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* alpha-tdep.c (alpha_abi_handler): New structure to describe 

an Alpha ABI variant.
(alpha_abi_handler_list): Declare.
(alpha_gdbarch_register_os_abi): New function.
(alpha_gdbarch_init): Give registered ABI variant handlers a
chance to tweak the gdbarch once we have set up defaults.
* alpha-tdep.h: Prototype alpha_gdbarch_register_os_abi.
This commit is contained in:
Jason Thorpe 2002-04-21 18:24:48 +00:00
parent 65585be4ba
commit 44dffaac91
3 changed files with 87 additions and 0 deletions
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10
gdb/ChangeLog
View File

@ -1,3 +1,13 @@
2002-04-21 Jason Thorpe <thorpej@wasabisystems.com>
* alpha-tdep.c (alpha_abi_handler): New structure to describe
an Alpha ABI variant.
(alpha_abi_handler_list): Declare.
(alpha_gdbarch_register_os_abi): New function.
(alpha_gdbarch_init): Give registered ABI variant handlers a
chance to tweak the gdbarch once we have set up defaults.
* alpha-tdep.h: Prototype alpha_gdbarch_register_os_abi.
2002-04-21 Jason Thorpe <thorpej@wasabisystems.com>
* alpha-tdep.c (alpha_gdbarch_init): Set coerce_float_to_double

73
gdb/alpha-tdep.c
View File

@ -1902,6 +1902,44 @@ get_elfosabi (bfd *abfd)
return ALPHA_ABI_UNKNOWN;
}
struct alpha_abi_handler
{
struct alpha_abi_handler *next;
enum alpha_abi abi;
void (*init_abi)(struct gdbarch_info, struct gdbarch *);
};
struct alpha_abi_handler *alpha_abi_handler_list = NULL;
void
alpha_gdbarch_register_os_abi (enum alpha_abi abi,
void (*init_abi)(struct gdbarch_info,
struct gdbarch *))
{
struct alpha_abi_handler **handler_p;
for (handler_p = &alpha_abi_handler_list; *handler_p != NULL;
handler_p = &(*handler_p)->next)
{
if ((*handler_p)->abi == abi)
{
internal_error
(__FILE__, __LINE__,
"alpha_gdbarch_register_os_abi: A handler for this ABI variant "
"(%d) has already been registered", (int) abi);
/* If user wants to continue, override previous definition. */
(*handler_p)->init_abi = init_abi;
return;
}
}
(*handler_p)
= (struct alpha_abi_handler *) xmalloc (sizeof (struct alpha_abi_handler));
(*handler_p)->next = NULL;
(*handler_p)->abi = abi;
(*handler_p)->init_abi = init_abi;
}
/* Initialize the current architecture based on INFO. If possible, re-use an
architecture from ARCHES, which is a list of architectures already created
during this debugging session.
@ -1915,6 +1953,7 @@ alpha_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
struct gdbarch_tdep *tdep;
struct gdbarch *gdbarch;
enum alpha_abi alpha_abi = ALPHA_ABI_UNKNOWN;
struct alpha_abi_handler *abi_handler;
/* Try to determine the ABI of the object we are loading. */
@ -2065,6 +2104,40 @@ alpha_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
set_gdbarch_decr_pc_after_break (gdbarch, 4);
set_gdbarch_frame_args_skip (gdbarch, 0);
/* Hook in ABI-specific overrides, if they have been registered. */
if (alpha_abi == ALPHA_ABI_UNKNOWN)
{
/* Don't complain about not knowing the ABI variant if we don't
have an inferior. */
if (info.abfd)
fprintf_filtered
(gdb_stderr, "GDB doesn't recognize the ABI of the inferior. "
"Attempting to continue with the default Alpha settings");
}
else
{
for (abi_handler = alpha_abi_handler_list; abi_handler != NULL;
abi_handler = abi_handler->next)
if (abi_handler->abi == alpha_abi)
break;
if (abi_handler)
abi_handler->init_abi (info, gdbarch);
else
{
/* We assume that if GDB_MULTI_ARCH is less than
GDB_MULTI_ARCH_TM that an ABI variant can be supported by
overriding definitions in this file. */
if (GDB_MULTI_ARCH > GDB_MULTI_ARCH_PARTIAL)
fprintf_filtered
(gdb_stderr,
"A handler for the ABI variant \"%s\" is not built into this "
"configuration of GDB. "
"Attempting to continue with the default Alpha settings",
alpha_abi_names[alpha_abi]);
}
}
return gdbarch;
}

4
gdb/alpha-tdep.h
View File

@ -98,4 +98,8 @@ struct gdbarch_tdep
CORE_ADDR vm_min_address; /* used by heuristic_proc_start */
};
void alpha_gdbarch_register_os_abi (enum alpha_abi,
void (*init_abi)(struct gdbarch_info,
struct gdbarch *));
#endif /* ALPHA_TDEP_H */