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target/i386: Unify invlpg, invlpga

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Use a single helper, flush_page, to do the work.
Use gen_svm_check_intercept.
Perform the zero-extension for invlpga inline.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210514151342.384376-43-richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-05-14 10:13:34 -05:00
parent 4ea2449b58
commit 35e5a5d5cb
4 changed files with 15 additions and 33 deletions
Download patch file Download diff file Expand all files Collapse all files

3
target/i386/helper.h
View file

@ -110,8 +110,7 @@ DEF_HELPER_2(vmload, void, env, int)
DEF_HELPER_2(vmsave, void, env, int) DEF_HELPER_2(vmsave, void, env, int)
DEF_HELPER_1(stgi, void, env) DEF_HELPER_1(stgi, void, env)
DEF_HELPER_1(clgi, void, env) DEF_HELPER_1(clgi, void, env)
DEF_HELPER_2(invlpga, void, env, int) DEF_HELPER_FLAGS_2(flush_page, TCG_CALL_NO_RWG, void, env, tl)
DEF_HELPER_2(invlpg, void, env, tl)
DEF_HELPER_FLAGS_2(hlt, TCG_CALL_NO_WG, noreturn, env, int) DEF_HELPER_FLAGS_2(hlt, TCG_CALL_NO_WG, noreturn, env, int)
DEF_HELPER_FLAGS_2(monitor, TCG_CALL_NO_WG, void, env, tl) DEF_HELPER_FLAGS_2(monitor, TCG_CALL_NO_WG, void, env, tl)
DEF_HELPER_FLAGS_2(mwait, TCG_CALL_NO_WG, noreturn, env, int) DEF_HELPER_FLAGS_2(mwait, TCG_CALL_NO_WG, noreturn, env, int)

7
target/i386/tcg/sysemu/misc_helper.c
View file

@ -439,12 +439,9 @@ void helper_rdmsr(CPUX86State *env)
env->regs[R_EDX] = (uint32_t)(val >> 32); env->regs[R_EDX] = (uint32_t)(val >> 32);
} }
void helper_invlpg(CPUX86State *env, target_ulong addr) void helper_flush_page(CPUX86State *env, target_ulong addr)
{ {
X86CPU *cpu = env_archcpu(env); tlb_flush_page(env_cpu(env), addr);
cpu_svm_check_intercept_param(env, SVM_EXIT_INVLPG, 0, GETPC());
tlb_flush_page(CPU(cpu), addr);
} }
static void QEMU_NORETURN do_hlt(CPUX86State *env) static void QEMU_NORETURN do_hlt(CPUX86State *env)

18
target/i386/tcg/sysemu/svm_helper.c
View file

@ -412,24 +412,6 @@ void helper_clgi(CPUX86State *env)
env->hflags2 &= ~HF2_GIF_MASK; env->hflags2 &= ~HF2_GIF_MASK;
} }
void helper_invlpga(CPUX86State *env, int aflag)
{
X86CPU *cpu = env_archcpu(env);
target_ulong addr;
cpu_svm_check_intercept_param(env, SVM_EXIT_INVLPGA, 0, GETPC());
if (aflag == 2) {
addr = env->regs[R_EAX];
} else {
addr = (uint32_t)env->regs[R_EAX];
}
/* XXX: could use the ASID to see if it is needed to do the
flush */
tlb_flush_page(CPU(cpu), addr);
}
void cpu_svm_check_intercept_param(CPUX86State *env, uint32_t type, void cpu_svm_check_intercept_param(CPUX86State *env, uint32_t type,
uint64_t param, uintptr_t retaddr) uint64_t param, uintptr_t retaddr)
{ {

20
target/i386/tcg/translate.c
View file

@ -194,9 +194,8 @@ typedef struct DisasContext {
#ifdef CONFIG_USER_ONLY #ifdef CONFIG_USER_ONLY
STUB_HELPER(clgi, TCGv_env env) STUB_HELPER(clgi, TCGv_env env)
STUB_HELPER(flush_page, TCGv_env env, TCGv addr)
STUB_HELPER(hlt, TCGv_env env, TCGv_i32 pc_ofs) STUB_HELPER(hlt, TCGv_env env, TCGv_i32 pc_ofs)
STUB_HELPER(invlpga, TCGv_env env, TCGv_i32 aflag)
STUB_HELPER(invlpg, TCGv_env env, TCGv addr)
STUB_HELPER(monitor, TCGv_env env, TCGv addr) STUB_HELPER(monitor, TCGv_env env, TCGv addr)
STUB_HELPER(mwait, TCGv_env env, TCGv_i32 pc_ofs) STUB_HELPER(mwait, TCGv_env env, TCGv_i32 pc_ofs)
STUB_HELPER(set_dr, TCGv_env env, TCGv_i32 reg, TCGv val) STUB_HELPER(set_dr, TCGv_env env, TCGv_i32 reg, TCGv val)
@ -7592,9 +7591,15 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
if (!check_cpl0(s)) { if (!check_cpl0(s)) {
break; break;
} }
gen_update_cc_op(s); gen_svm_check_intercept(s, SVM_EXIT_INVLPGA);
gen_jmp_im(s, pc_start - s->cs_base); if (s->aflag == MO_64) {
gen_helper_invlpga(cpu_env, tcg_const_i32(s->aflag - 1)); tcg_gen_mov_tl(s->A0, cpu_regs[R_EAX]);
} else {
tcg_gen_ext32u_tl(s->A0, cpu_regs[R_EAX]);
}
gen_helper_flush_page(cpu_env, s->A0);
gen_jmp_im(s, s->pc - s->cs_base);
gen_eob(s);
break; break;
CASE_MODRM_MEM_OP(2): /* lgdt */ CASE_MODRM_MEM_OP(2): /* lgdt */
@ -7682,10 +7687,9 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
if (!check_cpl0(s)) { if (!check_cpl0(s)) {
break; break;
} }
gen_update_cc_op(s); gen_svm_check_intercept(s, SVM_EXIT_INVLPG);
gen_jmp_im(s, pc_start - s->cs_base);
gen_lea_modrm(env, s, modrm); gen_lea_modrm(env, s, modrm);
gen_helper_invlpg(cpu_env, s->A0); gen_helper_flush_page(cpu_env, s->A0);
gen_jmp_im(s, s->pc - s->cs_base); gen_jmp_im(s, s->pc - s->cs_base);
gen_eob(s); gen_eob(s);
break; break;