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qemu/target-mips/op_mem.c
ths 200ae688b2 TCGify the simplest FP instructions. 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4737 c046a42c-6fe2-441c-8c8c-71466251a162
2008-06-12 03:17:06 +00:00

270 lines
7.3 KiB
C
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/*
* MIPS emulation memory micro-operations for qemu.
*
* Copyright (c) 2004-2005 Jocelyn Mayer
*
* 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 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* "half" load and stores. We must do the memory access inline,
or fault handling won't work. */
#ifdef TARGET_WORDS_BIGENDIAN
#define GET_LMASK(v) ((v) & 3)
#define GET_OFFSET(addr, offset) (addr + (offset))
#else
#define GET_LMASK(v) (((v) & 3) ^ 3)
#define GET_OFFSET(addr, offset) (addr - (offset))
#endif
void glue(op_lwl, MEMSUFFIX) (void)
{
target_ulong tmp;
tmp = glue(ldub, MEMSUFFIX)(T0);
T1 = (T1 & 0x00FFFFFF) | (tmp << 24);
if (GET_LMASK(T0) <= 2) {
tmp = glue(ldub, MEMSUFFIX)(GET_OFFSET(T0, 1));
T1 = (T1 & 0xFF00FFFF) | (tmp << 16);
}
if (GET_LMASK(T0) <= 1) {
tmp = glue(ldub, MEMSUFFIX)(GET_OFFSET(T0, 2));
T1 = (T1 & 0xFFFF00FF) | (tmp << 8);
}
if (GET_LMASK(T0) == 0) {
tmp = glue(ldub, MEMSUFFIX)(GET_OFFSET(T0, 3));
T1 = (T1 & 0xFFFFFF00) | tmp;
}
T1 = (int32_t)T1;
FORCE_RET();
}
void glue(op_lwr, MEMSUFFIX) (void)
{
target_ulong tmp;
tmp = glue(ldub, MEMSUFFIX)(T0);
T1 = (T1 & 0xFFFFFF00) | tmp;
if (GET_LMASK(T0) >= 1) {
tmp = glue(ldub, MEMSUFFIX)(GET_OFFSET(T0, -1));
T1 = (T1 & 0xFFFF00FF) | (tmp << 8);
}
if (GET_LMASK(T0) >= 2) {
tmp = glue(ldub, MEMSUFFIX)(GET_OFFSET(T0, -2));
T1 = (T1 & 0xFF00FFFF) | (tmp << 16);
}
if (GET_LMASK(T0) == 3) {
tmp = glue(ldub, MEMSUFFIX)(GET_OFFSET(T0, -3));
T1 = (T1 & 0x00FFFFFF) | (tmp << 24);
}
T1 = (int32_t)T1;
FORCE_RET();
}
void glue(op_swl, MEMSUFFIX) (void)
{
glue(stb, MEMSUFFIX)(T0, (uint8_t)(T1 >> 24));
if (GET_LMASK(T0) <= 2)
glue(stb, MEMSUFFIX)(GET_OFFSET(T0, 1), (uint8_t)(T1 >> 16));
if (GET_LMASK(T0) <= 1)
glue(stb, MEMSUFFIX)(GET_OFFSET(T0, 2), (uint8_t)(T1 >> 8));
if (GET_LMASK(T0) == 0)
glue(stb, MEMSUFFIX)(GET_OFFSET(T0, 3), (uint8_t)T1);
FORCE_RET();
}
void glue(op_swr, MEMSUFFIX) (void)
{
glue(stb, MEMSUFFIX)(T0, (uint8_t)T1);
if (GET_LMASK(T0) >= 1)
glue(stb, MEMSUFFIX)(GET_OFFSET(T0, -1), (uint8_t)(T1 >> 8));
if (GET_LMASK(T0) >= 2)
glue(stb, MEMSUFFIX)(GET_OFFSET(T0, -2), (uint8_t)(T1 >> 16));
if (GET_LMASK(T0) == 3)
glue(stb, MEMSUFFIX)(GET_OFFSET(T0, -3), (uint8_t)(T1 >> 24));
FORCE_RET();
}
#if defined(TARGET_MIPS64)
/* "half" load and stores. We must do the memory access inline,
or fault handling won't work. */
#ifdef TARGET_WORDS_BIGENDIAN
#define GET_LMASK64(v) ((v) & 7)
#else
#define GET_LMASK64(v) (((v) & 7) ^ 7)
#endif
void glue(op_ldl, MEMSUFFIX) (void)
{
uint64_t tmp;
tmp = glue(ldub, MEMSUFFIX)(T0);
T1 = (T1 & 0x00FFFFFFFFFFFFFFULL) | (tmp << 56);
if (GET_LMASK64(T0) <= 6) {
tmp = glue(ldub, MEMSUFFIX)(GET_OFFSET(T0, 1));
T1 = (T1 & 0xFF00FFFFFFFFFFFFULL) | (tmp << 48);
}
if (GET_LMASK64(T0) <= 5) {
tmp = glue(ldub, MEMSUFFIX)(GET_OFFSET(T0, 2));
T1 = (T1 & 0xFFFF00FFFFFFFFFFULL) | (tmp << 40);
}
