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target-ppc: implement lxsd and lxssp instructions

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lxsd: Load VSX Scalar Dword
lxssp: Load VSX Scalar Single

Moreover, DS-Form instructions shares the same primary opcode, bits
30:31 are used to decode the instruction. Use a common routine to decode
primary opcode(0x39) - ds-form instructions and branch-out depending on
bits 30:31.

Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Nikunj A Dadhania 2016-11-23 17:07:15 +05:30 committed by David Gibson
parent be0a4faf35
commit 5cb091a4fd
3 changed files with 46 additions and 1 deletions
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25
target/ppc/translate.c
View File

@ -6072,6 +6072,29 @@ GEN_TM_PRIV_NOOP(trechkpt);
#include "translate/spe-impl.inc.c"
/* Handles lfdp, lxsd, lxssp */
static void gen_dform39(DisasContext *ctx)
{
switch (ctx->opcode & 0x3) {
case 0: /* lfdp */
if (ctx->insns_flags2 & PPC2_ISA205) {
return gen_lfdp(ctx);
}
break;
case 2: /* lxsd */
if (ctx->insns_flags2 & PPC2_ISA300) {
return gen_lxsd(ctx);
}
break;
case 3: /* lxssp */
if (ctx->insns_flags2 & PPC2_ISA300) {
return gen_lxssp(ctx);
}
break;
}
return gen_invalid(ctx);
}
static opcode_t opcodes[] = {
GEN_HANDLER(invalid, 0x00, 0x00, 0x00, 0xFFFFFFFF, PPC_NONE),
GEN_HANDLER(cmp, 0x1F, 0x00, 0x00, 0x00400000, PPC_INTEGER),
@ -6144,6 +6167,8 @@ GEN_HANDLER(ld, 0x3A, 0xFF, 0xFF, 0x00000000, PPC_64B),
GEN_HANDLER(lq, 0x38, 0xFF, 0xFF, 0x00000000, PPC_64BX),
GEN_HANDLER(std, 0x3E, 0xFF, 0xFF, 0x00000000, PPC_64B),
#endif
/* handles lfdp, lxsd, lxssp */
GEN_HANDLER_E(dform39, 0x39, 0xFF, 0xFF, 0x00000000, PPC_NONE, PPC2_ISA205),
GEN_HANDLER(lmw, 0x2E, 0xFF, 0xFF, 0x00000000, PPC_INTEGER),
GEN_HANDLER(stmw, 0x2F, 0xFF, 0xFF, 0x00000000, PPC_INTEGER),
GEN_HANDLER(lswi, 0x1F, 0x15, 0x12, 0x00000001, PPC_STRING),

1
target/ppc/translate/fp-ops.inc.c
View File

@ -68,7 +68,6 @@ GEN_LDFS(lfd, ld64, 0x12, PPC_FLOAT)
GEN_LDFS(lfs, ld32fs, 0x10, PPC_FLOAT)
GEN_HANDLER_E(lfiwax, 0x1f, 0x17, 0x1a, 0x00000001, PPC_NONE, PPC2_ISA205),
GEN_HANDLER_E(lfiwzx, 0x1f, 0x17, 0x1b, 0x1, PPC_NONE, PPC2_FP_CVT_ISA206),
GEN_HANDLER_E(lfdp, 0x39, 0xFF, 0xFF, 0x00200003, PPC_NONE, PPC2_ISA205),
GEN_HANDLER_E(lfdpx, 0x1F, 0x17, 0x18, 0x00200001, PPC_NONE, PPC2_ISA205),
#define GEN_STF(name, stop, opc, type) \

21
target/ppc/translate/vsx-impl.inc.c
View File

@ -190,6 +190,27 @@ static void gen_lxvb16x(DisasContext *ctx)
tcg_temp_free(EA);
}
#define VSX_LOAD_SCALAR_DS(name, operation) \
static void gen_##name(DisasContext *ctx) \
{ \
TCGv EA; \
TCGv_i64 xth = cpu_vsrh(rD(ctx->opcode) + 32); \
\
if (unlikely(!ctx->altivec_enabled)) { \
gen_exception(ctx, POWERPC_EXCP_VPU); \
return; \
} \
gen_set_access_type(ctx, ACCESS_INT); \
EA = tcg_temp_new(); \
gen_addr_imm_index(ctx, EA, 0x03); \
gen_qemu_##operation(ctx, xth, EA); \
/* NOTE: cpu_vsrl is undefined */ \
tcg_temp_free(EA); \
}
VSX_LOAD_SCALAR_DS(lxsd, ld64_i64)
VSX_LOAD_SCALAR_DS(lxssp, ld32fs)
#define VSX_STORE_SCALAR(name, operation) \
static void gen_##name(DisasContext *ctx) \
{ \