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https://sourceware.org/git/binutils-gdb.git
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bfd/
* xcofflink.c (xcoff_mark_symbol_by_name): New function. (bfd_xcoff_size_dynamic_sections): Use it to mark the entry, init and fini functions. Do garbage collection for objects without an entry point too. ld/testsuite/ * ld-powerpc/aix-gc-1.s, ld-powerpc/aix-gc-1.ex, ld-powerpc/aix-gc-1-32.dd, ld-powerpc/aix-gc-1-64.dd, ld-powerpc/aix-weak-1-gcdso.dnd, ld-powerpc/aix-weak-1-gcdso.hd, ld-powerpc/aix-weak-1-gcdso.nd: New tests. * ld-powerpc/aix52.exp: Run them.
This commit is contained in:
Richard Sandiford
parent
8602d4fea6
commit
7d504122ef
@ -1,3 +1,10 @@
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2009-03-14 Richard Sandiford <r.sandiford@uk.ibm.com>
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* xcofflink.c (xcoff_mark_symbol_by_name): New function.
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(bfd_xcoff_size_dynamic_sections): Use it to mark the entry,
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init and fini functions. Do garbage collection for objects
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without an entry point too.
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2009-03-14 Richard Sandiford <r.sandiford@uk.ibm.com>
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* coffcode.h (coff_pointerize_aux_hook): Update CSECT_SYM_P to
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@ -2482,6 +2482,30 @@ xcoff_mark_symbol (struct bfd_link_info *info, struct xcoff_link_hash_entry *h)
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return TRUE;
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}
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/* Look for a symbol called NAME. If the symbol is defined, mark it.
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If the symbol exists, set FLAGS. */
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static bfd_boolean
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xcoff_mark_symbol_by_name (struct bfd_link_info *info,
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const char *name, unsigned int flags)
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{
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struct xcoff_link_hash_entry *h;
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h = xcoff_link_hash_lookup (xcoff_hash_table (info), name,
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FALSE, FALSE, TRUE);
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if (h != NULL)
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{
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h->flags |= flags;
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if (h->root.type == bfd_link_hash_defined
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|| h->root.type == bfd_link_hash_defweak)
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{
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if (!xcoff_mark (info, h->root.u.def.section))
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return FALSE;
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}
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}
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return TRUE;
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}
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/* The mark phase of garbage collection. For a given section, mark
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it, and all the sections which define symbols to which it refers.
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Because this function needs to look at the relocs, we also count
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@ -3177,7 +3201,6 @@ bfd_xcoff_size_dynamic_sections (bfd *output_bfd,
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asection **special_sections,
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bfd_boolean rtld)
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{
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struct xcoff_link_hash_entry *hentry;
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asection *lsec;
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struct xcoff_loader_info ldinfo;
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int i;
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@ -3216,15 +3239,6 @@ bfd_xcoff_size_dynamic_sections (bfd *output_bfd,
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xcoff_hash_table (info)->textro = textro;
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xcoff_hash_table (info)->rtld = rtld;
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hentry = NULL;
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if (entry != NULL)
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{
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hentry = xcoff_link_hash_lookup (xcoff_hash_table (info), entry,
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FALSE, FALSE, TRUE);
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if (hentry != NULL)
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hentry->flags |= XCOFF_ENTRY;
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}
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/* __rtinit */
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if (info->init_function || info->fini_function || rtld)
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{
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@ -3277,11 +3291,7 @@ bfd_xcoff_size_dynamic_sections (bfd *output_bfd,
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}
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/* Garbage collect unused sections. */
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if (info->relocatable
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|| ! gc
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|| hentry == NULL
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|| (hentry->root.type != bfd_link_hash_defined
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&& hentry->root.type != bfd_link_hash_defweak))
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if (info->relocatable || !gc)
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{
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gc = FALSE;
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xcoff_hash_table (info)->gc = FALSE;
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@ -3309,7 +3319,14 @@ bfd_xcoff_size_dynamic_sections (bfd *output_bfd,
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}
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else
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{
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if (! xcoff_mark (info, hentry->root.u.def.section))
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if (entry != NULL
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&& !xcoff_mark_symbol_by_name (info, entry, XCOFF_ENTRY))
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goto error_return;
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if (info->init_function != NULL
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&& !xcoff_mark_symbol_by_name (info, info->init_function, 0))
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goto error_return;
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if (info->fini_function != NULL
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&& !xcoff_mark_symbol_by_name (info, info->fini_function, 0))
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goto error_return;
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xcoff_sweep (info);
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xcoff_hash_table (info)->gc = TRUE;
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@ -1,3 +1,11 @@
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2009-03-14 Richard Sandiford <r.sandiford@uk.ibm.com>
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* ld-powerpc/aix-gc-1.s, ld-powerpc/aix-gc-1.ex,
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ld-powerpc/aix-gc-1-32.dd, ld-powerpc/aix-gc-1-64.dd,
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ld-powerpc/aix-weak-1-gcdso.dnd, ld-powerpc/aix-weak-1-gcdso.hd,
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ld-powerpc/aix-weak-1-gcdso.nd: New tests.
