gdb-2.8.1

1 files changed, 493 insertions, 0 deletions

diff --git a/gdb/m-sun4.h b/gdb/m-sun4.h
new file mode 100644
index 00000000000..255cb56dc3c
--- /dev/null
+++ b/gdb/m-sun4.h
@@ -0,0 +1,493 @@
+/* Parameters for execution on a Sun 4, for GDB, the GNU debugger.
+   Copyright (C) 1986, 1987 Free Software Foundation, Inc.
+   Contributed by Michael Tiemann (tiemann@mcc.com)
+
+GDB is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY.  No author or distributor accepts responsibility to anyone
+for the consequences of using it or for whether it serves any
+particular purpose or works at all, unless he says so in writing.
+Refer to the GDB General Public License for full details.
+
+Everyone is granted permission to copy, modify and redistribute GDB,
+but only under the conditions described in the GDB General Public
+License.  A copy of this license is supposed to have been given to you
+along with GDB so you can know your rights and responsibilities.  It
+should be in a file named COPYING.  Among other things, the copyright
+notice and this notice must be preserved on all copies.
+
+In other words, go ahead and share GDB, but don't try to stop
+anyone else from sharing it farther.  Help stamp out software hoarding!
+*/
+
+#ifndef sun4
+#define sun4
+#endif
+
+/* Get rid of any system-imposed stack limit if possible.  */
+
+#define SET_STACK_LIMIT_HUGE
+
+/* Define this if the C compiler puts an underscore at the front
+   of external names before giving them to the linker.  */
+
+#define NAMES_HAVE_UNDERSCORE
+
+/* Debugger information will be in DBX format.  */
+
+#define READ_DBX_FORMAT
+
+/* Offset from address of function to start of its code.
+   Zero on most machines.  */
+
+#define FUNCTION_START_OFFSET 0
+
+/* Advance PC across any function entry prologue instructions
+   to reach some "real" code.  */
+
+#define SKIP_PROLOGUE(pc) \
+  { pc = skip_prologue (pc); }
+
+/* Immediately after a function call, return the saved pc.
+   Can't go through the frames for this because on some machines
+   the new frame is not set up until the new function executes
+   some instructions.  */
+
+/* On the Sun 4 under SunOS, the compile will leave a fake insn which
+   encodes the structure size being returned.  If we detect such
+   a fake insn, step past it.  */
+
+#define PC_ADJUST(pc) ((read_memory_integer (pc + 8, 4) & 0xfffffe00) == 0 ? pc+12 : pc+8)
+
+#define SAVED_PC_AFTER_CALL(frame) PC_ADJUST (read_register (RP_REGNUM))
+
+/* Address of end of stack space.  */
+
+#define STACK_END_ADDR 0xf000000
+
+/* Stack grows downward.  */
+
+#define INNER_THAN <
+
+/* Stack has strict alignment.  */
+
+#define STACK_ALIGN(ADDR) (((ADDR)+7)&-8)
+
+/* Sequence of bytes for breakpoint instruction.  */
+
+#define BREAKPOINT {0x91, 0xd0, 0x20, 0x01}
+
+/* Amount PC must be decremented by after a breakpoint.
+   This is often the number of bytes in BREAKPOINT
+   but not always.  */
+
+#define DECR_PC_AFTER_BREAK 0
+
+/* Nonzero if instruction at PC is a return instruction.  */
+/* For SPARC, this is either a "jmpl %o7+8,%g0" or "jmpl %i7+8,%g0".
+
+   Note: this does not work for functions returning structures under SunOS.  */
+#define ABOUT_TO_RETURN(pc) \
+  ((read_memory_integer (pc, 4)|0x00040000) == 0x81c7e008)
+
+/* Return 1 if P points to an invalid floating point value.  */
+
+#define INVALID_FLOAT(p, len) 0   /* Just a first guess; not checked */
+
+/* Say how long (ordinary) registers are.  */
+
+#define REGISTER_TYPE long
+
+/* Number of machine registers */
+
+#define NUM_REGS 72
+
+/* Initializer for an array of names of registers.
+   There should be NUM_REGS strings in this initializer.  */
+
+#define REGISTER_NAMES  \
+{ "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7",	\
+  "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7",	\
+  "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7",	\
+  "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7",	\
+								\
+  "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",	\
+  "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",	\
+  "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",	\
+  "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",	\
+                                                                \
+  "y", "psr", "wim", "tbr", "pc", "npc", "fpsr", "cpsr" };
+
+/* Register numbers of various important registers.
