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target-ppc: Add VSX ISA2.06 xsqrt Instructions 

This patch adds the VSX floating point square root instructions
defined by V2.06 of the PowerPC ISA: xssqrtdp, xvsqrtdp, xvsqrtsp.

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 2014-01-02 16:21:25 -06:00 committed by Alexander Graf
parent 2009227fbe
commit d32404fe42
3 changed files with 53 additions and 0 deletions
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44
target-ppc/fpu_helper.c
View File

@ -1939,3 +1939,47 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \
VSX_RE(xsredp, 1, float64, f64, 1)
VSX_RE(xvredp, 2, float64, f64, 0)
VSX_RE(xvresp, 4, float32, f32, 0)
/* VSX_SQRT - VSX floating point square root
* op - instruction mnemonic
* nels - number of elements (1, 2 or 4)
* tp - type (float32 or float64)
* fld - vsr_t field (f32 or f64)
* sfprf - set FPRF
*/
#define VSX_SQRT(op, nels, tp, fld, sfprf) \
void helper_##op(CPUPPCState *env, uint32_t opcode) \
{ \
ppc_vsr_t xt, xb; \
int i; \
\
getVSR(xB(opcode), &xb, env); \
getVSR(xT(opcode), &xt, env); \
helper_reset_fpstatus(env); \
\
for (i = 0; i < nels; i++) { \
float_status tstat = env->fp_status; \
set_float_exception_flags(0, &tstat); \
xt.fld[i] = tp##_sqrt(xb.fld[i], &tstat); \
env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
\
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
if (tp##_is_neg(xb.fld[i]) && !tp##_is_zero(xb.fld[i])) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSQRT, sfprf); \
} else if (tp##_is_signaling_nan(xb.fld[i])) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, sfprf); \
} \
} \
\
if (sfprf) { \
helper_compute_fprf(env, xt.fld[i], sfprf); \
} \
} \
\
putVSR(xT(opcode), &xt, env); \
helper_float_check_status(env); \
}
VSX_SQRT(xssqrtdp, 1, float64, f64, 1)
VSX_SQRT(xvsqrtdp, 2, float64, f64, 0)
VSX_SQRT(xvsqrtsp, 4, float32, f32, 0)

3
target-ppc/helper.h
View File

@ -256,18 +256,21 @@ DEF_HELPER_2(xssubdp, void, env, i32)
DEF_HELPER_2(xsmuldp, void, env, i32)
DEF_HELPER_2(xsdivdp, void, env, i32)
DEF_HELPER_2(xsredp, void, env, i32)
DEF_HELPER_2(xssqrtdp, void, env, i32)
DEF_HELPER_2(xvadddp, void, env, i32)
DEF_HELPER_2(xvsubdp, void, env, i32)
DEF_HELPER_2(xvmuldp, void, env, i32)
DEF_HELPER_2(xvdivdp, void, env, i32)
DEF_HELPER_2(xvredp, void, env, i32)
DEF_HELPER_2(xvsqrtdp, void, env, i32)
DEF_HELPER_2(xvaddsp, void, env, i32)
DEF_HELPER_2(xvsubsp, void, env, i32)
DEF_HELPER_2(xvmulsp, void, env, i32)
DEF_HELPER_2(xvdivsp, void, env, i32)
DEF_HELPER_2(xvresp, void, env, i32)
DEF_HELPER_2(xvsqrtsp, void, env, i32)
DEF_HELPER_2(efscfsi, i32, env, i32)
DEF_HELPER_2(efscfui, i32, env, i32)

6
target-ppc/translate.c
View File

@ -7309,18 +7309,21 @@ GEN_VSX_HELPER_2(xssubdp, 0x00, 0x05, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xsmuldp, 0x00, 0x06, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xsdivdp, 0x00, 0x07, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xsredp, 0x14, 0x05, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xssqrtdp, 0x16, 0x04, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvadddp, 0x00, 0x0C, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvsubdp, 0x00, 0x0D, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvmuldp, 0x00, 0x0E, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvdivdp, 0x00, 0x0F, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvredp, 0x14, 0x0D, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvsqrtdp, 0x16, 0x0C, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvaddsp, 0x00, 0x08, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvsubsp, 0x00, 0x09, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvmulsp, 0x00, 0x0A, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvdivsp, 0x00, 0x0B, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvresp, 0x14, 0x09, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvsqrtsp, 0x16, 0x08, 0, PPC2_VSX)
#define VSX_LOGICAL(name, tcg_op) \
static void glue(gen_, name)(DisasContext * ctx) \
@ -10008,18 +10011,21 @@ GEN_XX3FORM(xssubdp, 0x00, 0x05, PPC2_VSX),
GEN_XX3FORM(xsmuldp, 0x00, 0x06, PPC2_VSX),
GEN_XX3FORM(xsdivdp, 0x00, 0x07, PPC2_VSX),
GEN_XX2FORM(xsredp, 0x14, 0x05, PPC2_VSX),
GEN_XX2FORM(xssqrtdp, 0x16, 0x04, PPC2_VSX),
GEN_XX3FORM(xvadddp, 0x00, 0x0C, PPC2_VSX),
GEN_XX3FORM(xvsubdp, 0x00, 0x0D, PPC2_VSX),
GEN_XX3FORM(xvmuldp, 0x00, 0x0E, PPC2_VSX),
GEN_XX3FORM(xvdivdp, 0x00, 0x0F, PPC2_VSX),
GEN_XX2FORM(xvredp, 0x14, 0x0D, PPC2_VSX),
GEN_XX2FORM(xvsqrtdp, 0x16, 0x0C, PPC2_VSX),
GEN_XX3FORM(xvaddsp, 0x00, 0x08, PPC2_VSX),
GEN_XX3FORM(xvsubsp, 0x00, 0x09, PPC2_VSX),
GEN_XX3FORM(xvmulsp, 0x00, 0x0A, PPC2_VSX),
GEN_XX3FORM(xvdivsp, 0x00, 0x0B, PPC2_VSX),
GEN_XX2FORM(xvresp, 0x14, 0x09, PPC2_VSX),
GEN_XX2FORM(xvsqrtsp, 0x16, 0x08, PPC2_VSX),
#undef VSX_LOGICAL
#define VSX_LOGICAL(name, opc2, opc3, fl2) \