gas/
* symbols.c (S_FORCE_RELOC): Return true for indirect functions even if !strict. * expr.c (operand): Don't convert absolute symbols to constants if S_FORCE_RELOC is true. (expr): Only reduce subtractions between different symbols if S_FORCE_RELOC is false for both of them. * write.c (fixup_segment): Don't remove symbols if S_FORCE_RELOC is true for them, regardless of their segment. gas/testsuite/ * gas/i386/ifunc-2.s, gas/i386/ifunc-2.l: New test. * gas/i386/ifunc-3.s, gas/i386/ifunc-3.d: Likeise. * gas/i386/i386.exp: Run them.
This commit is contained in:
Richard Sandiford
parent
0c98115d15
commit
c969da6473
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@ -1,3 +1,14 @@
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2010-12-02 Richard Sandiford <richard.sandiford@linaro.org>
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* symbols.c (S_FORCE_RELOC): Return true for indirect functions
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even if !strict.
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* expr.c (operand): Don't convert absolute symbols to constants
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if S_FORCE_RELOC is true.
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(expr): Only reduce subtractions between different symbols if
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S_FORCE_RELOC is false for both of them.
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* write.c (fixup_segment): Don't remove symbols if S_FORCE_RELOC
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is true for them, regardless of their segment.
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2010-12-01 Maciej W. Rozycki <macro@codesourcery.com>
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* symbols.h (dot_symbol): New declaration.
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13
gas/expr.c
13
gas/expr.c
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@ -1325,7 +1325,9 @@ operand (expressionS *expressionP, enum expr_mode mode)
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/* If we have an absolute symbol or a reg, then we know its
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value now. */
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segment = S_GET_SEGMENT (symbolP);
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if (mode != expr_defer && segment == absolute_section)
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if (mode != expr_defer
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&& segment == absolute_section
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&& !S_FORCE_RELOC (symbolP, 0))
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{
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expressionP->X_op = O_constant;
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expressionP->X_add_number = S_GET_VALUE (symbolP);
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@ -1840,7 +1842,9 @@ expr (int rankarg, /* Larger # is higher rank. */
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#ifdef md_allow_local_subtract
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&& md_allow_local_subtract (resultP, & right, rightseg)
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#endif
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&& (SEG_NORMAL (rightseg)
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&& ((SEG_NORMAL (rightseg)
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&& !S_FORCE_RELOC (resultP->X_add_symbol, 0)
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&& !S_FORCE_RELOC (right.X_add_symbol, 0))
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|| right.X_add_symbol == resultP->X_add_symbol)
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&& frag_offset_fixed_p (symbol_get_frag (resultP->X_add_symbol),
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symbol_get_frag (right.X_add_symbol),
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@ -1954,7 +1958,10 @@ expr (int rankarg, /* Larger # is higher rank. */
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else if (op_left == O_subtract)
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{
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resultP->X_add_number -= right.X_add_number;
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if (retval == rightseg && SEG_NORMAL (retval))
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if (retval == rightseg
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&& SEG_NORMAL (retval)
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&& !S_FORCE_RELOC (resultP->X_add_symbol, 0)
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&& !S_FORCE_RELOC (right.X_add_symbol, 0))
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{
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retval = absolute_section;
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rightseg = absolute_section;
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@ -2065,9 +2065,9 @@ S_FORCE_RELOC (symbolS *s, int strict)
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return ((strict
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&& ((s->bsym->flags & BSF_WEAK) != 0
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|| (s->bsym->flags & BSF_GNU_INDIRECT_FUNCTION) != 0
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|| (EXTERN_FORCE_RELOC
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&& (s->bsym->flags & BSF_GLOBAL) != 0)))
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|| (s->bsym->flags & BSF_GNU_INDIRECT_FUNCTION) != 0
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|| s->bsym->section == undefined_section
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|| bfd_is_com_section (s->bsym->section));
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}
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@ -1,3 +1,9 @@
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2010-12-02 Richard Sandiford <richard.sandiford@linaro.org>
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* gas/i386/ifunc-2.s, gas/i386/ifunc-2.l: New test.
