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* The following block of changes add support for debugging assembly

Browse Source 
source files.
	* breakpoint.c (resolve_sal_pc):  Prevent crash when pc isn't
	associated with a function.
	* buildsym.c (record_line start_symtab end_symtab):  Don't delete
	symtabs which only have line numbers (but no other debug symbols).
	* dbxread.c (read_dbx_symtab end_psymtab):  Ditto.

	* remote-sim.c:  New functions gdbsim_insert/remove_breakpoint.  Use
	intrinsic simulator breakpoints if available, otherwise do it the
 	hard way.
	* configure.tgt:  Add d30v.
	* d30v-tdep.c:  New file.
	* config/d30v/d30v.mt, config/d30v/tm-d30v.h:  New files.
This commit is contained in:
Stu Grossman 1997-09-25 01:26:36 +00:00
parent 4d5d36f015
commit 45a70ed653
9 changed files with 1486 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
gdb/.Sanitize
View File

@ -74,6 +74,20 @@ else
fi
fi
d30v_files="d30v-tdep.c"
if ( echo $* | grep keep\-d30v > /dev/null ) ; then
keep_these_too="${d30v_files} ${keep_these_too}"
if [ -n "${verbose}" ] ; then
echo Keeping ${d30v_files}
fi
else
lose_these_too="${d30v_files} ${lose_these_too}"
if [ -n "${verbose}" ] ; then
echo Deleting ${d30v_files}
fi
fi
# All files listed between the "Things-to-keep:" line and the
# "Files-to-sed:" line will be kept. All other files will be removed.
# Directories listed in this section will have their own Sanitize
@ -654,6 +668,33 @@ else
done
fi
if ( echo $* | grep keep\-d30v > /dev/null ) ; then
for i in * ; do
if test ! -d $i && (grep sanitize-d30v $i > /dev/null) ; then
if [ -n "${verbose}" ] ; then
echo Keeping d30v stuff in $i
fi
fi
done
else
for i in * ; do
if test ! -d $i && (grep sanitize-d30v $i > /dev/null) ; then
if [ -n "${verbose}" ] ; then
echo Removing traces of \"d30v\" from $i...
fi
cp $i new
sed '/start\-sanitize\-d30v/,/end-\sanitize\-d30v/d' < $i > new
if [ -n "${safe}" -a ! -f .Recover/$i ] ; then
if [ -n "${verbose}" ] ; then
echo Caching $i in .Recover...
fi
mv $i .Recover
fi
mv new $i
fi
done
fi
for i in * ; do
if test ! -d $i && (grep sanitize $i > /dev/null) ; then
echo '***' Some mentions of Sanitize are still left in $i! 1>&2

19
gdb/ChangeLog
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@ -1,3 +1,22 @@
Wed Sep 24 18:12:47 1997 Stu Grossman <grossman@babylon-5.cygnus.com>
* The following block of changes add support for debugging assembly
source files.
* breakpoint.c (resolve_sal_pc): Prevent crash when pc isn't
associated with a function.
* buildsym.c (record_line start_symtab end_symtab): Don't delete
symtabs which only have line numbers (but no other debug symbols).
* dbxread.c (read_dbx_symtab end_psymtab): Ditto.
* remote-sim.c: New functions gdbsim_insert/remove_breakpoint. Use
intrinsic simulator breakpoints if available, otherwise do it the
hard way.
start-sanitize-d30v
* configure.tgt: Add d30v.
* d30v-tdep.c: New file.
* config/d30v/d30v.mt, config/d30v/tm-d30v.h: New files.
end-sanitize-d30v
Tue Sep 23 11:24:13 1997 Stan Shebs <shebs@andros.cygnus.com>
* Makefile.in (ALLCONFIG): Remove, inaccurate and never used.

9
gdb/buildsym.c
View File

@ -55,6 +55,10 @@ static struct pending_block *pending_blocks = NULL;
static struct pending *free_pendings;
/* Non-zero if symtab has line number info. This prevents an otherwise empty
symtab from being tossed. */
static int have_line_numbers;
static int
compare_line_numbers PARAMS ((const void *, const void *));
@ -714,6 +718,7 @@ record_line (subfile, line, pc)
xmalloc (sizeof (struct linetable)
+ subfile->line_vector_length * sizeof (struct linetable_entry));
subfile->line_vector->nitems = 0;
have_line_numbers = 1;
}
if (subfile->line_vector->nitems + 1 >= subfile->line_vector_length)
@ -770,6 +775,7 @@ start_symtab (name, dirname, start_addr)
file_symbols = NULL;
global_symbols = NULL;
within_function = 0;
have_line_numbers = 0;
/* Context stack is initially empty. Allocate first one with room for
10 levels; reuse it forever afterward. */
@ -886,7 +892,8 @@ end_symtab (end_addr, objfile, section)
if (pending_blocks == NULL
&& file_symbols == NULL
&& global_symbols == NULL)
&& global_symbols == NULL
&& have_line_numbers == 0)
{
/* Ignore symtabs that have no functions with real debugging info */
blockvector = NULL;

