# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1202741239 0
# Node ID 7e189fc27f4ffd0bfcb1727dbbf3b06a1a515705
# Parent a1b83b3b04491868d7e5aac594ed8ce0070d8c38
ioemu: save 3MB of ioport tables (on 64bit machines)
by keeping then initialized to NULL and check for it in the handlers.
Signed-off-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxxx>
---
tools/ioemu/vl.c | 60 ++++++++++++++++++++++++++++++++++++-------------------
1 files changed, 40 insertions(+), 20 deletions(-)
diff -r a1b83b3b0449 -r 7e189fc27f4f tools/ioemu/vl.c
--- a/tools/ioemu/vl.c Mon Feb 11 14:47:06 2008 +0000
+++ b/tools/ioemu/vl.c Mon Feb 11 14:47:19 2008 +0000
@@ -227,17 +227,29 @@ uint32_t default_ioport_readw(void *opaq
uint32_t default_ioport_readw(void *opaque, uint32_t address)
{
uint32_t data;
- data = ioport_read_table[0][address](ioport_opaque[address], address);
+ IOPortReadFunc *func = ioport_read_table[0][address];
+ if (!func)
+ func = default_ioport_readb;
+ data = func(ioport_opaque[address], address);
address = (address + 1) & (MAX_IOPORTS - 1);
- data |= ioport_read_table[0][address](ioport_opaque[address], address) <<
8;
+ func = ioport_read_table[0][address];
+ if (!func)
+ func = default_ioport_readb;
+ data |= func(ioport_opaque[address], address) << 8;
return data;
}
void default_ioport_writew(void *opaque, uint32_t address, uint32_t data)
{
- ioport_write_table[0][address](ioport_opaque[address], address, data &
0xff);
+ IOPortWriteFunc *func = ioport_write_table[0][address];
+ if (!func)
+ func = default_ioport_writeb;
+ func(ioport_opaque[address], address, data & 0xff);
address = (address + 1) & (MAX_IOPORTS - 1);
- ioport_write_table[0][address](ioport_opaque[address], address, (data >>
8) & 0xff);
+ func = ioport_write_table[0][address];
+ if (!func)
+ func = default_ioport_writeb;
+ func(ioport_opaque[address], address, (data >> 8) & 0xff);
}
uint32_t default_ioport_readl(void *opaque, uint32_t address)
@@ -257,16 +269,6 @@ void default_ioport_writel(void *opaque,
void init_ioports(void)
{
- int i;
-
- for(i = 0; i < MAX_IOPORTS; i++) {
- ioport_read_table[0][i] = default_ioport_readb;
- ioport_write_table[0][i] = default_ioport_writeb;
- ioport_read_table[1][i] = default_ioport_readw;
- ioport_write_table[1][i] = default_ioport_writew;
- ioport_read_table[2][i] = default_ioport_readl;
- ioport_write_table[2][i] = default_ioport_writel;
- }
}
/* size is the word size in byte */
@@ -338,11 +340,14 @@ void isa_unassign_ioport(int start, int
void cpu_outb(CPUState *env, int addr, int val)
{
+ IOPortWriteFunc *func = ioport_write_table[0][addr];
+ if (!func)
+ func = default_ioport_writeb;
#ifdef DEBUG_IOPORT
if (loglevel & CPU_LOG_IOPORT)
fprintf(logfile, "outb: %04x %02x\n", addr, val);
#endif
- ioport_write_table[0][addr](ioport_opaque[addr], addr, val);
+ func(ioport_opaque[addr], addr, val);
#ifdef USE_KQEMU
if (env)
env->last_io_time = cpu_get_time_fast();
@@ -351,11 +356,14 @@ void cpu_outb(CPUState *env, int addr, i
void cpu_outw(CPUState *env, int addr, int val)
{
+ IOPortWriteFunc *func = ioport_write_table[1][addr];
+ if (!func)
+ func = default_ioport_writew;
#ifdef DEBUG_IOPORT
if (loglevel & CPU_LOG_IOPORT)
fprintf(logfile, "outw: %04x %04x\n", addr, val);
#endif
- ioport_write_table[1][addr](ioport_opaque[addr], addr, val);
+ func(ioport_opaque[addr], addr, val);
#ifdef USE_KQEMU
if (env)
env->last_io_time = cpu_get_time_fast();
@@ -364,11 +372,14 @@ void cpu_outw(CPUState *env, int addr, i
void cpu_outl(CPUState *env, int addr, int val)
{
+ IOPortWriteFunc *func = ioport_write_table[2][addr];
+ if (!func)
+ func = default_ioport_writel;
#ifdef DEBUG_IOPORT
if (loglevel & CPU_LOG_IOPORT)
fprintf(logfile, "outl: %04x %08x\n", addr, val);
#endif
- ioport_write_table[2][addr](ioport_opaque[addr], addr, val);
+ func(ioport_opaque[addr], addr, val);
#ifdef USE_KQEMU
if (env)
env->last_io_time = cpu_get_time_fast();
@@ -378,7 +389,10 @@ int cpu_inb(CPUState *env, int addr)
int cpu_inb(CPUState *env, int addr)
{
int val;
- val = ioport_read_table[0][addr](ioport_opaque[addr], addr);
+ IOPortReadFunc *func = ioport_read_table[0][addr];
+ if (!func)
+ func = default_ioport_readb;
+ val = func(ioport_opaque[addr], addr);
#ifdef DEBUG_IOPORT
if (loglevel & CPU_LOG_IOPORT)
fprintf(logfile, "inb : %04x %02x\n", addr, val);
@@ -393,7 +407,10 @@ int cpu_inw(CPUState *env, int addr)
int cpu_inw(CPUState *env, int addr)
{
int val;
- val = ioport_read_table[1][addr](ioport_opaque[addr], addr);
+ IOPortReadFunc *func = ioport_read_table[1][addr];
+ if (!func)
+ func = default_ioport_readw;
+ val = func(ioport_opaque[addr], addr);
#ifdef DEBUG_IOPORT
if (loglevel & CPU_LOG_IOPORT)
fprintf(logfile, "inw : %04x %04x\n", addr, val);
@@ -408,7 +425,10 @@ int cpu_inl(CPUState *env, int addr)
int cpu_inl(CPUState *env, int addr)
{
int val;
- val = ioport_read_table[2][addr](ioport_opaque[addr], addr);
+ IOPortReadFunc *func = ioport_read_table[2][addr];
+ if (!func)
+ func = default_ioport_readl;
+ val = func(ioport_opaque[addr], addr);
#ifdef DEBUG_IOPORT
if (loglevel & CPU_LOG_IOPORT)
fprintf(logfile, "inl : %04x %08x\n", addr, val);
_______________________________________________
Xen-changelog mailing list
Xen-changelog@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-changelog
|
Home