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target-ppc: implement lxvl instruction 

lxvl: Load VSX Vector with Length

Little/Big-endian Storage:
+---+---+---+---+---+---+---+---+---+---+---+---+---+---+--+--+
|“T”|“h”|“i”|“s”|“ ”|“i”|“s”|“ ”|“a”|“ ”|“T”|“E”|“S”|“T”|FF|FF|
+---+---+---+---+---+---+---+---+---+---+---+---+---+---+--+--+

Loading 14 bytes results in:

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"|
+--+--+---+---+---+---+---+---+---+---+---+---+---+---+---+---+

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 17:47:20 +05:30 committed by David Gibson
parent 234068abfb
commit 6914bc4fb5
4 changed files with 70 additions and 0 deletions
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3
target/ppc/helper.h
View File

@ -312,6 +312,9 @@ DEF_HELPER_3(lvewx, void, env, avr, tl)
DEF_HELPER_3(stvebx, void, env, avr, tl)
DEF_HELPER_3(stvehx, void, env, avr, tl)
DEF_HELPER_3(stvewx, void, env, avr, tl)
#if defined(TARGET_PPC64)
DEF_HELPER_4(lxvl, void, env, tl, tl, tl)
#endif
DEF_HELPER_4(vsumsws, void, env, avr, avr, avr)
DEF_HELPER_4(vsum2sws, void, env, avr, avr, avr)
DEF_HELPER_4(vsum4sbs, void, env, avr, avr, avr)

35
target/ppc/mem_helper.c
View File

@ -24,6 +24,7 @@
#include "helper_regs.h"
#include "exec/cpu_ldst.h"
#include "internal.h"
//#define DEBUG_OP
@ -284,6 +285,40 @@ STVE(stvewx, cpu_stl_data_ra, bswap32, u32)
#undef I
#undef LVE
#ifdef TARGET_PPC64
#define GET_NB(rb) ((rb >> 56) & 0xFF)
#define VSX_LXVL(name, lj) \
void helper_##name(CPUPPCState *env, target_ulong addr, \
target_ulong xt_num, target_ulong rb) \
{ \
int i; \
ppc_vsr_t xt; \
uint64_t nb = GET_NB(rb); \
\
xt.s128 = int128_zero(); \
if (nb) { \
nb = (nb >= 16) ? 16 : nb; \
if (msr_le && !lj) { \
for (i = 16; i > 16 - nb; i--) { \
xt.VsrB(i - 1) = cpu_ldub_data_ra(env, addr, GETPC()); \
addr = addr_add(env, addr, 1); \
} \
} else { \
for (i = 0; i < nb; i++) { \
xt.VsrB(i) = cpu_ldub_data_ra(env, addr, GETPC()); \
addr = addr_add(env, addr, 1); \
} \
} \
} \
putVSR(xt_num, &xt, env); \
}
VSX_LXVL(lxvl, 0)
#undef VSX_LXVL
#undef GET_NB
#endif /* TARGET_PPC64 */
#undef HI_IDX
#undef LO_IDX

29
target/ppc/translate/vsx-impl.inc.c
View File

@ -240,6 +240,35 @@ VSX_VECTOR_LOAD_STORE(stxv, st_i64, 0)
VSX_VECTOR_LOAD_STORE(lxvx, ld_i64, 1)
VSX_VECTOR_LOAD_STORE(stxvx, st_i64, 1)
#ifdef TARGET_PPC64
#define VSX_VECTOR_LOAD_STORE_LENGTH(name) \
static void gen_##name(DisasContext *ctx) \
{ \
TCGv EA, xt; \
\
if (xT(ctx->opcode) < 32) { \
if (unlikely(!ctx->vsx_enabled)) { \
gen_exception(ctx, POWERPC_EXCP_VSXU); \
return; \
} \
} else { \
if (unlikely(!ctx->altivec_enabled)) { \
gen_exception(ctx, POWERPC_EXCP_VPU); \
return; \
} \
} \
EA = tcg_temp_new(); \
xt = tcg_const_tl(xT(ctx->opcode)); \
gen_set_access_type(ctx, ACCESS_INT); \
gen_addr_register(ctx, EA); \
gen_helper_##name(cpu_env, EA, xt, cpu_gpr[rB(ctx->opcode)]); \
tcg_temp_free(EA); \
tcg_temp_free(xt); \
}
VSX_VECTOR_LOAD_STORE_LENGTH(lxvl)
#endif
#define VSX_LOAD_SCALAR_DS(name, operation) \
static void gen_##name(DisasContext *ctx) \
{ \

3
target/ppc/translate/vsx-ops.inc.c
View File

@ -10,6 +10,9 @@ GEN_HANDLER_E(lxvw4x, 0x1F, 0x0C, 0x18, 0, PPC_NONE, PPC2_VSX),
GEN_HANDLER_E(lxvh8x, 0x1F, 0x0C, 0x19, 0, PPC_NONE, PPC2_ISA300),
GEN_HANDLER_E(lxvb16x, 0x1F, 0x0C, 0x1B, 0, PPC_NONE, PPC2_ISA300),
GEN_HANDLER_E(lxvx, 0x1F, 0x0C, 0x08, 0x00000040, PPC_NONE, PPC2_ISA300),
#if defined(TARGET_PPC64)
GEN_HANDLER_E(lxvl, 0x1F, 0x0D, 0x08, 0, PPC_NONE, PPC2_ISA300),
#endif
GEN_HANDLER_E(stxsdx, 0x1F, 0xC, 0x16, 0, PPC_NONE, PPC2_VSX),
GEN_HANDLER_E(stxsibx, 0x1F, 0xD, 0x1C, 0, PPC_NONE, PPC2_ISA300),