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target/microblaze: Split out MSR[C] to its own variable

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Having the MSR[C] bit separate will improve arithmetic that operates
on the carry bit.  Having mb_cpu_read_msr() populate MSR[CC] will
prevent the carry copy not matching the carry bit.

Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2020-08-18 11:58:23 -07:00
parent 480d29a8fa
commit 1074c0fb91
6 changed files with 82 additions and 96 deletions
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2
linux-user/elfload.c
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@ -1039,7 +1039,7 @@ static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUMBState *env
}
(*regs)[pos++] = tswapreg(env->pc);
(*regs)[pos++] = tswapreg(env->msr);
(*regs)[pos++] = tswapreg(mb_cpu_read_msr(env));
(*regs)[pos++] = 0;
(*regs)[pos++] = tswapreg(env->ear);
(*regs)[pos++] = 0;