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target-ppc: add dtstsfi[q] instructions 

DFP Test Significance Immediate [Quad]

Signed-off-by: Sandipan Das <sandipandas1990@gmail.com>
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:
Sandipan Das 2016-07-28 23:44:13 +05:30 committed by David Gibson
parent 4110b586de
commit 217f6b8805
4 changed files with 71 additions and 0 deletions
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35
target-ppc/dfp_helper.c
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@ -647,6 +647,41 @@ uint32_t helper_##op(CPUPPCState *env, uint64_t *a, uint64_t *b) \
DFP_HELPER_TSTSF(dtstsf, 64)
DFP_HELPER_TSTSF(dtstsfq, 128)
#define DFP_HELPER_TSTSFI(op, size) \
uint32_t helper_##op(CPUPPCState *env, uint32_t a, uint64_t *b) \
{ \
struct PPC_DFP dfp; \
unsigned uim; \
\
dfp_prepare_decimal##size(&dfp, 0, b, env); \
\
uim = a & 0x3F; \
\
if (unlikely(decNumberIsSpecial(&dfp.b))) { \
dfp.crbf = 1; \
} else if (uim == 0) { \
dfp.crbf = 4; \
} else if (unlikely(decNumberIsZero(&dfp.b))) { \
/* Zero has no sig digits */ \
dfp.crbf = 4; \
} else { \
unsigned nsd = dfp.b.digits; \
if (uim < nsd) { \
dfp.crbf = 8; \
} else if (uim > nsd) { \
dfp.crbf = 4; \
} else { \
dfp.crbf = 2; \
} \
} \
\
dfp_set_FPCC_from_CRBF(&dfp); \
return dfp.crbf; \
}
DFP_HELPER_TSTSFI(dtstsfi, 64)
DFP_HELPER_TSTSFI(dtstsfiq, 128)
static void QUA_PPs(struct PPC_DFP *dfp)
{
dfp_set_FPRF_from_FRT(dfp);

2
target-ppc/helper.h
View File

@ -645,6 +645,8 @@ DEF_HELPER_3(dtstex, i32, env, fprp, fprp)
DEF_HELPER_3(dtstexq, i32, env, fprp, fprp)
DEF_HELPER_3(dtstsf, i32, env, fprp, fprp)
DEF_HELPER_3(dtstsfq, i32, env, fprp, fprp)
DEF_HELPER_3(dtstsfi, i32, env, i32, fprp)
DEF_HELPER_3(dtstsfiq, i32, env, i32, fprp)
DEF_HELPER_5(dquai, void, env, fprp, fprp, i32, i32)
DEF_HELPER_5(dquaiq, void, env, fprp, fprp, i32, i32)
DEF_HELPER_5(dqua, void, env, fprp, fprp, fprp, i32)

20
target-ppc/translate/dfp-impl.c
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@ -45,6 +45,24 @@ static void gen_##name(DisasContext *ctx) \
tcg_temp_free_ptr(rb); \
}
#define GEN_DFP_BF_I_B(name) \
static void gen_##name(DisasContext *ctx) \
{ \
TCGv_i32 uim; \
TCGv_ptr rb; \
if (unlikely(!ctx->fpu_enabled)) { \
gen_exception(ctx, POWERPC_EXCP_FPU); \
return; \
} \
gen_update_nip(ctx, ctx->nip - 4); \
uim = tcg_const_i32(UIMM5(ctx->opcode)); \
rb = gen_fprp_ptr(rB(ctx->opcode)); \
gen_helper_##name(cpu_crf[crfD(ctx->opcode)], \
cpu_env, uim, rb); \
tcg_temp_free_i32(uim); \
tcg_temp_free_ptr(rb); \
}
#define GEN_DFP_BF_A_DCM(name) \
static void gen_##name(DisasContext *ctx) \
{ \
@ -172,6 +190,8 @@ GEN_DFP_BF_A_B(dtstex)
GEN_DFP_BF_A_B(dtstexq)
GEN_DFP_BF_A_B(dtstsf)
GEN_DFP_BF_A_B(dtstsfq)
GEN_DFP_BF_I_B(dtstsfi)
GEN_DFP_BF_I_B(dtstsfiq)
GEN_DFP_T_B_U32_U32_Rc(dquai, SIMM5, RMC)
GEN_DFP_T_B_U32_U32_Rc(dquaiq, SIMM5, RMC)
GEN_DFP_T_A_B_I32_Rc(dqua, RMC)