if (GET_LMASK64(T0) <= 4) {
tmp = glue(ldub, MEMSUFFIX)(GET_OFFSET(T0, 3));
T1 = (T1 & 0xFFFFFF00FFFFFFFFULL) | (tmp << 32);
}
if (GET_LMASK64(T0) <= 3) {
tmp = glue(ldub, MEMSUFFIX)(GET_OFFSET(T0, 4));
T1 = (T1 & 0xFFFFFFFF00FFFFFFULL) | (tmp << 24);
}
if (GET_LMASK64(T0) <= 2) {
tmp = glue(ldub, MEMSUFFIX)(GET_OFFSET(T0, 5));
T1 = (T1 & 0xFFFFFFFFFF00FFFFULL) | (tmp << 16);
}
if (GET_LMASK64(T0) <= 1) {
tmp = glue(ldub, MEMSUFFIX)(GET_OFFSET(T0, 6));
T1 = (T1 & 0xFFFFFFFFFFFF00FFULL) | (tmp << 8);
}
if (GET_LMASK64(T0) == 0) {
tmp = glue(ldub, MEMSUFFIX)(GET_OFFSET(T0, 7));
T1 = (T1 & 0xFFFFFFFFFFFFFF00ULL) | tmp;
}
FORCE_RET();
}
void glue(op_ldr, MEMSUFFIX) (void)
{
uint64_t tmp;
tmp = glue(ldub, MEMSUFFIX)(T0);
T1 = (T1 & 0xFFFFFFFFFFFFFF00ULL) | tmp;
if (GET_LMASK64(T0) >= 1) {
tmp = glue(ldub, MEMSUFFIX)(GET_OFFSET(T0, -1));
T1 = (T1 & 0xFFFFFFFFFFFF00FFULL) | (tmp << 8);
}
if (GET_LMASK64(T0) >= 2) {
tmp = glue(ldub, MEMSUFFIX)(GET_OFFSET(T0, -2));
T1 = (T1 & 0xFFFFFFFFFF00FFFFULL) | (tmp << 16);
}
if (GET_LMASK64(T0) >= 3) {
tmp = glue(ldub, MEMSUFFIX)(GET_OFFSET(T0, -3));
T1 = (T1 & 0xFFFFFFFF00FFFFFFULL) | (tmp << 24);
}
if (GET_LMASK64(T0) >= 4) {
tmp = glue(ldub, MEMSUFFIX)(GET_OFFSET(T0, -4));
T1 = (T1 & 0xFFFFFF00FFFFFFFFULL) | (tmp << 32);
}
if (GET_LMASK64(T0) >= 5) {
tmp = glue(ldub, MEMSUFFIX)(GET_OFFSET(T0, -5));
T1 = (T1 & 0xFFFF00FFFFFFFFFFULL) | (tmp << 40);
}
if (GET_LMASK64(T0) >= 6) {
tmp = glue(ldub, MEMSUFFIX)(GET_OFFSET(T0, -6));
T1 = (T1 & 0xFF00FFFFFFFFFFFFULL) | (tmp << 48);
}
if (GET_LMASK64(T0) == 7) {
tmp = glue(ldub, MEMSUFFIX)(GET_OFFSET(T0, -7));
T1 = (T1 & 0x00FFFFFFFFFFFFFFULL) | (tmp << 56);
}
FORCE_RET();
}
void glue(op_sdl, MEMSUFFIX) (void)
{
glue(stb, MEMSUFFIX)(T0, (uint8_t)(T1 >> 56));
if (GET_LMASK64(T0) <= 6)
glue(stb, MEMSUFFIX)(GET_OFFSET(T0, 1), (uint8_t)(T1 >> 48));
if (GET_LMASK64(T0) <= 5)
glue(stb, MEMSUFFIX)(GET_OFFSET(T0, 2), (uint8_t)(T1 >> 40));
if (GET_LMASK64(T0) <= 4)
glue(stb, MEMSUFFIX)(GET_OFFSET(T0, 3), (uint8_t)(T1 >> 32));
if (GET_LMASK64(T0) <= 3)
glue(stb, MEMSUFFIX)(GET_OFFSET(T0, 4), (uint8_t)(T1 >> 24));
if (GET_LMASK64(T0) <= 2)
glue(stb, MEMSUFFIX)(GET_OFFSET(T0, 5), (uint8_t)(T1 >> 16));
if (GET_LMASK64(T0) <= 1)
glue(stb, MEMSUFFIX)(GET_OFFSET(T0, 6), (uint8_t)(T1 >> 8));
if (GET_LMASK64(T0) <= 0)
glue(stb, MEMSUFFIX)(GET_OFFSET(T0, 7), (uint8_t)T1);
FORCE_RET();
}
void glue(op_sdr, MEMSUFFIX) (void)
{
glue(stb, MEMSUFFIX)(T0, (uint8_t)T1);
if (GET_LMASK64(T0) >= 1)
glue(stb, MEMSUFFIX)(GET_OFFSET(T0, -1), (uint8_t)(T1 >> 8));
if (GET_LMASK64(T0) >= 2)
glue(stb, MEMSUFFIX)(GET_OFFSET(T0, -2), (uint8_t)(T1 >> 16));
if (GET_LMASK64(T0) >= 3)
glue(stb, MEMSUFFIX)(GET_OFFSET(T0, -3), (uint8_t)(T1 >> 24));
if (GET_LMASK64(T0) >= 4)
glue(stb, MEMSUFFIX)(GET_OFFSET(T0, -4), (uint8_t)(T1 >> 32));
if (GET_LMASK64(T0) >= 5)
glue(stb, MEMSUFFIX)(GET_OFFSET(T0, -5), (uint8_t)(T1 >> 40));
if (GET_LMASK64(T0) >= 6)
glue(stb, MEMSUFFIX)(GET_OFFSET(T0, -6), (uint8_t)(T1 >> 48));
if (GET_LMASK64(T0) == 7)
glue(stb, MEMSUFFIX)(GET_OFFSET(T0, -7), (uint8_t)(T1 >> 56));
FORCE_RET();
}
#endif /* TARGET_MIPS64 */
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