diff options
Diffstat (limited to 'gdb/alpha-tdep.c')
| -rw-r--r-- | gdb/alpha-tdep.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/gdb/alpha-tdep.c b/gdb/alpha-tdep.c index b2454a492cc..4f892371544 100644 --- a/gdb/alpha-tdep.c +++ b/gdb/alpha-tdep.c @@ -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; } |