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* config/i386/tm-i386.h (FUNCTION_START_OFFSET, INNER_THAN,

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BREAKPOINT, DECR_PC_AFTER_BREAK): Removed.
* i386-tdep.c (i386_skip_prologue): Adjust function signature to
fit into multi-arch framework.
(i386_breakpoint_from_pc): New function.
(i386_gdbarch_init): Adjust for removal of the macros mentioned
above.
This commit is contained in:
Mark Kettenis 2002-06-15 20:41:51 +00:00
parent 42fdc8df2f
commit 93924b6b99
3 changed files with 36 additions and 28 deletions
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8
gdb/ChangeLog
View File

@ -1,5 +1,13 @@
2002-06-15 Mark Kettenis <kettenis@gnu.org>
* config/i386/tm-i386.h (FUNCTION_START_OFFSET, INNER_THAN,
BREAKPOINT, DECR_PC_AFTER_BREAK): Removed.
* i386-tdep.c (i386_skip_prologue): Adjust function signature to
fit into multi-arch framework.
(i386_breakpoint_from_pc): New function.
(i386_gdbarch_init): Adjust for removal of the macros mentioned
above.
* config/i386/tm-i386.h (FRAMELESS_FUNCTION_INVOCATION,
FRAME_ARGS_ADDRESS, FRAME_LOCALS_ADDRESS, FRAME_NUM_ARGS,
FRAME_ARGS_SKIP, FRAME_INIT_SAVED_REGS): Remove defines.

26
gdb/config/i386/tm-i386.h
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@ -32,32 +32,6 @@ struct frame_saved_regs;
struct value;
struct type;
/* 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(frompc) (i386_skip_prologue (frompc))
extern int i386_skip_prologue (int);
/* Stack grows downward. */
#define INNER_THAN(lhs,rhs) ((lhs) < (rhs))
/* Sequence of bytes for breakpoint instruction. */
#define BREAKPOINT {0xcc}
/* 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 1
/* Return the GDB type object for the "standard" data type of data in
register REGNUM. */

30
gdb/i386-tdep.c
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@ -666,8 +666,8 @@ i386_frame_init_saved_regs (struct frame_info *fip)
/* Return PC of first real instruction. */
int
i386_skip_prologue (int pc)
CORE_ADDR
i386_skip_prologue (CORE_ADDR pc)
{
unsigned char op;
int i;
@ -749,6 +749,24 @@ i386_skip_prologue (int pc)
return (codestream_tell ());
}
/* Use the program counter to determine the contents and size of a
breakpoint instruction. Return a pointer to a string of bytes that
encode a breakpoint instruction, store the length of the string in
*LEN and optionally adjust *PC to point to the correct memory
location for inserting the breakpoint.
On the i386 we have a single breakpoint that fits in a single byte
and can be inserted anywhere. */
static const unsigned char *
i386_breakpoint_from_pc (CORE_ADDR *pc, int *len)
{
static unsigned char break_insn[] = { 0xcc }; /* int 3 */
*len = sizeof (break_insn);
return break_insn;
}
void
i386_push_dummy_frame (void)
{
@ -1402,6 +1420,14 @@ i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
set_gdbarch_use_struct_convention (gdbarch, i386_use_struct_convention);
set_gdbarch_frame_init_saved_regs (gdbarch, i386_frame_init_saved_regs);
set_gdbarch_skip_prologue (gdbarch, i386_skip_prologue);
/* Stack grows downward. */
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
set_gdbarch_breakpoint_from_pc (gdbarch, i386_breakpoint_from_pc);
set_gdbarch_decr_pc_after_break (gdbarch, 1);
set_gdbarch_function_start_offset (gdbarch, 0);
/* The following redefines make backtracing through sigtramp work.
They manufacture a fake sigtramp frame and obtain the saved pc in