diff options
Diffstat (limited to 'gdb/i386nbsd-tdep.c')
| -rw-r--r-- | gdb/i386nbsd-tdep.c | 127 |
1 files changed, 125 insertions, 2 deletions
diff --git a/gdb/i386nbsd-tdep.c b/gdb/i386nbsd-tdep.c index 7174d4d..02ba77c 100644 --- a/gdb/i386nbsd-tdep.c +++ b/gdb/i386nbsd-tdep.c @@ -1,5 +1,5 @@ /* Target-dependent code for NetBSD/i386, for GDB. - Copyright 1988, 1989, 1991, 1992, 1994, 1996, 2000, 2001 + Copyright 1988, 1989, 1991, 1992, 1994, 1996, 2000, 2001, 2002 Free Software Foundation, Inc. This file is part of GDB. @@ -21,12 +21,135 @@ #include "defs.h" #include "gdbtypes.h" +#include "gdbcore.h" +#include "regcache.h" +#include "i387-tdep.h" + +/* Map a GDB register number to an offset in the reg structure. */ +static int regmap[] = +{ + ( 0 * 4), /* %eax */ + ( 1 * 4), /* %ecx */ + ( 2 * 4), /* %edx */ + ( 3 * 4), /* %ebx */ + ( 4 * 4), /* %esp */ + ( 5 * 4), /* %epb */ + ( 6 * 4), /* %esi */ + ( 7 * 4), /* %edi */ + ( 8 * 4), /* %eip */ + ( 9 * 4), /* %eflags */ + (10 * 4), /* %cs */ + (11 * 4), /* %ss */ + (12 * 4), /* %ds */ + (13 * 4), /* %es */ + (14 * 4), /* %fs */ + (15 * 4), /* %gs */ +}; + +#define SIZEOF_STRUCT_REG (16 * 4) + +static void +i386nbsd_supply_reg (char *regs, int regno) +{ + int i; + + for (i = 0; i <= 15; i++) + if (regno == i || regno == -1) + supply_register (i, regs + regmap[i]); +} + +static void +fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which, + CORE_ADDR ignore) +{ + char *regs, *fsave; + + /* We get everything from one section. */ + if (which != 0) + return; + + if (core_reg_size < (SIZEOF_STRUCT_REG + 108)) + { + warning ("Wrong size register set in core file."); + return; + } + + regs = core_reg_sect; + fsave = core_reg_sect + SIZEOF_STRUCT_REG; + + /* Integer registers. */ + i386nbsd_supply_reg (regs, -1); + + /* Floating point registers. */ + i387_supply_fsave (fsave); +} + +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 + i386nbsd_supply_reg (core_reg_sect, -1); + break; + + case 2: /* Floating point registers. */ + if (core_reg_size != 108) + warning ("Wrong size FP register set in core file."); + else + i387_supply_fsave (core_reg_sect); + break; + + case 3: /* "Extended" floating point registers. This is gdb-speak + for SSE/SSE2. */ + if (core_reg_size != 512) + warning ("Wrong size XMM register set in core file."); + else + i387_supply_fxsave (core_reg_sect); + break; + + default: + /* Don't know what kind of register request this is; just ignore it. */ + break; + } +} + +static struct core_fns i386nbsd_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 i386nbsd_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 */ +}; + +/* FIXME: should be multi-arch'd */ int -i386nbsd_use_struct_convention (int gcc_p, struct type *type) +i386nbsd_aout_use_struct_convention (int gcc_p, struct type *type) { return !(TYPE_LENGTH (type) == 1 || TYPE_LENGTH (type) == 2 || TYPE_LENGTH (type) == 4 || TYPE_LENGTH (type) == 8); } + +void +_initialize_i386nbsd_tdep (void) +{ + add_core_fns (&i386nbsd_core_fns); + add_core_fns (&i386nbsd_elfcore_fns); +} |