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| author | Palmer Dabbelt <palmer@dabbelt.com> | 2017-10-06 12:06:45 -0700 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@dabbelt.com> | 2017-10-23 18:26:29 -0700 |
| commit | 2c3f27ed0d6a91bc0812bb2fc6965fd03a413fee (patch) | |
| tree | ca1d3cfd10a99c0bebe31f943f4ec3ee483f24d2 /gas | |
| parent | fee0ea1f2d3079f7fc3d48109c2a81cc7b7f241c (diff) | |
| download | gdb-2c3f27ed0d6a91bc0812bb2fc6965fd03a413fee.zip gdb-2c3f27ed0d6a91bc0812bb2fc6965fd03a413fee.tar.gz gdb-2c3f27ed0d6a91bc0812bb2fc6965fd03a413fee.tar.bz2 | |
RISC-V: Don't emit 2-byte NOPs if the C extension is disabled
Systems without the C extension mandate 4-byte alignment for
instructions, so there is no reason to allow for 2-byte alignment. This
change avoids emitting lots of unimplemented instructions into object
files on non-C targets, which users keep reporting as a bug. While this
isn't actually a bug (as none of the offsets in object files are
relevant until RISC-V), it is ugly.
gas/ChangeLog
2017-10-23 Palmer Dabbelt <palmer@dabbelt.com>
* config/tc-riscv.c (riscv_frag_align_code): Align code by 4
bytes on non-RVC systems.
Diffstat (limited to 'gas')
| -rw-r--r-- | gas/ChangeLog | 5 | ||||
| -rw-r--r-- | gas/config/tc-riscv.c | 2 |
2 files changed, 6 insertions, 1 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index f095421..bb1aa01 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,8 @@ +2017-10-23 Palmer Dabbelt <palmer@dabbelt.com> + + * config/tc-riscv.c (riscv_frag_align_code): Align code by 4 + bytes on non-RVC systems. + 2017-10-23 Maciej W. Rozycki <macro@imgtec.com> * config/tc-mips.c (mips_elf_final_processing): Don't set diff --git a/gas/config/tc-riscv.c b/gas/config/tc-riscv.c index 189e40d..f4276c9 100644 --- a/gas/config/tc-riscv.c +++ b/gas/config/tc-riscv.c @@ -2277,7 +2277,7 @@ bfd_boolean riscv_frag_align_code (int n) { bfd_vma bytes = (bfd_vma) 1 << n; - bfd_vma worst_case_bytes = bytes - 2; + bfd_vma worst_case_bytes = bytes - (riscv_opts.rvc ? 2 : 4); char *nops = frag_more (worst_case_bytes); expressionS ex; |