diff options
Diffstat (limited to 'gdb/sparc64fbsd-tdep.c')
| -rw-r--r-- | gdb/sparc64fbsd-tdep.c | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/gdb/sparc64fbsd-tdep.c b/gdb/sparc64fbsd-tdep.c new file mode 100644 index 00000000000..2b910c1b33d --- /dev/null +++ b/gdb/sparc64fbsd-tdep.c @@ -0,0 +1,237 @@ +/* Target-dependent code for FreeBSD/sparc64. + + Copyright 2003 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 + (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 "osabi.h" +#include "regcache.h" +#include "target.h" + +#include "gdb_string.h" + +#include "sparc64-tdep.h" + +/* From <machine/reg.h>. */ + +/* Offset of registers in `struct reg'. */ +int sparc64fbsd_r_global_offset = (0 * 8); +int sparc64fbsd_r_out_offset = (8 * 8); +int sparc64fbsd_r_fprs_offset = (16 * 8); +int sparc64fbsd_r_tnpc_offset = (24 * 8); +int sparc64fbsd_r_tpc_offset = (25 * 8); +int sparc64fbsd_r_tstate_offset = (26 * 8); +int sparc64fbsd_r_y_offset = (28 * 8); + +/* Size of `struct reg' and `struct fpreg'. */ +int sparc64fbsd_sizeof_struct_reg = 256; +int sparc64fbsd_sizeof_struct_fpreg = 272; + +void +sparc64fbsd_supply_reg (const char *regs, int regnum) +{ + char buf[8]; + int i; + + if (regnum == SPARC64_PC_REGNUM || regnum == -1) + supply_register (SPARC64_PC_REGNUM, regs + sparc64fbsd_r_tpc_offset); + + if (regnum == SPARC64_NPC_REGNUM || regnum == -1) + supply_register (SPARC64_NPC_REGNUM, regs + sparc64fbsd_r_tnpc_offset); + + if (regnum == SPARC64_STATE_REGNUM || regnum == -1) + supply_register (SPARC64_STATE_REGNUM, regs + sparc64fbsd_r_tstate_offset); + + if (regnum == SPARC64_FPRS_REGNUM || regnum == -1) + supply_register (SPARC64_FPRS_REGNUM, regs + sparc64fbsd_r_fprs_offset); + + if (regnum == SPARC64_Y_REGNUM || regnum == -1) + supply_register (SPARC64_Y_REGNUM, regs + sparc64fbsd_r_y_offset); + + if ((regnum >= SPARC_G0_REGNUM && regnum <= SPARC_G7_REGNUM) || regnum == -1) + { + if (regnum == SPARC_G0_REGNUM || regnum == -1) + supply_register (SPARC_G0_REGNUM, NULL); /* %g0 is always zero. */ + for (i = SPARC_G1_REGNUM; i <= SPARC_G7_REGNUM; i++) + { + if (regnum == i || regnum == -1) + supply_register (i, (regs + sparc64fbsd_r_global_offset + + ((i - SPARC_G0_REGNUM) * 8))); + } + } + + if ((regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM) || regnum == -1) + { + for (i = SPARC_O0_REGNUM; i <= SPARC_O7_REGNUM; i++) + { + if (regnum == i || regnum == -1) + supply_register (i, (regs + sparc64fbsd_r_out_offset + + ((i - SPARC_O0_REGNUM) * 8))); + } + } + + /* Inputs and Locals are stored onto the stack by by the kernel. */ + if ((regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) || regnum == -1) + { + ULONGEST sp; + + regcache_cooked_read_unsigned (current_regcache, SPARC_SP_REGNUM, &sp); + sparc_supply_rwindow (sp, regnum); + } +} + +void +sparc64fbsd_fill_reg (char *regs, int regnum) +{ + char buf[8]; + int i; + + if (regnum == SPARC64_PC_REGNUM || regnum == -1) + regcache_collect (SPARC64_PC_REGNUM, regs + sparc64fbsd_r_tpc_offset); + + if (regnum == SPARC64_NPC_REGNUM || regnum == -1) + regcache_collect (SPARC64_NPC_REGNUM, regs + sparc64fbsd_r_tnpc_offset); + + if (regnum == SPARC64_FPRS_REGNUM || regnum == -1) + regcache_collect (SPARC64_FPRS_REGNUM, regs + sparc64fbsd_r_fprs_offset); + + if (regnum == SPARC64_Y_REGNUM || regnum == -1) + regcache_collect (SPARC64_Y_REGNUM, regs + sparc64fbsd_r_y_offset); + + if ((regnum >= SPARC_G0_REGNUM && regnum <= SPARC_G7_REGNUM) || regnum == -1) + { + /* %g0 is always zero. */ + for (i = SPARC_G1_REGNUM; i <= SPARC_G7_REGNUM; i++) + { + if (regnum == i || regnum == -1) + regcache_collect (i, (regs + sparc64fbsd_r_global_offset + + ((i - SPARC_G0_REGNUM) * 8))); + } + } + + if ((regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM) || regnum == -1) + { + for (i = SPARC_O0_REGNUM; i <= SPARC_O7_REGNUM; i++) + { + if (regnum == i || regnum == -1) + regcache_collect (i, (regs + sparc64fbsd_r_out_offset + + ((i - SPARC_O0_REGNUM) * 8))); + } + } + + /* Responsibility for the stack regs is pushed off onto the caller. */ +} + +void +sparc64fbsd_supply_fpreg (const char *fpregs, int regnum) +{ + int i; + + for (i = 0; i < 32; i++) + { + if (regnum == (SPARC_F0_REGNUM + i) || regnum == -1) + supply_register (SPARC_F0_REGNUM + i, fpregs + (i * 4)); + } + + for (i = 0; i < 16; i++) + { + if (regnum == (SPARC64_F32_REGNUM + i) || regnum == -1) + supply_register (SPARC64_F32_REGNUM + i, fpregs + (32 * 4) + (i * 8)); + } + + if (regnum == SPARC64_FSR_REGNUM || regnum == -1) + supply_register (SPARC64_FSR_REGNUM, fpregs + (32 * 4) + (16 * 8)); +} + +void +sparc64fbsd_fill_fpreg (char *fpregs, int regnum) +{ + int i; + + for (i = 0; i < 32; i++) + { + if (regnum == (SPARC_F0_REGNUM + i) || regnum == -1) + regcache_collect (SPARC_F0_REGNUM + i, fpregs + (i * 4)); + } + + for (i = 0; i < 16; i++) + { + if (regnum == (SPARC64_F32_REGNUM + i) || regnum == -1) + regcache_collect (SPARC64_F32_REGNUM + i, fpregs + (32 * 4) + (i * 8)); + } + + if (regnum == SPARC64_FSR_REGNUM || regnum == -1) + regcache_collect (SPARC64_FSR_REGNUM, fpregs + (32 * 4) + (16 * 8)); +} + + +static void +fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which, + CORE_ADDR ignore) +{ + switch (which) + { + case 0: /* Integer registers */ + if (core_reg_size != sparc64fbsd_sizeof_struct_reg) + warning ("Wrong size register set in core file."); + else + sparc64fbsd_supply_reg (core_reg_sect, -1); + break; + + case 2: /* Floating pointer registers */ + if (core_reg_size != sparc64fbsd_sizeof_struct_fpreg) + warning ("Wrong size FP register set in core file."); + else + sparc64fbsd_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 sparc64fbsd_core_fns = +{ + bfd_target_elf_flavour, /* core_flavour */ + default_check_format, /* check_format */ + default_core_sniffer, /* core_sniffer */ + fetch_core_registers, /* core_read_registers */ + NULL +}; + + +static void +sparc64fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) +{ + /* Nothing yet. */ +} + +/* Provide a prototype to silence -Wmissing-prototypes. */ +void _initialize_sparc64fbsd_tdep (void); + +void +_initialize_sparc64fbsd_tdep (void) +{ + gdbarch_register_osabi (bfd_arch_sparc, bfd_mach_sparc_v9, + GDB_OSABI_FREEBSD_ELF, sparc64fbsd_init_abi); + + add_core_fns (&sparc64fbsd_core_fns); +} |