (fi)) - { - if (get_next_frame (fi)) - deprecated_update_frame_pc_hack (fi, h8300_frame_saved_pc (get_next_frame (fi))); - } - h8300_frame_init_saved_regs (fi); - } + struct gdbarch *gdbarch = get_frame_arch (this_frame); + struct h8300_frame_cache *cache = + h8300_frame_cache (this_frame, this_cache); + + gdb_assert (regnum >= 0); + + if (regnum == E_SP_REGNUM && cache->saved_sp) + return frame_unwind_got_constant (this_frame, regnum, cache->saved_sp); + + if (regnum < gdbarch_num_regs (gdbarch) + && cache->saved_regs[regnum] != -1) + return frame_unwind_got_memory (this_frame, regnum, + cache->saved_regs[regnum]); + + return frame_unwind_got_register (this_frame, regnum, regnum); } +static const struct frame_unwind h8300_frame_unwind = { + NORMAL_FRAME, + default_frame_unwind_stop_reason, + h8300_frame_this_id, + h8300_frame_prev_register, + NULL, + default_frame_sniffer +}; + static CORE_ADDR -h8300_frame_locals_address (struct frame_info *fi) +h8300_frame_base_address (struct frame_info *this_frame, void **this_cache) { - if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi), get_frame_base (fi), - get_frame_base (fi))) - return (CORE_ADDR) 0; /* Not sure what else to do... */ - return get_frame_extra_info (fi)->locals_pointer; + struct h8300_frame_cache *cache = h8300_frame_cache (this_frame, this_cache); + return cache->base; } -/* Return the address of the argument block for the frame - described by FI. Returns 0 if the address is unknown. */ +static const struct frame_base h8300_frame_base = { + &h8300_frame_unwind, + h8300_frame_base_address, + h8300_frame_base_address, + h8300_frame_base_address +}; static CORE_ADDR -h8300_frame_args_address (struct frame_info *fi) +h8300_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc) { - if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi), get_frame_base (fi), - get_frame_base (fi))) - return (CORE_ADDR) 0; /* Not sure what else to do... */ - return get_frame_extra_info (fi)->args_pointer; -} + CORE_ADDR func_addr = 0 , func_end = 0; + + if (find_pc_partial_function (pc, NULL, &func_addr, &func_end)) + { + struct symtab_and_line sal; + struct h8300_frame_cache cache; + + /* Found a function. */ + sal = find_pc_line (func_addr, 0); + if (sal.end && sal.end < func_end) + /* Found a line number, use it as end of prologue. */ + return sal.end; + + /* No useable line symbol. Use prologue parsing method. */ + h8300_init_frame_cache (gdbarch, &cache); + return h8300_analyze_prologue (gdbarch, func_addr, func_end, &cache); + } -/* Round N up or down to the nearest multiple of UNIT. - Evaluate N only once, UNIT several times. - UNIT must be a power of two. */ -#define round_up(n, unit) (((n) + (unit) - 1) & -(unit)) -#define round_down(n, unit) ((n) & -(unit)) + /* No function symbol -- just return the PC. */ + return (CORE_ADDR) pc; +} -/* Function: push_arguments +/* Function: push_dummy_call Setup the function arguments for calling a function in the inferior. In this discussion, a `word' is 16 bits on the H8/300s, and 32 bits on the H8/300H. @@ -636,241 +633,376 @@ h8300_frame_args_address (struct frame_info *fi) to begin with. */ static CORE_ADDR -h8300_push_arguments (int nargs, struct value **args, CORE_ADDR sp, - int struct_return, CORE_ADDR struct_addr) +h8300_push_dummy_call (struct gdbarch *gdbarch, struct value *function, + struct regcache *regcache, CORE_ADDR bp_addr, + int nargs, struct value **args, CORE_ADDR sp, + int struct_return, CORE_ADDR struct_addr) { - int stack_align, stack_alloc, stack_offset; - int wordsize = BINWORD; - int reg; + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); + int stack_alloc = 0, stack_offset = 0; + int wordsize = BINWORD (gdbarch); + int reg = E_ARG0_REGNUM; int argument; /* First, make sure the stack is properly aligned. */ - sp = round_down (sp, wordsize); + sp = align_down (sp, wordsize); /* Now make sure there's space on the stack for the arguments. We may over-allocate a little here, but that won't hurt anything. */ - stack_alloc = 0; for (argument = 0; argument < nargs; argument++) - stack_alloc += round_up (TYPE_LENGTH (VALUE_TYPE (args[argument])), - wordsize); + stack_alloc += align_up (TYPE_LENGTH (value_type (args[argument])), + wordsize); sp -= stack_alloc; /* Now load as many arguments as possible into registers, and push - the rest onto the stack. */ - reg = E_ARG0_REGNUM; - stack_offset = 0; - - /* If we're returning a structure by value, then we must pass a + the rest onto the stack. + If we're returning a structure by value, then we must pass a pointer to the buffer for the return value as an invisible first argument. */ if (struct_return) - write_register (reg++, struct_addr); + regcache_cooked_write_unsigned (regcache, reg++, struct_addr); for (argument = 0; argument < nargs; argument++) { - struct type *type = VALUE_TYPE (args[argument]); + struct cleanup *back_to; + struct type *type = value_type (args[argument]); int