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[Qemu-devel] [PATCH V3 13/19] Add VSX ISA2.06 Multiply Add Instructions
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From: |
Tom Musta |
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Subject: |
[Qemu-devel] [PATCH V3 13/19] Add VSX ISA2.06 Multiply Add Instructions |
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Date: |
Fri, 1 Nov 2013 08:35:49 -0500 |
This patch adds the VSX floating point multiply/add instructions
defined by V2.06 of the PowerPC ISA:
- xsmaddadp, xvmaddadp, xvmaddasp
- xsmaddmdp, xvmaddmdp, xvmaddmsp
- xsmsubadp, xvmsubadp, xvmsubasp
- xsmsubmdp, xvmsubmdp, xvmsubmsp
- xsnmaddadp, xvnmaddadp, xvnmaddasp
- xsnmaddmdp, xvnmaddmdp, xvnmaddmsp
- xsnmsubadp, xvnmsubadp, xvnmsubasp
- xsnmsubmdp, xvnmsubmdp, xvnmsubmsp
V2: reworked implementation per comments from Richard Henderson and
Peter Maydell.
Signed-off-by: Tom Musta <address@hidden>
---
target-ppc/fpu_helper.c | 100 +++++++++++++++++++++++++++++++++++++++++++++++
target-ppc/helper.h | 24 +++++++++++
target-ppc/translate.c | 48 ++++++++++++++++++++++
3 files changed, 172 insertions(+), 0 deletions(-)
diff --git a/target-ppc/fpu_helper.c b/target-ppc/fpu_helper.c
index 73227b7..54c47c8 100644
--- a/target-ppc/fpu_helper.c
+++ b/target-ppc/fpu_helper.c
@@ -2149,3 +2149,103 @@ void helper_##op(CPUPPCState *env, uint32_t opcode)
\
VSX_TSQRT(xstsqrtdp, 1, float64, f64, -1022, 52)
VSX_TSQRT(xvtsqrtdp, 2, float64, f64, -1022, 52)
VSX_TSQRT(xvtsqrtsp, 4, float32, f32, -126, 23)
+
+/* VSX_MADD - VSX floating point muliply/add variations
+ * op - instruction mnemonic
+ * nels - number of elements (1, 2 or 4)
+ * tp - type (float32 or float64)
+ * fld - vsr_t field (f32 or f64)
+ * maddflgs - flags for the float*muladd routine that control the
+ * various forms (madd, msub, nmadd, nmsub)
+ * afrm - A form (1=A, 0=M)
+ * sfprf - set FPRF
+ */
+#define VSX_MADD(op, nels, tp, fld, maddflgs, afrm, sfprf) \
+void helper_##op(CPUPPCState *env, uint32_t opcode) \
+{ \
+ ppc_vsr_t xt_in, xa, xb, xt_out; \
+ ppc_vsr_t *b, *c; \
+ int i; \
+ \
+ if (afrm) { /* AxB + T */ \
+ b = &xb; \
+ c = &xt_in; \
+ } else { /* AxT + B */ \
+ b = &xt_in; \
+ c = &xb; \
+ } \
+ \
+ getVSR(xA(opcode), &xa, env); \
+ getVSR(xB(opcode), &xb, env); \
+ getVSR(xT(opcode), &xt_in, env); \
+ \
+ xt_out = xt_in; \
+ \
+ helper_reset_fpstatus(env); \
+ \
+ for (i = 0; i < nels; i++) { \
+ float_status tstat = env->fp_status; \
+ set_float_exception_flags(0, &tstat); \
+ xt_out.fld[i] = tp##_muladd(xa.fld[i], b->fld[i], c->fld[i], \
+ maddflgs, &tstat); \
+ env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
+ \
+ if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
+ if (tp##_is_signaling_nan(xa.fld[i]) || \
+ tp##_is_signaling_nan(b->fld[i]) || \