33
gdb/config/d30v/.Sanitize Normal file
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@ -0,0 +1,33 @@
# .Sanitize for devo/gdb/config/d30v
# Each directory to survive its way into a release will need a file
# like this one called "./.Sanitize". All keyword lines must exist,
# and must exist in the order specified by this file. Each directory
# in the tree will be processed, top down, in the following order.
# Hash started lines like this one are comments and will be deleted
# before anything else is done. Blank lines will also be squashed
# out.
# The lines between the "Do-first:" line and the "Things-to-keep:"
# line are executed as a /bin/sh shell script before anything else is
# done in this directory.
Do-first:
# All files listed between the "Things-to-keep:" line and the
# "Files-to-sed:" line will be kept. All other files will be removed.
# Directories listed in this section will have their own Sanitize
# called. Directories not listed will be removed in their entirety
# with rm -rf.
Things-to-keep:
d30v.mt
tm-d30v.h
Things-to-lose:
Do-last:
# End of file.

6
gdb/config/d30v/d30v.mt Normal file
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@ -0,0 +1,6 @@
# Target: Mitsubishi D30V processor
TDEPFILES= d30v-tdep.o
TM_FILE= tm-d30v.h
SIM_OBS= remote-sim.o
SIM= ../sim/d30v/libsim.a -lm

