motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-08 02:03:56 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

target-ppc: implement stxvl instruction

Browse source 
stxvl: Store VSX Vector with Length

Vector (8-bit elements) in BE:
+---+---+---+---+---+---+---+---+---+---+---+---+---+---+--+--+
|“T”|“h”|“i”|“s”|“ ”|“i”|“s”|“ ”|“a”|“ ”|“T”|“E”|“S”|“T”|00|00|
+---+---+---+---+---+---+---+---+---+---+---+---+---+---+--+--+

Vector (8-bit elements) in LE:
+--+--+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
|00|00|“T”|“S”|“E”|“T”|“ ”|“a”|“ ”|“s”|“i”|“ ”|“s”|“i”|"h"|"T"|
+--+--+---+---+---+---+---+---+---+---+---+---+---+---+---+---+

Storing 14 bytes would result in following Little/Big-endian Storage:
+---+---+---+---+---+---+---+---+---+---+---+---+---+---+--+--+
|“T”|“h”|“i”|“s”|“ ”|“i”|“s”|“ ”|“a”|“ ”|“T”|“E”|“S”|“T”|FF|FF|
+---+---+---+---+---+---+---+---+---+---+---+---+---+---+--+--+

Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Nikunj A Dadhania 2016-12-09 17:47:22 +05:30 • committed by David Gibson
parent 176e44e7eb
commit 681c247833
4 changed files with 34 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

29
target/ppc/mem_helper.c
View file

@ -317,6 +317,35 @@ void helper_##name(CPUPPCState *env, target_ulong addr, \
VSX_LXVL(lxvl, 0)
VSX_LXVL(lxvll, 1)
#undef VSX_LXVL
#define VSX_STXVL(name, lj) \
void helper_##name(CPUPPCState *env, target_ulong addr, \
target_ulong xt_num, target_ulong rb) \
{ \
int i; \
ppc_vsr_t xt; \
target_ulong nb = GET_NB(rb); \
\
if (!nb) { \
return; \
} \
getVSR(xt_num, &xt, env); \
nb = (nb >= 16) ? 16 : nb; \
if (msr_le && !lj) { \
for (i = 16; i > 16 - nb; i--) { \
cpu_stb_data_ra(env, addr, xt.VsrB(i - 1), GETPC()); \
addr = addr_add(env, addr, 1); \
} \
} else { \
for (i = 0; i < nb; i++) { \
cpu_stb_data_ra(env, addr, xt.VsrB(i), GETPC()); \
addr = addr_add(env, addr, 1); \
} \
} \
}
VSX_STXVL(stxvl, 0)
#undef VSX_STXVL
#undef GET_NB
#endif /* TARGET_PPC64 */