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* gas/i386/ifunc-3.s, gas/i386/ifunc-3.d: Likeise.
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* gas/i386/i386.exp: Run them.
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2010-11-20 Richard Sandiford <rdsandiford@googlemail.com>
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* lib/gas-defs.exp (regexp_diff): Delete.
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@ -215,6 +215,8 @@ if [expr ([istarget "i*86-*-*"] || [istarget "x86_64-*-*"]) && [gas_32_check]]
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run_list_test "inval-equ-1" "-al"
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run_list_test "inval-equ-2" "-al"
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run_dump_test "ifunc"
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run_list_test "ifunc-2"
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run_dump_test "ifunc-3"
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run_list_test "l1om-inval" "-march=l1om --32"
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run_dump_test "localpic"
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run_dump_test "debug1"
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@ -0,0 +1,61 @@
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.*/ifunc-2\.s: Assembler messages:
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.*/ifunc-2\.s:4: Error: can't resolve `bar1' {\.text\.1 section} - `foo1' {\.text\.1 section}
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.*/ifunc-2\.s:5: Error: can't resolve `bar2' {\.text\.2 section} - `foo2' {\.text\.2 section}
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.*/ifunc-2\.s:6: Error: can't resolve `bar1' {\.text\.1 section} - `bar2' {\.text\.2 section}
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.*/ifunc-2\.s:7: Error: can't resolve `bar2' {\.text\.2 section} - `bar1' {\.text\.1 section}
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.*/ifunc-2\.s:8: Error: can't resolve `\.text\.1' {\.text\.1 section} - `bar1' {\.text\.1 section}
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.*/ifunc-2\.s:9: Error: can't resolve `\.text\.1' {\.text\.1 section} - `bar2' {\.text\.2 section}
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.*/ifunc-2\.s:10: Error: can't resolve `bar1' {\.text\.1 section} - `abs1' {\*ABS\* section}
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.*/ifunc-2\.s:11: Error: can't resolve `abs1' {\*ABS\* section} - `bar1' {\.text\.1 section}
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.*/ifunc-2\.s:12: Error: can't resolve `\.text\.1' {\.text\.1 section} - `bar1' {\.text\.1 section}
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.*/ifunc-2\.s:19: Error: can't resolve `bar1' {\.text\.1 section} - `foo1' {\.text\.1 section}
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.*/ifunc-2\.s:20: Error: can't resolve `bar2' {\.text\.2 section} - `foo2' {\.text\.2 section}
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.*/ifunc-2\.s:21: Error: can't resolve `bar1' {\.text\.1 section} - `bar2' {\.text\.2 section}
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.*/ifunc-2\.s:22: Error: can't resolve `bar2' {\.text\.2 section} - `bar1' {\.text\.1 section}
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.*/ifunc-2\.s:23: Error: can't resolve `\.text\.1' {\.text\.1 section} - `bar1' {\.text\.1 section}
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.*/ifunc-2\.s:24: Error: can't resolve `\.text\.1' {\.text\.1 section} - `bar2' {\.text\.2 section}
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.*/ifunc-2\.s:25: Error: can't resolve `bar1' {\.text\.1 section} - `abs1' {\*ABS\* section}
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.*/ifunc-2\.s:26: Error: can't resolve `abs1' {\*ABS\* section} - `bar1' {\.text\.1 section}
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.*/ifunc-2\.s:27: Error: can't resolve `\.text\.1' {\.text\.1 section} - `bar1' {\.text\.1 section}
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.*/ifunc-2\.s:34: Error: can't resolve `bar1' {\.text\.1 section} - `foo1' {\.text\.1 section}
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.*/ifunc-2\.s:35: Error: can't resolve `bar2' {\.text\.2 section} - `foo2' {\.text\.2 section}
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.*/ifunc-2\.s:36: Error: can't resolve `bar1' {\.text\.1 section} - `bar2' {\.text\.2 section}
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.*/ifunc-2\.s:37: Error: can't resolve `bar2' {\.text\.2 section} - `bar1' {\.text\.1 section}
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.*/ifunc-2\.s:38: Error: can't resolve `\.text\.1' {\.text\.1 section} - `bar1' {\.text\.1 section}
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.*/ifunc-2\.s:39: Error: can't resolve `\.text\.1' {\.text\.1 section} - `bar2' {\.text\.2 section}
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.*/ifunc-2\.s:40: Error: can't resolve `bar1' {\.text\.1 section} - `abs1' {\*ABS\* section}
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.*/ifunc-2\.s:41: Error: can't resolve `abs1' {\*ABS\* section} - `bar1' {\.text\.1 section}
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.*/ifunc-2\.s:42: Error: can't resolve `\.text\.1' {\.text\.1 section} - `bar1' {\.text\.1 section}
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.*/ifunc-2\.s:44: Error: can't resolve `abs1' {\*ABS\* section} - `abs2' {\*ABS\* section}
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.*/ifunc-2\.s:45: Error: can't resolve `abs2' {\*ABS\* section} - `abs1' {\*ABS\* section}
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.*/ifunc-2\.s:50: Error: can't resolve `abs1' {\*ABS\* section} - `abs2' {\*ABS\* section}
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.*/ifunc-2\.s:51: Error: can't resolve `abs2' {\*ABS\* section} - `abs1' {\*ABS\* section}
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.*/ifunc-2\.s:56: Error: can't resolve `abs1' {\*ABS\* section} - `abs2' {\*ABS\* section}
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.*/ifunc-2\.s:57: Error: can't resolve `abs2' {\*ABS\* section} - `abs1' {\*ABS\* section}
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.*/ifunc-2\.s:62: Error: can't resolve `bar1' {\.text\.1 section} - `foo1' {\.text\.1 section}
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.*/ifunc-2\.s:63: Error: can't resolve `bar2' {\.text\.2 section} - `foo2' {\.text\.2 section}
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.*/ifunc-2\.s:64: Error: can't resolve `bar1' {\.text\.1 section} - `bar2' {\.text\.2 section}
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.*/ifunc-2\.s:65: Error: can't resolve `bar2' {\.text\.2 section} - `bar1' {\.text\.1 section}
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.*/ifunc-2\.s:66: Error: can't resolve `\.text\.2' {\.text\.2 section} - `bar1' {\.text\.1 section}
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.*/ifunc-2\.s:67: Error: can't resolve `\.text\.2' {\.text\.2 section} - `bar2' {\.text\.2 section}
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.*/ifunc-2\.s:68: Error: can't resolve `bar2' {\.text\.2 section} - `abs1' {\*ABS\* section}
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.*/ifunc-2\.s:69: Error: can't resolve `abs1' {\*ABS\* section} - `bar2' {\.text\.2 section}
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.*/ifunc-2\.s:70: Error: can't resolve `\.text\.2' {\.text\.2 section} - `bar2' {\.text\.2 section}
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.*/ifunc-2\.s:77: Error: can't resolve `bar1' {\.text\.1 section} - `foo1' {\.text\.1 section}
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.*/ifunc-2\.s:78: Error: can't resolve `bar2' {\.text\.2 section} - `foo2' {\.text\.2 section}
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.*/ifunc-2\.s:79: Error: can't resolve `bar1' {\.text\.1 section} - `bar2' {\.text\.2 section}
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.*/ifunc-2\.s:80: Error: can't resolve `bar2' {\.text\.2 section} - `bar1' {\.text\.1 section}
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.*/ifunc-2\.s:81: Error: can't resolve `\.text\.2' {\.text\.2 section} - `bar1' {\.text\.1 section}
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.*/ifunc-2\.s:82: Error: can't resolve `\.text\.2' {\.text\.2 section} - `bar2' {\.text\.2 section}
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.*/ifunc-2\.s:83: Error: can't resolve `bar2' {\.text\.2 section} - `abs1' {\*ABS\* section}
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.*/ifunc-2\.s:84: Error: can't resolve `abs1' {\*ABS\* section} - `bar2' {\.text\.2 section}
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.*/ifunc-2\.s:85: Error: can't resolve `\.text\.2' {\.text\.2 section} - `bar2' {\.text\.2 section}
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.*/ifunc-2\.s:92: Error: can't resolve `bar1' {\.text\.1 section} - `foo1' {\.text\.1 section}
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.*/ifunc-2\.s:93: Error: can't resolve `bar2' {\.text\.2 section} - `foo2' {\.text\.2 section}
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.*/ifunc-2\.s:94: Error: can't resolve `bar1' {\.text\.1 section} - `bar2' {\.text\.2 section}
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.*/ifunc-2\.s:95: Error: can't resolve `bar2' {\.text\.2 section} - `bar1' {\.text\.1 section}
