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authorMaciej W. Rozycki <macro@imgtec.com>2016-12-19 11:32:05 +0000
committerMaciej W. Rozycki <macro@imgtec.com>2016-12-19 11:37:58 +0000
commit4df995c77118d07c12fb260dbba0ca2b281324f1 (patch)
treebde60dbb22bede024e98c63b65e818bf17b51bd4 /opcodes/mips-dis.c
parent602a81860a9a64c6a4bf1e338698118b35518b93 (diff)
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MIPS/opcodes: Only call `bfd_mips_elf_get_abiflags' if BFD64
Complement commit 5e7fc731f80e ("MIPS/opcodes: Also set disassembler's ASE flags from ELF structures") and fix an `--enable-targets=all' GDB build regression on 32-bit hosts where the MIPS target is a secondary: ../opcodes/libopcodes.a(mips-dis.o): In function `set_default_mips_dis_options': mips-dis.c:(.text+0x906): undefined reference to `bfd_mips_elf_get_abiflags' collect2: error: ld returned 1 exit status make[2]: *** [gdb] Error 1 by avoiding making a call to the `bfd_mips_elf_get_abiflags' function, which is not available, because there is no MIPS/ELF BFD included in 32-bit BFD builds. This call is only made from a conditional code block guarded by a check against `bfd_target_elf_flavour', which is dead in such a configuration, however cannot be optimized away by the compiler. Also some other MIPS BFDs may be available, such as a.out, ECOFF or PE, so the disassembler has to remain functional. opcodes/ * mips-dis.c (set_default_mips_dis_options) [BFD64]: Only call `bfd_mips_elf_get_abiflags' here.
Diffstat (limited to 'opcodes/mips-dis.c')
-rw-r--r--opcodes/mips-dis.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/opcodes/mips-dis.c b/opcodes/mips-dis.c
index c30bbd0..cd9893e 100644
--- a/opcodes/mips-dis.c
+++ b/opcodes/mips-dis.c
@@ -846,8 +846,15 @@ set_default_mips_dis_options (struct disassemble_info *info)
{
struct bfd *abfd = info->section->owner;
Elf_Internal_Ehdr *header = elf_elfheader (abfd);
- Elf_Internal_ABIFlags_v0 *abiflags = bfd_mips_elf_get_abiflags (abfd);
-
+ Elf_Internal_ABIFlags_v0 *abiflags = NULL;
+
+ /* We won't ever get here if !BFD64, because we won't then have
+ a MIPS/ELF BFD, however we need to guard against a link error
+ in a `--enable-targets=...' configuration with a 32-bit host,
+ where the MIPS target is a secondary. */
+#ifdef BFD64
+ abiflags = bfd_mips_elf_get_abiflags (abfd);
+#endif
/* If an ELF "newabi" binary, use the n32/(n)64 GPR names. */
if (is_newabi (header))
mips_gpr_names = mips_gpr_names_newabi;