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386_common: Optimize I/O permission checking for word and dword operations (based on qemu)

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This commit is contained in:
RichardG867
2023-04-22 18:41:42 -03:00
parent 041e916472
commit c076406450
7 changed files with 50 additions and 97 deletions
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40
src/cpu/x86_ops_io.h
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@@ -2,7 +2,7 @@ static int
opIN_AL_imm(uint32_t fetchdat)
{
uint16_t port = (uint16_t) getbytef();
check_io_perm(port);
check_io_perm(port, 1);
AL = inb(port);
CLOCK_CYCLES(12);
PREFETCH_RUN(12, 2, -1, 1, 0, 0, 0, 0);
@@ -14,8 +14,7 @@ static int
opIN_AX_imm(uint32_t fetchdat)
{
uint16_t port = (uint16_t) getbytef();
check_io_perm(port);
check_io_perm(port + 1);
check_io_perm(port, 2);
AX = inw(port);
CLOCK_CYCLES(12);
PREFETCH_RUN(12, 2, -1, 1, 0, 0, 0, 0);
@@ -27,10 +26,7 @@ static int
opIN_EAX_imm(uint32_t fetchdat)
{
uint16_t port = (uint16_t) getbytef();
check_io_perm(port);
check_io_perm(port + 1);
check_io_perm(port + 2);
check_io_perm(port + 3);
check_io_perm(port, 4);
EAX = inl(port);
CLOCK_CYCLES(12);
PREFETCH_RUN(12, 2, -1, 0, 1, 0, 0, 0);
@@ -43,7 +39,7 @@ static int
opOUT_AL_imm(uint32_t fetchdat)
{
uint16_t port = (uint16_t) getbytef();
check_io_perm(port);
check_io_perm(port, 1);
outb(port, AL);
CLOCK_CYCLES(10);
PREFETCH_RUN(10, 2, -1, 0, 0, 1, 0, 0);
@@ -57,8 +53,7 @@ static int
opOUT_AX_imm(uint32_t fetchdat)
{
uint16_t port = (uint16_t) getbytef();
check_io_perm(port);
check_io_perm(port + 1);
check_io_perm(port, 2);
outw(port, AX);
CLOCK_CYCLES(10);
PREFETCH_RUN(10, 2, -1, 0, 0, 1, 0, 0);
@@ -70,10 +65,7 @@ static int
opOUT_EAX_imm(uint32_t fetchdat)
{
uint16_t port = (uint16_t) getbytef();
check_io_perm(port);
check_io_perm(port + 1);
check_io_perm(port + 2);
check_io_perm(port + 3);
check_io_perm(port, 4);
outl(port, EAX);
CLOCK_CYCLES(10);
PREFETCH_RUN(10, 2, -1, 0, 0, 0, 1, 0);
@@ -85,7 +77,7 @@ opOUT_EAX_imm(uint32_t fetchdat)
static int
opIN_AL_DX(uint32_t fetchdat)
{
check_io_perm(DX);
check_io_perm(DX, 1);
AL = inb(DX);
CLOCK_CYCLES(12);
PREFETCH_RUN(12, 1, -1, 1, 0, 0, 0, 0);
@@ -96,8 +88,7 @@ opIN_AL_DX(uint32_t fetchdat)
static int
opIN_AX_DX(uint32_t fetchdat)
{
check_io_perm(DX);
check_io_perm(DX + 1);
check_io_perm(DX, 2);
AX = inw(DX);
CLOCK_CYCLES(12);
PREFETCH_RUN(12, 1, -1, 1, 0, 0, 0, 0);
@@ -108,10 +99,7 @@ opIN_AX_DX(uint32_t fetchdat)
static int
opIN_EAX_DX(uint32_t fetchdat)
{
check_io_perm(DX);
check_io_perm(DX + 1);
check_io_perm(DX + 2);
check_io_perm(DX + 3);
check_io_perm(DX, 4);
EAX = inl(DX);
CLOCK_CYCLES(12);
PREFETCH_RUN(12, 1, -1, 0, 1, 0, 0, 0);
@@ -123,7 +111,7 @@ opIN_EAX_DX(uint32_t fetchdat)
static int
opOUT_AL_DX(uint32_t fetchdat)
{
check_io_perm(DX);
check_io_perm(DX, 1);
outb(DX, AL);
CLOCK_CYCLES(11);
PREFETCH_RUN(11, 1, -1, 0, 0, 1, 0, 0);
@@ -134,8 +122,7 @@ opOUT_AL_DX(uint32_t fetchdat)
static int
opOUT_AX_DX(uint32_t fetchdat)
{
check_io_perm(DX);
check_io_perm(DX + 1);
check_io_perm(DX, 2);
outw(DX, AX);
CLOCK_CYCLES(11);
PREFETCH_RUN(11, 1, -1, 0, 0, 1, 0, 0);
@@ -146,10 +133,7 @@ opOUT_AX_DX(uint32_t fetchdat)
static int
opOUT_EAX_DX(uint32_t fetchdat)
{
check_io_perm(DX);
check_io_perm(DX + 1);
check_io_perm(DX + 2);
check_io_perm(DX + 3);
check_io_perm(DX, 4);
outl(DX, EAX);
PREFETCH_RUN(11, 1, -1, 0, 0, 0, 1, 0);
if (nmi && nmi_enable && nmi_mask)