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.*/ifunc-2\.s:96: Error: can't resolve `\.text\.2' {\.text\.2 section} - `bar1' {\.text\.1 section}
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.*/ifunc-2\.s:97: Error: can't resolve `\.text\.2' {\.text\.2 section} - `bar2' {\.text\.2 section}
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.*/ifunc-2\.s:98: Error: can't resolve `bar2' {\.text\.2 section} - `abs1' {\*ABS\* section}
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.*/ifunc-2\.s:99: Error: can't resolve `abs1' {\*ABS\* section} - `bar2' {\.text\.2 section}
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.*/ifunc-2\.s:100: Error: can't resolve `\.text\.2' {\.text\.2 section} - `bar2' {\.text\.2 section}
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@ -0,0 +1,100 @@
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.section .text.1,"ax",@progbits
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start1:
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.long bar1-foo1
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.long bar2-foo2
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.long bar1-bar2
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.long bar2-bar1
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.long start1-bar1
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.long start1-bar2
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.long bar1-abs1
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.long abs1-bar1
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.long .-bar1
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.type foo1,%gnu_indirect_function
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foo1:
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ret
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.size foo1,.-foo1
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.long bar1-foo1
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.long bar2-foo2
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.long bar1-bar2
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.long bar2-bar1
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.long start1-bar1
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.long start1-bar2
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.long bar1-abs1
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.long abs1-bar1
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.long .-bar1
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.type bar1,%gnu_indirect_function
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bar1:
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ret
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.size bar1,.-bar1
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.long bar1-foo1
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.long bar2-foo2
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.long bar1-bar2
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.long bar2-bar1
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.long start1-bar1
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.long start1-bar2
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.long bar1-abs1
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.long abs1-bar1
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.long .-bar1
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.long abs1-abs2
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.long abs2-abs1
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.equ abs1,0x11223300
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.type abs1,%gnu_indirect_function
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.long abs1-abs2
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.long abs2-abs1
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.equ abs2,0x11223380
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.type abs2,%gnu_indirect_function
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.long abs1-abs2
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.long abs2-abs1
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.section .text.2,"ax",@progbits
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start2:
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.long bar1-foo1
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.long bar2-foo2
|
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.long bar1-bar2
|
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.long bar2-bar1
|
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.long start2-bar1
|
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.long start2-bar2
|
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.long bar2-abs1
|
