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[Qemu-devel] [PATCH 19/19] Add VSX Rounding Instructions
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From: |
Tom Musta |
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Subject: |
[Qemu-devel] [PATCH 19/19] Add VSX Rounding Instructions |
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Date: |
Thu, 24 Oct 2013 11:28:12 -0500 |
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User-agent: |
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.0.1 |
This patch adds the VSX Round to Floating Point Integer instructions:
- xsrdpi, xsrdpic, xsrdpim, xsrdpip, xsrdpiz
- xvrdpi, xvrdpic, xvrdpim, xvrdpip, xvrdpiz
- xvrspi, xvrspic, xvrspim, xvrspip, xvrspiz
Signed-off-by: Tom Musta <address@hidden>
---
target-ppc/fpu_helper.c | 68 +++++++++++++++++++++++++++++++++++++++++++++++
target-ppc/helper.h | 15 ++++++++++
target-ppc/translate.c | 30 ++++++++++++++++++++
3 files changed, 113 insertions(+), 0 deletions(-)
diff --git a/target-ppc/fpu_helper.c b/target-ppc/fpu_helper.c
index d00bcb8..697b949 100644
--- a/target-ppc/fpu_helper.c
+++ b/target-ppc/fpu_helper.c
@@ -2697,3 +2697,71 @@ VSX_CVT_INT_TO_FP(xvcvuxdsp, 2, uint64, float32, u64[i],
f32[j], \
2*i + JOFFSET, 0)
VSX_CVT_INT_TO_FP(xvcvsxwsp, 4, int32, float32, u32[j], f32[i], i, 0)
VSX_CVT_INT_TO_FP(xvcvuxwsp, 4, uint32, float32, u32[j], f32[i], i, 0)
+
+/* For "use current rounding mode", define a value that will not be one of
+ * the existing rounding model enums.
+ */
+#define FLOAT_ROUND_CURRENT (float_round_nearest_even + float_round_down + \
+ float_round_up + float_round_to_zero)
+
+/* VSX_ROUND - VSX floating point round
+ * op - instruction mnemonic
+ * nels - number of elements (1, 2 or 4)
+ * tp - type (float32 or float64)
+ * fld - vsr_t field (f32 or f64)
+ * rmode - rounding mode
+ * sfprf - set FPRF
+ */
+#define VSX_ROUND(op, nels, tp, fld, rmode, 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); \
+ \
+ if (rmode != FLOAT_ROUND_CURRENT) { \
+ set_float_rounding_mode(rmode, &env->fp_status); \
+ } \
+ \
+ for (i = 0; i < nels; i++) { \
+ if (unlikely(tp##_is_signaling_nan(xb.fld[i]))) { \
+ fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 0); \
+ xt.fld[i] = tp##_snan_to_qnan(xb.fld[i]); \
+ } else { \
+ xt.fld[i] = tp##_round_to_int(xb.fld[i], &env->fp_status); \
+ } \
+ if (sfprf) { \
+ helper_compute_fprf(env, xt.fld[i], sfprf); \
+ } \
+ } \
+ \
+ /* If this is not a "use current rounding mode" instruction, \
+ * then inhibit setting of the XX bit and restore rounding \
+ * mode from FPSCR */ \
+ if (rmode != FLOAT_ROUND_CURRENT) { \
+ fpscr_set_rounding_mode(env); \
+ env->fp_status.float_exception_flags &= ~float_flag_inexact; \
+ } \
+ \
+ putVSR(xT(opcode), &xt, env); \
+ helper_float_check_status(env); \
+}
+
+VSX_ROUND(xsrdpi, 1, float64, f64, float_round_nearest_even, 1)
+VSX_ROUND(xsrdpic, 1, float64, f64, FLOAT_ROUND_CURRENT, 1)
+VSX_ROUND(xsrdpim, 1, float64, f64, float_round_down, 1)
+VSX_ROUND(xsrdpip, 1, float64, f64, float_round_up, 1)
+VSX_ROUND(xsrdpiz, 1, float64, f64, float_round_to_zero, 1)
