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authorKito Cheng <kito.cheng@sifive.com>2022-06-28 21:52:19 +0800
committerPalmer Dabbelt <palmer@rivosinc.com>2022-06-30 08:04:52 -0700
commitc22d2021a9f9bdea62398976eea4f0e6ef668b7d (patch)
tree31c84de370e090ad007b11e4d679a5eff94ab717 /signal
parente9dd3682963a7038d699430e3ece68045b6caafc (diff)
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riscv: Use memcpy to handle unaligned access when fixing R_RISCV_RELATIVE
Although RISC-V Linux will enable the unaligned memory access handler by
default, that is quite expensive in general, using memcpy will be much cheaper
- just break down that into several load/store byte instructions.

ARM and MIPS has similar issue:

ARM: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51456
MIPS: https://gcc.gnu.org/legacy-ml/gcc-help/2005-07/msg00325.html

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
Diffstat (limited to 'signal')
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