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authorAlan Modra <amodra@gmail.com>2022-06-12 16:29:05 +0930
committerAlan Modra <amodra@gmail.com>2022-06-14 10:03:55 +0930
commitd712f2768ac5e71027657d85b921fc0e85d94bcd (patch)
tree5725d2e6d081faee5bc818e5c65af4dfa908a16d /ld
parent5f269b46201975658dc5f4218acc6d836fa12ab6 (diff)
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BFD_RELOC_MIPS_16
MIPS should not be using BFD_RELOC_16 for its R_MIPS_16 relocation, since R_MIPS_16 specifies a 16-bit field in a 32-bit word. BFD_RELOC_16, emitted by generic code to handle fixups on 16-bit data directives, expects fixups to operate on the whole of a 16-bit word. This patch corrects the problem by using BFD_RELOC_MIPS_16, a new bfd reloc that is used to generate R_MIPS_16. BFD_RELOC_16 is handled in md_apply_fix for cases where the fixup can be applied at assembly time. Like BFD_RELOC_8, BFD_RELOC_16 now has no corresponding object file relocation, and thus .half, .hword, .short and .dc.w must be resolved at assembly time. BFD_RELOC_MIPS_REL16 is removed by this patch since it isn't used. PR 3243 PR 26542 * reloc.c (BFD_RELOC_MIPS_16): Rename from BFD_RELOC_MIPS_REL16. * elf32-mips.c (mips_reloc_map): Map BFD_RELOC_MIPS_16 to R_MIPS_16. * elf64-mips.c (mips_reloc_map): Likewise, delete BFD_RELOC_MIPS_REL16. * elfn32-mips.c (mips_reloc_map): Likewise. * libbfd.h: Regenerate. * bfd-in2.h: Regenerate. gas/ * config/tc-mips.c (append_insn): Handle BFD_RELOC_MIPS_16. (macro_build): Likewise. (mips_percent_op <%half>): Generate BFD_RELOC_MIPS_16. (md_apply_fix): Handle BFD_RELOC_16 and BFD_RELOC_MIPS_16 when fx_done. ld/ * testsuite/ld-mips-elf/reloc-local-overflow.d, * testsuite/ld-mips-elf/reloc-local-overflow.s: Rewrite.
Diffstat (limited to 'ld')
-rw-r--r--ld/testsuite/ld-mips-elf/reloc-local-overflow.d4
-rw-r--r--ld/testsuite/ld-mips-elf/reloc-local-overflow.s11
2 files changed, 6 insertions, 9 deletions
diff --git a/ld/testsuite/ld-mips-elf/reloc-local-overflow.d b/ld/testsuite/ld-mips-elf/reloc-local-overflow.d
index 98c5ddb..1405b2d 100644
--- a/ld/testsuite/ld-mips-elf/reloc-local-overflow.d
+++ b/ld/testsuite/ld-mips-elf/reloc-local-overflow.d
@@ -1,6 +1,6 @@
#name: MIPS reloc against local symbol overflow
#source: reloc-local-overflow.s
-#ld: -Tdata 0x10000 -e 0
-#error: \A[^\n]*:\(\.data\+0x1000\): relocation truncated to fit: R_MIPS_16 against `\.data'\Z
+#ld: -Tdata 0x10000000 -e 0
+#error: \A[^\n]*:\(\.text\+0x0\): relocation truncated to fit: R_MIPS_26 against `\.data'\Z
# Verify that the section name (`.data') is printed rather than `no symbol'.
diff --git a/ld/testsuite/ld-mips-elf/reloc-local-overflow.s b/ld/testsuite/ld-mips-elf/reloc-local-overflow.s
index a07255c..6d50c7b 100644
--- a/ld/testsuite/ld-mips-elf/reloc-local-overflow.s
+++ b/ld/testsuite/ld-mips-elf/reloc-local-overflow.s
@@ -1,8 +1,5 @@
- .data
- .space 0x1000
+ .text
+ j init
- .align 2
- .type bar, @object
-bar:
- .half bar
- .size bar, . - bar
+ .data
+init: