2003-09-16 Andrew Cagney <cagney@redhat.com>

[deliverable/binutils-gdb.git] / gdb / i386-tdep.h

diff --git a/gdb/i386-tdep.h b/gdb/i386-tdep.h
index d255c40ca0e8d71518334cae420465f4e1436070..7412b8ea867e9d513e7845e6cdb597f0572fc64b 100644 (file)
--- a/gdb/i386-tdep.h
+++ b/gdb/i386-tdep.h
@@ -1,5 +1,5 @@
 /* Target-dependent code for GDB, the GNU debugger.
-   Copyright 2001, 2002
+   Copyright 2001, 2002, 2003
    Free Software Foundation, Inc.
 
    This file is part of GDB.
@@ -22,7 +22,9 @@
 #ifndef I386_TDEP_H
 #define I386_TDEP_H
 
-#include "osabi.h"
+struct reggroup;
+struct gdbarch;
+struct frame_info;
 
 /* GDB's i386 target supports both the 32-bit Intel Architecture
    (IA-32) and the 64-bit AMD x86-64 architecture.  Internally it uses
@@ -53,9 +55,6 @@ enum struct_return
 /* i386 architecture specific information.  */
 struct gdbarch_tdep
 {
-  /* ABI.  */
-  enum gdb_osabi osabi;
-
   /* Number of SSE registers.  */
   int num_xmm_regs;
 
@@ -72,7 +71,12 @@ struct gdbarch_tdep
   /* 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;
 };
@@ -113,11 +117,10 @@ 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.  */
 
@@ -128,17 +131,26 @@ 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)
+/* 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)
+
+/* Register numbers of various important registers.  */
+
+#define I386_EAX_REGNUM                0 /* %eax */
+#define I386_EDX_REGNUM                2 /* %edx */
+#define I386_ESP_REGNUM                4 /* %esp */
+#define I386_EBP_REGNUM                5 /* %ebp */
+#define I386_EIP_REGNUM                8 /* %eip */
+#define I386_EFLAGS_REGNUM     9 /* %eflags */
+#define I386_ST0_REGNUM                16 /* %st(0) */
 
 #define I386_NUM_GREGS 16
 #define I386_NUM_FREGS 16
@@ -147,35 +159,39 @@ struct gdbarch_tdep
 #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)
+/* Size of the largest register.  */
+#define I386_MAX_REGISTER_SIZE 16
 
-#define I386_SSE_SIZEOF_REGS   (I386_SIZEOF_GREGS + I386_SIZEOF_FREGS \
-                                + I386_SIZEOF_XREGS)
+/* 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 the offset into the register array of the start of register
-   number REG.  */
-extern int i386_register_byte (int reg);
-
-/* Return the number of bytes of storage in GDB's register array
-   occupied by register REG.  */
-extern int i386_register_raw_size (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 *);
+\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 */
+