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target-ppc: Scalar Round to Single Precision 

This patch adds the VSX Scalar Round to Single Precision (xsrsp)
instruction.

Signed-off-by: Tom Musta <tommusta@gmail.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Tom Musta 2014-01-15 08:10:44 -06:00 committed by Alexander Graf
parent 097ec5d850
commit 3d1140bf3e
3 changed files with 29 additions and 0 deletions
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11
target-ppc/fpu_helper.c
View File

@ -2666,3 +2666,14 @@ VSX_ROUND(xvrspic, 4, float32, f32, FLOAT_ROUND_CURRENT, 0)
VSX_ROUND(xvrspim, 4, float32, f32, float_round_down, 0)
VSX_ROUND(xvrspip, 4, float32, f32, float_round_up, 0)
VSX_ROUND(xvrspiz, 4, float32, f32, float_round_to_zero, 0)
uint64_t helper_xsrsp(CPUPPCState *env, uint64_t xb)
{
helper_reset_fpstatus(env);
uint64_t xt = helper_frsp(env, xb);
helper_compute_fprf(env, xt, 1);
helper_float_check_status(env);
return xt;
}

1
target-ppc/helper.h
View File

@ -293,6 +293,7 @@ DEF_HELPER_2(xssubsp, void, env, i32)
DEF_HELPER_2(xsmulsp, void, env, i32)
DEF_HELPER_2(xsdivsp, void, env, i32)
DEF_HELPER_2(xsresp, void, env, i32)
DEF_HELPER_2(xsrsp, i64, env, i64)
DEF_HELPER_2(xssqrtsp, void, env, i32)
DEF_HELPER_2(xsrsqrtesp, void, env, i32)
DEF_HELPER_2(xsmaddasp, void, env, i32)

17
target-ppc/translate.c
View File

@ -7400,6 +7400,21 @@ static void gen_##name(DisasContext * ctx) \
tcg_temp_free_i32(opc); \
}
#define GEN_VSX_HELPER_XT_XB_ENV(name, op1, op2, inval, type) \
static void gen_##name(DisasContext * ctx) \
{ \
if (unlikely(!ctx->vsx_enabled)) { \
gen_exception(ctx, POWERPC_EXCP_VSXU); \
return; \
} \
/* NIP cannot be restored if the exception comes */ \
/* from a helper. */ \
gen_update_nip(ctx, ctx->nip - 4); \
\
gen_helper_##name(cpu_vsrh(xT(ctx->opcode)), cpu_env, \
cpu_vsrh(xB(ctx->opcode))); \
}
GEN_VSX_HELPER_2(xsadddp, 0x00, 0x04, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xssubdp, 0x00, 0x05, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xsmuldp, 0x00, 0x06, 0, PPC2_VSX)
@ -7434,6 +7449,7 @@ GEN_VSX_HELPER_2(xsrdpic, 0x16, 0x06, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xsrdpim, 0x12, 0x07, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xsrdpip, 0x12, 0x06, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xsrdpiz, 0x12, 0x05, 0, PPC2_VSX)
GEN_VSX_HELPER_XT_XB_ENV(xsrsp, 0x12, 0x11, 0, PPC2_VSX207)
GEN_VSX_HELPER_2(xsaddsp, 0x00, 0x00, 0, PPC2_VSX207)
GEN_VSX_HELPER_2(xssubsp, 0x00, 0x01, 0, PPC2_VSX207)
@ -10277,6 +10293,7 @@ GEN_XX3FORM(xssubsp, 0x00, 0x01, PPC2_VSX207),
GEN_XX3FORM(xsmulsp, 0x00, 0x02, PPC2_VSX207),
GEN_XX3FORM(xsdivsp, 0x00, 0x03, PPC2_VSX207),
GEN_XX2FORM(xsresp, 0x14, 0x01, PPC2_VSX207),
GEN_XX2FORM(xsrsp, 0x12, 0x11, PPC2_VSX207),
GEN_XX2FORM(xssqrtsp, 0x16, 0x00, PPC2_VSX207),
GEN_XX2FORM(xsrsqrtesp, 0x14, 0x00, PPC2_VSX207),
GEN_XX3FORM(xsmaddasp, 0x04, 0x00, PPC2_VSX207),