* Rearrange struct bfd_section a little
@ 2022-04-09 6:05 Alan Modra
0 siblings, 0 replies; only message in thread
From: Alan Modra @ 2022-04-09 6:05 UTC (permalink / raw)
To: binutils
For better packing on 64-bit hosts.
* section.c (struct bfd_section): Move next and prev field earlier.
Move alignment_power later.
(BFD_FAKE_SECTION): Adjust to suit.
* bfd-in2.h: Regenerate.
diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h
index eb3b79e0bfe..50e26fc691d 100644
--- a/bfd/bfd-in2.h
+++ b/bfd/bfd-in2.h
@@ -766,6 +766,12 @@ typedef struct bfd_section
the same as that passed to bfd_make_section. */
const char *name;
+ /* The next section in the list belonging to the BFD, or NULL. */
+ struct bfd_section *next;
+
+ /* The previous section in the list belonging to the BFD, or NULL. */
+ struct bfd_section *prev;
+
/* A unique sequence number. */
unsigned int id;
@@ -776,12 +782,6 @@ typedef struct bfd_section
/* Which section in the bfd; 0..n-1 as sections are created in a bfd. */
unsigned int index;
- /* The next section in the list belonging to the BFD, or NULL. */
- struct bfd_section *next;
-
- /* The previous section in the list belonging to the BFD, or NULL. */
- struct bfd_section *prev;
-
/* The field flags contains attributes of the section. Some
flags are read in from the object file, and some are
synthesized from other information. */
@@ -1082,10 +1082,6 @@ typedef struct bfd_section
/* The output section through which to map on output. */
struct bfd_section *output_section;
- /* The alignment requirement of the section, as an exponent of 2 -
- e.g., 3 aligns to 2^3 (or 8). */
- unsigned int alignment_power;
-
/* If an input section, a pointer to a vector of relocation
records for the data in this section. */
struct reloc_cache_entry *relocation;
@@ -1097,6 +1093,10 @@ typedef struct bfd_section
/* The number of relocation records in one of the above. */
unsigned reloc_count;
+ /* The alignment requirement of the section, as an exponent of 2 -
+ e.g., 3 aligns to 2^3 (or 8). */
+ unsigned int alignment_power;
+
/* Information below is back end specific - and not always used
or updated. */
@@ -1306,8 +1306,8 @@ discarded_section (const asection *sec)
}
#define BFD_FAKE_SECTION(SEC, SYM, NAME, IDX, FLAGS) \
- /* name, id, section_id, index, next, prev, flags, user_set_vma, */ \
- { NAME, IDX, 0, 0, NULL, NULL, FLAGS, 0, \
+ /* name, next, prev, id, section_id, index, flags, user_set_vma, */ \
+ { NAME, NULL, NULL, IDX, 0, 0, FLAGS, 0, \
\
/* linker_mark, linker_has_input, gc_mark, decompress_status, */ \
0, 0, 1, 0, \
@@ -1318,14 +1318,14 @@ discarded_section (const asection *sec)
/* sec_flg0, sec_flg1, sec_flg2, sec_flg3, sec_flg4, sec_flg5, */ \
0, 0, 0, 0, 0, 0, \
\
- /* vma, lma, size, rawsize, compressed_size, */ \
+ /* vma, lma, size, rawsize, compressed_size, */ \
0, 0, 0, 0, 0, \
\
- /* output_offset, output_section, alignment_power, */ \
- 0, &SEC, 0, \
+ /* output_offset, output_section, relocation, orelocation, */ \
+ 0, &SEC, NULL, NULL, \
\
- /* relocation, orelocation, reloc_count, filepos, rel_filepos, */ \
- NULL, NULL, 0, 0, 0, \
+ /* reloc_count, alignment_power, filepos, rel_filepos, */ \
+ 0, 0, 0, 0, \
\
/* line_filepos, userdata, contents, lineno, lineno_count, */ \
0, NULL, NULL, NULL, 0, \
diff --git a/bfd/section.c b/bfd/section.c
index d7922e0741a..5a487ce6c6f 100644
--- a/bfd/section.c
+++ b/bfd/section.c
@@ -151,6 +151,12 @@ CODE_FRAGMENT
. the same as that passed to bfd_make_section. *}
. const char *name;
.
+. {* The next section in the list belonging to the BFD, or NULL. *}
+. struct bfd_section *next;
+.
+. {* The previous section in the list belonging to the BFD, or NULL. *}
+. struct bfd_section *prev;
+.
. {* A unique sequence number. *}
. unsigned int id;
.
@@ -161,12 +167,6 @@ CODE_FRAGMENT
. {* Which section in the bfd; 0..n-1 as sections are created in a bfd. *}
. unsigned int index;
.
-. {* The next section in the list belonging to the BFD, or NULL. *}
-. struct bfd_section *next;
-.
-. {* The previous section in the list belonging to the BFD, or NULL. *}
-. struct bfd_section *prev;
-.
. {* The field flags contains attributes of the section. Some
. flags are read in from the object file, and some are
. synthesized from other information. *}
@@ -467,10 +467,6 @@ CODE_FRAGMENT
. {* The output section through which to map on output. *}
. struct bfd_section *output_section;
.
-. {* The alignment requirement of the section, as an exponent of 2 -
-. e.g., 3 aligns to 2^3 (or 8). *}
-. unsigned int alignment_power;
-.
. {* If an input section, a pointer to a vector of relocation
. records for the data in this section. *}
. struct reloc_cache_entry *relocation;
@@ -482,6 +478,10 @@ CODE_FRAGMENT
. {* The number of relocation records in one of the above. *}
. unsigned reloc_count;
.
+. {* The alignment requirement of the section, as an exponent of 2 -
+. e.g., 3 aligns to 2^3 (or 8). *}
+. unsigned int alignment_power;
+.
. {* Information below is back end specific - and not always used
. or updated. *}
.
@@ -691,8 +691,8 @@ CODE_FRAGMENT
.}
.
.#define BFD_FAKE_SECTION(SEC, SYM, NAME, IDX, FLAGS) \
-. {* name, id, section_id, index, next, prev, flags, user_set_vma, *} \
-. { NAME, IDX, 0, 0, NULL, NULL, FLAGS, 0, \
+. {* name, next, prev, id, section_id, index, flags, user_set_vma, *} \
+. { NAME, NULL, NULL, IDX, 0, 0, FLAGS, 0, \
. \
. {* linker_mark, linker_has_input, gc_mark, decompress_status, *} \
. 0, 0, 1, 0, \
@@ -703,14 +703,14 @@ CODE_FRAGMENT
. {* sec_flg0, sec_flg1, sec_flg2, sec_flg3, sec_flg4, sec_flg5, *} \
. 0, 0, 0, 0, 0, 0, \
. \
-. {* vma, lma, size, rawsize, compressed_size, *} \
+. {* vma, lma, size, rawsize, compressed_size, *} \
. 0, 0, 0, 0, 0, \
. \
-. {* output_offset, output_section, alignment_power, *} \
-. 0, &SEC, 0, \
+. {* output_offset, output_section, relocation, orelocation, *} \
+. 0, &SEC, NULL, NULL, \
. \
-. {* relocation, orelocation, reloc_count, filepos, rel_filepos, *} \
-. NULL, NULL, 0, 0, 0, \
+. {* reloc_count, alignment_power, filepos, rel_filepos, *} \
+. 0, 0, 0, 0, \
. \
. {* line_filepos, userdata, contents, lineno, lineno_count, *} \
. 0, NULL, NULL, NULL, 0, \
--
Alan Modra
Australia Development Lab, IBM
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