From: Stephane Carrez Date: Tue, 13 Aug 2002 17:24:50 +0000 (+0000) Subject: * m68hc11-tdep.c (M68HC12_NUM_PSEUDO_REGS): New define. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=548bcbeca813f4c010178d1f8bb6b63b1f6de409;p=binutils-gdb.git * m68hc11-tdep.c (M68HC12_NUM_PSEUDO_REGS): New define. (M68HC12_HARD_PC_REGNUM): Define specific PC for 68HC12 (pseudo reg). (m68hc11_pseudo_register_read): Compute the 68HC12 PC using the real PC and the page number (if it's within the memory bank window). (m68hc11_pseudo_register_write): Likewise when saving. (m68hc11_register_name): Name the virtual pc 'pc' and the real one ppc. (m68hc11_register_virtual_type): Return uint32 for virtual pc. (m68hc11_register_raw_size): And use 32-bit for it. (m68hc11_gdbarch_init): Use 32-bit address for 68HC12 if the 16K memory bank is used by the prog; also use the virtual pc. --- diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 90f6ec4f2f0..1f70d123fa8 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,16 @@ +2002-08-13 Stephane Carrez + + * m68hc11-tdep.c (M68HC12_NUM_PSEUDO_REGS): New define. + (M68HC12_HARD_PC_REGNUM): Define specific PC for 68HC12 (pseudo reg). + (m68hc11_pseudo_register_read): Compute the 68HC12 PC using the + real PC and the page number (if it's within the memory bank window). + (m68hc11_pseudo_register_write): Likewise when saving. + (m68hc11_register_name): Name the virtual pc 'pc' and the real one ppc. + (m68hc11_register_virtual_type): Return uint32 for virtual pc. + (m68hc11_register_raw_size): And use 32-bit for it. + (m68hc11_gdbarch_init): Use 32-bit address for 68HC12 if the + 16K memory bank is used by the prog; also use the virtual pc. + 2002-08-13 Stephane Carrez * m68hc11-tdep.c (m68hc11_elf_make_msymbol_special): New function. diff --git a/gdb/m68hc11-tdep.c b/gdb/m68hc11-tdep.c index 0ad7c9dcde1..1cd4921f7c4 100644 --- a/gdb/m68hc11-tdep.c +++ b/gdb/m68hc11-tdep.c @@ -128,6 +128,10 @@ enum insn_return_kind { #define M68HC11_REG_SIZE (2) +#define M68HC12_NUM_REGS (9) +#define M68HC12_NUM_PSEUDO_REGS ((M68HC11_MAX_SOFT_REGS+5)+1-1) +#define M68HC12_HARD_PC_REGNUM (SOFT_D32_REGNUM+1) + struct insn_sequence; struct gdbarch_tdep { @@ -280,6 +284,24 @@ m68hc11_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache, int regno, void *buf) { + /* The PC is a pseudo reg only for 68HC12 with the memory bank + addressing mode. */ + if (regno == M68HC12_HARD_PC_REGNUM) + { + const int regsize = TYPE_LENGTH (builtin_type_uint32); + CORE_ADDR pc = read_register (HARD_PC_REGNUM); + int page = read_register (HARD_PAGE_REGNUM); + + if (pc >= 0x8000 && pc < 0xc000) + { + pc -= 0x8000; + pc += (page << 14); + pc += 0x1000000; + } + store_unsigned_integer (buf, regsize, pc); + return; + } + m68hc11_initialize_register_info (); /* Fetch a soft register: translate into a memory read. */ @@ -300,6 +322,28 @@ m68hc11_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache, int regno, const