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target/mips: Use an exception for semihosting

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Within do_interrupt, we hold the iothread lock, which
is required for Chardev access for the console, and for
the round trip for use_gdb_syscalls().

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2022-05-02 00:11:25 -07:00
parent a638af09b6
commit 8ec7e3c53d
10 changed files with 19 additions and 21 deletions
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2
target/mips/tcg/mips16e_translate.c.inc
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@ -952,7 +952,7 @@ static int decode_ase_mips16e(CPUMIPSState *env, DisasContext *ctx)
break;
case RR_SDBBP:
if (is_uhi(extract32(ctx->opcode, 5, 6))) {
gen_helper_do_semihosting(cpu_env);
generate_exception_end(ctx, EXCP_SEMIHOST);
} else {
/*
* XXX: not clear which exception should be raised