+   Note that some of these values are "real" register numbers,
+   and correspond to the general registers of the machine,
+   and some are "phony" register numbers which are too large
+   to be actual register numbers as far as the user is concerned
+   but do serve to get the desired values when passed to read_register.  */
+
+#define FP_REGNUM 30		/* Contains address of executing stack frame */
+#define RP_REGNUM 15		/* Contains return address value, *before* \
+				   any windows get switched.  */
+#define SP_REGNUM 14		/* Contains address of top of stack, \
+				   which is also the bottom of the frame.  */
+#define Y_REGNUM 64		/* Temp register for multiplication, etc.  */
+#define PS_REGNUM 65		/* Contains processor status */
+#define PC_REGNUM 68		/* Contains program counter */
+#define NPC_REGNUM 69           /* Contains next PC */
+#define FP0_REGNUM 32		/* Floating point register 0 */
+#define FPS_REGNUM 70		/* Floating point status register */
+#define CPS_REGNUM 71		/* Coprocessor status register */
+
+/* Total amount of space needed to store our copies of the machine's
+   register state, the array `registers'.  */
+#define REGISTER_BYTES (32*4+32*4+8*4)
+
+/* Index within `registers' of the first byte of the space for
+   register N.  */
+/* ?? */
+#define REGISTER_BYTE(N)  ((N)*4)
+
+/* Number of bytes of storage in the actual machine representation
+   for register N.  */
+
+/* On the SPARC, all regs are 4 bytes.  */
+
+#define REGISTER_RAW_SIZE(N) (4)
+
+/* Number of bytes of storage in the program's representation
+   for register N.  */
+
+/* On the SPARC, all regs are 4 bytes.  */
+
+#define REGISTER_VIRTUAL_SIZE(N) (4)
+
+/* Largest value REGISTER_RAW_SIZE can have.  */
+
+#define MAX_REGISTER_RAW_SIZE 8
+
+/* Largest value REGISTER_VIRTUAL_SIZE can have.  */
+
+#define MAX_REGISTER_VIRTUAL_SIZE 8
+
+/* Nonzero if register N requires conversion
+   from raw format to virtual format.  */
+
+#define REGISTER_CONVERTIBLE(N) (0)
+
+/* Convert data from raw format for register REGNUM
+   to virtual format for register REGNUM.  */
+
+#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO) \
+{ bcopy ((FROM), (TO), 4); }
+
+/* Convert data from virtual format for register REGNUM
+   to raw format for register REGNUM.  */
+
+#define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO)	\
+{ bcopy ((FROM), (TO), 4); }
+
+/* Return the GDB type object for the "standard" data type
+   of data in register N.  */
+
+#define REGISTER_VIRTUAL_TYPE(N) \
+ ((N) < 32 ? builtin_type_int : (N) < 64 ? builtin_type_float : builtin_type_int)
+
+/* Extract from an array REGBUF containing the (raw) register state
+   a function return value of type TYPE, and copy that, in virtual format,
+   into VALBUF.  */
+
+#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
+  bcopy ((int *)REGBUF+8, VALBUF, TYPE_LENGTH (TYPE))
+
+/* Write into appropriate registers a function return value
+   of type TYPE, given in virtual format.  */
+/* On sparc, values are returned in register %o0.  */
+#define STORE_RETURN_VALUE(TYPE,VALBUF) \
+  write_register_bytes (REGISTER_BYTE (8), VALBUF, TYPE_LENGTH (TYPE))
+
+/* Extract from an array REGBUF containing the (raw) register state
+   the address in which a function should return its structure value,
+   as a CORE_ADDR (or an expression that can be used as one).  */
+
+#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (read_memory_integer (((int *)(REGBUF))[SP_REGNUM]+(16*4), 4))
+
+/* Enable use of alternate code to read and write registers.  */
+
+#define NEW_SUN_PTRACE
+
+/* Enable use of alternate code for Sun's format of core dump file.  */
+
+#define NEW_SUN_CORE
+
+/* Do implement the attach and detach commands.  */
+
+#define ATTACH_DETACH
+
+/* It is safe to look for symsegs on a Sun, because Sun's ld
+   does not screw up with random garbage at end of file.  */
+
+#define READ_GDB_SYMSEGS
+
+/* The SPARC processor has register windows.  */
+   
+#define HAVE_REGISTER_WINDOWS
+
+/* Describe the pointer in each stack frame to the previous stack frame
+   (its caller).  */
+#include <machine/reg.h>
+
+#define GET_RWINDOW_REG(FRAME, REG) \
+  (read_memory_integer (&((struct rwindow *)FRAME)->REG, 4))
+
+/* FRAME_CHAIN takes a frame's nominal address
+   and produces the frame's chain-pointer.