+
+VSX_ROUND(xvrdpi, 2, float64, f64, float_round_nearest_even, 0)
+VSX_ROUND(xvrdpic, 2, float64, f64, FLOAT_ROUND_CURRENT, 0)
+VSX_ROUND(xvrdpim, 2, float64, f64, float_round_down, 0)
+VSX_ROUND(xvrdpip, 2, float64, f64, float_round_up, 0)
+VSX_ROUND(xvrdpiz, 2, float64, f64, float_round_to_zero, 0)
+
+VSX_ROUND(xvrspi, 4, float32, f32, float_round_nearest_even, 0)
+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)
diff --git a/target-ppc/helper.h b/target-ppc/helper.h
index 20d7bb4..ea5d9bc 100644
--- a/target-ppc/helper.h
+++ b/target-ppc/helper.h
@@ -280,6 +280,11 @@ DEF_HELPER_2(xscvdpuxds, void, env, i32)
DEF_HELPER_2(xscvdpuxws, void, env, i32)
DEF_HELPER_2(xscvsxddp, void, env, i32)
DEF_HELPER_2(xscvuxddp, void, env, i32)
+DEF_HELPER_2(xsrdpi, void, env, i32)
+DEF_HELPER_2(xsrdpic, void, env, i32)
+DEF_HELPER_2(xsrdpim, void, env, i32)
+DEF_HELPER_2(xsrdpip, void, env, i32)
+DEF_HELPER_2(xsrdpiz, void, env, i32)
DEF_HELPER_2(xvadddp, void, env, i32)
DEF_HELPER_2(xvsubdp, void, env, i32)
@@ -312,6 +317,11 @@ DEF_HELPER_2(xvcvsxddp, void, env, i32)
DEF_HELPER_2(xvcvuxddp, void, env, i32)
DEF_HELPER_2(xvcvsxwdp, void, env, i32)
DEF_HELPER_2(xvcvuxwdp, void, env, i32)
+DEF_HELPER_2(xvrdpi, void, env, i32)
+DEF_HELPER_2(xvrdpic, void, env, i32)
+DEF_HELPER_2(xvrdpim, void, env, i32)
+DEF_HELPER_2(xvrdpip, void, env, i32)
+DEF_HELPER_2(xvrdpiz, void, env, i32)
DEF_HELPER_2(xvaddsp, void, env, i32)
DEF_HELPER_2(xvsubsp, void, env, i32)
@@ -344,6 +354,11 @@ DEF_HELPER_2(xvcvsxdsp, void, env, i32)
DEF_HELPER_2(xvcvuxdsp, void, env, i32)
DEF_HELPER_2(xvcvsxwsp, void, env, i32)
DEF_HELPER_2(xvcvuxwsp, void, env, i32)
+DEF_HELPER_2(xvrspi, void, env, i32)
+DEF_HELPER_2(xvrspic, void, env, i32)
+DEF_HELPER_2(xvrspim, void, env, i32)
+DEF_HELPER_2(xvrspip, void, env, i32)
+DEF_HELPER_2(xvrspiz, 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 dbe3953..58a9242 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -7322,6 +7322,11 @@ GEN_VSX_HELPER_2(xscvdpuxds, 0x10, 0x14, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xscvdpuxws, 0x10, 0x04, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xscvsxddp, 0x10, 0x17, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xscvuxddp, 0x10, 0x16, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xsrdpi, 0x12, 0x04, 0, PPC2_VSX)
+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_2(xvadddp, 0x00, 0x0C, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvsubdp, 0x00, 0x0D, 0, PPC2_VSX)
@@ -7354,6 +7359,11 @@ GEN_VSX_HELPER_2(xvcvsxddp, 0x10, 0x1F, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvcvuxddp, 0x10, 0x1E, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvcvsxwdp, 0x10, 0x0F, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvcvuxwdp, 0x10, 0x0E, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvrdpi, 0x12, 0x0C, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvrdpic, 0x16, 0x0E, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvrdpim, 0x12, 0x0F, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvrdpip, 0x12, 0x0E, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvrdpiz, 0x12, 0x0D, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvaddsp, 0x00, 0x08, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvsubsp, 0x00, 0x09, 0, PPC2_VSX)
