qemu/target-ppc/op_helper_mem.h
bellard 111bfab3b5 This patch adds little-endian mode support to PPC emulation.
This is needed by OS/2 and Windows NT and some programs like VirtualPC.
This patch has been tested using OS/2 bootloader (thanks to Tero
Kaarlela).
(Jocelyn Mayer)


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1379 c046a42c-6fe2-441c-8c8c-71466251a162
2005-04-23 18:16:07 +00:00

93 lines
2.3 KiB
C

void glue(do_lsw, MEMSUFFIX) (int dst)
{
uint32_t tmp;
int sh;
if (loglevel > 0) {
fprintf(logfile, "%s: addr=0x%08x count=%d reg=%d\n",
__func__, T0, T1, dst);
}
for (; T1 > 3; T1 -= 4, T0 += 4) {
ugpr(dst++) = glue(ldl, MEMSUFFIX)(T0);
if (dst == 32)
dst = 0;
}
if (T1 > 0) {
tmp = 0;
for (sh = 24; T1 > 0; T1--, T0++, sh -= 8) {
tmp |= glue(ldub, MEMSUFFIX)(T0) << sh;
}
ugpr(dst) = tmp;
}
}
void glue(do_stsw, MEMSUFFIX) (int src)
{
int sh;
if (loglevel > 0) {
fprintf(logfile, "%s: addr=0x%08x count=%d reg=%d\n",
__func__, T0, T1, src);
}
for (; T1 > 3; T1 -= 4, T0 += 4) {
glue(stl, MEMSUFFIX)(T0, ugpr(src++));
if (src == 32)
src = 0;
}
if (T1 > 0) {
for (sh = 24; T1 > 0; T1--, T0++, sh -= 8)
glue(stb, MEMSUFFIX)(T0, (ugpr(src) >> sh) & 0xFF);
}
}
void glue(do_lsw_le, MEMSUFFIX) (int dst)
{
uint32_t tmp;
int sh;
if (loglevel > 0) {
fprintf(logfile, "%s: addr=0x%08x count=%d reg=%d\n",
__func__, T0, T1, dst);
}
for (; T1 > 3; T1 -= 4, T0 += 4) {
tmp = glue(ldl, MEMSUFFIX)(T0);
ugpr(dst++) = ((tmp & 0xFF000000) >> 24) | ((tmp & 0x00FF0000) >> 8) |
((tmp & 0x0000FF00) << 8) | ((tmp & 0x000000FF) << 24);
if (dst == 32)
dst = 0;
}
if (T1 > 0) {
tmp = 0;
for (sh = 0; T1 > 0; T1--, T0++, sh += 8) {
tmp |= glue(ldub, MEMSUFFIX)(T0) << sh;
}
ugpr(dst) = tmp;
}
}
void glue(do_stsw_le, MEMSUFFIX) (int src)
{
uint32_t tmp;
int sh;
if (loglevel > 0) {
fprintf(logfile, "%s: addr=0x%08x count=%d reg=%d\n",
__func__, T0, T1, src);
}
for (; T1 > 3; T1 -= 4, T0 += 4) {
tmp = ((ugpr(src++) & 0xFF000000) >> 24);
tmp |= ((ugpr(src++) & 0x00FF0000) >> 8);
tmp |= ((ugpr(src++) & 0x0000FF00) << 8);
tmp |= ((ugpr(src++) & 0x000000FF) << 24);
glue(stl, MEMSUFFIX)(T0, tmp);
if (src == 32)
src = 0;
}
if (T1 > 0) {
for (sh = 0; T1 > 0; T1--, T0++, sh += 8)
glue(stb, MEMSUFFIX)(T0, (ugpr(src) >> sh) & 0xFF);
}
}
#undef MEMSUFFIX