+ tp##_is_signaling_nan(c->fld[i])) { \
+ fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, sfprf); \
+ tstat.float_exception_flags &= ~float_flag_invalid; \
+ } \
+ if ((tp##_is_infinity(xa.fld[i]) && tp##_is_zero(b->fld[i])) || \
+ (tp##_is_zero(xa.fld[i]) && tp##_is_infinity(b->fld[i]))) { \
+ xt_out.fld[i] = float64_to_##tp(fload_invalid_op_excp(env, \
+ POWERPC_EXCP_FP_VXIMZ, sfprf), &env->fp_status); \
+ tstat.float_exception_flags &= ~float_flag_invalid; \
+ } \
+ if ((tstat.float_exception_flags & float_flag_invalid) && \
+ ((tp##_is_infinity(xa.fld[i]) || \
+ tp##_is_infinity(b->fld[i])) && \
+ tp##_is_infinity(c->fld[i]))) { \
+ fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXISI, sfprf); \
+ } \
+ } \
+ if (sfprf) { \
+ helper_compute_fprf(env, xt_out.fld[i], sfprf); \
+ } \
+ } \
+ putVSR(xT(opcode), &xt_out, env); \
+ helper_float_check_status(env); \
+}
+
+#define MADD_FLGS 0
+#define MSUB_FLGS float_muladd_negate_c
+#define NMADD_FLGS float_muladd_negate_result
+#define NMSUB_FLGS (float_muladd_negate_c | float_muladd_negate_result)
+
+VSX_MADD(xsmaddadp, 1, float64, f64, MADD_FLGS, 1, 1)
+VSX_MADD(xsmaddmdp, 1, float64, f64, MADD_FLGS, 0, 1)
+VSX_MADD(xsmsubadp, 1, float64, f64, MSUB_FLGS, 1, 1)
+VSX_MADD(xsmsubmdp, 1, float64, f64, MSUB_FLGS, 0, 1)
+VSX_MADD(xsnmaddadp, 1, float64, f64, NMADD_FLGS, 1, 1)
+VSX_MADD(xsnmaddmdp, 1, float64, f64, NMADD_FLGS, 0, 1)
+VSX_MADD(xsnmsubadp, 1, float64, f64, NMSUB_FLGS, 1, 1)
+VSX_MADD(xsnmsubmdp, 1, float64, f64, NMSUB_FLGS, 0, 1)
+
+VSX_MADD(xvmaddadp, 2, float64, f64, MADD_FLGS, 1, 0)
+VSX_MADD(xvmaddmdp, 2, float64, f64, MADD_FLGS, 0, 0)
+VSX_MADD(xvmsubadp, 2, float64, f64, MSUB_FLGS, 1, 0)
+VSX_MADD(xvmsubmdp, 2, float64, f64, MSUB_FLGS, 0, 0)
+VSX_MADD(xvnmaddadp, 2, float64, f64, NMADD_FLGS, 1, 0)
+VSX_MADD(xvnmaddmdp, 2, float64, f64, NMADD_FLGS, 0, 0)
+VSX_MADD(xvnmsubadp, 2, float64, f64, NMSUB_FLGS, 1, 0)
+VSX_MADD(xvnmsubmdp, 2, float64, f64, NMSUB_FLGS, 0, 0)
+
+VSX_MADD(xvmaddasp, 4, float32, f32, MADD_FLGS, 1, 0)
+VSX_MADD(xvmaddmsp, 4, float32, f32, MADD_FLGS, 0, 0)
+VSX_MADD(xvmsubasp, 4, float32, f32, MSUB_FLGS, 1, 0)
+VSX_MADD(xvmsubmsp, 4, float32, f32, MSUB_FLGS, 0, 0)
+VSX_MADD(xvnmaddasp, 4, float32, f32, NMADD_FLGS, 1, 0)
+VSX_MADD(xvnmaddmsp, 4, float32, f32, NMADD_FLGS, 0, 0)
+VSX_MADD(xvnmsubasp, 4, float32, f32, NMSUB_FLGS, 1, 0)
+VSX_MADD(xvnmsubmsp, 4, float32, f32, NMSUB_FLGS, 0, 0)
diff --git a/target-ppc/helper.h b/target-ppc/helper.h
index c413c98..7368908 100644
--- a/target-ppc/helper.h
+++ b/target-ppc/helper.h
@@ -260,6 +260,14 @@ DEF_HELPER_2(xssqrtdp, void, env, i32)
DEF_HELPER_2(xsrsqrtedp, void, env, i32)
DEF_HELPER_2(xstdivdp, void, env, i32)
DEF_HELPER_2(xstsqrtdp, void, env, i32)
+DEF_HELPER_2(xsmaddadp, void, env, i32)