304
gdb/config/d30v/tm-d30v.h Normal file
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@ -0,0 +1,304 @@
/* Target-specific definition for the Mitsubishi D30V
Copyright (C) 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. */
#ifndef TM_D30V_H
#define TM_D30V_H
/* Define the bit, byte, and word ordering of the machine. */
#define TARGET_BYTE_ORDER BIG_ENDIAN
/* Offset from address of function to start of its code.
Zero on most machines. */
#define FUNCTION_START_OFFSET 0
/* these are the addresses the D30V-EVA board maps data */
/* and instruction memory to. */
#define DMEM_START 0x2000000
#define IMEM_START 0x1000000
#define STACK_START 0x2007ffe
#ifdef __STDC__ /* Forward decls for prototypes */
struct frame_info;
struct frame_saved_regs;
struct type;
struct value;
#endif
/* Advance PC across any function entry prologue instructions
to reach some "real" code. */
extern CORE_ADDR d30v_skip_prologue ();
#define SKIP_PROLOGUE(ip) \
{(ip) = d30v_skip_prologue(ip);}
/* Stack grows downward. */
#define INNER_THAN <
/* for a breakpoint, use "dbt || nop" */
#define BREAKPOINT {0x00, 0xb0, 0x00, 0x00,\
0x00, 0xf0, 0x00, 0x00}
/* If your kernel resets the pc after the trap happens you may need to
define this before including this file. */
#define DECR_PC_AFTER_BREAK 0
#define REGISTER_NAMES \
{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
"r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \
"r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", \
"r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39", \
"r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47", \
"r48", "r49", "r50", "r51", "r52", "r53", "r54", "r55", \
"r56", "r57", "r58", "r59", "r60", "r61", "r62", "r63", \
"spi", "spu", \
"psw", "bpsw", "pc", "bpc", "dpsw", "dpc", "cr6", "rpt_c", \
"rpt_s", "rpt_e", "mod_s", "mod_e", "cr12", "cr13", "iba", "eit_vb",\
"int_s", "int_m", "a0", "a1" \
}
#define NUM_REGS 86
/* 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 R0_REGNUM 0
#define FP_REGNUM 11
#define LR_REGNUM 62
#define SP_REGNUM 63
#define SPI_REGNUM 64 /* Interrupt stack pointer */
#define SPU_REGNUM 65 /* User stack pointer */
#define CREGS_START 66
#define PSW_REGNUM (CREGS_START + 0) /* psw, bpsw, or dpsw??? */
#define PSW_SM 0x80000000 /* Stack mode: 0 == interrupt (SPI),
1 == user (SPU) */
#define BPSW_REGNUM (CREGS_START + 1) /* Backup PSW (on interrupt) */
#define PC_REGNUM (CREGS_START + 2) /* pc, bpc, or dpc??? */
#define BPC_REGNUM (CREGS_START + 3) /* Backup PC (on interrupt) */
#define DPSW_REGNUM (CREGS_START + 4) /* Backup PSW (on debug trap) */
#define DPC_REGNUM (CREGS_START + 5) /* Backup PC (on debug trap) */
#define RPT_C_REGNUM (CREGS_START + 7) /* Loop count */
#define RPT_S_REGNUM (CREGS_START + 8) /* Loop start address*/
#define RPT_E_REGNUM (CREGS_START + 9) /* Loop end address */
#define MOD_S_REGNUM (CREGS_START + 10)
#define MOD_E_REGNUM (CREGS_START + 11)
#define IBA_REGNUM (CREGS_START + 14) /* Instruction break address */
#define EIT_VB_REGNUM (CREGS_START + 15) /* Vector base address */
#define INT_S_REGNUM (CREGS_START + 16) /* Interrupt status */
#define INT_M_REGNUM (CREGS_START + 17) /* Interrupt mask */
#define A0_REGNUM 84
#define A1_REGNUM 85
/* Say how much memory is needed to store a copy of the register set */
#define REGISTER_BYTES ((NUM_REGS - 2) * 4 + 2 * 8)
/* Index within `registers' of the first byte of the space for
register N. */
#define REGISTER_BYTE(N) \
( ((N) >= A0_REGNUM) ? ( ((N) - A0_REGNUM) * 8 + A0_REGNUM * 4 ) : ((N) * 4) )
/* Number of bytes of storage in the actual machine representation
for register N. */
#define REGISTER_RAW_SIZE(N) ( ((N) >= A0_REGNUM) ? 8 : 4 )
/* Number of bytes of storage in the program's representation
for register N. */
#define REGISTER_VIRTUAL_SIZE(N) REGISTER_RAW_SIZE(N)
/* 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
/* Return the GDB type object for the "standard" data type
of data in register N. */
#define REGISTER_VIRTUAL_TYPE(N) \
( ((N) < A0_REGNUM ) ? builtin_type_long : builtin_type_long_long)
/* Writing to r0 is a noop (not an error or exception or anything like
that, however). */
#define CANNOT_STORE_REGISTER(regno) ((regno) == R0_REGNUM)
void d30v_do_registers_info PARAMS ((int regnum, int fpregs));
#define DO_REGISTERS_INFO d30v_do_registers_info
/* Store the address of the place in which to copy the structure the
subroutine will return. This is called from call_function.
We store structs through a pointer passed in R2 */
#define STORE_STRUCT_RETURN(ADDR, SP) \
{ write_register (2, (ADDR)); }
/* Write into appropriate registers a function return value
of type TYPE, given in virtual format.
Things always get returned in R2/R3 */
#define STORE_RETURN_VALUE(TYPE,VALBUF) \
write_register_bytes (REGISTER_BYTE(2), 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) (*(CORE_ADDR *)(REGBUF))
/* Define other aspects of the stack frame.
we keep a copy of the worked out return pc lying around, since it
is a useful bit of info */
#define EXTRA_FRAME_INFO \
CORE_ADDR return_pc; \
CORE_ADDR dummy; \
int frameless; \
int size;
#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \
d30v_init_extra_frame_info(fromleaf, fi)
extern void d30v_init_extra_frame_info PARAMS (( int fromleaf, struct frame_info *fi ));
/* A macro that tells us whether the function invocation represented
by FI does not have a frame on the stack associated with it. If it
does not, FRAMELESS is set to 1, else 0. */
#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
(FRAMELESS) = frameless_look_for_prologue(FI)
#define FRAME_CHAIN(FRAME) d30v_frame_chain(FRAME)
#define FRAME_CHAIN_VALID(chain,frame) \
((chain) != 0 && (frame) != 0 && (frame)->pc > IMEM_START)
#define FRAME_SAVED_PC(FRAME) ((FRAME)->return_pc)
#define FRAME_ARGS_ADDRESS(fi) (fi)->frame
#define FRAME_LOCALS_ADDRESS(fi) (fi)->frame
/* Immediately after a function call, return the saved pc. We can't */
/* use frame->return_pc beause that is determined by reading R13 off the */
/*stack and that may not be written yet. */
#define SAVED_PC_AFTER_CALL(frame) ((read_register(LR_REGNUM) << 2) | IMEM_START)
/* 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 */
#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 0
/* 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. */
#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
d30v_frame_find_saved_regs(frame_info, &(frame_saved_regs))
extern void d30v_frame_find_saved_regs PARAMS ((struct frame_info *, struct frame_saved_regs *));
#define NAMES_HAVE_UNDERSCORE
/*
DUMMY FRAMES. Need these to support inferior function calls. They work
like this on D30V: First we set a breakpoint at 0 or __start. Then we push
all the registers onto the stack. Then put the function arguments in the proper
registers and set r13 to our breakpoint address. Finally call the function directly.
When it hits the breakpoint, clear the break point and pop the old register contents
off the stack.
*/
#define CALL_DUMMY { }
#define PUSH_DUMMY_FRAME
#define CALL_DUMMY_START_OFFSET 0
#define CALL_DUMMY_LOCATION AT_ENTRY_POINT
#define CALL_DUMMY_BREAKPOINT_OFFSET (0)
extern CORE_ADDR d30v_call_dummy_address PARAMS ((void));
#define CALL_DUMMY_ADDRESS() d30v_call_dummy_address()
#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \
sp = d30v_fix_call_dummy (dummyname, pc, fun, nargs, args, type, gcc_p)
#define PC_IN_CALL_DUMMY(pc, sp, frame_address) ( pc == IMEM_START + 4 )
extern CORE_ADDR d30v_fix_call_dummy PARAMS ((char *, CORE_ADDR, CORE_ADDR,
int, struct value **,
struct type *, int));
#define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \
sp = d30v_push_arguments((nargs), (args), (sp), (struct_return), (struct_addr))
extern CORE_ADDR d30v_push_arguments PARAMS ((int, struct value **, CORE_ADDR, int, CORE_ADDR));
/* 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) \
d30v_extract_return_value(TYPE, REGBUF, VALBUF)
extern void
d30v_extract_return_value PARAMS ((struct type *, char *, char *));
/* Discard from the stack the innermost frame,
restoring all saved registers. */
#define POP_FRAME d30v_pop_frame();
extern void d30v_pop_frame PARAMS((void));
#define REGISTER_SIZE 4
/* Need to handle SP special, as we need to select between spu and spi. */
#define TARGET_READ_SP() ((read_register (PSW_REGNUM) & PSW_SM) \
? read_register (SPU_REGNUM) \
: read_register (SPI_REGNUM))
#define TARGET_WRITE_SP(val) ((read_register (PSW_REGNUM) & PSW_SM) \
? write_register (SPU_REGNUM, (val)) \
: write_register (SPI_REGNUM, (val)))
/* Turn this on to cause remote-sim.c to use sim_set/clear_breakpoint. */
#define SIM_HAS_BREAKPOINTS
#endif /* TM_D30V_H */

