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target/i386: Implement skinit in translate.c

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Our sysemu implementation is a stub.  We can already intercept
instructions for vmexit, and raising #UD is trivial.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210514151342.384376-33-richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-05-14 10:13:24 -05:00
parent b322b3afc1
commit e6aeb948bb
4 changed files with 3 additions and 16 deletions
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1
target/i386/helper.h
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@ -117,7 +117,6 @@ DEF_HELPER_2(vmload, void, env, int)
DEF_HELPER_2(vmsave, void, env, int)
DEF_HELPER_1(stgi, void, env)
DEF_HELPER_1(clgi, void, env)
DEF_HELPER_1(skinit, void, env)
DEF_HELPER_2(invlpga, void, env, int)
/* x86 FPU */

7
target/i386/tcg/sysemu/svm_helper.c
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@ -412,13 +412,6 @@ void helper_clgi(CPUX86State *env)
env->hflags2 &= ~HF2_GIF_MASK;
}
void helper_skinit(CPUX86State *env)
{
cpu_svm_check_intercept_param(env, SVM_EXIT_SKINIT, 0, GETPC());
/* XXX: not implemented */
raise_exception(env, EXCP06_ILLOP);
}
void helper_invlpga(CPUX86State *env, int aflag)
{
X86CPU *cpu = env_archcpu(env);

7
target/i386/tcg/translate.c
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@ -7578,10 +7578,9 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
|| !PE(s)) {
goto illegal_op;
}
gen_update_cc_op(s);
gen_jmp_im(s, pc_start - s->cs_base);
gen_helper_skinit(cpu_env);
break;
gen_svm_check_intercept(s, pc_start, SVM_EXIT_SKINIT);
/* If not intercepted, not implemented -- raise #UD. */
goto illegal_op;
case 0xdf: /* INVLPGA */
if (!SVME(s) || !PE(s)) {

4
target/i386/tcg/user/svm_stubs.c
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@ -46,10 +46,6 @@ void helper_clgi(CPUX86State *env)
{
}
void helper_skinit(CPUX86State *env)
{
}
void helper_invlpga(CPUX86State *env, int aflag)
{
}