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target/i386: Remove user-only i/o stubs 

With the previous patch for check_io, we now have enough for
the compiler to dead-code eliminate all of the i/o helpers.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210514151342.384376-51-richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-05-14 10:13:42 -05:00
parent d76b9c6f07
commit 7fb7c42394
4 changed files with 7 additions and 58 deletions
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3
target/i386/helper.h
View File

@ -86,14 +86,13 @@ DEF_HELPER_1(rdtsc, void, env)
DEF_HELPER_1(rdtscp, void, env)
DEF_HELPER_FLAGS_1(rdpmc, TCG_CALL_NO_WG, noreturn, env)
#ifndef CONFIG_USER_ONLY
DEF_HELPER_3(outb, void, env, i32, i32)
DEF_HELPER_2(inb, tl, env, i32)
DEF_HELPER_3(outw, void, env, i32, i32)
DEF_HELPER_2(inw, tl, env, i32)
DEF_HELPER_3(outl, void, env, i32, i32)
DEF_HELPER_2(inl, tl, env, i32)
#ifndef CONFIG_USER_ONLY
DEF_HELPER_FLAGS_3(check_io, TCG_CALL_NO_WG, void, env, i32, i32)
DEF_HELPER_FLAGS_4(bpt_io, TCG_CALL_NO_WG, void, env, i32, i32, tl)
DEF_HELPER_2(svm_check_intercept, void, env, i32)

6
target/i386/tcg/translate.c
View File

@ -196,8 +196,14 @@ typedef struct DisasContext {
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(inb, TCGv ret, TCGv_env env, TCGv_i32 port)
STUB_HELPER(inw, TCGv ret, TCGv_env env, TCGv_i32 port)
STUB_HELPER(inl, TCGv ret, TCGv_env env, TCGv_i32 port)
STUB_HELPER(monitor, TCGv_env env, TCGv addr)
STUB_HELPER(mwait, TCGv_env env, TCGv_i32 pc_ofs)
STUB_HELPER(outb, TCGv_env env, TCGv_i32 port, TCGv_i32 val)
STUB_HELPER(outw, TCGv_env env, TCGv_i32 port, TCGv_i32 val)
STUB_HELPER(outl, TCGv_env env, TCGv_i32 port, TCGv_i32 val)
STUB_HELPER(rdmsr, TCGv_env env)
STUB_HELPER(read_crN, TCGv ret, TCGv_env env, TCGv_i32 reg)
STUB_HELPER(set_dr, TCGv_env env, TCGv_i32 reg, TCGv val)

1
target/i386/tcg/user/meson.build
View File

@ -1,5 +1,4 @@
i386_user_ss.add(when: ['CONFIG_TCG', 'CONFIG_USER_ONLY'], if_true: files(
'excp_helper.c',
'misc_stubs.c',
'seg_helper.c',
))

55
target/i386/tcg/user/misc_stubs.c
View File

@ -1,55 +0,0 @@
/*
* x86 misc helpers
*
* Copyright (c) 2003 Fabrice Bellard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "cpu.h"
#include "exec/helper-proto.h"
void helper_outb(CPUX86State *env, uint32_t port, uint32_t data)
{
g_assert_not_reached();
}
target_ulong helper_inb(CPUX86State *env, uint32_t port)
{
g_assert_not_reached();
return 0;
}
void helper_outw(CPUX86State *env, uint32_t port, uint32_t data)
{
g_assert_not_reached();
}
target_ulong helper_inw(CPUX86State *env, uint32_t port)
{
g_assert_not_reached();
return 0;
}
void helper_outl(CPUX86State *env, uint32_t port, uint32_t data)
{
g_assert_not_reached();
}
target_ulong helper_inl(CPUX86State *env, uint32_t port)
{
g_assert_not_reached();
return 0;
}