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authorAlan Modra <amodra@gmail.com>2008-04-08 03:26:54 +0000
committerAlan Modra <amodra@gmail.com>2008-04-08 03:26:54 +0000
commit9dcc47943c9cade9fa2d4ce118a9f25ac4dd5f98 (patch)
tree70e174f06438682669d3f88a7575c98a6a1b46ac /ld/emultempl
parent04f72d577278b28269be17bade91571d7a165176 (diff)
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* elf32-spu.c: Include libiberty.h. (struct spu_link_hash_table): Add local_stire, overlay_fixed, reserved, non_ovly_stub, spu_elf_load_ovl_mgr, spu_elf_open_overlay_script, spu_elf_relink, auto_overlay fields. (AUTO_OVERLAY, AUTO_RELINK, OVERLAY_RODATA): Define. (needs_ovl_stub): Flip test so that call to non-function warning is emitted during relocate_section rather than earlier. (spu_elf_check_vma): Stash --auto-overlay parameters, and clear auto_overlay if no section exceeds local store. (struct call_info): Add count, max_depth, is_pasted fields. (struct function_info): Add rodata, last_caller, call_count, depth, new visit flags. (insert_callee): Increment call count. (copy_callee): New function. (mark_functions_via_relocs): Investigate all reloc types to count possible function pointer stubs for --auto-overlay. Track last_caller and increment function call_count. (pasted_function): Insert a "call" into call info for pasted section. (remove_cycles): Track max depth of calls. Don't emit call graph pruning warning for --auto-overlay. (build_call_tree): Don't transfer_calls for --auto-overlay. Adjust remove_cycles call. (sort_calls, sort_lib, sort_bfds): New functions. (struct _mos_param, struct _uos_param, struct _cl_param): New. (mark_overlay_section, unmark_overlay_section): New functions. (collect_lib_sectios, auto_ovl_lib_functions): New functions. (collect_overlays, find_pasted_call): New functions. (sum_stack): Deal with is_pasted "calls". Exit before printing when --auto-overlay. (spu_elf_auto_overlay): New function. (spu_elf_final_link): Call spu_elf_auto_overlay. * elf32-spu.h (spu_elf_check_vma): Update prototype. ld/ * emultempl/spuelf.em (auto_overlay, auto_overlay_file, auto_overlay_fixed, auto_overlay_reserved, my_argc, my_argv): New vars. (spu_before_allocation): Warn on --auto-overlay and existing overlays. (struct tflist, clean_tmp): Move. (new_tmp_file): New function, extracted from.. (embedded_spu_file): ..here. (spu_elf_open_overlay_script, spu_elf_relink): New function. (gld${EMULATION_NAME}_finish): Pass a bunch of --auto-overlay params. Warn on --auto-overlay and zero local store. (gld${EMULATION_NAME}_choose_target): New function to stash argv. (OPTION_SPU_AUTO_OVERLAY, OPTION_SPU_AUTO_RELINK, OPTION_SPU_OVERLAY_RODATA, OPTION_SPU_FIXED_SPACE, OPTION_SPU_RESERVED_SPACE, OPTION_SPU_NO_AUTO_OVERLAY): Define. (PARSE_AND_LIST_LONGOPTS): Add entries for new options. (PARSE_AND_LIST_OPTIONS): Likewise. (PARSE_AND_LIST_ARGS_CASES): Likewise. (LDEMUL_CHOOSE_TARGET): Define.
Diffstat (limited to 'ld/emultempl')
-rw-r--r--ld/emultempl/spuelf.em217
1 files changed, 184 insertions, 33 deletions
diff --git a/ld/emultempl/spuelf.em b/ld/emultempl/spuelf.em
index 3a8cf28..ebaecdb 100644
--- a/ld/emultempl/spuelf.em
+++ b/ld/emultempl/spuelf.em
@@ -45,6 +45,14 @@ static int emit_stack_syms = 0;
static bfd_vma local_store_lo = 0;
static bfd_vma local_store_hi = 0x3ffff;
+/* Control --auto-overlay feature. */
+static int auto_overlay = 0;
+static char *auto_overlay_file = 0;
+static unsigned int auto_overlay_fixed = 0;
+static unsigned int auto_overlay_reserved = 0;
+int my_argc;
+char **my_argv;
+
static const char ovl_mgr[] = {
EOF
@@ -202,6 +210,12 @@ spu_before_allocation (void)