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* ld-powerpc/aix52.exp: Run them.
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2009-03-14 Richard Sandiford <r.sandiford@uk.ibm.com>
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* ld-powerpc/aix-glink-2a.s, ld-powerpc/aix-glink-2a.ex,
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67
ld/testsuite/ld-powerpc/aix-gc-1-32.dd
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67
ld/testsuite/ld-powerpc/aix-gc-1-32.dd
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@ -0,0 +1,67 @@
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.*
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Disassembly of section \.text:
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10000000 <\.init_function>:
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10000000: 80 22 00 00 l r1,0\(r2\)
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10000004 <\.fini_function>:
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10000004: 80 22 00 04 l r1,4\(r2\)
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10000008 <\.exported_global>:
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10000008: 48 00 00 09 bl 10000010 <\.indirect2>
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1000000c <\.indirect1>:
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1000000c: 81 08 00 04 l r8,4\(r8\)
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10000010 <\.indirect2>:
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10000010: 81 08 00 08 l r8,8\(r8\)
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10000014 <\.indirect3>:
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10000014: 81 08 00 0c l r8,12\(r8\)
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Disassembly of section \.data:
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20000000 <block>:
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# Pointer to indirect3.
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20000000: 20 00 00 98 .*
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20000004: 11 22 33 44 .*
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20000008 <__rtinit>:
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#...
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20000068 <exported_global>:
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20000068: 10 00 00 08 .*
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2000006c: 20 00 00 a4 .*
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20000070: 00 00 00 00 .*
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20000074 <init_function>:
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20000074: 10 00 00 00 .*
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20000078: 20 00 00 a4 .*
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2000007c: 00 00 00 00 .*
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20000080 <indirect1>:
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20000080: 10 00 00 0c .*
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20000084: 20 00 00 a4 .*
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20000088: 00 00 00 00 .*
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2000008c <fini_function>:
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2000008c: 10 00 00 04 .*
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20000090: 20 00 00 a4 .*
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20000094: 00 00 00 00 .*
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20000098 <indirect3>:
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20000098: 10 00 00 14 .*
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2000009c: 20 00 00 a4 .*
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200000a0: 00 00 00 00 .*
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200000a4 <TOC>:
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# TOC entry for indirect1.
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200000a4: 20 00 00 80 .*
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200000a8 <block>:
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# TOC entry for block.
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200000a8: 20 00 00 00 .*
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200000ac: 00 00 00 00 .*
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81
ld/testsuite/ld-powerpc/aix-gc-1-64.dd
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81
ld/testsuite/ld-powerpc/aix-gc-1-64.dd
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@ -0,0 +1,81 @@
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.*
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Disassembly of section \.text:
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0000000010000000 <\.init_function>:
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10000000: e8 22 00 00 ld r1,0\(r2\)
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0000000010000004 <\.fini_function>:
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10000004: e8 22 00 08 ld r1,8\(r2\)
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0000000010000008 <\.exported_global>:
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10000008: 48 00 00 09 bl 10000010 <\.indirect2>
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000000001000000c <\.indirect1>:
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1000000c: 81 08 00 04 lwz r8,4\(r8\)
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0000000010000010 <\.indirect2>:
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10000010: 81 08 00 08 lwz r8,8\(r8\)
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0000000010000014 <\.indirect3>:
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10000014: 81 08 00 0c lwz r8,12\(r8\)
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Disassembly of section \.data:
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0000000020000000 <block>:
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# Pointer to indirect3.