+
+   FRAME_CHAIN_COMBINE takes the chain pointer and the frame's nominal address
+   and produces the nominal address of the caller frame.
+
+   However, if FRAME_CHAIN_VALID returns zero,
+   it means the given frame is the outermost one and has no caller.
+   In that case, FRAME_CHAIN_COMBINE is not used.  */
+
+/* In the case of the Sun 4, the frame-chain's nominal address
+   is held in the frame pointer register.
+
+   On the Sun4, the frame (in %fp) is %sp for the previous frame.
+   From the previous frame's %sp, we can find the previous frame's
+   %fp: it is in the save area just above the previous frame's %sp.  */
+
+#define FRAME_CHAIN(thisframe) \
+   GET_RWINDOW_REG (thisframe, rw_in[6])
+
+#define FRAME_CHAIN_VALID(chain, thisframe) \
+  (chain != 0 && (FRAME_SAVED_PC (thisframe, 0) >= first_object_file_end))
+
+#define FRAME_CHAIN_COMBINE(chain, thisframe) (chain)
+
+/* Define other aspects of the stack frame.  */
+
+#define FRAME_SAVED_PC(frame, next_frame) frame_saved_pc (frame, next_frame)
+
+/* If the argument is on the stack, it will be here.  */
+#define FRAME_ARGS_ADDRESS(fi) (fi.frame)
+
+#define FRAME_STRUCT_ARGS_ADDRESS(fi) (fi.frame)
+
+#define FRAME_LOCALS_ADDRESS(fi) (fi.frame)
+
+/* Set VAL to the number of args passed to frame described by FI.
+   Can set VAL to -1, meaning no way to tell.  */
+
+/* We can't tell how many args there are
+   now that the C compiler delays popping them.  */
+#define FRAME_NUM_ARGS(val,fi) (val = -1)
+
+/* Return number of bytes at start of arglist that are not really args.  */
+
+#define FRAME_ARGS_SKIP 68
+
+/* Put here the code to store, into a struct frame_saved_regs,
+   the addresses of the saved registers of frame described by FRAME_INFO.
+   This includes special registers such as pc and fp saved in special
+   ways in the stack frame.  sp is even more special:
+   the address we return for it IS the sp for the next frame.
+
+   On the Sun 4, the only time all registers are saved is when
+   a dummy frame is involved.  Otherwise, the only saved registers
+   are the LOCAL and IN registers which are saved as a result
+   of the "save/restore" opcodes.  This condition is determined
+   by address rather than by value.  */
+
+#define FRAME_FIND_SAVED_REGS(fi, frame_saved_regs)		\
+{ register int regnum;							\
+  register CORE_ADDR pc;						\
+  FRAME frame = (fi).frame;						\
+  FRAME next_frame = (fi).next_frame;					\
+  bzero (&frame_saved_regs, sizeof frame_saved_regs);			\
+  if ((fi).pc >= frame - CALL_DUMMY_LENGTH - 0x140			\
+      && (fi).pc <= frame)						\
+    {									\
+      for (regnum = 0; regnum < 32; regnum++)				\
+	(frame_saved_regs).regs[regnum+FP0_REGNUM] = frame + regnum * 4 - 0x80;\
+      for (regnum = 1; regnum < 8; regnum++)				\
+	(frame_saved_regs).regs[regnum] = frame + regnum * 4 - 0xa0;	\
+      for (regnum = 0; regnum < 8; regnum++)				\
+	(frame_saved_regs).regs[regnum+24] = frame + regnum * 4 - 0xc0;	\
+      for (regnum = 0; regnum < 8; regnum++)				\
+	(frame_saved_regs).regs[regnum+64] = frame + regnum * 4 - 0xe0;	\
+      frame = (fi).next_frame ?						\
+	(fi).next_frame : read_register (SP_REGNUM); 			\
+    }									\
+  else									\
+    {									\
+      for (regnum = 0; regnum < 16; regnum++)				\
+	(frame_saved_regs).regs[regnum+16] = frame + regnum * 4;	\
+    }									\
+  if (next_frame == 0) next_frame = read_register (SP_REGNUM);		\
+  for (regnum = 0; regnum < 8; regnum++)				\
+    (frame_saved_regs).regs[regnum+8] = next_frame + regnum * 4;	\
