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* vax-tdep.c (vax_frame_saved_pc): New function.

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(vax_frame_args_address_correct): Ditto.
(vax_frame_args_address): Ditto.
(vax_frame_locals_address): Ditto.
(vax_frame_num_args): Move code to be in proximity to
other frame-related functions.
* config/vax/tm-vax.h (INNER_THAN): Use core_addr_lessthan.
(FRAME_SAVED_PC): Use vax_frame_saved_pc.
(FRAME_ARGS_ADDRESS_CORRECT): Use vax_frame_args_address_correct.
(FRAME_ARGS_ADDRESS): Use vax_frame_args_address.
(FRAME_LOCALS_ADDRESS): Use vax_frame_locals_address.
This commit is contained in:
Jason Thorpe 2002-04-22 20:38:41 +00:00
parent 36af0b355e
commit 5516aa921e
3 changed files with 76 additions and 37 deletions
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14
gdb/ChangeLog
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@ -1,3 +1,17 @@
2002-04-22 Jason Thorpe <thorpej@wasabisystems.com>
* vax-tdep.c (vax_frame_saved_pc): New function.
(vax_frame_args_address_correct): Ditto.
(vax_frame_args_address): Ditto.
(vax_frame_locals_address): Ditto.
(vax_frame_num_args): Move code to be in proximity to
other frame-related functions.
* config/vax/tm-vax.h (INNER_THAN): Use core_addr_lessthan.
(FRAME_SAVED_PC): Use vax_frame_saved_pc.
(FRAME_ARGS_ADDRESS_CORRECT): Use vax_frame_args_address_correct.
(FRAME_ARGS_ADDRESS): Use vax_frame_args_address.
(FRAME_LOCALS_ADDRESS): Use vax_frame_locals_address.
2002-04-22 H.J. Lu (hjl@gnu.org)
* Makefile.in (FLAGS_TO_PASS): Add libdir, mandir, datadir and

38
gdb/config/vax/tm-vax.h
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@ -51,7 +51,7 @@ extern CORE_ADDR vax_skip_prologue (CORE_ADDR);
/* Stack grows downward. */
#define INNER_THAN(lhs,rhs) ((lhs) < (rhs))
#define INNER_THAN(lhs,rhs) core_addr_lessthan ((lhs), (rhs))
/* Sequence of bytes for breakpoint instruction. */
@ -173,37 +173,21 @@ extern struct type *vax_register_virtual_type (int);
/* Saved Pc. Get it from sigcontext if within sigtramp. */
/* Offset to saved PC in sigcontext, from <sys/signal.h>. */
/* XXXJRT should go away */
#define SIGCONTEXT_PC_OFFSET 12
#define FRAME_SAVED_PC(FRAME) \
(((FRAME)->signal_handler_caller \
? sigtramp_saved_pc (FRAME) \
: read_memory_integer ((FRAME)->frame + 16, 4)) \
)
#define FRAME_SAVED_PC(FRAME) vax_frame_saved_pc ((FRAME))
extern CORE_ADDR vax_frame_saved_pc (struct frame_info *);
/* Cannot find the AP register value directly from the FP value. Must
find it saved in the frame called by this one, or in the AP
register for the innermost frame. However, there is no way to tell
the difference between the innermost frame and a frame for which we
just don't know the frame that it called (e.g. "info frame
0x7ffec789"). For the sake of argument suppose that the stack is
somewhat trashed (which is one reason that "info frame" exists).
So return 0 (indicating we don't know the address of
the arglist) if we don't know what frame this frame calls. */
#define FRAME_ARGS_ADDRESS_CORRECT(fi) \
(((fi)->next \
? read_memory_integer ((fi)->next->frame + 8, 4) \
: /* read_register (AP_REGNUM) */ 0))
/* XXXJRT not yet under gdbarch control */
#define FRAME_ARGS_ADDRESS_CORRECT(fi) vax_frame_args_address ((fi))
extern CORE_ADDR vax_frame_args_address (struct frame_info *);
/* In most of GDB, getting the args address is too important to
just say "I don't know". This is sometimes wrong for functions
that aren't on top of the stack, but c'est la vie. */
#define FRAME_ARGS_ADDRESS(fi) \
(((fi)->next \
? read_memory_integer ((fi)->next->frame + 8, 4) \
: read_register (AP_REGNUM) /* 0 */))
#define FRAME_ARGS_ADDRESS(fi) vax_frame_args_address ((fi))
extern CORE_ADDR vax_frame_args_address (struct frame_info *);
#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
#define FRAME_LOCALS_ADDRESS(fi) vax_frame_locals_address ((fi))
extern CORE_ADDR vax_frame_locals_address (struct frame_info *);
/* Return number of args passed to a frame.
Can return -1, meaning no way to tell. */

61
gdb/vax-tdep.c
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@ -126,6 +126,57 @@ vax_frame_init_saved_regs (struct frame_info *frame)
frame->saved_regs[AP_REGNUM] = frame->frame + 8;
frame->saved_regs[PS_REGNUM] = frame->frame + 4;
}
CORE_ADDR
vax_frame_saved_pc (struct frame_info *frame)
{
if (frame->signal_handler_caller)
return (sigtramp_saved_pc (frame)); /* XXXJRT */
return (read_memory_integer (frame->frame + 16, 4));
}
CORE_ADDR
vax_frame_args_address_correct (struct frame_info *frame)
{
/* Cannot find the AP register value directly from the FP value. Must
find it saved in the frame called by this one, or in the AP register
for the innermost frame. However, there is no way to tell the
difference between the innermost frame and a frame for which we
just don't know the frame that it called (e.g. "info frame 0x7ffec789").
For the sake of argument, suppose that the stack is somewhat trashed
(which is one reason that "info frame" exists). So, return 0 (indicating
we don't know the address of the arglist) if we don't know what frame
this frame calls. */
if (frame->next)
return (read_memory_integer (frame->next->frame + 8, 4));
return (0);
}
CORE_ADDR
vax_frame_args_address (struct frame_info *frame)
{
/* In most of GDB, getting the args address is too important to
just say "I don't know". This is sometimes wrong for functions
that aren't on top of the stack, but c'est la vie. */
if (frame->next)
return (read_memory_integer (frame->next->frame + 8, 4));
return (read_register (AP_REGNUM));
}
CORE_ADDR
vax_frame_locals_address (struct frame_info *frame)
{
return (frame->frame);
}
int
vax_frame_num_args (struct frame_info *fi)
{
return (0xff & read_memory_integer (FRAME_ARGS_ADDRESS (fi), 1));
}
/* Advance PC across any function entry prologue instructions
to reach some "real" code. */
@ -156,16 +207,6 @@ vax_skip_prologue (CORE_ADDR pc)
return pc;
}
/* Return number of args passed to a frame.
Can return -1, meaning no way to tell. */
int
vax_frame_num_args (struct frame_info *fi)
{
return (0xff & read_memory_integer (FRAME_ARGS_ADDRESS (fi), 1));
}
/* Print the vax instruction at address MEMADDR in debugged memory,
from disassembler info INFO.