| /* Target-dependent code for PowerPC systems running NetBSD. |
| Copyright 2002, 2003 Free Software Foundation, Inc. |
| Contributed by Wasabi Systems, 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 |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 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. */ |
| |
| #include "defs.h" |
| #include "gdbcore.h" |
| #include "regcache.h" |
| #include "target.h" |
| #include "breakpoint.h" |
| #include "value.h" |
| #include "osabi.h" |
| |
| #include "ppc-tdep.h" |
| #include "ppcnbsd-tdep.h" |
| #include "nbsd-tdep.h" |
| |
| #include "solib-svr4.h" |
| |
| #define REG_FIXREG_OFFSET(x) ((x) * 4) |
| #define REG_LR_OFFSET (32 * 4) |
| #define REG_CR_OFFSET (33 * 4) |
| #define REG_XER_OFFSET (34 * 4) |
| #define REG_CTR_OFFSET (35 * 4) |
| #define REG_PC_OFFSET (36 * 4) |
| #define SIZEOF_STRUCT_REG (37 * 4) |
| |
| #define FPREG_FPR_OFFSET(x) ((x) * 8) |
| #define FPREG_FPSCR_OFFSET (32 * 8) |
| #define SIZEOF_STRUCT_FPREG (33 * 8) |
| |
| void |
| ppcnbsd_supply_reg (char *regs, int regno) |
| { |
| struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
| int i; |
| |
| for (i = 0; i <= 31; i++) |
| { |
| if (regno == i || regno == -1) |
| supply_register (i, regs + REG_FIXREG_OFFSET (i)); |
| } |
| |
| if (regno == tdep->ppc_lr_regnum || regno == -1) |
| supply_register (tdep->ppc_lr_regnum, regs + REG_LR_OFFSET); |
| |
| if (regno == tdep->ppc_cr_regnum || regno == -1) |
| supply_register (tdep->ppc_cr_regnum, regs + REG_CR_OFFSET); |
| |
| if (regno == tdep->ppc_xer_regnum || regno == -1) |
| supply_register (tdep->ppc_xer_regnum, regs + REG_XER_OFFSET); |
| |
| if (regno == tdep->ppc_ctr_regnum || regno == -1) |
| supply_register (tdep->ppc_ctr_regnum, regs + REG_CTR_OFFSET); |
| |
| if (regno == PC_REGNUM || regno == -1) |
| supply_register (PC_REGNUM, regs + REG_PC_OFFSET); |
| } |
| |
| void |
| ppcnbsd_fill_reg (char *regs, int regno) |
| { |
| struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
| int i; |
| |
| for (i = 0; i <= 31; i++) |
| { |
| if (regno == i || regno == -1) |
| regcache_collect (i, regs + REG_FIXREG_OFFSET (i)); |
| } |
| |
| if (regno == tdep->ppc_lr_regnum || regno == -1) |
| regcache_collect (tdep->ppc_lr_regnum, regs + REG_LR_OFFSET); |
| |
| if (regno == tdep->ppc_cr_regnum || regno == -1) |
| regcache_collect (tdep->ppc_cr_regnum, regs + REG_CR_OFFSET); |
| |
| if (regno == tdep->ppc_xer_regnum || regno == -1) |
| regcache_collect (tdep->ppc_xer_regnum, regs + REG_XER_OFFSET); |
| |
| if (regno == tdep->ppc_ctr_regnum || regno == -1) |
| regcache_collect (tdep->ppc_ctr_regnum, regs + REG_CTR_OFFSET); |
| |
| if (regno == PC_REGNUM || regno == -1) |
| regcache_collect (PC_REGNUM, regs + REG_PC_OFFSET); |
| } |
| |
| void |
| ppcnbsd_supply_fpreg (char *fpregs, int regno) |
| { |
| struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
| int i; |
| |
| for (i = FP0_REGNUM; i <= FP0_REGNUM + 31; i++) |
| { |
| if (regno == i || regno == -1) |
| supply_register (i, fpregs + FPREG_FPR_OFFSET (i - FP0_REGNUM)); |