{
int ret;
+ if (auto_overlay != 0)
+ {
+ einfo ("%P: --auto-overlay ignored with user overlay script\n");
+ auto_overlay = 0;
+ }
+
ret = spu_elf_size_stubs (&link_info,
spu_place_special_section,
non_overlay_stubs);
@@ -218,6 +232,83 @@ spu_before_allocation (void)
gld${EMULATION_NAME}_before_allocation ();
}
+struct tflist {
+ struct tflist *next;
+ char name[9];
+};
+
+static struct tflist *tmp_file_list;
+
+static void clean_tmp (void)
+{
+ for (; tmp_file_list != NULL; tmp_file_list = tmp_file_list->next)
+ unlink (tmp_file_list->name);
+}
+
+static int
+new_tmp_file (char **fname)
+{
+ struct tflist *tf;
+ int fd;
+
+ if (tmp_file_list == NULL)
+ atexit (clean_tmp);
+ tf = xmalloc (sizeof (*tf));
+ tf->next = tmp_file_list;
+ tmp_file_list = tf;
+ memcpy (tf->name, "ldXXXXXX", sizeof (tf->name));
+ *fname = tf->name;
+#ifdef HAVE_MKSTEMP
+ fd = mkstemp (*fname);
+#else
+ *fname = mktemp (*fname);
+ if (*fname == NULL)
+ return -1;
+ fd = open (fname, O_RDWR | O_CREAT | O_EXCL, 0600);
+#endif
+ return fd;
+}
+
+static FILE *
+spu_elf_open_overlay_script (void)
+{
+ FILE *script = NULL;
+
+ if (auto_overlay_file == NULL)
+ {
+ int fd = new_tmp_file (&auto_overlay_file);
+ if (fd == -1)
+ goto file_err;
+ script = fdopen (fd, "w");
+ }
+ else
+ script = fopen (auto_overlay_file, "w");
+
+ if (script == NULL)
+ {
+ file_err:
+ einfo ("%F%P: can not open script: %E\n");
+ }
+ return script;
+}
+
+static void
+spu_elf_relink (void)
+{
+ char **argv = xmalloc ((my_argc + 5) * sizeof (*argv));
+
+ memcpy (argv, my_argv, my_argc * sizeof (*argv));
+ argv[my_argc++] = "--no-auto-overlay";
+ if (tmp_file_list->name == auto_overlay_file)
+ argv[my_argc++] = auto_overlay_file;
+ argv[my_argc++] = "-T";
+ argv[my_argc++] = auto_overlay_file;
+ argv[my_argc] = 0;
+ execvp (argv[0], (char *const *) argv);
+ perror (argv[0]);
+ _exit (127);
+}
+
/* Final emulation specific call. */
static void
@@ -235,10 +326,17 @@ gld${EMULATION_NAME}_finish (void)
{
asection *s;
- s = spu_elf_check_vma (&link_info, local_store_lo, local_store_hi);
- if (s != NULL)
+ s = spu_elf_check_vma (&link_info, auto_overlay,
+ local_store_lo, local_store_hi,
+ auto_overlay_fixed, auto_overlay_reserved,
+ spu_elf_load_ovl_mgr,
+ spu_elf_open_overlay_script,
+ spu_elf_relink);
+ if (s != NULL && !auto_overlay)
einfo ("%X%P: %A exceeds local store range\n", s);
}
+ else if (auto_overlay)
+ einfo ("%P: --auto-overlay ignored with zero local store range\n");
if (!spu_elf_build_stubs (&link_info,
emit_stub_syms || link_info.emitrelocations))
@@ -248,6 +346,14 @@ gld${EMULATION_NAME}_finish (void)
finish_default ();
}
+static char *
+gld${EMULATION_NAME}_choose_target (int argc, char *argv[])
+{
+ my_argc = argc;
+ my_argv = argv;
+ return ldemul_default_target (argc, argv);
+}
+
EOF
if grep -q 'ld_elf.*ppc.*_emulation' ldemul-list.h; then
@@ -256,19 +362,6 @@ if grep -q 'ld_elf.*ppc.*_emulation' ldemul-list.h; then
#include <fcntl.h>
#include <sys/wait.h>
-struct tflist {
- struct tflist *next;
- char name[9];
-};
-
-static struct tflist *tmp_file_list;
-
-static void clean_tmp (void)
-{
- for (; tmp_file_list != NULL; tmp_file_list = tmp_file_list->next)
- unlink (tmp_file_list->name);
-}
-
static const char *
base_name (const char *path)
{
@@ -302,7 +395,6 @@ embedded_spu_file (lang_input_statement_type *entry, const char *flags)
const char *cmd[6];
const char *sym;
char *handle, *p;
- struct tflist *tf;
char *oname;
int fd;
pid_t pid;
@@ -326,22 +418,7 @@ embedded_spu_file (lang_input_statement_type *entry, const char *flags)
if (!(ISALNUM (*p) || *p == '$' || *p == '.'))