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.long abs1-bar2
|
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.long .-bar2
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.type foo2,%gnu_indirect_function
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foo2:
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ret
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.size foo2,.-foo2
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|
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.long bar1-foo1
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.long bar2-foo2
|
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.long bar1-bar2
|
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.long bar2-bar1
|
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.long start2-bar1
|
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.long start2-bar2
|
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.long bar2-abs1
|
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.long abs1-bar2
|
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.long .-bar2
|
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.type bar2,%gnu_indirect_function
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bar2:
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ret
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.size bar2,.-bar2
|
||||
|
||||
.long bar1-foo1
|
||||
.long bar2-foo2
|
||||
.long bar1-bar2
|
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.long bar2-bar1
|
||||
.long start2-bar1
|
||||
.long start2-bar2
|
||||
.long bar2-abs1
|
||||
.long abs1-bar2
|
||||
.long .-bar2
|
||||
|
|
@ -0,0 +1,57 @@
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#readelf: --relocs --syms -x .text.1 -x .text.2
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#name: i386 ifunc 3
|
||||
|
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Relocation section '\.rel\.text\.1' at offset .* contains .* entries:
|
||||
Offset Info Type Sym.Value Sym. Name
|
||||
00000000 ........ R_386_PC32 bar1\(\) bar1
|
||||
00000004 ........ R_386_PC32 bar2\(\) bar2
|
||||
00000008 ........ R_386_PC32 bar1\(\) bar1
|
||||
0000000c ........ R_386_PC32 bar2\(\) bar2
|
||||
00000010 ........ R_386_32 bar1\(\) bar1
|
||||
00000018 ........ R_386_PC32 bar1\(\) bar1
|
||||
0000001c ........ R_386_PC32 bar2\(\) bar2
|
||||
00000020 ........ R_386_PC32 bar1\(\) bar1
|
||||
00000024 ........ R_386_PC32 bar2\(\) bar2
|
||||
00000028 ........ R_386_32 bar1\(\) bar1
|
||||
0000002c ........ R_386_PC32 abs1\(\) abs1
|
||||
00000030 ........ R_386_PC32 abs1\(\) abs1
|
||||
00000034 ........ R_386_32 abs1\(\) abs1
|
||||
00000038 ........ R_386_PC32 abs1\(\) abs1
|
||||
0000003c ........ R_386_PC32 abs1\(\) abs1
|
||||
00000040 ........ R_386_32 abs1\(\) abs1
|
||||
|
||||
Relocation section '\.rel\.text\.2' at offset .* contains .* entries:
|
||||
Offset Info Type Sym.Value Sym. Name
|
||||
00000000 ........ R_386_PC32 bar1\(\) bar1
|
||||
00000004 ........ R_386_PC32 bar2\(\) bar2
|
||||
00000008 ........ R_386_PC32 bar1\(\) bar1
|
||||
0000000c ........ R_386_PC32 bar2\(\) bar2
|
||||
00000010 ........ R_386_32 bar2\(\) bar2
|
||||
00000018 ........ R_386_PC32 bar1\(\) bar1
|
||||
0000001c ........ R_386_PC32 bar2\(\) bar2
|
||||
00000020 ........ R_386_PC32 bar1\(\) bar1
|
||||
00000024 ........ R_386_PC32 bar2\(\) bar2
|
||||
00000028 ........ R_386_32 bar2\(\) bar2
|
||||
|
||||
Symbol table '.symtab' contains .* entries:
|
||||
Num: Value Size Type Bind Vis Ndx Name
|
||||
#...
|
||||
.*: 00000014 1 IFUNC LOCAL DEFAULT .* bar1
|
||||
.*: 00000014 1 IFUNC LOCAL DEFAULT .* bar2
|
||||
#...
|
||||
.*: 11223300 0 IFUNC LOCAL DEFAULT ABS abs1
|
||||
#...
|
||||
|
||||
Hex dump of section '\.text\.1':
|
||||
NOTE: This section has relocations against it, but these have NOT been applied to this dump\.
|
||||
0x00000000 00000000 00000000 08000000 0c000000 .*
|
||||
0x00000010 4054ffff c38d7600 00000000 00000000 .*
|
||||
0x00000020 20000000 24000000 4054ffff 00000000 .*
|
||||
0x00000030 30000000 4054ffff 00000000 3c000000 .*
|
||||
0x00000040 4054ffff .*
|
||||
|
||||
Hex dump of section '\.text\.2':
|
||||
NOTE: This section has relocations against it, but these have NOT been applied to this dump\.
|
||||
0x00000000 00000000 00000000 08000000 0c000000 .*
|
||||
0x00000010 4054ffff c38d7600 00000000 00000000 .*
|
||||
0x00000020 20000000 24000000 4054ffff .*
|
||||
|
|
@ -0,0 +1,54 @@
|
|||
.section .text.1,"ax",@progbits
|
||||
|
||||
start1:
|
||||
.long bar1-.
|
||||
.long bar2-.
|
||||
.long bar1-start1
|
||||
.long bar2-start1
|
||||
.long bar1-base
|
||||
|
||||
.type bar1,%gnu_indirect_function
|
||||
bar1:
|
||||
ret
|
||||
.size bar1,.-bar1
|
||||
.align 4
|
||||
|
||||
.long bar1-.