len = TYPE_LENGTH (type); - char *contents = (char *) VALUE_CONTENTS (args[argument]); + char *contents = (char *) value_contents (args[argument]); /* Pad the argument appropriately. */ - int padded_len = round_up (len, wordsize); - char *padded = alloca (padded_len); + int padded_len = align_up (len, wordsize); + gdb_byte *padded = xmalloc (padded_len); + back_to = make_cleanup (xfree, padded); memset (padded, 0, padded_len); memcpy (len < wordsize ? padded + padded_len - len : padded, - contents, len); + contents, len); /* Could the argument fit in the remaining registers? */ if (padded_len <= (E_ARGLAST_REGNUM - reg + 1) * wordsize) - { - /* Are we going to pass it on the stack anyway, for no good - reason? */ - if (len > wordsize && len % wordsize) - { - /* I feel so unclean. */ - write_memory (sp + stack_offset, padded, padded_len); - stack_offset += padded_len; - - /* That's right --- even though we passed the argument - on the stack, we consume the registers anyway! Love - me, love my dog. */ - reg += padded_len / wordsize; - } - else - { - /* Heavens to Betsy --- it's really going in registers! - It would be nice if we could use write_register_bytes - here, but on the h8/300s, there are gaps between - the registers in the register file. */ - int offset; - - for (offset = 0; offset < padded_len; offset += wordsize) - { - ULONGEST word = extract_address (padded + offset, wordsize); - write_register (reg++, word); - } - } - } + { + /* Are we going to pass it on the stack anyway, for no good + reason? */ + if (len > wordsize && len % wordsize) + { + /* I feel so unclean. */ + write_memory (sp + stack_offset, padded, padded_len); + stack_offset += padded_len; + + /* That's right --- even though we passed the argument + on the stack, we consume the registers anyway! Love + me, love my dog. */ + reg += padded_len / wordsize; + } + else + { + /* Heavens to Betsy --- it's really going in registers! + Note that on the h8/300s, there are gaps between the + registers in the register file. */ + int offset; + + for (offset = 0; offset < padded_len; offset += wordsize) + { + ULONGEST word + = extract_unsigned_integer (padded + offset, + wordsize, byte_order); + regcache_cooked_write_unsigned (regcache, reg++, word); + } + } + } else - { - /* It doesn't fit in registers! Onto the stack it goes. */ - write_memory (sp + stack_offset, padded, padded_len); - stack_offset += padded_len; - - /* Once one argument has spilled onto the stack, all - subsequent arguments go on the stack. */ - reg = E_ARGLAST_REGNUM + 1; - } - } - - return sp; -} + { + /* It doesn't fit in registers! Onto the stack it goes. */ + write_memory (sp + stack_offset, padded, padded_len); + stack_offset += padded_len; -/* Function: push_return_address - Setup the return address for a dummy frame, as called by - call_function_by_hand. Only necessary when you are using an - empty CALL_DUMMY, ie. the target will not actually be executing - a JSR/BSR instruction. */ + /* Once one argument has spilled onto the stack, all + subsequent arguments go on the stack. */ + reg = E_ARGLAST_REGNUM + 1; + } -static CORE_ADDR -h8300_push_return_address (CORE_ADDR pc, CORE_ADDR sp) -{ - unsigned char buf[4]; - int wordsize = BINWORD; + do_cleanups (back_to); + } + /* Store return address. */ sp -= wordsize; - store_unsigned_integer (buf, wordsize, CALL_DUMMY_ADDRESS ()); - write_memory (sp, buf, wordsize); - return sp; + write_memory_unsigned_integer (sp, wordsize, byte_order, bp_addr); + + /* Update stack pointer. */ + regcache_cooked_write_unsigned (regcache, E_SP_REGNUM, sp); + + /* Return the new stack pointer minus the return address slot since + that's what DWARF2/GCC uses as the frame's CFA. */ + return sp + wordsize; } -/* Function: h8300_pop_frame - Restore the machine to the state it had before the current frame - was created. Usually used either by the "RETURN" command, or by - call_function_by_hand after the dummy_frame is finished. */ +/* Function: extract_return_value + Figure out where in REGBUF the called function has left its return value. + Copy that into VALBUF. Be sure to account for CPU type. */ static void -h8300_pop_frame (void) +h8300_extract_return_value (struct type *type, struct regcache *regcache, + void *valbuf) { - unsigned regno; - struct frame_info *frame = get_current_frame (); + struct gdbarch *gdbarch = get_regcache_arch (regcache); + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); + int len = TYPE_LENGTH (type); + ULONGEST c, addr; - if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (frame), - get_frame_base (frame), - get_frame_base (frame))) - { - generic_pop_dummy_frame (); - } - else + switch (len) { - for (regno = 0; regno < 8; regno++) + case 1: + case 2: + regcache_cooked_read_unsigned (regcache, E_RET0_REGNUM, &c); + store_unsigned_integer (valbuf, len, byte_order, c); + break; + case 4: /* Needs two registers on plain H8/300 */ + regcache_cooked_read_unsigned (regcache, E_RET0_REGNUM, &c); + store_unsigned_integer (valbuf, 2, byte_order, c); + regcache_cooked_read_unsigned (regcache, E_RET1_REGNUM, &c); + store_unsigned_integer ((void *)((char *) valbuf + 2), 2, byte_order, c); + break; + case 8: /* long long is now 8 bytes. */ + if (TYPE_CODE (type) == TYPE_CODE_INT) { - /* Don't forget E_SP_REGNUM is a frame_saved_regs struct is the - actual value we want, not the address of the value we want. */ - if (get_frame_saved_regs (frame)[regno] && regno != E_SP_REGNUM) - write_register (regno, - read_memory_integer (get_frame_saved_regs (frame)[regno], - BINWORD)); - else if (get_frame_saved_regs (frame)[regno] && regno == E_SP_REGNUM) - write_register (regno, get_frame_base (frame) + 2 * BINWORD); + regcache_cooked_read_unsigned (regcache, E_RET0_REGNUM, &addr); + c = read_memory_unsigned_integer ((CORE_ADDR) addr, len, byte_order); + store_unsigned_integer (valbuf, len, byte_order, c); } - - /* Don't forget to update the PC too! */ - write_register (E_PC_REGNUM, get_frame_extra_info (frame)->from_pc); + else + { + error (_("I don't know how this 8 byte value is returned.")); + } + break; } - flush_cached_frames (); } -/* Function: extract_return_value - Figure out where in REGBUF the called function has left its return value. - Copy that into VALBUF. Be sure to account for CPU type. */ - static void -h8300_extract_return_value (struct type *type, char *regbuf, char *valbuf) +h8300h_extract_return_value (struct type *type, struct regcache *regcache, + void *valbuf) { - int wordsize = BINWORD; - int len = TYPE_LENGTH (type); + struct gdbarch *gdbarch = get_regcache_arch (regcache); + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); + ULONGEST c; - switch (len) + switch (TYPE_LENGTH (type)) { - case 1: /* (char) */ - case 2: /* (short), (int) */ - memcpy (valbuf, regbuf + REGISTER_BYTE (0) + (wordsize - len), len); + case 1: + case 2: + case 4: + regcache_cooked_read_unsigned (regcache, E_RET0_REGNUM, &c); + store_unsigned_integer (valbuf, TYPE_LENGTH (type), byte_order, c); break; - case 4: /* (long), (float) */ - if (wordsize == 4) + case 8: /* long long is now 8 bytes. */ + if (TYPE_CODE (type) == TYPE_CODE_INT) { - memcpy (valbuf, regbuf + REGISTER_BYTE (0), 4); + regcache_cooked_read_unsigned (regcache, E_RET0_REGNUM, &c); + store_unsigned_integer (valbuf, 4, byte_order, c); + regcache_cooked_read_unsigned (regcache, E_RET1_REGNUM, &c); + store_unsigned_integer ((void *) ((char *) valbuf + 4), 4, + byte_order, c); } else { - memcpy (valbuf, regbuf + REGISTER_BYTE (0), 2); - memcpy (valbuf + 2, regbuf + REGISTER_BYTE (1), 2); + error (_("I don't know how this 8 byte value is returned.")); } break; - case 8: /* (double) (doesn't seem to happen, which is good, - because this almost certainly isn't right. */ - error ("I don't know how a double is returned."); - break; } } +static int +h8300_use_struct_convention (struct type *value_type) +{ + /* Types of 1, 2 or 4 bytes are returned in R0/R1, everything else on the + stack. */ + + if (TYPE_CODE (value_type) == TYPE_CODE_STRUCT + || TYPE_CODE (value_type) == TYPE_CODE_UNION) + return 1; + return !(TYPE_LENGTH (value_type) == 1 + || TYPE_LENGTH (value_type) == 2 + || TYPE_LENGTH (value_type) == 4); +} + +static int +h8300h_use_struct_convention (struct type *value_type) +{ + /* Types of 1, 2 or 4 bytes are returned in R0, INT types of 8 bytes are + returned in R0/R1, everything else on the stack. */ + if (TYPE_CODE (value_type) == TYPE_CODE_STRUCT + || TYPE_CODE (value_type) == TYPE_CODE_UNION) + return 1; + return !(TYPE_LENGTH (value_type) == 1 + || TYPE_LENGTH (value_type) == 2 + || TYPE_LENGTH (value_type) == 4 + || (TYPE_LENGTH (value_type) == 8 + && TYPE_CODE (value_type) == TYPE_CODE_INT)); +} + /* Function: store_return_value Place the appropriate value in the appropriate registers. Primarily used by the RETURN command. */ static void -h8300_store_return_value (struct type *type, char *valbuf) +h8300_store_return_value (struct type *type, struct regcache *regcache, + const void *valbuf) { - int regval; - int wordsize = BINWORD; - int len = TYPE_LENGTH (type); + struct gdbarch *gdbarch = get_regcache_arch (regcache); + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); + ULONGEST val; - switch (len) + switch (TYPE_LENGTH (type)) { - case 1: /* char */ - case 2: /* short, int */ - regval = extract_address (valbuf, len); - write_register (0, regval); + case 1: + case 2: /* short... */ + val = extract_unsigned_integer (valbuf, TYPE_LENGTH (type), byte_order); + regcache_cooked_write_unsigned (regcache, E_RET0_REGNUM, val); break; case 4: /* long, float */ - regval = extract_address (valbuf, len); - if (wordsize == 4) - { - write_register (0, regval); - } - else - { - write_register (0, regval >> 16); - write_register (1, regval & 0xffff); - } + val = extract_unsigned_integer (valbuf, TYPE_LENGTH (type), byte_order); + regcache_cooked_write_unsigned (regcache, E_RET0_REGNUM, + (val >> 16) & 0xffff); + regcache_cooked_write_unsigned (regcache, E_RET1_REGNUM, val & 0xffff); break; - case 8: /* presumeably double, but doesn't seem to happen */ - error ("I don't know how to return a double."); + case 8: /* long long, double and long double + are all defined as 4 byte types so + far so this shouldn't happen. */ + error (_("I don't know how to return an 8 byte value.")); break; } } -static struct cmd_list_element *setmachinelist; +static void +h8300h_store_return_value (struct type *type, struct regcache *regcache, + const void *valbuf) +{ + struct gdbarch *gdbarch = get_regcache_arch (regcache); + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); + ULONGEST val; + + switch (TYPE_LENGTH (type)) + { + case 1: + case 2: + case 4: /* long, float */ + val = extract_unsigned_integer (valbuf, TYPE_LENGTH (type), byte_order); + regcache_cooked_write_unsigned (regcache, E_RET0_REGNUM, val); + break; + case 8: + val = extract_unsigned_integer (valbuf, TYPE_LENGTH (type), byte_order); + regcache_cooked_write_unsigned (regcache, E_RET0_REGNUM, + (val >> 32) & 0xffffffff); + regcache_cooked_write_unsigned (regcache, E_RET1_REGNUM, + val & 0xffffffff); + break; + } +} + +static enum return_value_convention +h8300_return_value (struct gdbarch *gdbarch, struct value *function, + struct type *type, struct regcache *regcache, + gdb_byte *readbuf, const gdb_byte *writebuf) +{ + if (h8300_use_struct_convention (type)) + return RETURN_VALUE_STRUCT_CONVENTION; + if (writebuf) + h8300_store_return_value (type, regcache, writebuf); + else if (readbuf) + h8300_extract_return_value (type, regcache, readbuf); + return RETURN_VALUE_REGISTER_CONVENTION; +} + +static enum return_value_convention +h8300h_return_value (struct gdbarch *gdbarch, struct value *function, + struct type *type, struct regcache *regcache, + gdb_byte *readbuf, const gdb_byte *writebuf) +{ + if (h8300h_use_struct_convention (type)) + { + if (readbuf) + { + ULONGEST addr; + + regcache_raw_read_unsigned (regcache, E_R0_REGNUM, &addr); + read_memory (addr, readbuf, TYPE_LENGTH (type)); + } + + return RETURN_VALUE_ABI_RETURNS_ADDRESS; + } + if (writebuf) + h8300h_store_return_value (type, regcache, writebuf); + else if (readbuf) + h8300h_extract_return_value (type, regcache, readbuf); + return RETURN_VALUE_REGISTER_CONVENTION; +} + +/* Implementation of 'register_sim_regno' gdbarch method. */ + +static int +h8300_register_sim_regno (struct gdbarch *gdbarch, int regnum) +{ + /* Only makes sense to supply raw registers. */ + gdb_assert (regnum >= 0 && regnum < gdbarch_num_regs (gdbarch)); + + /* We hide the raw ccr from the user by making it nameless. Because + the default register_sim_regno hook returns + LEGACY_SIM_REGNO_IGNORE for unnamed registers, we need to + override it. The sim register numbering is compatible with + gdb's. */ + return regnum; +} static const char * -h8300_register_name (int regno) +h8300_register_name (struct gdbarch *gdbarch, int regno) { - /* The register names change depending on whether the h8300h processor - type is selected. */ - static char *h8300_register_names[] = { + /* The register names change depending on which h8300 processor + type is selected. */ + static char *register_names[] = { "r0", "r1", "r2", "r3", "r4", "r5", "r6", - "sp", "ccr","pc","cycles", "tick", "inst", "" + "sp", "", "pc", "cycles", "tick", "inst", + "ccr", /* pseudo register */ }; - static char *h8300s_register_names[] = { + if (regno < 0 + || regno >= (sizeof (register_names) / sizeof (*register_names))) + internal_error (__FILE__, __LINE__, + _("h8300_register_name: illegal register number %d"), + regno); + else + return register_names[regno]; +} + +static const char * +h8300s_register_name (struct gdbarch *gdbarch, int regno) +{ + static char *register_names[] = { "er0", "er1", "er2", "er3", "er4", "er5", "er6", - "sp", "ccr", "pc", "cycles", "exr", "tick", "inst" + "sp", "", "pc", "cycles", "", "tick", "inst", + "mach", "macl", + "ccr", "exr" /* pseudo registers */ }; - char **register_names = - h8300smode ? h8300s_register_names : h8300_register_names; - if (regno < 0 || regno >= E_NUM_REGS) + if (regno < 0 + || regno >= (sizeof (register_names) / sizeof (*register_names))) internal_error (__FILE__, __LINE__, - "h8300_register_name: illegal register number %d", regno); + _("h8300s_register_name: illegal register number %d"), + regno); + else + return register_names[regno]; +} + +static const char * +h8300sx_register_name (struct gdbarch *gdbarch, int regno) +{ + static char *register_names[] = { + "er0", "er1", "er2", "er3", "er4", "er5", "er6", + "sp", "", "pc", "cycles", "", "tick", "inst", + "mach", "macl", "sbr", "vbr", + "ccr", "exr" /* pseudo registers */ + }; + if (regno < 0 + || regno >= (sizeof (register_names) / sizeof (*register_names))) + internal_error (__FILE__, __LINE__, + _("h8300sx_register_name: illegal register number %d"), + regno); else return register_names[regno]; } @@ -879,44 +1011,32 @@ static void h8300_print_register (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, int regno) { - ULONGEST rval; - long val; - const char *name = h8300_register_name (regno); + LONGEST rval; + const char *name = gdbarch_register_name (gdbarch, regno); if (!name || !