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make in/out accesses to hardware volatile

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This commit is contained in:
Markus Fröschle
2017-04-10 15:23:50 +00:00
parent 87952098b2
commit 30ac0da78e
1 changed files with 6 additions and 6 deletions
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12
BaS_gcc/x86emu/x86biosemu.c
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@@ -79,7 +79,7 @@ static uint8_t inb(struct X86EMU *emu, uint16_t port)
if ((port >= offset_port) && (port <= offset_port + 0xff)) if ((port >= offset_port) && (port <= offset_port + 0xff))
{ {
val = * (uint8_t *) (offset_io + (uint32_t) port); val = * (volatile uint8_t *) (offset_io + (uint32_t) port);
} }
else else
dbg("illegal port 0x%x\r\n", port); dbg("illegal port 0x%x\r\n", port);
@@ -93,7 +93,7 @@ static uint16_t inw(struct X86EMU *emu, uint16_t port)
if ((port >= offset_port) && (port <= offset_port + 0xFF)) if ((port >= offset_port) && (port <= offset_port + 0xFF))
{ {
val = swpw(*(uint16_t *)(offset_io + (uint32_t) port)); val = swpw(*(volatile uint16_t *)(offset_io + (uint32_t) port));
} }
else else
dbg("illegal port 0x%x\r\n", port); dbg("illegal port 0x%x\r\n", port);
@@ -110,7 +110,7 @@ static uint32_t inl(struct X86EMU *emu, uint16_t port)
if ((port >= offset_port) && (port <= offset_port + 0xFF)) if ((port >= offset_port) && (port <= offset_port + 0xFF))
{ {
val = swpl(*(uint32_t *)(offset_io + (uint32_t) port)); val = swpl(*(volatile uint32_t *)(offset_io + (uint32_t) port));
} }
else if (port == PC_PCI_INDEX_PORT) else if (port == PC_PCI_INDEX_PORT)
{ {
@@ -143,7 +143,7 @@ static void outb(struct X86EMU *emu, uint16_t port, uint8_t val)
{ {
if ((port >= offset_port) && (port <= offset_port + 0xFF)) if ((port >= offset_port) && (port <= offset_port + 0xFF))
{ {
*(uint8_t *)(offset_io + (uint32_t) port) = val; *(volatile uint8_t *)(offset_io + (uint32_t) port) = val;
} }
else else
dbg("illegal port 0x%x\r\n", port); dbg("illegal port 0x%x\r\n", port);
@@ -153,7 +153,7 @@ static void outw(struct X86EMU *emu, uint16_t port, uint16_t val)
{ {
if ((port >= offset_port) && (port <= offset_port + 0xFF)) if ((port >= offset_port) && (port <= offset_port + 0xFF))
{ {
*(uint16_t *)(offset_io + (uint32_t) port) = swpw(val); *(volatile uint16_t *)(offset_io + (uint32_t) port) = swpw(val);
} }
else else
dbg("illegal port 0x%x\r\n", port); dbg("illegal port 0x%x\r\n", port);
@@ -163,7 +163,7 @@ static void outl(struct X86EMU *emu, uint16_t port, uint32_t val)
{ {
if ((port >= offset_port) && (port <= offset_port + 0xFF)) if ((port >= offset_port) && (port <= offset_port + 0xFF))
{ {
*(uint32_t *)(offset_io + (uint32_t) port) = swpl(val); *(volatile uint32_t *)(offset_io + (uint32_t) port) = swpl(val);
} }
else if (port == PC_PCI_INDEX_PORT) else if (port == PC_PCI_INDEX_PORT)
{ {