diff options
Diffstat (limited to 'contrib/gdb/gdb/i386-tdep.h')
| -rw-r--r-- | contrib/gdb/gdb/i386-tdep.h | 163 |
1 files changed, 140 insertions, 23 deletions
diff --git a/contrib/gdb/gdb/i386-tdep.h b/contrib/gdb/gdb/i386-tdep.h index a990adf..9cb8765 100644 --- a/contrib/gdb/gdb/i386-tdep.h +++ b/contrib/gdb/gdb/i386-tdep.h @@ -1,6 +1,6 @@ -/* Target-dependent code for GDB, the GNU debugger. - Copyright 2001 - Free Software Foundation, Inc. +/* Target-dependent code for the i386. + + Copyright 2001, 2002, 2003, 2004 Free Software Foundation, Inc. This file is part of GDB. @@ -22,6 +22,12 @@ #ifndef I386_TDEP_H #define I386_TDEP_H +struct frame_info; +struct gdbarch; +struct reggroup; +struct regset; +struct regcache; + /* GDB's i386 target supports both the 32-bit Intel Architecture (IA-32) and the 64-bit AMD x86-64 architecture. Internally it uses a similar register layout for both. @@ -40,20 +46,64 @@ differs and is determined by the num_xmm_regs member of `struct gdbarch_tdep'. */ +/* Convention for returning structures. */ + +enum struct_return +{ + pcc_struct_return, /* Return "short" structures in memory. */ + reg_struct_return /* Return "short" structures in registers. */ +}; + /* i386 architecture specific information. */ struct gdbarch_tdep { - /* OS/ABI. */ - int os_ident; + /* General-purpose registers. */ + struct regset *gregset; + int *gregset_reg_offset; + int gregset_num_regs; + size_t sizeof_gregset; + + /* Floating-point registers. */ + struct regset *fpregset; + size_t sizeof_fpregset; + + /* Register number for %st(0). The register numbers for the other + registers follow from this one. Set this to -1 to indicate the + absence of an FPU. */ + int st0_regnum; + + /* Register number for %mm0. Set this to -1 to indicate the absence + of MMX support. */ + int mm0_regnum; /* Number of SSE registers. */ int num_xmm_regs; + + /* Offset of saved PC in jmp_buf. */ + int jb_pc_offset; + + /* Convention for returning structures. */ + enum struct_return struct_return; + + /* Address range where sigtramp lives. */ + CORE_ADDR sigtramp_start; + CORE_ADDR sigtramp_end; + + /* Get address of sigcontext for sigtramp. */ + CORE_ADDR (*sigcontext_addr) (struct frame_info *); + + /* Offset of registers in `struct sigcontext'. */ + int *sc_reg_offset; + int sc_num_regs; + + /* Offset of saved PC and SP in `struct sigcontext'. Usage of these + is deprecated, please use `sc_reg_offset' instead. */ + int sc_pc_offset; + int sc_sp_offset; }; /* Floating-point registers. */ -#define FPU_REG_RAW_SIZE 10 - /* All FPU control regusters (except for FIOFF and FOOFF) are 16-bit (at most) in the FPU, but are zero-extended to 32 bits in GDB's register cache. */ @@ -86,11 +136,10 @@ struct gdbarch_tdep /* FPU opcode, bottom eleven bits. */ #define FOP_REGNUM (FPC_REGNUM + 7) -/* Return non-zero if N corresponds to a FPU data registers. */ -#define FP_REGNUM_P(n) (FP0_REGNUM <= (n) && (n) < FPC_REGNUM) - -/* Return non-zero if N corresponds to a FPU control register. */ -#define FPC_REGNUM_P(n) (FPC_REGNUM <= (n) && (n) < XMM0_REGNUM) +/* Return non-zero if REGNUM matches the FP register and the FP + register set is active. */ +extern int i386_fp_regnum_p (int regnum); +extern int i386_fpc_regnum_p (int regnum); /* SSE registers. */ @@ -101,16 +150,84 @@ struct gdbarch_tdep #define MXCSR_REGNUM \ (XMM0_REGNUM + gdbarch_tdep (current_gdbarch)->num_xmm_regs) -/* Return non-zero if N corresponds to a SSE data register. */ -#define SSE_REGNUM_P(n) (XMM0_REGNUM <= (n) && (n) < MXCSR_REGNUM) - -/* FIXME: kettenis/2001-11-24: Obsolete macro's. */ -#define FCS_REGNUM FISEG_REGNUM -#define FCOFF_REGNUM FIOFF_REGNUM -#define FDS_REGNUM FOSEG_REGNUM -#define FDOFF_REGNUM FOOFF_REGNUM -#define IS_FP_REGNUM(n) FP_REGNUM_P (n) -#define IS_FPU_CTRL_REGNUM(n) FPC_REGNUM_P (n) -#define IS_SSE_REGNUM(n) SSE_REGNUM_P (n) +/* Register numbers of various important registers. */ + +enum i386_regnum +{ + I386_EAX_REGNUM, /* %eax */ + I386_ECX_REGNUM, /* %ecx */ + I386_EDX_REGNUM, /* %edx */ + I386_EBX_REGNUM, /* %ebx */ + I386_ESP_REGNUM, /* %esp */ + I386_EBP_REGNUM, /* %ebp */ + I386_ESI_REGNUM, /* %esi */ + I386_EDI_REGNUM, /* %edi */ + I386_EIP_REGNUM, /* %eip */ + I386_EFLAGS_REGNUM, /* %eflags */ + I386_CS_REGNUM, /* %cs */ + I386_SS_REGNUM, /* %ss */ + I386_DS_REGNUM, /* %ds */ + I386_ES_REGNUM, /* %es */ + I386_FS_REGNUM, /* %fs */ + I386_GS_REGNUM, /* %gs */ + I386_ST0_REGNUM /* %st(0) */ +}; + +#define I386_NUM_GREGS 16 +#define I386_NUM_FREGS 16 +#define I386_NUM_XREGS 9 + +#define I386_SSE_NUM_REGS (I386_NUM_GREGS + I386_NUM_FREGS \ + + I386_NUM_XREGS) + +/* Size of the largest register. */ +#define I386_MAX_REGISTER_SIZE 16 + +/* Functions exported from i386-tdep.c. */ +extern CORE_ADDR i386_pe_skip_trampoline_code (CORE_ADDR pc, char *name); +extern int i386_frameless_signal_p (struct frame_info *frame); + +/* Return the name of register REG. */ +extern char const *i386_register_name (int reg); + +/* Return non-zero if REGNUM is a member of the specified group. */ +extern int i386_register_reggroup_p (struct gdbarch *gdbarch, int regnum, + struct reggroup *group); + +/* Supply register REGNUM from the general-purpose register set REGSET + to register cache REGCACHE. If REGNUM is -1, do this for all + registers in REGSET. */ +extern void i386_supply_gregset (const struct regset *regset, + struct regcache *regcache, int regnum, + const void *gregs, size_t len); + +/* Return the appropriate register set for the core section identified + by SECT_NAME and SECT_SIZE. */ +extern const struct regset * + i386_regset_from_core_section (struct gdbarch *gdbarch, + const char *sect_name, size_t sect_size); + +/* Initialize a basic ELF architecture variant. */ +extern void i386_elf_init_abi (struct gdbarch_info, struct gdbarch *); + +/* Initialize a SVR4 architecture variant. */ +extern void i386_svr4_init_abi (struct gdbarch_info, struct gdbarch *); + + +/* Functions and variables exported from i386bsd-tdep.c. */ + +extern void i386bsd_init_abi (struct gdbarch_info, struct gdbarch *); +extern int i386bsd_pc_in_sigtramp (CORE_ADDR pc, char *name); +extern CORE_ADDR i386bsd_sigtramp_start (CORE_ADDR pc); +extern CORE_ADDR i386bsd_sigtramp_end (CORE_ADDR pc); +extern CORE_ADDR i386fbsd_sigtramp_start_addr; +extern CORE_ADDR i386fbsd_sigtramp_end_addr; +extern CORE_ADDR i386obsd_sigtramp_start_addr; +extern CORE_ADDR i386obsd_sigtramp_end_addr; +extern int i386fbsd4_sc_reg_offset[]; +extern int i386fbsd_sc_reg_offset[]; +extern int i386nbsd_sc_reg_offset[]; +extern int i386obsd_sc_reg_offset[]; +extern int i386bsd_sc_reg_offset[]; #endif /* i386-tdep.h */ |
