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linux-user: Use cpu_untagged_addr in access_ok; split out *_untagged

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Provide both tagged and untagged versions of access_ok.
In a few places use thread_cpu, as the user is several
callees removed from do_syscall1.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210212184902.1251044-17-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2021-02-12 10:48:47 -08:00 • committed by Peter Maydell
parent 46b12f461c
commit c7169b022b
6 changed files with 24 additions and 13 deletions
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5
linux-user/i386/signal.c
View file

@ -513,9 +513,10 @@ restore_sigcontext(CPUX86State *env, struct target_sigcontext *sc)
fpstate_addr = tswapl(sc->fpstate);
if (fpstate_addr != 0) {
if (!access_ok(VERIFY_READ, fpstate_addr,
sizeof(struct target_fpstate)))
if (!access_ok(env_cpu(env), VERIFY_READ, fpstate_addr,
sizeof(struct target_fpstate))) {
goto badframe;
}
#ifndef TARGET_X86_64
cpu_x86_frstor(env, fpstate_addr, 1);
#else