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* arm-tdep.h (enum struct_return): New.

Browse Source 
(struct gdbarch_tdep): Add struct_return member.
* arm-tdep.c (arm_return_value): Return
RETURN_VALUE_STRUCT_CONVENTION for aggregates when the ABI uses
pcc_struct_return.
(arm_gdbarch_init): Default to reg_struct_return.
* armobsd-tdep.c (armobsd_init_abi): Set pcc_struct_return.
This commit is contained in:
Mark Kettenis 2006-08-01 18:27:52 +00:00
parent cfde7f7078
commit 7c00367c28
4 changed files with 34 additions and 1 deletions
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10
gdb/ChangeLog
View File

@ -1,3 +1,13 @@
2006-08-01 Mark Kettenis <kettenis@gnu.org>
* arm-tdep.h (enum struct_return): New.
(struct gdbarch_tdep): Add struct_return member.
* arm-tdep.c (arm_return_value): Return
RETURN_VALUE_STRUCT_CONVENTION for aggregates when the ABI uses
pcc_struct_return.
(arm_gdbarch_init): Default to reg_struct_return.
* armobsd-tdep.c (armobsd_init_abi): Set pcc_struct_return.
2006-07-31 Mark Kettenis <kettenis@gnu.org> 2006-07-31 Mark Kettenis <kettenis@gnu.org>
* alpha-tdep.h (ALPHA_S0_REGNUM): New define. * alpha-tdep.h (ALPHA_S0_REGNUM): New define.

9
gdb/arm-tdep.c
View File

@ -2259,11 +2259,14 @@ arm_return_value (struct gdbarch *gdbarch, struct type *valtype,
struct regcache *regcache, gdb_byte *readbuf, struct regcache *regcache, gdb_byte *readbuf,
const gdb_byte *writebuf) const gdb_byte *writebuf)
{ {
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
if (TYPE_CODE (valtype) == TYPE_CODE_STRUCT if (TYPE_CODE (valtype) == TYPE_CODE_STRUCT
|| TYPE_CODE (valtype) == TYPE_CODE_UNION || TYPE_CODE (valtype) == TYPE_CODE_UNION
|| TYPE_CODE (valtype) == TYPE_CODE_ARRAY) || TYPE_CODE (valtype) == TYPE_CODE_ARRAY)
{ {
if (arm_return_in_memory (gdbarch, valtype)) if (tdep->struct_return == pcc_struct_return
|| arm_return_in_memory (gdbarch, valtype))
return RETURN_VALUE_STRUCT_CONVENTION; return RETURN_VALUE_STRUCT_CONVENTION;
} }
@ -2757,6 +2760,10 @@ arm_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
tdep->lowest_pc = 0x20; tdep->lowest_pc = 0x20;
tdep->jb_pc = -1; /* Longjump support not enabled by default. */ tdep->jb_pc = -1; /* Longjump support not enabled by default. */
/* The default, for both APCS and AAPCS, is to return small
structures in registers. */
tdep->struct_return = reg_struct_return;
set_gdbarch_push_dummy_call (gdbarch, arm_push_dummy_call); set_gdbarch_push_dummy_call (gdbarch, arm_push_dummy_call);
set_gdbarch_frame_align (gdbarch, arm_frame_align); set_gdbarch_frame_align (gdbarch, arm_frame_align);

13
gdb/arm-tdep.h
View File

@ -125,6 +125,14 @@ enum arm_abi_kind
ARM_ABI_LAST ARM_ABI_LAST
}; };
/* Convention for returning structures. */
enum struct_return
{
pcc_struct_return, /* Return "short" structures in memory. */
reg_struct_return /* Return "short" structures in registers. */
};
/* Target-dependent structure in gdbarch. */ /* Target-dependent structure in gdbarch. */
struct gdbarch_tdep struct gdbarch_tdep
{ {
@ -147,10 +155,15 @@ struct gdbarch_tdep
will be disabled. */ will be disabled. */
size_t jb_elt_size; /* And the size of each entry in the buf. */ size_t jb_elt_size; /* And the size of each entry in the buf. */
/* Convention for returning structures. */
enum struct_return struct_return;
/* Cached core file helpers. */ /* Cached core file helpers. */
struct regset *gregset, *fpregset; struct regset *gregset, *fpregset;
}; };
#ifndef LOWEST_PC #ifndef LOWEST_PC
#define LOWEST_PC (gdbarch_tdep (current_gdbarch)->lowest_pc) #define LOWEST_PC (gdbarch_tdep (current_gdbarch)->lowest_pc)
#endif #endif

3
gdb/armobsd-tdep.c
View File

@ -88,6 +88,9 @@ armobsd_init_abi (struct gdbarch_info info,
tdep->jb_pc = 24; tdep->jb_pc = 24;
tdep->jb_elt_size = 4; tdep->jb_elt_size = 4;
/* OpenBSD/arm uses -fpcc-struct-return by default. */
tdep->struct_return = pcc_struct_return;
} }
void void