/* Target-dependent code for GDB, the GNU debugger.
- Copyright 2001
+ Copyright 2001, 2002, 2003
Free Software Foundation, Inc.
This file is part of GDB.
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
{
/* 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 saved PC and SP in `struct sigcontext'. */
+ int sc_pc_offset;
+ int sc_sp_offset;
};
/* Floating-point registers. */
/* 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. */
#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)
+/* 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) FP_REGNUM_P (n)
-#define IS_FPU_CTRL_REGNUM(n) FPC_REGNUM_P (n)
-#define IS_SSE_REGNUM(n) SSE_REGNUM_P (n)
+#define IS_FP_REGNUM(n) i386_fp_regnum_p (n)
+#define IS_SSE_REGNUM(n) i386_sse_regnum_p (n)
+
+#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)
+
+/* 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);
+
+/* 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 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 *);
#endif /* i386-tdep.h */