*name) return; - /* FIXME: cagney/2002-10-22: The code below assumes that VAL is at - least 4 bytes (32 bits) in size and hence is large enough to hold - the largest h8300 register. Should instead be using ULONGEST and - the phex() functions. */ - gdb_assert (sizeof (val) >= 4); - frame_read_unsigned_register (frame, regno, &rval); - val = rval; + rval = get_frame_register_signed (frame, regno); fprintf_filtered (file, "%-14s ", name); - if (h8300hmode) + if ((regno == E_PSEUDO_CCR_REGNUM (gdbarch)) || \ + (regno == E_PSEUDO_EXR_REGNUM (gdbarch) && is_h8300smode (gdbarch))) { - if (val) - fprintf_filtered (file, "0x%08lx %-8ld", val, val); - else - fprintf_filtered (file, "0x%-8lx %-8ld", val, val); + fprintf_filtered (file, "0x%02x ", (unsigned char) rval); + print_longest (file, 'u', 1, rval); } else { - if (val) - fprintf_filtered (file, "0x%04lx %-4ld", val, val); - else - fprintf_filtered (file, "0x%-4lx %-4ld", val, val); + fprintf_filtered (file, "0x%s ", phex ((ULONGEST) rval, + BINWORD (gdbarch))); + print_longest (file, 'd', 1, rval); } - if (regno == E_CCR_REGNUM) + if (regno == E_PSEUDO_CCR_REGNUM (gdbarch)) { /* CCR register */ int C, Z, N, V; - unsigned char b[h8300h_reg_size]; - unsigned char l; - frame_register_read (deprecated_selected_frame, regno, b); - l = b[REGISTER_VIRTUAL_SIZE (E_CCR_REGNUM) - 1]; + unsigned char l = rval & 0xff; fprintf_filtered (file, "\t"); fprintf_filtered (file, "I-%d ", (l & 0x80) != 0); fprintf_filtered (file, "UI-%d ", (l & 0x40) != 0); @@ -951,13 +1071,10 @@ h8300_print_register (struct gdbarch *gdbarch, struct ui_file *file, if ((Z | (N ^ V)) == 1) fprintf_filtered (file, "<= "); } - else if (regno == E_EXR_REGNUM && h8300smode) + else if (regno == E_PSEUDO_EXR_REGNUM (gdbarch) && is_h8300smode (gdbarch)) { /* EXR register */ - unsigned char b[h8300h_reg_size]; - unsigned char l; - frame_register_read (deprecated_selected_frame, regno, b); - l = b[REGISTER_VIRTUAL_SIZE (E_EXR_REGNUM) - 1]; + unsigned char l = rval & 0xff; fprintf_filtered (file, "\t"); fprintf_filtered (file, "T-%d - - - ", (l & 0x80) != 0); fprintf_filtered (file, "I2-%d ", (l & 4) != 0); @@ -972,75 +1089,168 @@ h8300_print_registers_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, int regno, int cpregs) { if (regno < 0) - for (regno = 0; regno < E_NUM_REGS; ++regno) - h8300_print_register (gdbarch, file, frame, regno); + { + for (regno = E_R0_REGNUM; regno <= E_SP_REGNUM; ++regno) + h8300_print_register (gdbarch, file, frame, regno); + h8300_print_register (gdbarch, file, frame, + E_PSEUDO_CCR_REGNUM (gdbarch)); + h8300_print_register (gdbarch, file, frame, E_PC_REGNUM); + if (is_h8300smode (gdbarch)) + { + h8300_print_register (gdbarch, file, frame, + E_PSEUDO_EXR_REGNUM (gdbarch)); + if (is_h8300sxmode (gdbarch)) + { + h8300_print_register (gdbarch, file, frame, E_SBR_REGNUM); + h8300_print_register (gdbarch, file, frame, E_VBR_REGNUM); + } + h8300_print_register (gdbarch, file, frame, E_MACH_REGNUM); + h8300_print_register (gdbarch, file, frame, E_MACL_REGNUM); + h8300_print_register (gdbarch, file, frame, E_CYCLES_REGNUM); + h8300_print_register (gdbarch, file, frame, E_TICKS_REGNUM); + h8300_print_register (gdbarch, file, frame, E_INSTS_REGNUM); + } + else + { + h8300_print_register (gdbarch, file, frame, E_CYCLES_REGNUM); + h8300_print_register (gdbarch, file, frame, E_TICK_REGNUM); + h8300_print_register (gdbarch, file, frame, E_INST_REGNUM); + } + } else - h8300_print_register (gdbarch, file, frame, regno); + { + if (regno == E_CCR_REGNUM) + h8300_print_register (gdbarch, file, frame, + E_PSEUDO_CCR_REGNUM (gdbarch)); + else if (regno == E_PSEUDO_EXR_REGNUM (gdbarch) + && is_h8300smode (gdbarch)) + h8300_print_register (gdbarch, file, frame, + E_PSEUDO_EXR_REGNUM (gdbarch)); + else + h8300_print_register (gdbarch, file, frame, regno); + } } -static CORE_ADDR -h8300_saved_pc_after_call (struct frame_info *ignore) +static struct type * +h8300_register_type (struct gdbarch *gdbarch, int regno) { - return read_memory_unsigned_integer (read_register (E_SP_REGNUM), BINWORD); + if (regno < 0 || regno >= gdbarch_num_regs (gdbarch) + + gdbarch_num_pseudo_regs (gdbarch)) + internal_error (__FILE__, __LINE__, + _("h8300_register_type: illegal register number %d"), + regno); + else + { + switch (regno) + { + case E_PC_REGNUM: + return builtin_type (gdbarch)->builtin_func_ptr; + case E_SP_REGNUM: + case E_FP_REGNUM: + return builtin_type (gdbarch)->builtin_data_ptr; + default: + if (regno == E_PSEUDO_CCR_REGNUM (gdbarch)) + return builtin_type (gdbarch)->builtin_uint8; + else if (regno == E_PSEUDO_EXR_REGNUM (gdbarch)) + return builtin_type (gdbarch)->builtin_uint8; + else if (is_h8300hmode (gdbarch)) + return builtin_type (gdbarch)->builtin_int32; + else + return builtin_type (gdbarch)->builtin_int16; + } + } } -static int -h8300_register_byte (int regno) +/* Helpers for h8300_pseudo_register_read. We expose ccr/exr as + pseudo-registers to users with smaller sizes than the corresponding + raw registers. These helpers extend/narrow the values. */ + +static enum register_status +pseudo_from_raw_register (struct gdbarch *gdbarch, struct regcache *regcache, + gdb_byte *buf, int pseudo_regno, int raw_regno) { - if (regno < 0 || regno >= E_NUM_REGS) - internal_error (__FILE__, __LINE__, - "h8300_register_byte: illegal register number %d", regno); - else - return regno * BINWORD; + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); + enum register_status status; + ULONGEST val; + + status = regcache_raw_read_unsigned (regcache, raw_regno, &val); + if (status == REG_VALID) + store_unsigned_integer (buf, + register_size (gdbarch, pseudo_regno), + byte_order, val); + return status; } -static int -h8300_register_raw_size (int regno) +/* See pseudo_from_raw_register. */ + +static void +raw_from_pseudo_register (struct gdbarch *gdbarch, struct regcache *regcache, + const gdb_byte *buf, int raw_regno, int pseudo_regno) { - if (regno < 0 || regno >= E_NUM_REGS) - internal_error (__FILE__, __LINE__, - "h8300_register_raw_size: illegal register number %d", - regno); - else - return BINWORD; + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); + ULONGEST val; + + val = extract_unsigned_integer (buf, register_size (gdbarch, pseudo_regno), + byte_order); + regcache_raw_write_unsigned (regcache, raw_regno, val); } -static struct type * -h8300_register_virtual_type (int regno) +static enum register_status +h8300_pseudo_register_read (struct gdbarch *gdbarch, + struct regcache *regcache, int regno, + gdb_byte *buf) { - if (regno < 0 || regno >= E_NUM_REGS) - internal_error (__FILE__, __LINE__, - "h8300_register_virtual_type: illegal register number %d", - regno); + if (regno == E_PSEUDO_CCR_REGNUM (gdbarch)) + { + return pseudo_from_raw_register (gdbarch, regcache, buf, + regno, E_CCR_REGNUM); + } + else if (regno == E_PSEUDO_EXR_REGNUM (gdbarch)) + { + return pseudo_from_raw_register (gdbarch, regcache, buf, + regno, E_EXR_REGNUM); + } else - return h8300hmode ? - builtin_type_unsigned_long : builtin_type_unsigned_short; + return regcache_raw_read (regcache, regno, buf); } static void -h8300_store_struct_return (CORE_ADDR addr, CORE_ADDR sp) -{ - write_register (0, addr); +h8300_pseudo_register_write (struct gdbarch *gdbarch, + struct regcache *regcache, int regno, + const gdb_byte *buf) +{ + if (regno == E_PSEUDO_CCR_REGNUM (gdbarch)) + raw_from_pseudo_register (gdbarch, regcache, buf, E_CCR_REGNUM, regno); + else if (regno == E_PSEUDO_EXR_REGNUM (gdbarch)) + raw_from_pseudo_register (gdbarch, regcache, buf, E_EXR_REGNUM, regno); + else + regcache_raw_write (regcache, regno, buf); } static int -h8300_use_struct_convention (int gcc_p, struct type *type) +h8300_dbg_reg_to_regnum (struct gdbarch *gdbarch, int regno) { - return 1; + if (regno == E_CCR_REGNUM) + return E_PSEUDO_CCR_REGNUM (gdbarch); + return regno; } -static CORE_ADDR -h8300_extract_struct_value_address (char *regbuf) +static int +h8300s_dbg_reg_to_regnum (struct gdbarch *gdbarch, int regno) { - return extract_address (regbuf + h8300_register_byte (E_ARG0_REGNUM), - h8300_register_raw_size (E_ARG0_REGNUM)); + if (regno == E_CCR_REGNUM) + return E_PSEUDO_CCR_REGNUM (gdbarch); + if (regno == E_EXR_REGNUM) + return E_PSEUDO_EXR_REGNUM (gdbarch); + return regno; } -const static unsigned char * -h8300_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr) +static const unsigned char * +h8300_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, + int *lenptr) { - /*static unsigned char breakpoint[] = { 0x7A, 0xFF };*/ /* ??? */ - static unsigned char breakpoint[] = { 0x01, 0x80 }; /* Sleep */ + /*static unsigned char breakpoint[] = { 0x7A, 0xFF }; *//* ??? */ + static unsigned char breakpoint[] = { 0x01, 0x80 }; /* Sleep */ *lenptr = sizeof (breakpoint); return breakpoint; @@ -1057,7 +1267,6 @@ No floating-point info available for this processor.