+DEF_HELPER_2(xsmaddmdp, void, env, i32)
+DEF_HELPER_2(xsmsubadp, void, env, i32)
+DEF_HELPER_2(xsmsubmdp, void, env, i32)
+DEF_HELPER_2(xsnmaddadp, void, env, i32)
+DEF_HELPER_2(xsnmaddmdp, void, env, i32)
+DEF_HELPER_2(xsnmsubadp, void, env, i32)
+DEF_HELPER_2(xsnmsubmdp, void, env, i32)
DEF_HELPER_2(xvadddp, void, env, i32)
DEF_HELPER_2(xvsubdp, void, env, i32)
@@ -270,6 +278,14 @@ DEF_HELPER_2(xvsqrtdp, void, env, i32)
DEF_HELPER_2(xvrsqrtedp, void, env, i32)
DEF_HELPER_2(xvtdivdp, void, env, i32)
DEF_HELPER_2(xvtsqrtdp, void, env, i32)
+DEF_HELPER_2(xvmaddadp, void, env, i32)
+DEF_HELPER_2(xvmaddmdp, void, env, i32)
+DEF_HELPER_2(xvmsubadp, void, env, i32)
+DEF_HELPER_2(xvmsubmdp, void, env, i32)
+DEF_HELPER_2(xvnmaddadp, void, env, i32)
+DEF_HELPER_2(xvnmaddmdp, void, env, i32)
+DEF_HELPER_2(xvnmsubadp, void, env, i32)
+DEF_HELPER_2(xvnmsubmdp, void, env, i32)
DEF_HELPER_2(xvaddsp, void, env, i32)
DEF_HELPER_2(xvsubsp, void, env, i32)
@@ -280,6 +296,14 @@ DEF_HELPER_2(xvsqrtsp, void, env, i32)
DEF_HELPER_2(xvrsqrtesp, void, env, i32)
DEF_HELPER_2(xvtdivsp, void, env, i32)
DEF_HELPER_2(xvtsqrtsp, void, env, i32)
+DEF_HELPER_2(xvmaddasp, void, env, i32)
+DEF_HELPER_2(xvmaddmsp, void, env, i32)
+DEF_HELPER_2(xvmsubasp, void, env, i32)
+DEF_HELPER_2(xvmsubmsp, void, env, i32)
+DEF_HELPER_2(xvnmaddasp, void, env, i32)
+DEF_HELPER_2(xvnmaddmsp, void, env, i32)
+DEF_HELPER_2(xvnmsubasp, void, env, i32)
+DEF_HELPER_2(xvnmsubmsp, void, env, i32)
DEF_HELPER_2(efscfsi, i32, env, i32)
DEF_HELPER_2(efscfui, i32, env, i32)
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index f1935c7..3a62125 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -7304,6 +7304,14 @@ GEN_VSX_HELPER_2(xssqrtdp, 0x16, 0x04, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xsrsqrtedp, 0x14, 0x04, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xstdivdp, 0x14, 0x07, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xstsqrtdp, 0x14, 0x06, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xsmaddadp, 0x04, 0x04, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xsmaddmdp, 0x04, 0x05, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xsmsubadp, 0x04, 0x06, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xsmsubmdp, 0x04, 0x07, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xsnmaddadp, 0x04, 0x14, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xsnmaddmdp, 0x04, 0x15, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xsnmsubadp, 0x04, 0x16, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xsnmsubmdp, 0x04, 0x17, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvadddp, 0x00, 0x0C, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvsubdp, 0x00, 0x0D, 0, PPC2_VSX)
