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From Eli. Bring go32 target up-to-date with recent GDB i386 changes.

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This commit is contained in:
Andrew Cagney 2000-02-29 08:16:40 +00:00
parent 9d271fd8b3
commit 024094993c
5 changed files with 60 additions and 23 deletions
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16
gdb/ChangeLog
View file

@ -1,3 +1,19 @@
Tue Feb 29 18:47:58 2000 Andrew Cagney <cagney@b1.cygnus.com>
From 2000-02-23 Eli Zaretskii <eliz@is.elta.co.il>:
* config/i386/nm-go32.h (FLOAT_INFO): Remove macro definition.
(top level): Add prototypes for go32_* functions.
* config/i386/tm-go32.h (I386_DJGPP_TARGET): Define.
(FRAME_CHAIN, FRAMELESS_FUNCTION_INVOCATION, FRAME_SAVED_PC):
Override definitions from tm-i386.h.
(REGISTER_VIRTUAL_TYPE): Remove macro definition.
* i386-tdep.c (i386_extract_return_value)
[I386_AIX_TARGET || I386_GNULINUX_TARGET]: Add I386_DJGPP_TARGET
to the list of targets which return FP values in FP registers.
* i386-tdep.c (i386_extract_return_value): Add FIXME recommending
that this function be re-implemented using multi-arch.
Tue Feb 29 18:40:08 2000 Andrew Cagney <cagney@b1.cygnus.com>
From 2000-02-23 Eli Zaretskii <eliz@is.elta.co.il>:

11
gdb/config/i386/nm-go32.h
View file

@ -48,6 +48,7 @@
#define TARGET_REGION_OK_FOR_HW_WATCHPOINT(addr,len) \
go32_region_ok_for_watchpoint(addr,len)
extern int go32_region_ok_for_watchpoint (CORE_ADDR, int);
/* 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.
@ -60,24 +61,24 @@
#define target_stopped_data_address() \
go32_stopped_by_watchpoint (inferior_pid, 1)
extern CORE_ADDR go32_stopped_by_watchpoint (int, int);
/* Use these macros for watchpoint insertion/removal. */
#define target_insert_watchpoint(addr, len, type) \
go32_insert_watchpoint (inferior_pid, addr, len, type)
extern int go32_insert_watchpoint (int, CORE_ADDR, int, int);
#define target_remove_watchpoint(addr, len, type) \
go32_remove_watchpoint (inferior_pid, addr, len, type)
extern int go32_remove_watchpoint (int, CORE_ADDR, int, int);
#define target_insert_hw_breakpoint(addr, shadow) \
go32_insert_hw_breakpoint(addr, shadow)
extern int go32_insert_hw_breakpoint (CORE_ADDR, void *);
#define target_remove_hw_breakpoint(addr, shadow) \
go32_remove_hw_breakpoint(addr, shadow)
extern int go32_remove_hw_breakpoint (CORE_ADDR, void *);
#define DECR_PC_AFTER_HW_BREAK 0
#undef FLOAT_INFO
#define FLOAT_INFO { i386_go32_float_info (); }
extern void i386_go32_float_info (void);

44
gdb/config/i386/tm-go32.h
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@ -1,5 +1,5 @@
/* Target-dependent definitions for Intel x86 running DJGPP.
Copyright 1995, 1996, 1997 Free Software Foundation, Inc.
Copyright 1995, 1996, 1997, 1999, 2000 Free Software Foundation, Inc.
This file is part of GDB.
@ -18,6 +18,10 @@
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef TM_GO32_H
#define TM_GO32_H
#define I386_DJGPP_TARGET
#undef HAVE_SSE_REGS /* FIXME! go32-nat.c needs to support XMMi registers */
#define HAVE_I387_REGS
@ -60,18 +64,30 @@ extern int i387_hex_long_double_input (char *p, long double *putithere);
*((long double *)(TO)) = val; \
}
/* Return the GDB type object for the "standard" data type of data in
register N. Perhaps si and di should go here, but potentially they
could be used for things other than address. */
#define REGISTER_VIRTUAL_TYPE(N) \
(((N) == PC_REGNUM || (N) == FP_REGNUM || (N) == SP_REGNUM) \
? lookup_pointer_type (builtin_type_void) \
: IS_FP_REGNUM(N) ? builtin_type_long_double \
: IS_SSE_REGNUM(N) ? builtin_type_v4sf \
: builtin_type_int)
#endif /* LD_I387 */
#undef TARGET_LONG_DOUBLE_BIT
#define TARGET_LONG_DOUBLE_BIT 96
/* FRAME_CHAIN takes a frame's nominal address and produces the frame's
chain-pointer.
In the case of the i386, the frame's nominal address
is the address of a 4-byte word containing the calling frame's address.
DJGPP doesn't have any special frames for signal handlers, they are
just normal C functions. */
#undef FRAME_CHAIN
#define FRAME_CHAIN(thisframe) \
(!inside_entry_file ((thisframe)->pc) ? \
read_memory_integer ((thisframe)->frame, 4) :\
0)
/* 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. */
#undef FRAMELESS_FUNCTION_INVOCATION
#define FRAMELESS_FUNCTION_INVOCATION(FI) \
(frameless_look_for_prologue(FI))
#undef FRAME_SAVED_PC
#define FRAME_SAVED_PC(FRAME) (read_memory_integer ((FRAME)->frame + 4, 4))
#endif /* LD_I387 */
#endif /* TM_GO32_H */

1
gdb/config/i386/xm-go32.h
View file

@ -36,3 +36,4 @@
#define DIRNAME_SEPARATOR ';'
#define HOST_I386
typedef unsigned char fd_mask;

11
gdb/i386-tdep.c
View file

@ -702,9 +702,12 @@ i386_extract_return_value (type, regbuf, valbuf)
char regbuf[REGISTER_BYTES];
char *valbuf;
{
/* On AIX and i386 GNU/Linux, floating point values are returned in
floating point registers. */
#if defined(I386_AIX_TARGET) || defined(I386_GNULINUX_TARGET)
/* On AIX, i386 GNU/Linux and DJGPP, floating point values are
returned in floating point registers. */
/* FIXME: cagney/2000-02-29: This function needs to be rewritten
using multi-arch. Please don't keep adding to this #ifdef
spaghetti. */
#if defined(I386_AIX_TARGET) || defined(I386_GNULINUX_TARGET) || defined(I386_DJGPP_TARGET)
if (TYPE_CODE_FLT == TYPE_CODE (type))
{
double d;
@ -720,7 +723,7 @@ i386_extract_return_value (type, regbuf, valbuf)
store_floating (valbuf, TYPE_LENGTH (type), d);
}
else
#endif /* I386_AIX_TARGET || I386_GNULINUX_TARGET*/
#endif /* I386_AIX_TARGET || I386_GNULINUX_TARGET || I386_DJGPP_TARGET */
{
#if defined(LOW_RETURN_REGNUM)
int len = TYPE_LENGTH (type);