+  (frame_saved_regs).regs[FP_REGNUM] = frame + 14*4;			\
+  (frame_saved_regs).regs[SP_REGNUM] = frame;				\
+  (frame_saved_regs).regs[PC_REGNUM] = frame + 15*4;			\
+}
+
+/* Things needed for making the inferior call functions.  */
+
+/* Push an empty stack frame, to record the current PC, etc.  */
+
+/* NOTE: to be perfectly correct, we will probably have to restore the
+   IN registers (which were the OUT registers of the calling frame).  */
+
+#define PUSH_DUMMY_FRAME \
+{ extern char registers[];						\
+  register int regnum;							\
+  CORE_ADDR fp = read_register (FP_REGNUM);				\
+  CORE_ADDR pc = read_register (PC_REGNUM);				\
+  void do_save_insn ();							\
+  supply_register (RP_REGNUM, &pc);					\
+  do_save_insn (0x140);							\
+  fp = read_register (FP_REGNUM);					\
+  write_memory (fp - 0x80, &registers[REGISTER_BYTE (FP0_REGNUM)], 32 * 4);	\
+  write_memory (fp - 0xa0, &registers[REGISTER_BYTE (0)], 8 * 4);	\
+  write_memory (fp - 0xc0, &registers[REGISTER_BYTE (24)], 8 * 4);	\
+  write_memory (fp - 0xe0, &registers[REGISTER_BYTE (64)], 8 * 4);	\
+}
+
+/* Discard from the stack the innermost frame, 
+   restoring all saved registers.  */
+
+#define POP_FRAME  \
+{ register CORE_ADDR fp = read_register (FP_REGNUM);			\
+  register int regnum;							\
+  struct frame_saved_regs fsr;						\
+  struct frame_info fi;							\
+  char raw_buffer_fp[REGISTER_BYTES];					\
+  char raw_buffer_globals[REGISTER_BYTES];				\
+  char raw_buffer_outs[REGISTER_BYTES];					\
+  char raw_buffer_xx[REGISTER_BYTES];					\
+  void do_restore_insn ();						\
+  fi = get_frame_info (fp);						\
+  get_frame_saved_regs (&fi, &fsr);					\
+  if (fsr.regs[FP0_REGNUM])						\
+    read_memory (fsr.regs[FP0_REGNUM], raw_buffer_fp, 32 * 4);		\
+  if (fsr.regs[1])							\
+    read_memory (fsr.regs[1], raw_buffer_globals, 7 * 4);		\
+  if (fsr.regs[24])							\
+    read_memory (fsr.regs[24], raw_buffer_outs, 8 * 4);			\
+  if (fsr.regs[64])							\
+    read_memory (fsr.regs[64], raw_buffer_xx, 8 * 4);			\
+  do_restore_insn (fsr.regs);						\
+  if (fsr.regs[FP0_REGNUM])						\
+    write_register_bytes (REGISTER_BYTE (FP0_REGNUM), raw_buffer_fp, 32 * 4); \
+  if (fsr.regs[1])							\
+    write_register_bytes (REGISTER_BYTE (1), raw_buffer_globals, 7 * 4);\
+  if (fsr.regs[24])							\
+    write_register_bytes (REGISTER_BYTE (8), raw_buffer_outs, 8 * 4);	\
+  if (fsr.regs[64])							\
+    write_register_bytes (REGISTER_BYTE (64), raw_buffer_xx, 8 * 4);	\
+  set_current_frame (read_register (FP_REGNUM));			\
+}
+
+/* This sequence of words is the instructions
+
+   save %sp,-0x140,%sp
+   std	%f30,[%fp-0x08]
+   std	%f28,[%fp-0x10]
+   std	%f26,[%fp-0x18]
+   std	%f24,[%fp-0x20]
+   std	%f22,[%fp-0x28]
+   std	%f20,[%fp-0x30]
+   std	%f18,[%fp-0x38]
+   std	%f16,[%fp-0x40]
+   std	%f14,[%fp-0x48]
+   std	%f12,[%fp-0x50]
+   std	%f10,[%fp-0x58]
+   std	%f8,[%fp-0x60]
+   std	%f6,[%fp-0x68]
+   std	%f4,[%fp-0x70]
+   std	%f2,[%fp-0x78]
+   std	%f0,[%fp-0x80]
+   std	%g6,[%fp-0x88]
+   std	%g4,[%fp-0x90]
+   std	%g2,[%fp-0x98]
+   std	%g0,[%fp-0xa0]
+   std	%i6,[%fp-0xa8]
+   std	%i4,[%fp-0xb0]
+   std	%i2,[%fp-0xb8]
+   std	%i0,[%fp-0xc0]
+   nop ! stcsr	[%fp-0xc4]
+   nop ! stfsr	[%fp-0xc8]
+   nop ! wr	%npc,[%fp-0xcc]
+   nop ! wr	%pc,[%fp-0xd0]
+   rd	%tbr,%o0
+   st	%o0,[%fp-0xd4]
+   rd	%wim,%o1
+   st	%o0,[%fp-0xd8]
+   rd	%psr,%o0
+   st	%o0,[%fp-0xdc]
+   rd	%y,%o0
+   st	%o0,[%fp-0xe0]
+
+     /..* The arguments are pushed at this point by GDB;
+	no code is needed in the dummy for this.
