-/* Target-dependent code for GDB, the GNU debugger.
- Copyright 2001, 2002
+/* Target-dependent code for the i386.
+
+ Copyright 2001, 2002, 2003
Free Software Foundation, Inc.
This file is part of GDB.
#ifndef I386_TDEP_H
#define I386_TDEP_H
-#include "osabi.h"
+struct frame_info;
+struct gdbarch;
+struct reggroup;
+struct regset;
/* GDB's i386 target supports both the 32-bit Intel Architecture
(IA-32) and the 64-bit AMD x86-64 architecture. Internally it uses
/* i386 architecture specific information. */
struct gdbarch_tdep
{
- /* ABI. */
- enum gdb_osabi osabi;
+ /* 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;
/* Get address of sigcontext for sigtramp. */
CORE_ADDR (*sigcontext_addr) (struct frame_info *);
- /* Offset of saved PC and SP in `struct sigcontext'. */
+ /* 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. */
#define MXCSR_REGNUM \
(XMM0_REGNUM + gdbarch_tdep (current_gdbarch)->num_xmm_regs)
-/* Return non-zero if REGNUM matches the SSE register and the SSE
- register set is active. */
-extern int i386_sse_regnum_p (int regnum);
-extern int i386_mxcsr_regnum_p (int 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) i386_fp_regnum_p (n)
-#define IS_FPU_CTRL_REGNUM(n) i386_fpc_regnum_p (n)
-#define IS_SSE_REGNUM(n) i386_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_ST0_REGNUM = 16, /* %st(0) */
+};
#define I386_NUM_GREGS 16
#define I386_NUM_FREGS 16
#define I386_SSE_NUM_REGS (I386_NUM_GREGS + I386_NUM_FREGS \
+ I386_NUM_XREGS)
-/* Sizes of individual register sets. These cover the entire register
- file, so summing up the sizes of those portions actually present
- yields REGISTER_BYTES. */
-#define I386_SIZEOF_GREGS (I386_NUM_GREGS * 4)
-#define I386_SIZEOF_FREGS (8 * 10 + 8 * 4)
-#define I386_SIZEOF_XREGS (8 * 16 + 4)
-
-#define I386_SSE_SIZEOF_REGS (I386_SIZEOF_GREGS + I386_SIZEOF_FREGS \
- + I386_SIZEOF_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 *);
+\f
-/* Functions exported from i386bsd-tdep.c. */
+/* Functions and variables exported from i386bsd-tdep.c. */
-extern CORE_ADDR i386bsd_sigcontext_addr (struct frame_info *frame);
extern void i386bsd_init_abi (struct gdbarch_info, struct gdbarch *);
+extern CORE_ADDR i386fbsd_sigtramp_start;
+extern CORE_ADDR i386fbsd_sigtramp_end;
+extern CORE_ADDR i386obsd_sigtramp_start;
+extern CORE_ADDR i386obsd_sigtramp_end;
+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 */