14
target-ppc/translate/dfp-ops.c
View File

@ -1,6 +1,9 @@
#define _GEN_DFP_LONG(name, op1, op2, mask) \
GEN_HANDLER_E(name, 0x3B, op1, op2, mask, PPC_NONE, PPC2_DFP)
#define _GEN_DFP_LONG_300(name, op1, op2, mask) \
GEN_HANDLER_E(name, 0x3B, op1, op2, mask, PPC_NONE, PPC2_ISA300)
#define _GEN_DFP_LONGx2(name, op1, op2, mask) \
GEN_HANDLER_E(name, 0x3B, op1, 0x00 | op2, mask, PPC_NONE, PPC2_DFP), \
GEN_HANDLER_E(name, 0x3B, op1, 0x10 | op2, mask, PPC_NONE, PPC2_DFP)
@ -14,6 +17,9 @@ GEN_HANDLER_E(name, 0x3B, op1, 0x18 | op2, mask, PPC_NONE, PPC2_DFP)
#define _GEN_DFP_QUAD(name, op1, op2, mask) \
GEN_HANDLER_E(name, 0x3F, op1, op2, mask, PPC_NONE, PPC2_DFP)
#define _GEN_DFP_QUAD_300(name, op1, op2, mask) \
GEN_HANDLER_E(name, 0x3F, op1, op2, mask, PPC_NONE, PPC2_ISA300)
#define _GEN_DFP_QUADx2(name, op1, op2, mask) \
GEN_HANDLER_E(name, 0x3F, op1, 0x00 | op2, mask, PPC_NONE, PPC2_DFP), \
GEN_HANDLER_E(name, 0x3F, op1, 0x10 | op2, mask, PPC_NONE, PPC2_DFP)
@ -48,12 +54,18 @@ _GEN_DFP_QUAD(name, op1, op2, 0x001F0800)
#define GEN_DFP_BF_A_B(name, op1, op2) \
_GEN_DFP_LONG(name, op1, op2, 0x00000001)
#define GEN_DFP_BF_A_B_300(name, op1, op2) \
_GEN_DFP_LONG_300(name, op1, op2, 0x00400001)
#define GEN_DFP_BF_Ap_Bp(name, op1, op2) \
_GEN_DFP_QUAD(name, op1, op2, 0x00610801)
#define GEN_DFP_BF_A_Bp(name, op1, op2) \
_GEN_DFP_QUAD(name, op1, op2, 0x00600801)
#define GEN_DFP_BF_A_Bp_300(name, op1, op2) \
_GEN_DFP_QUAD_300(name, op1, op2, 0x00400001)
#define GEN_DFP_BF_A_DCM(name, op1, op2) \
_GEN_DFP_LONGx2(name, op1, op2, 0x00600001)
@ -119,6 +131,8 @@ GEN_DFP_BF_A_B(dtstex, 0x02, 0x05),
GEN_DFP_BF_Ap_Bp(dtstexq, 0x02, 0x05),
GEN_DFP_BF_A_B(dtstsf, 0x02, 0x15),
GEN_DFP_BF_A_Bp(dtstsfq, 0x02, 0x15),
GEN_DFP_BF_A_B_300(dtstsfi, 0x03, 0x15),
GEN_DFP_BF_A_Bp_300(dtstsfiq, 0x03, 0x15),
GEN_DFP_TE_T_B_RMC_Rc(dquai, 0x03, 0x02),
GEN_DFP_TE_Tp_Bp_RMC_Rc(dquaiq, 0x03, 0x02),
GEN_DFP_T_A_B_RMC_Rc(dqua, 0x03, 0x00),