+	The CALL_DUMMY_START_OFFSET gives the position of 
+	the following call instruction.  *../
+
+   ld	[%sp+0x58],%o5
+   ld	[%sp+0x44],%o4
+   ld	[%sp+0x50],%o3
+   ld	[%sp+0x4c],%o2
+   ld	[%sp+0x48],%o1
+   call 0x34343434
+   ld	[%sp+0x44],%o0
+   nop
+   ta 1
+   nop
+
+   note that this is 192 bytes, which is a multiple of 8 (not only 4) bytes.
+   note that the `call' insn is a relative, not an absolute call.
+   note that the `nop' at the end is needed to keep the trap from
+        clobbering things (if NPC pointed to garbage instead).
+
+We actually start executing at the `sethi', since the pushing of the
+registers (as arguments) is done by PUSH_DUMMY_FRAME.  If this were
+real code, the arguments for the function called by the CALL would be
+pushed between the list of ST insns and the CALL, and we could allow
+it to execute through.  But the arguments have to be pushed by GDB
+after the PUSH_DUMMY_FRAME is done, and we cannot allow these ST
+insns to be performed again, lest the registers saved be taken for
+arguments.  */
+
+#define CALL_DUMMY { 0x9de3bee0, 0xfd3fbff8, 0xf93fbff0, 0xf53fbfe8,	\
+		     0xf13fbfe0, 0xed3fbfd8, 0xe93fbfd0, 0xe53fbfc8,	\
+		     0xe13fbfc0, 0xdd3fbfb8, 0xd93fbfb0, 0xd53fbfa8,	\
+		     0xd13fbfa0, 0xcd3fbf98, 0xc93fbf90, 0xc53fbf88,	\
+		     0xc13fbf80, 0xcc3fbf78, 0xc83fbf70, 0xc43fbf68,	\
+		     0xc03fbf60, 0xfc3fbf58, 0xf83fbf50, 0xf43fbf48,	\
+		     0xf03fbf40, 0x01000000, 0x01000000, 0x01000000,	\
+		     0x01000000, 0x91580000, 0xd027bf50, 0x93500000,	\
+		     0xd027bf4c, 0x91480000, 0xd027bf48, 0x91400000,	\
+		     0xd027bf44, 0xda03a058, 0xd803a044, 0xd603a050,	\
+		     0xd403a04c, 0xd203a048, 0x40000000, 0xd003a044,	\
+		     0x01000000, 0x91d02001, 0x01000000, 0x01000000}
+
+#define CALL_DUMMY_LENGTH 192
+
+#define CALL_DUMMY_START_OFFSET 148
+
+#define CALL_DUMMY_STACK_ADJUST 68
+
+/* Insert the specified number of args and function address
+   into a call sequence of the above form stored at DUMMYNAME.  */
+
+#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, type)     \
+{									\
+  *(int *)((char *) dummyname+168) = (0x40000000|((fun-(pc+168))>>2));	\
+  if (TYPE_CODE (type) == TYPE_CODE_STRUCT || TYPE_CODE (type) == TYPE_CODE_UNION)	\
+    *(int *)((char *) dummyname+176) = (TYPE_LENGTH (type) & 0x1fff);	\
+}
+
+/* Sparc has no reliable single step ptrace call */
+
+#define NO_SINGLE_STEP 1
+
+/* KDB stuff flushed for now.  */