*p = '_';
- if (tmp_file_list == NULL)
- atexit (clean_tmp);
- tf = xmalloc (sizeof (*tf));
- tf->next = tmp_file_list;
- tmp_file_list = tf;
- oname = tf->name;
- memcpy (tf->name, "ldXXXXXX", sizeof (tf->name));
-
-#ifdef HAVE_MKSTEMP
- fd = mkstemp (oname);
-#else
- oname = mktemp (oname);
- if (oname == NULL)
- return FALSE;
- fd = open (oname, O_RDWR | O_CREAT | O_EXCL, 0600);
-#endif
+ fd = new_tmp_file (&oname);
if (fd == -1)
return FALSE;
close (fd);
@@ -440,6 +517,12 @@ PARSE_AND_LIST_PROLOGUE='
#define OPTION_SPU_LOCAL_STORE (OPTION_SPU_NON_OVERLAY_STUBS + 1)
#define OPTION_SPU_STACK_ANALYSIS (OPTION_SPU_LOCAL_STORE + 1)
#define OPTION_SPU_STACK_SYMS (OPTION_SPU_STACK_ANALYSIS + 1)
+#define OPTION_SPU_AUTO_OVERLAY (OPTION_SPU_STACK_SYMS + 1)
+#define OPTION_SPU_AUTO_RELINK (OPTION_SPU_AUTO_OVERLAY + 1)
+#define OPTION_SPU_OVERLAY_RODATA (OPTION_SPU_AUTO_RELINK + 1)
+#define OPTION_SPU_FIXED_SPACE (OPTION_SPU_OVERLAY_RODATA + 1)
+#define OPTION_SPU_RESERVED_SPACE (OPTION_SPU_FIXED_SPACE + 1)
+#define OPTION_SPU_NO_AUTO_OVERLAY (OPTION_SPU_RESERVED_SPACE + 1)
'
PARSE_AND_LIST_LONGOPTS='
@@ -450,6 +533,12 @@ PARSE_AND_LIST_LONGOPTS='
{ "local-store", required_argument, NULL, OPTION_SPU_LOCAL_STORE },
{ "stack-analysis", no_argument, NULL, OPTION_SPU_STACK_ANALYSIS },
{ "emit-stack-syms", no_argument, NULL, OPTION_SPU_STACK_SYMS },
+ { "auto-overlay", optional_argument, NULL, OPTION_SPU_AUTO_OVERLAY },
+ { "auto-relink", no_argument, NULL, OPTION_SPU_AUTO_RELINK },
+ { "overlay-rodata", no_argument, NULL, OPTION_SPU_OVERLAY_RODATA },
+ { "fixed-space", required_argument, NULL, OPTION_SPU_FIXED_SPACE },
+ { "reserved-space", required_argument, NULL, OPTION_SPU_RESERVED_SPACE },
+ { "no-auto-overlay", optional_argument, NULL, OPTION_SPU_NO_AUTO_OVERLAY },
'
PARSE_AND_LIST_OPTIONS='
@@ -460,7 +549,14 @@ PARSE_AND_LIST_OPTIONS='
--extra-overlay-stubs Add stubs on all calls out of overlay regions.\n\
--local-store=lo:hi Valid address range.\n\
--stack-analysis Estimate maximum stack requirement.\n\
- --emit-stack-syms Add sym giving stack needed for each func.\n"
+ --emit-stack-syms Add sym giving stack needed for each func.\n\
+ --auto-overlay [=filename] Create an overlay script in filename if\n\
+ executable does not fit in local store.\n\
+ --auto-relink Rerun linker using auto-overlay script.\n\
+ --overlay-rodata Place read-only data with associated function\n\
+ code in overlays.\n\
+ --fixed-space=bytes Local store for non-overlay code and data.\n\
+ --reserved-space=bytes Local store for stack and heap.\n"
));
'
@@ -502,8 +598,63 @@ PARSE_AND_LIST_ARGS_CASES='
case OPTION_SPU_STACK_SYMS:
emit_stack_syms = 1;
break;
+
+ case OPTION_SPU_AUTO_OVERLAY:
+ auto_overlay |= 1;
+ if (optarg != NULL)
+ {
+ auto_overlay_file = optarg;
+ break;
+ }
+ /* Fall thru */
+
+ case OPTION_SPU_AUTO_RELINK:
+ auto_overlay |= 2;
+ break;
+
+ case OPTION_SPU_OVERLAY_RODATA:
+ auto_overlay |= 4;
+ break;
+
+ case OPTION_SPU_FIXED_SPACE:
+ {
+ char *end;
+ auto_overlay_fixed = strtoul (optarg, &end, 0);
+ if (*end != 0)
+ einfo (_("%P%F: invalid --fixed-space value `%s'\''\n"), optarg);
+ }
+ break;
+
+ case OPTION_SPU_RESERVED_SPACE:
+ {
+ char *end;
+ auto_overlay_reserved = strtoul (optarg, &end, 0);
+ if (*end != 0)
+ einfo (_("%P%F: invalid --reserved-space value `%s'\''\n"), optarg);
+ }
+ break;
+
+ case OPTION_SPU_NO_AUTO_OVERLAY:
+ auto_overlay = 0;
+ if (optarg != NULL)
+ {
+ struct tflist *tf;
+ size_t len;
+
+ if (tmp_file_list == NULL)
+ atexit (clean_tmp);
+
+ len = strlen (optarg) + 1;
+ tf = xmalloc (sizeof (*tf) - sizeof (tf->name) + len);
+ memcpy (tf->name, optarg, len);
+ tf->next = tmp_file_list;
+ tmp_file_list = tf;
+ break;
+ }
+ break;
'
LDEMUL_AFTER_OPEN=spu_after_open
LDEMUL_BEFORE_ALLOCATION=spu_before_allocation
LDEMUL_FINISH=gld${EMULATION_NAME}_finish
+LDEMUL_CHOOSE_TARGET=gld${EMULATION_NAME}_choose_target