Initial revision

3 files changed, 272 insertions, 0 deletions

diff --git a/gdb/config/i386/go32.mt b/gdb/config/i386/go32.mt
new file mode 100644
index 00000000000..9b82c6426b4
--- /dev/null
+++ b/gdb/config/i386/go32.mt
@@ -0,0 +1,3 @@
+# Target: Intel 386 running DJGPP
+TDEPFILES= i386-tdep.o i387-tdep.o
+TM_FILE= tm-go32.h
diff --git a/gdb/config/i386/nm-go32.h b/gdb/config/i386/nm-go32.h
new file mode 100644
index 00000000000..183b60fa181
--- /dev/null
+++ b/gdb/config/i386/nm-go32.h
@@ -0,0 +1,57 @@
+/* Native definitions for Intel x86 running DJGPP.
+   Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#define NO_PTRACE_H
+
+#include "i386/nm-i386v.h"
+
+#define TARGET_HAS_HARDWARE_WATCHPOINTS
+
+#define TARGET_CAN_USE_HARDWARE_WATCHPOINT(type, cnt, ot) 1
+
+/* After a watchpoint trap, the PC points to the instruction after the
+   one that caused the trap.  Therefore we don't need to step over it.
+   But we do need to reset the status register to avoid another trap.  */
+
+#define HAVE_CONTINUABLE_WATCHPOINT
+
+#define STOPPED_BY_WATCHPOINT(W)  \
+  go32_stopped_by_watchpoint (inferior_pid)
+
+/* Use these macros for watchpoint insertion/removal.  */
+
+#define target_insert_watchpoint(addr, len, type)  \
+  go32_insert_watchpoint (inferior_pid, addr, len, 2)
+
+#define target_remove_watchpoint(addr, len, type)  \
+  go32_remove_watchpoint (inferior_pid, addr, len)
+
+#define target_insert_hw_breakpoint(addr, shadow)  \
+  go32_insert_hw_breakpoint(addr, shadow)
+  
+#define target_remove_hw_breakpoint(addr, shadow)  \
+  go32_remove_hw_breakpoint(addr, shadow)
+
+#define DECR_PC_AFTER_HW_BREAK 0
+
+#undef FLOAT_INFO
+#define FLOAT_INFO { i386_go32_float_info (); }
+
+extern void i386_go32_float_info (void);
+
diff --git a/gdb/config/i386/tm-go32.h b/gdb/config/i386/tm-go32.h
new file mode 100644
index 00000000000..84b82929ec5
--- /dev/null
+++ b/gdb/config/i386/tm-go32.h
@@ -0,0 +1,212 @@
+/* Target-dependent definitions for Intel x86 running DJGPP.
+   Copyright 1995, 1996, 1997 Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#include "i386/tm-i386v.h"
+
+/* Number of machine registers. */
+
+#undef NUM_FREGS
+#define NUM_FREGS 15
+#undef NUM_REGS
+#define NUM_REGS (16+NUM_FREGS)
+
+/* Initializer for an array of names of registers.  There should be
+   NUM_REGS strings in this initializer.  */
+
+/* The order of the first 8 registers must match the compiler's
+   numbering scheme (which is the same as the 386 scheme).  */
+
+#undef REGISTER_NAMES
+#define REGISTER_NAMES { "eax",  "ecx",   "edx",  "ebx",  \
+			 "esp",  "ebp",   "esi",  "edi",  \
+			 "eip",  "eflags","cs",   "ss",   \
+			 "ds",   "es",    "fs",   "gs",   \
+			 "st0",  "st1",   "st2",  "st3",  \
+                         "st4",  "st5",   "st6",  "st7",  \
+			 "fctrl","fstat", "ftag", "fcs",  \
+			 "fopsel","fip",  "fopoff" }
+
+#undef FP_REGNUM
+#define FP_REGNUM  5		/* (ebp) Contains addr of stack frame */
+#undef  SP_REGNUM
+#define SP_REGNUM  4		/* (usp) Contains address of top of stack */
+#undef  PS_REGNUM
+#define PS_REGNUM  9		/* (ps)  Contains processor status */
+#undef  PC_REGNUM
+#define PC_REGNUM  8		/* (eip) Contains program counter */
+#undef  FP0_REGNUM
+#define FP0_REGNUM 16		/* Floating point register 0 */
+#undef  FPC_REGNUM
+#define FPC_REGNUM 24		/* 80387 control register */
+#undef  FPCWD_REGNUM
+#define FPCWD_REGNUM FPC_REGNUM
+#undef  FPSWD_REGNUM
+#define FPSWD_REGNUM 25		/* 80387 status register */
+#undef  FPTWD_REGNUM
+#define FPTWD_REGNUM 26		/* 80387 tag register */
+#undef  FPIPO_REGNUM
+#define FPIPO_REGNUM 29		/* 80387 instruction pointer offset reg */
+#undef  FPIPS_REGNUM
+#define FPIPS_REGNUM 27		/* 80387 instruction pointer selector reg */
+#undef  FPOOS_REGNUM
+#define FPOOS_REGNUM 30		/* 80387 operand pointer offset reg */
+#undef  FPOPS_REGNUM
+#define FPOPS_REGNUM 28		/* 80387 operand pointer selector reg */
+
+/* Total amount of space needed to store our copies of the machine's
+   register state, the array `registers'.  */
+
+#undef REGISTER_BYTES
+#define REGISTER_BYTES (10*4 + 6*2 + 8*10 + 5*2 + 2*4)