3
gdb/configure.tgt
View File

@ -53,7 +53,10 @@ c1-*-*) gdb_target=convex ;;
c2-*-*) gdb_target=convex ;;
d10v-*-*) gdb_target=d10v ;;
# start-sanitize-d30v
d30v-*-*) gdb_target=d30v ;;
# end-sanitize-d30v
h8300-*-*) gdb_target=h8300 ;;
h8500-*-*) gdb_target=h8500 ;;

1021
gdb/d30v-tdep.c Normal file
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File diff suppressed because it is too large Load Diff

53
gdb/remote-sim.c
View File

@ -810,6 +810,55 @@ gdbsim_mourn_inferior ()
generic_mourn_inferior ();
}
static int
gdbsim_insert_breakpoint (addr, contents_cache)
CORE_ADDR addr;
char *contents_cache;
{
#ifdef SIM_HAS_BREAKPOINTS
SIM_RC retcode;
retcode = sim_set_breakpoint (gdbsim_desc, addr);
switch (retcode)
{
case SIM_RC_OK:
return 0;
case SIM_RC_INSUFFICIENT_RESOURCES:
return ENOMEM;
default:
return EIO;
}
#else
return memory_insert_breakpoint (addr, contents_cache);
#endif
}
static int
gdbsim_remove_breakpoint (addr, contents_cache)
CORE_ADDR addr;
char *contents_cache;
{
#ifdef SIM_HAS_BREAKPOINTS
SIM_RC retcode;
retcode = sim_clear_breakpoint (gdbsim_desc, addr);
switch (retcode)
{
case SIM_RC_OK:
case SIM_RC_UNKNOWN_BREAKPOINT:
return 0;
case SIM_RC_INSUFFICIENT_RESOURCES:
return ENOMEM;
default:
return EIO;
}
#else
return memory_remove_breakpoint (addr, contents_cache);
#endif
}
/* Pass the command argument through to the simulator verbatim. The
simulator must do any command interpretation work. */
@ -854,8 +903,8 @@ struct target_ops gdbsim_ops = {
gdbsim_prepare_to_store, /* to_prepare_to_store */
gdbsim_xfer_inferior_memory, /* to_xfer_memory */
gdbsim_files_info, /* to_files_info */
memory_insert_breakpoint, /* to_insert_breakpoint */
memory_remove_breakpoint, /* to_remove_breakpoint */
gdbsim_insert_breakpoint, /* to_insert_breakpoint */
gdbsim_remove_breakpoint, /* to_remove_breakpoint */
NULL, /* to_terminal_init */
NULL, /* to_terminal_inferior */
NULL, /* to_terminal_ours_for_output */