void *buf) { + /* The PC is a pseudo reg only for 68HC12 with the memory bank + addressing mode. */ + if (regno == M68HC12_HARD_PC_REGNUM) + { + const int regsize = TYPE_LENGTH (builtin_type_uint32); + char *tmp = alloca (regsize); + CORE_ADDR pc; + + memcpy (tmp, buf, regsize); + pc = extract_unsigned_integer (tmp, regsize); + if (pc >= 0x1000000) + { + pc -= 0x1000000; + write_register (HARD_PAGE_REGNUM, (pc >> 14) & 0x0ff); + pc &= 0x03fff; + write_register (HARD_PC_REGNUM, pc + 0x8000); + } + else + write_register (HARD_PC_REGNUM, pc); + return; + } + m68hc11_initialize_register_info (); /* Store a soft register: translate into a memory write. */ @@ -315,6 +359,11 @@ m68hc11_pseudo_register_write (struct gdbarch *gdbarch, static const char * m68hc11_register_name (int reg_nr) { + if (reg_nr == M68HC12_HARD_PC_REGNUM && USE_PAGE_REGISTER) + return "pc"; + if (reg_nr == HARD_PC_REGNUM && USE_PAGE_REGISTER) + return "ppc"; + if (reg_nr < 0) return NULL; if (reg_nr >= M68HC11_ALL_REGS) @@ -1011,6 +1060,9 @@ m68hc11_register_virtual_type (int reg_nr) case HARD_CCR_REGNUM: return builtin_type_uint8; + case M68HC12_HARD_PC_REGNUM: + return builtin_type_uint32; + default: return builtin_type_uint16; } @@ -1144,6 +1196,9 @@ m68hc11_register_raw_size (int reg_nr) case HARD_CCR_REGNUM: return 1; + case M68HC12_HARD_PC_REGNUM: + return 4; + default: return M68HC11_REG_SIZE; } @@ -1214,12 +1269,25 @@ m68hc11_gdbarch_init (struct gdbarch_info info, tdep->stack_correction = 1; tdep->use_page_register = 0; tdep->prologue = m6811_prologue; + set_gdbarch_addr_bit (gdbarch, 16); + set_gdbarch_num_pseudo_regs (gdbarch, M68HC11_NUM_PSEUDO_REGS); + set_gdbarch_pc_regnum (gdbarch, HARD_PC_REGNUM); + set_gdbarch_num_regs (gdbarch, M68HC11_NUM_REGS); break; case bfd_arch_m68hc12: tdep->stack_correction = 0; tdep->use_page_register = elf_flags & E_M68HC12_BANKS; tdep->prologue = m6812_prologue; + set_gdbarch_addr_bit (gdbarch, elf_flags & E_M68HC12_BANKS ? 32 : 16); + set_gdbarch_num_pseudo_regs (gdbarch, + elf_flags & E_M68HC12_BANKS + ? M68HC12_NUM_PSEUDO_REGS + : M68HC11_NUM_PSEUDO_REGS); + set_gdbarch_pc_regnum (gdbarch, elf_flags & E_M68HC12_BANKS + ? M68HC12_HARD_PC_REGNUM : HARD_PC_REGNUM); + set_gdbarch_num_regs (gdbarch, elf_flags & E_M68HC12_BANKS + ? M68HC12_NUM_REGS : M68HC11_NUM_REGS); break; default: @@ -1255,11 +1323,8 @@ m68hc11_gdbarch_init (struct gdbarch_info info, set_gdbarch_read_sp (gdbarch, generic_target_read_sp); set_gdbarch_write_sp (gdbarch, generic_target_write_sp); - set_gdbarch_num_regs (gdbarch, M68HC11_NUM_REGS); - set_gdbarch_num_pseudo_regs (gdbarch, M68HC11_NUM_PSEUDO_REGS); set_gdbarch_sp_regnum (gdbarch, HARD_SP_REGNUM); set_gdbarch_fp_regnum (gdbarch, SOFT_FP_REGNUM); - set_gdbarch_pc_regnum (gdbarch, HARD_PC_REGNUM); set_gdbarch_register_name (gdbarch, m68hc11_register_name); set_gdbarch_register_size (gdbarch, 2); set_gdbarch_register_bytes (gdbarch, M68HC11_ALL_REGS * 2);