|
||||
.long bar2-.
|
||||
.long bar1-start1
|
||||
.long bar2-start1
|
||||
.long bar1-base
|
||||
|
||||
.long abs1-.
|
||||
.long abs1-start1
|
||||
.long abs1-base
|
||||
|
||||
.equ abs1,0x11223300
|
||||
.type abs1,%gnu_indirect_function
|
||||
|
||||
.long abs1-.
|
||||
.long abs1-start1
|
||||
.long abs1-base
|
||||
|
||||
.section .text.2,"ax",@progbits
|
||||
|
||||
start2:
|
||||
.long bar1-.
|
||||
.long bar2-.
|
||||
.long bar1-start2
|
||||
.long bar2-start2
|
||||
.long bar2-base
|
||||
|
||||
.type bar2,%gnu_indirect_function
|
||||
bar2:
|
||||
ret
|
||||
.size bar2,.-bar2
|
||||
.align 4
|
||||
|
||||
.long bar1-.
|
||||
.long bar2-.
|
||||
.long bar1-start2
|
||||
.long bar2-start2
|
||||
.long bar2-base
|
||||
|
||||
.equ base,0xabc0
|
||||
|
|
@ -932,6 +932,8 @@ fixup_segment (fixS *fixP, segT this_segment)
|
|||
sub_symbol_segment = S_GET_SEGMENT (fixP->fx_subsy);
|
||||
if (fixP->fx_addsy != NULL
|
||||
&& sub_symbol_segment == add_symbol_segment
|
||||
&& !S_FORCE_RELOC (fixP->fx_addsy, 0)
|
||||
&& !S_FORCE_RELOC (fixP->fx_subsy, 0)
|
||||
&& !TC_FORCE_RELOCATION_SUB_SAME (fixP, add_symbol_segment))
|
||||
{
|
||||
add_number += S_GET_VALUE (fixP->fx_addsy);
|
||||
|
|
@ -945,6 +947,7 @@ fixup_segment (fixS *fixP, segT this_segment)
|
|||
#endif
|
||||
}
|
||||
else if (sub_symbol_segment == absolute_section
|
||||
&& !S_FORCE_RELOC (fixP->fx_subsy, 0)
|
||||
&& !TC_FORCE_RELOCATION_SUB_ABS (fixP, add_symbol_segment))
|
||||
{
|
||||
add_number -= S_GET_VALUE (fixP->fx_subsy);
|
||||
|
|
@ -952,6 +955,7 @@ fixup_segment (fixS *fixP, segT this_segment)
|
|||
fixP->fx_subsy = NULL;
|
||||
}
|
||||
else if (sub_symbol_segment == this_segment
|
||||
&& !S_FORCE_RELOC (fixP->fx_subsy, 0)
|
||||
&& !TC_FORCE_RELOCATION_SUB_LOCAL (fixP, add_symbol_segment))
|
||||
{
|
||||
add_number -= S_GET_VALUE (fixP->fx_subsy);
|
||||
|
|
@ -994,6 +998,7 @@ fixup_segment (fixS *fixP, segT this_segment)
|
|||
if (fixP->fx_addsy)
|
||||
{
|
||||
if (add_symbol_segment == this_segment
|
||||
&& !S_FORCE_RELOC (fixP->fx_addsy, 0)
|
||||
&& !TC_FORCE_RELOCATION_LOCAL (fixP))
|
||||
{
|
||||
/* This fixup was made when the symbol's segment was
|
||||
|
|
@ -1007,6 +1012,7 @@ fixup_segment (fixS *fixP, segT this_segment)
|
|||
fixP->fx_pcrel = 0;
|
||||
}
|
||||
else if (add_symbol_segment == absolute_section
|
||||
&& !S_FORCE_RELOC (fixP->fx_addsy, 0)
|
||||
&& !TC_FORCE_RELOCATION_ABS (fixP))
|
||||
{
|
||||
add_number += S_GET_VALUE (fixP->fx_addsy);
|
||||
|
|
|
|||
Loading…
Reference in New Issue