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20000000: 20 00 00 e0 .*
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20000004: 11 22 33 44 .*
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0000000020000008 <__rtinit>:
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#...
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0000000020000080 <exported_global>:
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20000080: 00 00 00 00 .*
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20000084: 10 00 00 08 .*
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20000088: 00 00 00 00 .*
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2000008c: 20 00 00 f8 .*
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20000090: 00 00 00 00 .*
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20000094: 00 00 00 00 .*
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0000000020000098 <init_function>:
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20000098: 00 00 00 00 .*
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2000009c: 10 00 00 00 .*
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200000a0: 00 00 00 00 .*
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200000a4: 20 00 00 f8 .*
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200000a8: 00 00 00 00 .*
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200000ac: 00 00 00 00 .*
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00000000200000b0 <indirect1>:
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200000b0: 00 00 00 00 .*
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200000b4: 10 00 00 0c .*
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200000b8: 00 00 00 00 .*
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200000bc: 20 00 00 f8 .*
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200000c0: 00 00 00 00 .*
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200000c4: 00 00 00 00 .*
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00000000200000c8 <fini_function>:
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200000c8: 00 00 00 00 .*
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200000cc: 10 00 00 04 .*
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200000d0: 00 00 00 00 .*
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200000d4: 20 00 00 f8 .*
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200000d8: 00 00 00 00 .*
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200000dc: 00 00 00 00 .*
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00000000200000e0 <indirect3>:
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200000e0: 00 00 00 00 .*
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200000e4: 10 00 00 14 .*
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200000e8: 00 00 00 00 .*
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200000ec: 20 00 00 f8 .*
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200000f0: 00 00 00 00 .*
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200000f4: 00 00 00 00 .*
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00000000200000f8 <TOC>:
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200000f8: 00 00 00 00 .*
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200000fc: 20 00 00 b0 .*
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0000000020000100 <block>:
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20000100: 00 00 00 00 .*
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20000104: 20 00 00 00 .*
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1
ld/testsuite/ld-powerpc/aix-gc-1.ex
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1
ld/testsuite/ld-powerpc/aix-gc-1.ex
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@ -0,0 +1 @@
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exported_global
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55
ld/testsuite/ld-powerpc/aix-gc-1.s
Normal file
55
ld/testsuite/ld-powerpc/aix-gc-1.s
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@ -0,0 +1,55 @@
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.macro loadtoc,sym
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.if size == 32
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lwz 1,\sym(2)
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.else
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ld 1,\sym(2)
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.endif
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.endm
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.toc
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LC01: .tc indirect1[TC],indirect1[RW]
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LC02: .tc block[TC],block[RW]
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.csect .unused_local[PR]
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.unused_local:
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bl .unused_global
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.globl .init_function
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.csect .init_function[PR]
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.init_function:
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loadtoc LC01
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.globl .fini_function
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.csect .fini_function[PR]
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.fini_function:
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loadtoc LC02
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.globl .unused_global
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.csect .unused_global[PR]
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.unused_global:
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bl .unused_local
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.globl .exported_global
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.csect .exported_global[PR]
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.exported_global:
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bl .indirect2
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.globl .indirect1
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.csect .indirect1[PR]
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.indirect1:
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lwz 8,4(8)
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.csect .indirect2[PR]
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.indirect2:
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lwz 8,8(8)
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.globl .indirect3
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.csect .indirect3[PR]
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.indirect3:
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lwz 8,12(8)
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.globl block