\n"); static struct gdbarch * h8300_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) { - static LONGEST call_dummy_words[1] = { 0 }; struct gdbarch_tdep *tdep = NULL; struct gdbarch *gdbarch; @@ -1072,116 +1281,180 @@ h8300_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) if (info.bfd_arch_info->arch != bfd_arch_h8300) return NULL; + gdbarch = gdbarch_alloc (&info, 0); + + set_gdbarch_register_sim_regno (gdbarch, h8300_register_sim_regno); + switch (info.bfd_arch_info->mach) { - case bfd_mach_h8300: - h8300smode = 0; - h8300hmode = 0; - break; - case bfd_mach_h8300h: - h8300smode = 0; - h8300hmode = 1; - break; - case bfd_mach_h8300s: - h8300smode = 1; - h8300hmode = 1; - break; + case bfd_mach_h8300: + set_gdbarch_num_regs (gdbarch, 13); + set_gdbarch_num_pseudo_regs (gdbarch, 1); + set_gdbarch_ecoff_reg_to_regnum (gdbarch, h8300_dbg_reg_to_regnum); + set_gdbarch_dwarf2_reg_to_regnum (gdbarch, h8300_dbg_reg_to_regnum); + set_gdbarch_stab_reg_to_regnum (gdbarch, h8300_dbg_reg_to_regnum); + set_gdbarch_register_name (gdbarch, h8300_register_name); + set_gdbarch_ptr_bit (gdbarch, 2 * TARGET_CHAR_BIT); + set_gdbarch_addr_bit (gdbarch, 2 * TARGET_CHAR_BIT); + set_gdbarch_return_value (gdbarch, h8300_return_value); + set_gdbarch_print_insn (gdbarch, print_insn_h8300); + break; + case bfd_mach_h8300h: + case bfd_mach_h8300hn: + set_gdbarch_num_regs (gdbarch, 13); + set_gdbarch_num_pseudo_regs (gdbarch, 1); + set_gdbarch_ecoff_reg_to_regnum (gdbarch, h8300_dbg_reg_to_regnum); + set_gdbarch_dwarf2_reg_to_regnum (gdbarch, h8300_dbg_reg_to_regnum); + set_gdbarch_stab_reg_to_regnum (gdbarch, h8300_dbg_reg_to_regnum); + set_gdbarch_register_name (gdbarch, h8300_register_name); + if (info.bfd_arch_info->mach != bfd_mach_h8300hn) + { + set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT); + set_gdbarch_addr_bit (gdbarch, 4 * TARGET_CHAR_BIT); + } + else + { + set_gdbarch_ptr_bit (gdbarch, 2 * TARGET_CHAR_BIT); + set_gdbarch_addr_bit (gdbarch, 2 * TARGET_CHAR_BIT); + } + set_gdbarch_return_value (gdbarch, h8300h_return_value); + set_gdbarch_print_insn (gdbarch, print_insn_h8300h); + break; + case bfd_mach_h8300s: + case bfd_mach_h8300sn: + set_gdbarch_num_regs (gdbarch, 16); + set_gdbarch_num_pseudo_regs (gdbarch, 2); + set_gdbarch_ecoff_reg_to_regnum (gdbarch, h8300s_dbg_reg_to_regnum); + set_gdbarch_dwarf2_reg_to_regnum (gdbarch, h8300s_dbg_reg_to_regnum); + set_gdbarch_stab_reg_to_regnum (gdbarch, h8300s_dbg_reg_to_regnum); + set_gdbarch_register_name (gdbarch, h8300s_register_name); + if (info.bfd_arch_info->mach != bfd_mach_h8300sn) + { + set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT); + set_gdbarch_addr_bit (gdbarch, 4 * TARGET_CHAR_BIT); + } + else + { + set_gdbarch_ptr_bit (gdbarch, 2 * TARGET_CHAR_BIT); + set_gdbarch_addr_bit (gdbarch, 2 * TARGET_CHAR_BIT); + } + set_gdbarch_return_value (gdbarch, h8300h_return_value); + set_gdbarch_print_insn (gdbarch, print_insn_h8300s); + break; + case bfd_mach_h8300sx: + case bfd_mach_h8300sxn: + set_gdbarch_num_regs (gdbarch, 18); + set_gdbarch_num_pseudo_regs (gdbarch, 2); + set_gdbarch_ecoff_reg_to_regnum (gdbarch, h8300s_dbg_reg_to_regnum); + set_gdbarch_dwarf2_reg_to_regnum (gdbarch, h8300s_dbg_reg_to_regnum); + set_gdbarch_stab_reg_to_regnum (gdbarch, h8300s_dbg_reg_to_regnum); + set_gdbarch_register_name (gdbarch, h8300sx_register_name); + if (info.bfd_arch_info->mach != bfd_mach_h8300sxn) + { + set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT); + set_gdbarch_addr_bit (gdbarch, 4 * TARGET_CHAR_BIT); + } + else + { + set_gdbarch_ptr_bit (gdbarch, 2 * TARGET_CHAR_BIT); + set_gdbarch_addr_bit (gdbarch, 2 * TARGET_CHAR_BIT); + } + set_gdbarch_return_value (gdbarch, h8300h_return_value); + set_gdbarch_print_insn (gdbarch, print_insn_h8300s); + break; } - gdbarch = gdbarch_alloc (&info, 0); - - /* NOTE: cagney/2002-12-06: This can be deleted when this arch is - ready to unwind the PC first (see frame.c:get_prev_frame()). */ - set_gdbarch_deprecated_init_frame_pc (gdbarch, init_frame_pc_default); + set_gdbarch_pseudo_register_read (gdbarch, h8300_pseudo_register_read); + set_gdbarch_pseudo_register_write (gdbarch, h8300_pseudo_register_write); /* * Basic register fields and methods. */ - set_gdbarch_num_regs (gdbarch, E_NUM_REGS); - set_gdbarch_num_pseudo_regs (gdbarch, 0); set_gdbarch_sp_regnum (gdbarch, E_SP_REGNUM); - set_gdbarch_fp_regnum (gdbarch, E_FP_REGNUM); set_gdbarch_pc_regnum (gdbarch, E_PC_REGNUM); - set_gdbarch_register_name (gdbarch, h8300_register_name); - set_gdbarch_register_size (gdbarch, BINWORD); - set_gdbarch_register_bytes (gdbarch, E_NUM_REGS * BINWORD); - set_gdbarch_register_byte (gdbarch, h8300_register_byte); - set_gdbarch_register_raw_size (gdbarch, h8300_register_raw_size); - set_gdbarch_deprecated_max_register_raw_size (gdbarch, h8300h_reg_size); - set_gdbarch_register_virtual_size (gdbarch, h8300_register_raw_size); - set_gdbarch_deprecated_max_register_virtual_size (gdbarch, h8300h_reg_size); - set_gdbarch_register_virtual_type (gdbarch, h8300_register_virtual_type); + set_gdbarch_register_type (gdbarch, h8300_register_type); set_gdbarch_print_registers_info (gdbarch, h8300_print_registers_info); set_gdbarch_print_float_info (gdbarch, h8300_print_float_info); /* * Frame Info */ - set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, h8300_frame_init_saved_regs); - set_gdbarch_deprecated_init_extra_frame_info (gdbarch, h8300_init_extra_frame_info); - set_gdbarch_deprecated_frame_chain (gdbarch, h8300_frame_chain); - set_gdbarch_saved_pc_after_call (gdbarch, h8300_saved_pc_after_call); - set_gdbarch_deprecated_frame_saved_pc (gdbarch, h8300_frame_saved_pc); set_gdbarch_skip_prologue (gdbarch, h8300_skip_prologue); - set_gdbarch_frame_args_address (gdbarch, h8300_frame_args_address); - set_gdbarch_frame_locals_address (gdbarch, h8300_frame_locals_address); + + /* Frame unwinder. */ + set_gdbarch_unwind_pc (gdbarch, h8300_unwind_pc); + set_gdbarch_unwind_sp (gdbarch, h8300_unwind_sp); + set_gdbarch_dummy_id (gdbarch, h8300_dummy_id); + frame_base_set_default (gdbarch, &h8300_frame_base); /* * Miscelany */ - /* Stack grows up. */ + /* Stack grows up. */ set_gdbarch_inner_than (gdbarch, core_addr_lessthan); - /* PC stops zero byte after a trap instruction - (which means: exactly on trap instruction). */ - set_gdbarch_decr_pc_after_break (gdbarch, 0); - /* This value is almost never non-zero... */ - set_gdbarch_function_start_offset (gdbarch, 0); - /* This value is almost never non-zero... */ - set_gdbarch_frame_args_skip (gdbarch, 0); - /* OK to default this value to 'unknown'. */ - set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown); - set_gdbarch_frameless_function_invocation (gdbarch, - frameless_look_for_prologue); - /* - * Call Dummies - * - * These values and methods are used when gdb calls a target function. */ - set_gdbarch_deprecated_push_return_address (gdbarch, h8300_push_return_address); - set_gdbarch_deprecated_extract_return_value (gdbarch, h8300_extract_return_value); - set_gdbarch_deprecated_push_arguments (gdbarch, h8300_push_arguments); - set_gdbarch_deprecated_pop_frame (gdbarch, h8300_pop_frame); - set_gdbarch_deprecated_store_struct_return (gdbarch, h8300_store_struct_return); - set_gdbarch_deprecated_store_return_value (gdbarch, h8300_store_return_value); - set_gdbarch_deprecated_extract_struct_value_address (gdbarch, h8300_extract_struct_value_address); - set_gdbarch_use_struct_convention (gdbarch, h8300_use_struct_convention); - set_gdbarch_call_dummy_start_offset (gdbarch, 0); - set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0); - set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1); - set_gdbarch_call_dummy_length (gdbarch, 0); - set_gdbarch_call_dummy_words (gdbarch, call_dummy_words); - set_gdbarch_sizeof_call_dummy_words (gdbarch, 0); - set_gdbarch_fix_call_dummy (gdbarch, generic_fix_call_dummy); set_gdbarch_breakpoint_from_pc (gdbarch, h8300_breakpoint_from_pc); + set_gdbarch_push_dummy_call (gdbarch, h8300_push_dummy_call); + set_gdbarch_char_signed (gdbarch, 0); set_gdbarch_int_bit (gdbarch, 2 * TARGET_CHAR_BIT); set_gdbarch_long_bit (gdbarch, 4 * TARGET_CHAR_BIT); - set_gdbarch_ptr_bit (gdbarch, BINWORD * TARGET_CHAR_BIT); - set_gdbarch_addr_bit (gdbarch, BINWORD * TARGET_CHAR_BIT); + set_gdbarch_long_long_bit (gdbarch, 8 * TARGET_CHAR_BIT); + set_gdbarch_double_bit (gdbarch, 4 * TARGET_CHAR_BIT); + set_gdbarch_double_format (gdbarch, floatformats_ieee_single); + set_gdbarch_long_double_bit (gdbarch, 4 * TARGET_CHAR_BIT); + set_gdbarch_long_double_format (gdbarch, floatformats_ieee_single); - /* set_gdbarch_stack_align (gdbarch, SOME_stack_align); */ set_gdbarch_believe_pcc_promotion (gdbarch, 1); - /* Should be using push_dummy_call. */ - set_gdbarch_deprecated_dummy_write_sp (gdbarch, generic_target_write_sp); + /* Hook in the DWARF CFI frame unwinder. */ + dwarf2_append_unwinders (gdbarch); + frame_unwind_append_unwinder (gdbarch, &h8300_frame_unwind); return gdbarch; + } +extern initialize_file_ftype _initialize_h8300_tdep; /* -Wmissing-prototypes */ + void _initialize_h8300_tdep (void) { - tm_print_insn = gdb_print_insn_h8300; register_gdbarch_init (bfd_arch_h8300, h8300_gdbarch_init); } + +static int +is_h8300hmode (struct gdbarch *gdbarch) +{ + return gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300sx + || gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300sxn + || gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300s + || gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300sn + || gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300h + || gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300hn; +} + +static int +is_h8300smode (struct gdbarch *gdbarch) +{ + return gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300sx + || gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300sxn + || gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300s + || gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300sn; +} + +static int +is_h8300sxmode (struct gdbarch *gdbarch) +{ + return gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300sx + || gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300sxn; +} + +static int +is_h8300_normal_mode (struct gdbarch *gdbarch) +{ + return gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300sxn + || gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300sn + || gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_h8300hn; +}