+
+/* Index within `registers' of the first byte of the space for
+   register N.  */
+
+#undef REGISTER_BYTE
+#define REGBYTE_0  0
+#define REGBYTE_10 (REGBYTE_0+10*4)
+#define REGBYTE_16 (REGBYTE_10+6*2)
+#define REGBYTE_24 (REGBYTE_16+8*10)
+#define REGBYTE_29 (REGBYTE_24+5*2)
+#define REGISTER_BYTE(N) (((N) < 10) ? (N) * 4 : \
+                          (N) < 16 ? REGBYTE_10 +((N) - 10) * 2 : \
+                          (N) < 24 ? REGBYTE_16 +((N) - 16) * 10 : \
+                          (N) < 29 ? REGBYTE_24 +((N) - 24) * 2 : \
+                          REGBYTE_29 + ((N) - 29) * 4)
+
+/* Number of bytes of storage in the actual machine representation
+   for register N.  */
+
+#undef REGISTER_RAW_SIZE
+#define REGISTER_RAW_SIZE(N) ((N) < 10 ? 4 : (N) < 16 ? 2 : (N) < 24 ? 10 : \
+                              (N) < 29 ? 2 : 4)
+
+/* Number of bytes of storage in the program's representation
+   for register N. */
+
+#undef REGISTER_VIRTUAL_SIZE
+#define REGISTER_VIRTUAL_SIZE(N) REGISTER_RAW_SIZE(N)
+
+/* Largest value REGISTER_RAW_SIZE can have.  */
+
+#undef MAX_REGISTER_RAW_SIZE
+#define MAX_REGISTER_RAW_SIZE 10
+
+/* Largest value REGISTER_VIRTUAL_SIZE can have.  */
+
+#undef MAX_REGISTER_VIRTUAL_SIZE
+#define MAX_REGISTER_VIRTUAL_SIZE 10
+
+/* Nonzero if register N requires conversion
+   from raw format to virtual format.  */
+
+#undef REGISTER_CONVERTIBLE
+#define REGISTER_CONVERTIBLE(N) ((N) < FP0_REGNUM ? 0 :\
+                                 (N) < FPC_REGNUM ? 1 : 0)
+
+/* The host and target are i386 machines and the compiler supports
+   long doubles. Long doubles on the host therefore have the same
+   layout as a 387 FPU stack register. */
+
+#if defined(HAVE_LONG_DOUBLE) && defined(HOST_I386)
+#undef LD_I387
+#define LD_I387
+#endif
+
+/* Allow floating point numbers to be specified by a raw long double
+   10 hex bytes number, e.g. 1.0 can be input as
+   0x3fff8000000000000000 */
+
+#ifdef LD_I387
+#define HEX_LONG_DOUBLE_INPUT(base,p,len,target) \
+  ((base) == 16 && (len) == 20 \
+   && i387_hex_long_double_input ((p), (target)))
+#endif
+
+extern int i387_hex_long_double_input (char *p, long double *putithere);
+
+#undef REGISTER_CONVERT_TO_VIRTUAL
+#ifdef LD_I387
+#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \
+{ \
+  if (TYPE == REGISTER_VIRTUAL_TYPE (REGNUM)) \
+    { \
+      memcpy (TO, FROM, TYPE_LENGTH (TYPE)); \
+    } \
+  else \
+    { \
+      long double val = *((long double *)FROM); \
+      store_floating ((TO), TYPE_LENGTH (TYPE), val); \
+    } \
+}
+#else
+/* Convert data from raw format for register REGNUM in buffer FROM to
+   virtual format with type TYPE in buffer TO.  */
+#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \
+{ \
+  double val; \
+  i387_to_double ((FROM), (char *)&val); \
+  store_floating ((TO), TYPE_LENGTH (TYPE), val); \
+}
+#endif
+
+extern void i387_to_double PARAMS ((char *, char *));
+
+#undef REGISTER_CONVERT_TO_RAW
+#ifdef LD_I387
+#define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \
+{ \
+  if (TYPE == REGISTER_VIRTUAL_TYPE (REGNUM)) \
+    { \
+      memcpy (TO, FROM, TYPE_LENGTH (TYPE)); \
+    } \
+  else \
+    { \
+      long double val = extract_floating ((FROM), TYPE_LENGTH (TYPE)); \
+      *((long double *)TO) = val; \
+    } \
+}
+#else
+#define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \
+{ \
+  double val = extract_floating ((FROM), TYPE_LENGTH (TYPE)); \
+  double_to_i387((char *)&val, (TO)); \
+}
+#endif
+
+extern void double_to_i387 PARAMS ((char *, char *));
+
+/* Return the GDB type object for the "standard" data type of data in
+   register N.  */
+
+#undef REGISTER_VIRTUAL_TYPE
+#ifdef LD_I387
+#define REGISTER_VIRTUAL_TYPE(N) \
+  ((N < FP0_REGNUM) ? builtin_type_int : \
+   (N < FPC_REGNUM) ? builtin_type_long_double : builtin_type_int)
+#else
+#define REGISTER_VIRTUAL_TYPE(N) \
+  ((N < FP0_REGNUM) ? builtin_type_int : \
+   (N < FPC_REGNUM) ? builtin_type_double : builtin_type_int)
+#endif
+
+#undef TARGET_LONG_DOUBLE_BIT
+#define TARGET_LONG_DOUBLE_BIT 96
+
+#define NAMES_HAVE_UNDERSCORE