@@ -7386,6 +7396,11 @@ GEN_VSX_HELPER_2(xvcvsxdsp, 0x10, 0x1B, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvcvuxdsp, 0x10, 0x1A, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvcvsxwsp, 0x10, 0x0B, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xvcvuxwsp, 0x10, 0x0A, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvrspi, 0x12, 0x08, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvrspic, 0x16, 0x0A, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvrspim, 0x12, 0x0B, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvrspip, 0x12, 0x0A, 0, PPC2_VSX)
+GEN_VSX_HELPER_2(xvrspiz, 0x12, 0x09, 0, PPC2_VSX)
#define VSX_LOGICAL(name, tcg_op) \
static void glue(gen_, name)(DisasContext * ctx) \
@@ -10109,6 +10124,11 @@ GEN_XX2FORM(xscvdpuxds, 0x10, 0x14, PPC2_VSX),
GEN_XX2FORM(xscvdpuxws, 0x10, 0x04, PPC2_VSX),
GEN_XX2FORM(xscvsxddp, 0x10, 0x17, PPC2_VSX),
GEN_XX2FORM(xscvuxddp, 0x10, 0x16, PPC2_VSX),
+GEN_XX2FORM(xsrdpi, 0x12, 0x04, PPC2_VSX),
+GEN_XX2FORM(xsrdpic, 0x16, 0x06, PPC2_VSX),
+GEN_XX2FORM(xsrdpim, 0x12, 0x07, PPC2_VSX),
+GEN_XX2FORM(xsrdpip, 0x12, 0x06, PPC2_VSX),
+GEN_XX2FORM(xsrdpiz, 0x12, 0x05, PPC2_VSX),
GEN_XX3FORM(xvadddp, 0x00, 0x0C, PPC2_VSX),
GEN_XX3FORM(xvsubdp, 0x00, 0x0D, PPC2_VSX),
@@ -10141,6 +10161,11 @@ GEN_XX2FORM(xvcvsxddp, 0x10, 0x1F, PPC2_VSX),
GEN_XX2FORM(xvcvuxddp, 0x10, 0x1E, PPC2_VSX),
GEN_XX2FORM(xvcvsxwdp, 0x10, 0x0F, PPC2_VSX),
GEN_XX2FORM(xvcvuxwdp, 0x10, 0x0E, PPC2_VSX),
+GEN_XX2FORM(xvrdpi, 0x12, 0x0C, PPC2_VSX),
+GEN_XX2FORM(xvrdpic, 0x16, 0x0E, PPC2_VSX),
+GEN_XX2FORM(xvrdpim, 0x12, 0x0F, PPC2_VSX),
+GEN_XX2FORM(xvrdpip, 0x12, 0x0E, PPC2_VSX),
+GEN_XX2FORM(xvrdpiz, 0x12, 0x0D, PPC2_VSX),
GEN_XX3FORM(xvaddsp, 0x00, 0x08, PPC2_VSX),
GEN_XX3FORM(xvsubsp, 0x00, 0x09, PPC2_VSX),
@@ -10173,6 +10198,11 @@ GEN_XX2FORM(xvcvsxdsp, 0x10, 0x1B, PPC2_VSX),
GEN_XX2FORM(xvcvuxdsp, 0x10, 0x1A, PPC2_VSX),
GEN_XX2FORM(xvcvsxwsp, 0x10, 0x0B, PPC2_VSX),
GEN_XX2FORM(xvcvuxwsp, 0x10, 0x0A, PPC2_VSX),
+GEN_XX2FORM(xvrspi, 0x12, 0x08, PPC2_VSX),
+GEN_XX2FORM(xvrspic, 0x16, 0x0A, PPC2_VSX),
+GEN_XX2FORM(xvrspim, 0x12, 0x0B, PPC2_VSX),
+GEN_XX2FORM(xvrspip, 0x12, 0x0A, PPC2_VSX),
+GEN_XX2FORM(xvrspiz, 0x12, 0x09, PPC2_VSX),
#undef VSX_LOGICAL
#define VSX_LOGICAL(name, opc2, opc3, fl2) \
--
1.7.1
- Re: [Qemu-devel] [PATCH 13/19] Add VSX ISA2.06 Multiply Add Instructions, (continued)
- [Qemu-devel] [PATCH 14/19] Add VSX xscmp*dp Instructions, Tom Musta, 2013/10/24
- [Qemu-devel] [PATCH 15/19] Add VSX xmax/xmin Instructions, Tom Musta, 2013/10/24
- [Qemu-devel] [PATCH 16/19] Add VSX Vector Compare Instructions, Tom Musta, 2013/10/24
- [Qemu-devel] [PATCH 17/19] Add VSX Floating Point to Floating Point Conversion Instructions, Tom Musta, 2013/10/24
- [Qemu-devel] [PATCH 18/19] Add VSX ISA2.06 Integer Conversion Instructions, Tom Musta, 2013/10/24
- [Qemu-devel] [PATCH 19/19] Add VSX Rounding Instructions,
Tom Musta <=