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.csect block[RW]
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block:
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.long indirect3
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.long 0x11223344
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17
ld/testsuite/ld-powerpc/aix-weak-1-gcdso.dnd
Normal file
17
ld/testsuite/ld-powerpc/aix-weak-1-gcdso.dnd
Normal file
@ -0,0 +1,17 @@
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# Comments are (aix-weak-1a.s type) wins over/loses to (aix-weak-1b.s type)
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# (strong common) loses to (strong data)
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0*1000000c D a
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# (strong common) wins over (weak data)
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0*10000018 B b
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# (strong data) wins over (strong common)
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0*10000000 D c
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# (weak data) loses to (strong common)
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0*10000020 B d
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# (weak common) loses to (strong data)
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0*10000010 D e
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# (weak common) wins over (weak data)
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0*1000001c W f
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# (strong data) wins over (weak common)
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0*10000004 D g
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# (weak data) wins over (weak common)
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0*10000008 W h
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12
ld/testsuite/ld-powerpc/aix-weak-1-gcdso.hd
Normal file
12
ld/testsuite/ld-powerpc/aix-weak-1-gcdso.hd
Normal file
@ -0,0 +1,12 @@
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.*
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Sections:
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Idx Name * Size * VMA * LMA * File off *Algn
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*0 \.text * 0+00 * 0*10000000 * 0*10000000 * [^ ]+ * 2\*\*2
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*ALLOC, LOAD, CODE
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*1 \.data * 0+18 * 0*10000000 * 0*10000000 * [^ ]+ * 2\*\*3
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*CONTENTS, ALLOC, LOAD, DATA
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# Should only have 3 three common symbols.
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*2 \.bss * 0+0c * 0*10000018 * 0*10000018 * [^ ]+ * 2\*\*3
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*ALLOC
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#pass
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22
ld/testsuite/ld-powerpc/aix-weak-1-gcdso.nd
Normal file
22
ld/testsuite/ld-powerpc/aix-weak-1-gcdso.nd
Normal file
@ -0,0 +1,22 @@
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# Comments are (aix-weak-1a.s type) wins over/loses to (aix-weak-1b.s type)
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# (strong common) loses to (strong data)
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0*1000000c d a
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0*1000000c D a
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# (strong common) wins over (weak data)
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0*10000018 B b
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# (strong data) wins over (strong common)
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0*10000000 d c
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0*10000000 D c
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# (weak data) loses to (strong common)
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0*10000020 B d
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# (weak common) loses to (strong data)
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0*10000010 d e
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0*10000010 D e
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# (weak common) wins over (weak data)
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0*1000001c W f
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# (strong data) wins over (weak common)
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0*10000004 d g
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0*10000004 D g
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# (weak data) wins over (weak common)
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0*10000008 d h
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0*10000008 W h
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@ -108,6 +108,12 @@ set aix52tests {
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{nm -D aix-no-dup-syms-1-dso.dnd} {objdump -R aix-no-dup-syms-1-dso.drd}}
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"aix-no-dup-syms-1.so"}
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{"Garbage collection test 1"
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"-shared -binitfini:init_function:fini_function -bE:aix-gc-1.ex"
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"" {aix-gc-1.s}
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{{objdump {-dz -j.text -j.data} aix-gc-1-SIZE.dd}}
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"aix-gc-1.so"}
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{"Glink test 1"
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"-shared -bE:aix-glink-1.ex --unresolved-symbols=ignore-all"
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"" {aix-glink-1.s}
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@ -156,6 +162,12 @@ set aix52tests {
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{nm -D aix-weak-1-dso.dnd}}
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"aix-weak-1-nogc.so"}
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{"Weak test 1 (shared, gc)" "-shared -bE:aix-weak-1.ex"
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"" {aix-weak-1a.s aix-weak-1b.s}
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{{nm {} aix-weak-1-gcdso.nd} {objdump -h aix-weak-1-gcdso.hd}
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{nm -D aix-weak-1-gcdso.dnd}}
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"aix-weak-1-gc.so"}
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{"Weak test 2 (library 1)" "-shared -bE:aix-weak-2a.ex"
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"" {aix-weak-2a.s}
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{{nm -D aix-weak-2a.nd}}
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