| } |
| |
| if (regno == tdep->ppc_fpscr_regnum || regno == -1) |
| supply_register (tdep->ppc_fpscr_regnum, fpregs + FPREG_FPSCR_OFFSET); |
| } |
| |
| void |
| ppcnbsd_fill_fpreg (char *fpregs, int regno) |
| { |
| struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch); |
| int i; |
| |
| for (i = FP0_REGNUM; i <= FP0_REGNUM + 31; i++) |
| { |
| if (regno == i || regno == -1) |
| regcache_collect (i, fpregs + FPREG_FPR_OFFSET (i - FP0_REGNUM)); |
| } |
| |
| if (regno == tdep->ppc_fpscr_regnum || regno == -1) |
| regcache_collect (tdep->ppc_fpscr_regnum, fpregs + FPREG_FPSCR_OFFSET); |
| } |
| |
| static void |
| fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which, |
| CORE_ADDR ignore) |
| { |
| char *regs, *fpregs; |
| |
| /* We get everything from one section. */ |
| if (which != 0) |
| return; |
| |
| regs = core_reg_sect; |
| fpregs = core_reg_sect + SIZEOF_STRUCT_REG; |
| |
| /* Integer registers. */ |
| ppcnbsd_supply_reg (regs, -1); |
| |
| /* Floating point registers. */ |
| ppcnbsd_supply_fpreg (fpregs, -1); |
| } |
| |
| static void |
| fetch_elfcore_registers (char *core_reg_sect, unsigned core_reg_size, int which, |
| CORE_ADDR ignore) |
| { |
| switch (which) |
| { |
| case 0: /* Integer registers. */ |
| if (core_reg_size != SIZEOF_STRUCT_REG) |
| warning ("Wrong size register set in core file."); |
| else |
| ppcnbsd_supply_reg (core_reg_sect, -1); |
| break; |
| |
| case 2: /* Floating point registers. */ |
| if (core_reg_size != SIZEOF_STRUCT_FPREG) |
| warning ("Wrong size FP register set in core file."); |
| else |
| ppcnbsd_supply_fpreg (core_reg_sect, -1); |
| break; |
| |
| default: |
| /* Don't know what kind of register request this is; just ignore it. */ |
| break; |
| } |
| } |
| |
| static struct core_fns ppcnbsd_core_fns = |
| { |
| bfd_target_unknown_flavour, /* core_flavour */ |
| default_check_format, /* check_format */ |
| default_core_sniffer, /* core_sniffer */ |
| fetch_core_registers, /* core_read_registers */ |
| NULL /* next */ |
| }; |
| |
| static struct core_fns ppcnbsd_elfcore_fns = |
| { |
| bfd_target_elf_flavour, /* core_flavour */ |
| default_check_format, /* check_format */ |
| default_core_sniffer, /* core_sniffer */ |
| fetch_elfcore_registers, /* core_read_registers */ |
| NULL /* next */ |
| }; |
| |
| static int |
| ppcnbsd_pc_in_sigtramp (CORE_ADDR pc, char *func_name) |
| { |
| /* FIXME: Need to add support for kernel-provided signal trampolines. */ |
| return (nbsd_pc_in_sigtramp (pc, func_name)); |
| } |
| |
| static void |
| ppcnbsd_init_abi (struct gdbarch_info info, |
| struct gdbarch *gdbarch) |
| { |
| set_gdbarch_pc_in_sigtramp (gdbarch, ppcnbsd_pc_in_sigtramp); |
| |
| set_solib_svr4_fetch_link_map_offsets (gdbarch, |
| nbsd_ilp32_solib_svr4_fetch_link_map_offsets); |
| } |
| |
| void |
| _initialize_ppcnbsd_tdep (void) |
| { |
| gdbarch_register_osabi (bfd_arch_powerpc, 0, GDB_OSABI_NETBSD_ELF, |
| ppcnbsd_init_abi); |
| |
| add_core_fns (&ppcnbsd_core_fns); |
| add_core_fns (&ppcnbsd_elfcore_fns); |
| } |