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From http://sources.redhat.com/cgi-bin/cvsweb.cgi/src/gas/config/tc-arm.c.diff?r1=1.168&r2=1.169&cvsroot=src
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See also http://lists.arm.linux.org.uk/pipermail/linux-arm-kernel/2004-July/023128.html,
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"[CRITICAL PATCH] 2.6: fix silent build error]"
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Revision 1.169, Fri Jul 2 11:12:29 2004 UTC (19 hours, 4 minutes ago) by nickc
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Branch: MAIN
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CVS Tags: binutils_latest_snapshot, HEAD
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Changes since 1.168: +14 -1 lines
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(md_apply_fix3:BFD_RELOC_ARM_IMMEDIATE): Do not allow values which have come
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from undefined symbols.
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Always consider this fixup to have been processed as a reloc cannot be
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generated for it.
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===================================================================
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RCS file: /cvs/src/src/gas/config/tc-arm.c,v
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retrieving revision 1.168
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retrieving revision 1.169
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diff -u -r1.168 -r1.169
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--- src/gas/config/tc-arm.c 2004/04/30 10:51:12 1.168
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+++ src/gas/config/tc-arm.c 2004/07/02 11:12:29 1.169
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@@ -12186,6 +12186,20 @@
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switch (fixP->fx_r_type)
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{
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case BFD_RELOC_ARM_IMMEDIATE:
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+ /* We claim that this fixup has been processed here,
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+ even if in fact we generate an error because we do
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+ not have a reloc for it, so tc_gen_reloc will reject it. */
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+ fixP->fx_done = 1;
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+
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+ if (fixP->fx_addsy
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+ && ! S_IS_DEFINED (fixP->fx_addsy))
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+ {
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+ as_bad_where (fixP->fx_file, fixP->fx_line,
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+ _("undefined symbol %s used as an immediate value"),
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+ S_GET_NAME (fixP->fx_addsy));
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+ break;
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+ }
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+
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newimm = validate_immediate (value);
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temp = md_chars_to_number (buf, INSN_SIZE);
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@@ -12202,7 +12216,6 @@
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newimm |= (temp & 0xfffff000);
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md_number_to_chars (buf, (valueT) newimm, INSN_SIZE);
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- fixP->fx_done = 1;
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break;
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case BFD_RELOC_ARM_ADRL_IMMEDIATE:
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