motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-12-11 16:00:50 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions

ARM TCG conversion 14/16.

Browse source 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4151 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2008-03-31 03:48:30 +00:00
parent 8f8e3aa451
commit ad69471ce5
8 changed files with 2599 additions and 2540 deletions
Download patch file Download diff file Expand all files Collapse all files

117
target-arm/op_helper.c
View file

@ -20,6 +20,9 @@
#include "exec.h"
#include "helpers.h"
#define SIGNBIT (uint32_t)0x80000000
#define SIGNBIT64 ((uint64_t)1 << 63)
void raise_exception(int tt)
{
env->exception_index = tt;
@ -116,7 +119,8 @@ void tlb_fill (target_ulong addr, int is_write, int mmu_idx, void *retaddr)
}
#endif
#define SIGNBIT (uint32_t)0x80000000
/* FIXME: Pass an axplicit pointer to QF to CPUState, and move saturating
instructions into helper.c */
uint32_t HELPER(add_setq)(uint32_t a, uint32_t b)
{
uint32_t res = a + b;
@ -451,3 +455,114 @@ uint32_t HELPER(ror_cc)(uint32_t x, uint32_t i)
}
}
uint64_t HELPER(neon_add_saturate_s64)(uint64_t src1, uint64_t src2)
{
uint64_t res;
res = src1 + src2;
if (((res ^ src1) & SIGNBIT64) && !((src1 ^ src2) & SIGNBIT64)) {
env->QF = 1;
res = ((int64_t)src1 >> 63) ^ ~SIGNBIT64;
}
return res;
}
uint64_t HELPER(neon_add_saturate_u64)(uint64_t src1, uint64_t src2)
{
uint64_t res;
res = src1 + src2;
if (res < src1) {
env->QF = 1;
res = ~(uint64_t)0;
}
return res;
}
uint64_t HELPER(neon_sub_saturate_s64)(uint64_t src1, uint64_t src2)
{
uint64_t res;
res = src1 - src2;
if (((res ^ src1) & SIGNBIT64) && ((src1 ^ src2) & SIGNBIT64)) {
env->QF = 1;
res = ((int64_t)src1 >> 63) ^ ~SIGNBIT64;
}
return res;
}
uint64_t HELPER(neon_sub_saturate_u64)(uint64_t src1, uint64_t src2)
{
uint64_t res;
if (src1 < src2) {
env->QF = 1;
res = 0;
} else {
res = src1 - src2;
}
return res;
}
/* These need to return a pair of value, so still use T0/T1. */
/* Transpose. Argument order is rather strange to avoid special casing
the tranlation code.
On input T0 = rm, T1 = rd. On output T0 = rd, T1 = rm */
void HELPER(neon_trn_u8)(void)
{
uint32_t rd;
uint32_t rm;
rd = ((T0 & 0x00ff00ff) << 8) | (T1 & 0x00ff00ff);
rm = ((T1 & 0xff00ff00) >> 8) | (T0 & 0xff00ff00);
T0 = rd;
T1 = rm;
FORCE_RET();
}
void HELPER(neon_trn_u16)(void)
{
uint32_t rd;
uint32_t rm;
rd = (T0 << 16) | (T1 & 0xffff);
rm = (T1 >> 16) | (T0 & 0xffff0000);
T0 = rd;
T1 = rm;
FORCE_RET();
}
/* Worker routines for zip and unzip. */
void HELPER(neon_unzip_u8)(void)
{
uint32_t rd;
uint32_t rm;
rd = (T0 & 0xff) | ((T0 >> 8) & 0xff00)
| ((T1 << 16) & 0xff0000) | ((T1 << 8) & 0xff000000);
rm = ((T0 >> 8) & 0xff) | ((T0 >> 16) & 0xff00)
| ((T1 << 8) & 0xff0000) | (T1 & 0xff000000);
T0 = rd;
T1 = rm;
FORCE_RET();
}
void HELPER(neon_zip_u8)(void)
{
uint32_t rd;
uint32_t rm;
rd = (T0 & 0xff) | ((T1 << 8) & 0xff00)
| ((T0 << 16) & 0xff0000) | ((T1 << 24) & 0xff000000);
rm = ((T0 >> 16) & 0xff) | ((T1 >> 8) & 0xff00)
| ((T0 >> 8) & 0xff0000) | (T1 & 0xff000000);
T0 = rd;
T1 = rm;
FORCE_RET();
}
void HELPER(neon_zip_u16)(void)
{
uint32_t tmp;
tmp = (T0 & 0xffff) | (T1 << 16);
T1 = (T1 & 0xffff0000) | (T0 >> 16);
T0 = tmp;
FORCE_RET();
}