@@ -7314,6 +7322,14 @@ GEN_VSX_HELPER_2(xvsqrtdp, 0x16, 0x0C, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvrsqrtedp, 0x14, 0x0C, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvtdivdp, 0x14, 0x0F, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvtsqrtdp, 0x14, 0x0E, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvmaddadp, 0x04, 0x0C, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvmaddmdp, 0x04, 0x0D, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvmsubadp, 0x04, 0x0E, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvmsubmdp, 0x04, 0x0F, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvnmaddadp, 0x04, 0x1C, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvnmaddmdp, 0x04, 0x1D, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvnmsubadp, 0x04, 0x1E, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvnmsubmdp, 0x04, 0x1F, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvaddsp, 0x00, 0x08, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvsubsp, 0x00, 0x09, 0, PPC2_VSX)
@@ -7324,6 +7340,14 @@ GEN_VSX_HELPER_2(xvsqrtsp, 0x16, 0x08, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvrsqrtesp, 0x14, 0x08, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvtdivsp, 0x14, 0x0B, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvtsqrtsp, 0x14, 0x0A, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvmaddasp, 0x04, 0x08, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvmaddmsp, 0x04, 0x09, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvmsubasp, 0x04, 0x0A, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvmsubmsp, 0x04, 0x0B, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvnmaddasp, 0x04, 0x18, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvnmaddmsp, 0x04, 0x19, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvnmsubasp, 0x04, 0x1A, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvnmsubmsp, 0x04, 0x1B, 0, PPC2_VSX)
#define VSX_LOGICAL(name, tcg_op) \
static void glue(gen_, name)(DisasContext * ctx) \
@@ -10016,6 +10040,14 @@ GEN_XX2FORM(xssqrtdp, 0x16, 0x04, PPC2_VSX),
GEN_XX2FORM(xsrsqrtedp, 0x14, 0x04, PPC2_VSX),
GEN_XX3FORM(xstdivdp, 0x14, 0x07, PPC2_VSX),
GEN_XX2FORM(xstsqrtdp, 0x14, 0x06, PPC2_VSX),
+GEN_XX3FORM(xsmaddadp, 0x04, 0x04, PPC2_VSX),
+GEN_XX3FORM(xsmaddmdp, 0x04, 0x05, PPC2_VSX),
+GEN_XX3FORM(xsmsubadp, 0x04, 0x06, PPC2_VSX),
+GEN_XX3FORM(xsmsubmdp, 0x04, 0x07, PPC2_VSX),
+GEN_XX3FORM(xsnmaddadp, 0x04, 0x14, PPC2_VSX),
+GEN_XX3FORM(xsnmaddmdp, 0x04, 0x15, PPC2_VSX),
+GEN_XX3FORM(xsnmsubadp, 0x04, 0x16, PPC2_VSX),
+GEN_XX3FORM(xsnmsubmdp, 0x04, 0x17, PPC2_VSX),
GEN_XX3FORM(xvadddp, 0x00, 0x0C, PPC2_VSX),
GEN_XX3FORM(xvsubdp, 0x00, 0x0D, PPC2_VSX),
@@ -10026,6 +10058,14 @@ GEN_XX2FORM(xvsqrtdp, 0x16, 0x0C, PPC2_VSX),
GEN_XX2FORM(xvrsqrtedp, 0x14, 0x0C, PPC2_VSX),
GEN_XX3FORM(xvtdivdp, 0x14, 0x0F, PPC2_VSX),
GEN_XX2FORM(xvtsqrtdp, 0x14, 0x0E, PPC2_VSX),
