2004-01-09 Elena Zannoni <ezannoni@redhat.com>

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

diff --git a/gdb/arm-tdep.h b/gdb/arm-tdep.h
index 197d4392aaf66fbdbc115e1b9fd4d4b295d348e4..26f3a83a97379d5fb53f40dab0552cbd075215c7 100644 (file)
--- a/gdb/arm-tdep.h
+++ b/gdb/arm-tdep.h
@@ -1,5 +1,5 @@
 /* Common target dependent code for GDB on ARM systems.
-   Copyright 2002 Free Software Foundation, Inc.
+   Copyright 2002, 2003 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -25,25 +25,30 @@
    the user is concerned but do serve to get the desired values when
    passed to read_register.  */
 
-#define ARM_A1_REGNUM 0                /* first integer-like argument */
-#define ARM_A4_REGNUM 3                /* last integer-like argument */
-#define ARM_AP_REGNUM 11
-#define ARM_SP_REGNUM 13       /* Contains address of top of stack */
-#define ARM_LR_REGNUM 14       /* address to return to from a function call */
-#define ARM_PC_REGNUM 15       /* Contains program counter */
-#define ARM_F0_REGNUM 16       /* first floating point register */
-#define ARM_F3_REGNUM 19       /* last floating point argument register */
-#define ARM_F7_REGNUM 23       /* last floating point register */
-#define ARM_FPS_REGNUM 24      /* floating point status register */
-#define ARM_PS_REGNUM 25       /* Contains processor status */
-
-#define ARM_FP_REGNUM 11       /* Frame register in ARM code, if used.  */
-#define THUMB_FP_REGNUM 7      /* Frame register in Thumb code, if used.  */
-
-#define ARM_NUM_ARG_REGS       4
-#define ARM_LAST_ARG_REGNUM    ARM_A4_REGNUM
-#define ARM_NUM_FP_ARG_REGS    4
-#define ARM_LAST_FP_ARG_REGNUM ARM_F3_REGNUM
+enum gdb_regnum {
+  ARM_A1_REGNUM = 0,           /* first integer-like argument */
+  ARM_A4_REGNUM = 3,           /* last integer-like argument */
+  ARM_AP_REGNUM = 11,
+  ARM_SP_REGNUM = 13,          /* Contains address of top of stack */
+  ARM_LR_REGNUM = 14,          /* address to return to from a function call */
+  ARM_PC_REGNUM = 15,          /* Contains program counter */
+  ARM_F0_REGNUM = 16,          /* first floating point register */
+  ARM_F3_REGNUM = 19,          /* last floating point argument register */
+  ARM_F7_REGNUM = 23,          /* last floating point register */
+  ARM_FPS_REGNUM = 24,         /* floating point status register */
+  ARM_PS_REGNUM = 25,          /* Contains processor status */
+  ARM_FP_REGNUM = 11,          /* Frame register in ARM code, if used.  */
+  THUMB_FP_REGNUM = 7,         /* Frame register in Thumb code, if used.  */
+  ARM_NUM_ARG_REGS = 4, 
+  ARM_LAST_ARG_REGNUM = ARM_A4_REGNUM,
+  ARM_NUM_FP_ARG_REGS = 4,
+  ARM_LAST_FP_ARG_REGNUM = ARM_F3_REGNUM
+};
+
+/* Used in target-specific code when we need to know the size of the
+   largest type of register we need to handle.  */
+#define ARM_MAX_REGISTER_RAW_SIZE      12
+#define ARM_MAX_REGISTER_VIRTUAL_SIZE  8
 
 /* Size of integer registers.  */
 #define INT_REGISTER_RAW_SIZE          4
@@ -99,6 +104,52 @@
 #define FLAG_C         0x20000000
 #define FLAG_V         0x10000000
 
+/* Type of floating-point code in use by inferior.  There are really 3 models
+   that are traditionally supported (plus the endianness issue), but gcc can
+   only generate 2 of those.  The third is APCS_FLOAT, where arguments to
+   functions are passed in floating-point registers.  
+
+   In addition to the traditional models, VFP adds two more. 
+
+   If you update this enum, don't forget to update fp_model_strings in 
+   arm-tdep.c.  */
+
+enum arm_float_model
+{
+  ARM_FLOAT_AUTO,      /* Automatic detection.  Do not set in tdep.  */
+  ARM_FLOAT_SOFT_FPA,  /* Traditional soft-float (mixed-endian on LE ARM).  */
+  ARM_FLOAT_FPA,       /* FPA co-processor.  GCC calling convention.  */
+  ARM_FLOAT_SOFT_VFP,  /* Soft-float with pure-endian doubles.  */
+  ARM_FLOAT_VFP,       /* Full VFP calling convention.  */
+  ARM_FLOAT_LAST       /* Keep at end.  */
+};
+
+/* A method to the setting based on user's choice and ABI setting.  */
+enum arm_float_model arm_get_fp_model (struct gdbarch *);
+
+/* Target-dependent structure in gdbarch.  */
+struct gdbarch_tdep
+{
+  enum arm_float_model fp_model; /* Floating point calling conventions.  */
+
+  CORE_ADDR lowest_pc;         /* Lowest address at which instructions 
+                                  will appear.  */
+
+  const char *arm_breakpoint;  /* Breakpoint pattern for an ARM insn.  */
+  int arm_breakpoint_size;     /* And its size.  */
+  const char *thumb_breakpoint;        /* Breakpoint pattern for an ARM insn.  */
+  int thumb_breakpoint_size;   /* And its size.  */
+
+  int jb_pc;                   /* Offset to PC value in jump buffer. 
+                                  If this is negative, longjmp support
+                                  will be disabled.  */
+  size_t jb_elt_size;          /* And the size of each entry in the buf.  */
+};
+
+#ifndef LOWEST_PC
+#define LOWEST_PC (gdbarch_tdep (current_gdbarch)->lowest_pc)
+#endif
+
 /* Prototypes for internal interfaces needed by more than one MD file.  */
 int arm_pc_is_thumb_dummy (CORE_ADDR);
 
@@ -106,3 +157,4 @@ int arm_pc_is_thumb (CORE_ADDR);
 
 CORE_ADDR thumb_get_next_pc (CORE_ADDR);
 
+CORE_ADDR arm_get_next_pc (CORE_ADDR);