diff options
Diffstat (limited to 'gdb/solib-som.c')
| -rw-r--r-- | gdb/solib-som.c | 53 |
1 files changed, 26 insertions, 27 deletions
diff --git a/gdb/solib-som.c b/gdb/solib-som.c index d1522ff..6dc5d14 100644 --- a/gdb/solib-som.c +++ b/gdb/solib-som.c @@ -40,8 +40,8 @@ /* These ought to be defined in some public interface, but aren't. They define the meaning of the various bits in the distinguished __dld_flags variable that is declared in every debuggable a.out on HP-UX, and that - is shared between the debugger and the dynamic linker. - */ + is shared between the debugger and the dynamic linker. */ + #define DLD_FLAGS_MAPPRIVATE 0x1 #define DLD_FLAGS_HOOKVALID 0x2 #define DLD_FLAGS_LISTVALID 0x4 @@ -88,8 +88,8 @@ struct lm_info }; /* These addresses should be filled in by som_solib_create_inferior_hook. - They are also used elsewhere in this module. - */ + They are also used elsewhere in this module. */ + typedef struct { CORE_ADDR address; @@ -97,7 +97,7 @@ typedef struct } addr_and_unwind_t; -/* When adding fields, be sure to clear them in _initialize_som_solib. */ +/* When adding fields, be sure to clear them in _initialize_som_solib. */ static struct { int is_valid; @@ -239,8 +239,8 @@ GDB will be unable to track shl_load/shl_unload calls")); Note that the above is the pre-HP-UX 9.0 behaviour. At 9.0 and above, the dld provides an export stub named "__d_trap" as well as the function named "__d_trap" itself, but doesn't provide "_DLD_HOOK". - We'll look first for the old flavor and then the new. - */ + We'll look first for the old flavor and then the new. */ + msymbol = lookup_minimal_symbol ("_DLD_HOOK", NULL, symfile_objfile); if (msymbol == NULL) msymbol = lookup_minimal_symbol ("__d_trap", NULL, symfile_objfile); @@ -338,7 +338,7 @@ manpage for methods to privately map shared library text.")); if (status != 0) error (_("Unable to write __dld_flags.")); - /* Now find the address of _start and set a breakpoint there. + /* Now find the address of _start and set a breakpoint there. We still need this code for two reasons: * Not all sites have /opt/langtools/lib/end.o, so it's not always @@ -375,8 +375,8 @@ som_solib_desire_dynamic_linker_symbols (void) we've no work to do. (If you add clauses to this test, be sure to likewise update the - test within the loop.) - */ + test within the loop.) */ + if (dld_cache.is_valid) return; @@ -415,8 +415,8 @@ som_solib_desire_dynamic_linker_symbols (void) cover the body of "shl_unload", the second being 4 bytes past the end of the first. This is a large hack to handle that case, but since I don't seem to have any legitimate way to - look for this thing via the symbol table... - */ + look for this thing via the symbol table... */ + if (dld_cache.unload.unwind != NULL) { u = find_unwind_entry (dld_cache.unload.unwind->region_end + 4); @@ -443,7 +443,7 @@ som_solib_desire_dynamic_linker_symbols (void) } } - /* Did we find everything we were looking for? If so, stop. */ + /* Did we find everything we were looking for? If so, stop. */ if ((dld_cache.load.address != 0) && (dld_cache.load_stub.address != 0) && (dld_cache.unload.address != 0) @@ -458,8 +458,7 @@ som_solib_desire_dynamic_linker_symbols (void) dld_cache.hook_stub.unwind = find_unwind_entry (dld_cache.hook_stub.address); /* We're prepared not to find some of these symbols, which is why - this function is a "desire" operation, and not a "require". - */ + this function is a "desire" operation, and not a "require". */ } static int @@ -475,17 +474,17 @@ som_in_dynsym_resolve_code (CORE_ADDR pc) weren't mapped to a (writeable) private region. However, in that case the debugger probably isn't able to set the fundamental breakpoint in the dld callback anyways, so this hack should be - safe. - */ + safe. */ + if ((pc & (CORE_ADDR) 0xc0000000) == (CORE_ADDR) 0xc0000000) return 1; /* Cache the address of some symbols that are part of the dynamic - linker, if not already known. - */ + linker, if not already known. */ + som_solib_desire_dynamic_linker_symbols (); - /* Are we in the dld callback? Or its export stub? */ + /* Are we in the dld callback? Or its export stub? */ u_pc = find_unwind_entry (pc); if (u_pc == NULL) return 0; @@ -493,7 +492,7 @@ som_in_dynsym_resolve_code (CORE_ADDR pc) if ((u_pc == dld_cache.hook.unwind) || (u_pc == dld_cache.hook_stub.unwind)) return 1; - /* Or the interface of the dld (i.e., "shl_load" or friends)? */ + /* Or the interface of the dld (i.e., "shl_load" or friends)? */ if ((u_pc == dld_cache.load.unwind) || (u_pc == dld_cache.unload.unwind) || (u_pc == dld_cache.unload2.unwind) @@ -501,7 +500,7 @@ som_in_dynsym_resolve_code (CORE_ADDR pc) || (u_pc == dld_cache.unload_stub.unwind)) return 1; - /* Apparently this address isn't part of the dld's text. */ + /* Apparently this address isn't part of the dld's text. */ return 0; } @@ -567,7 +566,7 @@ link_map_start (void) return extract_unsigned_integer (buf, 4, byte_order); } -/* Does this so's name match the main binary? */ +/* Does this so's name match the main binary? */ static int match_main (const char *name) { @@ -707,7 +706,7 @@ som_open_symbol_file_object (void *from_ttyp) /* First link map member should be the executable. */ if ((lm = link_map_start ()) == 0) - return 0; /* failed somehow... */ + return 0; /* failed somehow... */ /* Read address of name from target memory to GDB. */ read_memory (lm + offsetof (struct dld_list, name), buf, 4); @@ -773,8 +772,8 @@ som_solib_get_got_by_pc (CORE_ADDR addr) /* Return the address of the handle of the shared library in which ADDR belongs. If ADDR isn't in any known shared library, return zero. */ -/* this function is used in initialize_hp_cxx_exception_support in - hppa-hpux-tdep.c */ +/* This function is used in initialize_hp_cxx_exception_support in + hppa-hpux-tdep.c. */ static CORE_ADDR som_solib_get_solib_by_pc (CORE_ADDR addr) @@ -827,7 +826,7 @@ som_solib_select (struct gdbarch *gdbarch) } /* The rest of these functions are not part of the solib interface; they - are used by somread.c or hppa-hpux-tdep.c */ + are used by somread.c or hppa-hpux-tdep.c. */ int som_solib_section_offsets (struct objfile *objfile, |