Toolchain/binutils-gdb
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2004-06-06 Randolph Chung <tausq@debian.org>

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* hppa-tdep.h (struct value): Forward declaration.
	(gdbarch_tdep): Define tdep find_global_pointer method.
	* hppa-tdep.c (hppa32_push_dummy_call): Find the global pointer
	associated with the function we are trying to call, and write it
	to the gp register.
	(hppa32_convert_from_funct_ptr_addr): New function.
	(hppa_find_global_pointer): New function.
	(hppa_gdbarch_init): Set default find_global_pointer method; set
	convert_from_func_ptr_addr method.
	* hppa-linux-tdep.c (hppa_linux_find_global_pointer): New function.
	(hppa_linux_init_abi): Set find_global_pointer method.
	* Makefile.in (hppa-linux-tdep.o): Add value.h dependency.
This commit is contained in:
Randolph Chung
2004-06-07 02:08:07 +00:00
parent 7d9b040b53
commit d49771efb5
5 changed files with 149 additions and 1 deletions
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37
gdb/hppa-tdep.c
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@@ -727,6 +727,12 @@ hppa32_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
/* Two passes. First pass computes the location of everything,
second pass writes the bytes out. */
int write_pass;
/* Global pointer (r19) of the function we are trying to call. */
CORE_ADDR gp;
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
for (write_pass = 0; write_pass < 2; write_pass++)
{
CORE_ADDR struct_ptr = 0;
@@ -847,6 +853,11 @@ hppa32_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
if (struct_return)
write_register (28, struct_addr);
gp = tdep->find_global_pointer (function);
if (gp != 0)
write_register (19, gp);
/* Set the return address. */
regcache_cooked_write_unsigned (regcache, HPPA_RP_REGNUM, bp_addr);
@@ -979,6 +990,22 @@ hppa64_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
return param_end + 64;
}
static CORE_ADDR
hppa32_convert_from_func_ptr_addr (struct gdbarch *gdbarch,
CORE_ADDR addr,
struct target_ops *targ)
{
if (addr & 2)
{
CORE_ADDR plabel;
plabel = addr & ~3;
target_read_memory(plabel, (char *)&addr, 4);
}
return addr;
}
static CORE_ADDR
hppa32_frame_align (struct gdbarch *gdbarch, CORE_ADDR addr)
{
@@ -2309,6 +2336,12 @@ hppa_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
store_unsigned_integer (buf, sizeof(tmp), tmp);
}
static CORE_ADDR
hppa_find_global_pointer (struct value *function)
{
return 0;
}
void
hppa_frame_prev_register_helper (struct frame_info *next_frame,
struct trad_frame_saved_reg saved_regs[],
@@ -2410,6 +2443,8 @@ hppa_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
else
tdep->bytes_per_address = 4;
tdep->find_global_pointer = hppa_find_global_pointer;
/* Some parts of the gdbarch vector depend on whether we are running
on a 32 bits or 64 bits target. */
switch (tdep->bytes_per_address)
@@ -2469,6 +2504,8 @@ hppa_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
case 4:
set_gdbarch_push_dummy_call (gdbarch, hppa32_push_dummy_call);
set_gdbarch_frame_align (gdbarch, hppa32_frame_align);
set_gdbarch_convert_from_func_ptr_addr
(gdbarch, hppa32_convert_from_func_ptr_addr);
break;
case 8:
set_gdbarch_push_dummy_call (gdbarch, hppa64_push_dummy_call);