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authorIan Lance Taylor <ian@airs.com>1994-05-19 18:25:10 +0000
committerIan Lance Taylor <ian@airs.com>1994-05-19 18:25:10 +0000
commit2a9fa50cd8ae5dc1e99056c9683bece549e0b68f (patch)
treed4a3dce560b126bc852e1b8cd1dabaa266b7ba2d /ld/ld.h
parent013dec1ad95ef067951314b9f1beb2fa53296a6f (diff)
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Add support for ELF shared libraries.
* ld.h (ld_config_type): Add field dynamic_link. * ldmain.c (main): Initialize config.dynamic_link to false. Warn on attempts to use -r with -relax, -call_shared or -s. * lexsup.c (longopts): Separate OPTION_CALL_SHARED from OPTION_NON_SHARED. Add OPTION_IGNORE. Adjust macro values accordingly. Add "dy" and "non_shared" options. Change "Qy" to OPTION_IGNORE for now. Handle OPTION_CALL_SHARED and OPTION_NON_SHARED by setting dynamic_link field accordingly. Handle OPTION_IGNORE by ignoring it. Clear dynamic_link field for -r and -Ur. * ldfile.c (ldfile_open_file): If config.dynamic_link is true, try opening a file with a .so extension first. * emultempl/elf32.em: New file. * emulparams/elf32_sparc.sh (TEXT_START_ADDR): Change to 0x10000. (NONPAGED_TEXT_START_ADDR): Likewise. (TEMPLATE_NAME): Define as elf32. (DATA_PLT): Define. * emulparams/elf_i386.sh (TEMPLATE_NAME): Define as elf32. * scripttempl/elf.sc: Add placement for new dynamic sections. Don't use CREATE_OBJECT_SYMBOLS. Define _etext, _edata and _end outside of any section. Don't use ALIGN(8); just let one section VMA follow another. Put .dynbss in .bss. Don't mention debugging sections; they'll be handled correctly anyhow. * Makefile.in (eelf_i386.c): Depend upon elf32.em, not generic.em.
Diffstat (limited to 'ld/ld.h')
-rw-r--r--ld/ld.h85
1 files changed, 28 insertions, 57 deletions
diff --git a/ld/ld.h b/ld/ld.h
index 5aa8036..2ab94f6 100644
--- a/ld/ld.h
+++ b/ld/ld.h
@@ -18,66 +18,41 @@
along with GLD; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+#ifndef LD_H
+#define LD_H
-#define flag_is_not_at_end(x) ((x) & BSF_NOT_AT_END)
-#define flag_is_ordinary_local(x) (((x) & (BSF_LOCAL))&!((x) & (BSF_DEBUGGING)))
-#define flag_is_debugger(x) ((x) & BSF_DEBUGGING)
-#define flag_is_undefined_or_global(x) ((x) & (BSF_UNDEFINED | BSF_GLOBAL))
-#define flag_is_defined(x) (!((x) & (BSF_UNDEFINED)))
-#define flag_is_global_or_common(x) ((x) & (BSF_GLOBAL | BSF_FORT_COMM))
-#define flag_is_undefined_or_global_or_common(x) ((x) & (BSF_UNDEFINED | BSF_GLOBAL | BSF_FORT_COMM))
-#define flag_is_undefined_or_global_or_common_or_constructor(x) ((x) & (BSF_UNDEFINED | BSF_GLOBAL | BSF_FORT_COMM | BSF_CONSTRUCTOR))
-#define flag_is_constructor(x) ((x) & BSF_CONSTRUCTOR)
-#define flag_is_common(x) ((x) & BSF_FORT_COMM)
-#define flag_is_global(x) ((x) & (BSF_GLOBAL))
-#define flag_is_weak(x) ((x) & BSF_WEAK)
-#define flag_is_undefined(x) ((x) & BSF_UNDEFINED)
-#define flag_set(x,y) (x = y)
-#define flag_is_fort_comm(x) ((x) & BSF_FORT_COMM)
-#define flag_is_absolute(x) ((x) & BSF_ABSOLUTE)
/* Extra information we hold on sections */
-typedef struct user_section_struct {
+typedef struct user_section_struct
+{
/* Pointer to the section where this data will go */
struct lang_input_statement_struct *file;
} section_userdata_type;
#define get_userdata(x) ((x)->userdata)
-#define as_output_section_statement(x) ((x)->otheruserdata)
-
-
-
-/* Which symbols should be stripped (omitted from the output):
- none, all, or debugger symbols. */
-typedef enum { STRIP_NONE, STRIP_ALL, STRIP_DEBUGGER, STRIP_SOME } strip_symbols_type;
-
-
-
-
-/* Which local symbols should be omitted:
- none, all, or those starting with L.
- This is irrelevant if STRIP_NONE. */
-typedef enum { DISCARD_NONE, DISCARD_ALL, DISCARD_L } discard_locals_type;
-
#define BYTE_SIZE (1)
#define SHORT_SIZE (2)
#define LONG_SIZE (4)
+#define QUAD_SIZE (8)
/* ALIGN macro changed to ALIGN_N to avoid */
/* conflict in /usr/include/machine/machparam.h */
-/* WARNING: If THIS is a 64 bit address and BOUNDARY is an unsigned int,
+/* WARNING: If THIS is a 64 bit address and BOUNDARY is a 32 bit int,
you must coerce boundary to the same type as THIS.
??? Is there a portable way to avoid this. */
-#define ALIGN_N(this, boundary) ((( (this) + ((boundary) -1)) & (~((boundary)-1))))
+#define ALIGN_N(this, boundary) \
+ ((( (this) + ((boundary) -1)) & (~((boundary)-1))))
-typedef struct {
+typedef struct
+{
/* 1 => assign space to common symbols even if `relocatable_output'. */
boolean force_common_definition;
boolean relax;
-
} args_type;
+extern args_type command_line;
+
typedef int token_code_type;
typedef struct
@@ -85,41 +60,37 @@ typedef struct
bfd_size_type specified_data_size;
boolean magic_demand_paged;
boolean make_executable;
- /* 1 => write relocation into output file so can re-input it later. */
- boolean relocateable_output;
- /* Will we build contstructors, or leave alone ? */
+ /* If true, doing a dynamic link. */
+ boolean dynamic_link;
+
boolean build_constructors;
/* If true, warn about merging common symbols with others. */
boolean warn_common;
boolean sort_common;
-/* these flags may seem mutually exclusive, but not setting them
- allows the back end to decide what would be the best thing to do */
+
boolean text_read_only;
- char *map_filename;
- FILE *map_file;
+ char *map_filename;
+ FILE *map_file;
+ boolean stats;
} ld_config_type;
-#define set_asymbol_chain(x,y) ((x)->udata = (PTR)y)
-#define get_asymbol_chain(x) ((asymbol **)((x)->udata))
-#define get_loader_symbol(x) ((loader_global_asymbol *)((x)->udata))
-#define set_loader_symbol(x,y) ((x)->udata = (PTR)y)
-
-
+extern ld_config_type config;
-
-
-typedef enum {
+typedef enum
+{
lang_first_phase_enum,
lang_allocating_phase_enum,
- lang_final_phase_enum } lang_phase_type;
-
-
+ lang_final_phase_enum
+} lang_phase_type;
+extern boolean had_script;
+extern boolean force_make_executable;
+extern int yyparse PARAMS ((void));
-int yyparse();
+#endif