+GEN_XX3FORM(xvmaddadp, 0x04, 0x0C, PPC2_VSX),
+GEN_XX3FORM(xvmaddmdp, 0x04, 0x0D, PPC2_VSX),
+GEN_XX3FORM(xvmsubadp, 0x04, 0x0E, PPC2_VSX),
+GEN_XX3FORM(xvmsubmdp, 0x04, 0x0F, PPC2_VSX),
+GEN_XX3FORM(xvnmaddadp, 0x04, 0x1C, PPC2_VSX),
+GEN_XX3FORM(xvnmaddmdp, 0x04, 0x1D, PPC2_VSX),
+GEN_XX3FORM(xvnmsubadp, 0x04, 0x1E, PPC2_VSX),
+GEN_XX3FORM(xvnmsubmdp, 0x04, 0x1F, PPC2_VSX),
GEN_XX3FORM(xvaddsp, 0x00, 0x08, PPC2_VSX),
GEN_XX3FORM(xvsubsp, 0x00, 0x09, PPC2_VSX),
@@ -10036,6 +10076,14 @@ GEN_XX2FORM(xvsqrtsp, 0x16, 0x08, PPC2_VSX),
GEN_XX2FORM(xvrsqrtesp, 0x14, 0x08, PPC2_VSX),
GEN_XX3FORM(xvtdivsp, 0x14, 0x0B, PPC2_VSX),
GEN_XX2FORM(xvtsqrtsp, 0x14, 0x0A, PPC2_VSX),
+GEN_XX3FORM(xvmaddasp, 0x04, 0x08, PPC2_VSX),
+GEN_XX3FORM(xvmaddmsp, 0x04, 0x09, PPC2_VSX),
+GEN_XX3FORM(xvmsubasp, 0x04, 0x0A, PPC2_VSX),
+GEN_XX3FORM(xvmsubmsp, 0x04, 0x0B, PPC2_VSX),
+GEN_XX3FORM(xvnmaddasp, 0x04, 0x18, PPC2_VSX),
+GEN_XX3FORM(xvnmaddmsp, 0x04, 0x19, PPC2_VSX),
+GEN_XX3FORM(xvnmsubasp, 0x04, 0x1A, PPC2_VSX),
+GEN_XX3FORM(xvnmsubmsp, 0x04, 0x1B, PPC2_VSX),
#undef VSX_LOGICAL
#define VSX_LOGICAL(name, opc2, opc3, fl2) \
--
1.7.1
- [Qemu-devel] [PATCH V3 03/19] Add set_fprf Argument to fload_invalid_op_excp(), (continued)
- [Qemu-devel] [PATCH V3 03/19] Add set_fprf Argument to fload_invalid_op_excp(), Tom Musta, 2013/11/01
- [Qemu-devel] [PATCH V3 04/19] General Support for VSX Helpers, Tom Musta, 2013/11/01
- [Qemu-devel] [PATCH V3 06/19] Add VSX ISA2.06 xmul Instructions, Tom Musta, 2013/11/01
- [Qemu-devel] [PATCH V3 05/19] Add VSX ISA2.06 xadd/xsub Instructions, Tom Musta, 2013/11/01
- [Qemu-devel] [PATCH V3 07/19] Add VSX ISA2.06 xdiv Instructions, Tom Musta, 2013/11/01
- [Qemu-devel] [PATCH V3 09/19] Add VSX ISA2.06 xsqrt Instructions, Tom Musta, 2013/11/01
- [Qemu-devel] [PATCH V3 10/19] Add VSX ISA2.06 xrsqrte Instructions, Tom Musta, 2013/11/01
- [Qemu-devel] [PATCH V3 08/19] Add VSX ISA2.06 xre Instructions, Tom Musta, 2013/11/01
- [Qemu-devel] [PATCH V3 11/19] Add VSX ISA2.06 xtdiv Instructions, Tom Musta, 2013/11/01
- [Qemu-devel] [PATCH V3 12/19] Add VSX ISA2.06 xtsqrt Instructions, Tom Musta, 2013/11/01
- [Qemu-devel] [PATCH V3 13/19] Add VSX ISA2.06 Multiply Add Instructions,
Tom Musta <=
- [Qemu-devel] [PATCH V3 14/19] Add VSX xscmp*dp Instructions, Tom Musta, 2013/11/01
- [Qemu-devel] [PATCH V3 15/19] Add VSX xmax/xmin Instructions, Tom Musta, 2013/11/01
- [Qemu-devel] [PATCH V3 16/19] Add VSX Vector Compare Instructions, Tom Musta, 2013/11/01
- [Qemu-devel] [PATCH V3 18/19] Add VSX ISA2.06 Integer Conversion Instructions, Tom Musta, 2013/11/01
- [Qemu-devel] [PATCH V3 17/19] Add VSX Floating Point to Floating Point Conversion Instructions, Tom Musta, 2013/11/01
- [Qemu-devel] [PATCH V3 19/19] Add VSX Rounding Instructions, Tom Musta, 2013/11/01