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target/arm: Implement v8.3-RCPC

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The v8.3-RCPC extension implements three new load instructions
which provide slightly weaker consistency guarantees than the
existing load-acquire operations. For QEMU we choose to simply
implement them with a full LDAQ barrier.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200224172846.13053-3-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2020-02-24 17:28:45 +00:00
parent 54117b90ff
commit 2677cf9f92
4 changed files with 31 additions and 0 deletions
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linux-user/elfload.c
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@ -661,6 +661,7 @@ static uint32_t get_elf_hwcap(void)
GET_FEATURE_ID(aa64_sb, ARM_HWCAP_A64_SB);
GET_FEATURE_ID(aa64_condm_4, ARM_HWCAP_A64_FLAGM);
GET_FEATURE_ID(aa64_dcpop, ARM_HWCAP_A64_DCPOP);
GET_FEATURE_ID(aa64_rcpc_8_3, ARM_HWCAP_A64_LRCPC);
return hwcaps;
}