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[Qemu-ppc] [PULL 021/130] target-ppc: Add VSX ISA2.06 xdiv Instructions
From: |
Alexander Graf |
Subject: |
[Qemu-ppc] [PULL 021/130] target-ppc: Add VSX ISA2.06 xdiv Instructions |
Date: |
Fri, 7 Mar 2014 00:32:28 +0100 |
From: Tom Musta <address@hidden>
This patch adds the VSX floating point divide instructions defined
by V2.06 of the PowerPC ISA: xsdivdp, xvdivdp, xvdivsp.
Signed-off-by: Tom Musta <address@hidden>
Reviewed-by: Richard Henderson <address@hidden>
Signed-off-by: Alexander Graf <address@hidden>
---
target-ppc/fpu_helper.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
target-ppc/helper.h | 3 +++
target-ppc/translate.c | 6 ++++++
3 files changed, 58 insertions(+)
diff --git a/target-ppc/fpu_helper.c b/target-ppc/fpu_helper.c
index 51ca589..c84f432 100644
--- a/target-ppc/fpu_helper.c
+++ b/target-ppc/fpu_helper.c
@@ -1855,3 +1855,52 @@ void helper_##op(CPUPPCState *env, uint32_t opcode)
\
VSX_MUL(xsmuldp, 1, float64, f64, 1)
VSX_MUL(xvmuldp, 2, float64, f64, 0)
VSX_MUL(xvmulsp, 4, float32, f32, 0)
+
+/* VSX_DIV - VSX floating point divide
+ * 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_DIV(op, nels, tp, fld, sfprf) \
+void helper_##op(CPUPPCState *env, uint32_t opcode) \
+{ \
+ ppc_vsr_t xt, xa, xb; \
+ int i; \
+ \
+ getVSR(xA(opcode), &xa, env); \
+ 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##_div(xa.fld[i], 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_infinity(xa.fld[i]) && tp##_is_infinity(xb.fld[i])) { \
+ fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXIDI, sfprf); \
+ } else if (tp##_is_zero(xa.fld[i]) && \
+ tp##_is_zero(xb.fld[i])) { \
+ fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXZDZ, sfprf); \
+ } else if (tp##_is_signaling_nan(xa.fld[i]) || \
+ 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_DIV(xsdivdp, 1, float64, f64, 1)
+VSX_DIV(xvdivdp, 2, float64, f64, 0)
+VSX_DIV(xvdivsp, 4, float32, f32, 0)
diff --git a/target-ppc/helper.h b/target-ppc/helper.h
index ecb900f..6ede7ea 100644
--- a/target-ppc/helper.h
+++ b/target-ppc/helper.h
@@ -254,14 +254,17 @@ DEF_HELPER_4(vctsxs, void, env, avr, avr, i32)
DEF_HELPER_2(xsadddp, void, env, i32)
DEF_HELPER_2(xssubdp, void, env, i32)
DEF_HELPER_2(xsmuldp, void, env, i32)
+DEF_HELPER_2(xsdivdp, 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(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(efscfsi, i32, env, i32)
DEF_HELPER_2(efscfui, i32, env, i32)
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index bf15f91..076574e 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -7307,14 +7307,17 @@ static void gen_##name(DisasContext * ctx)
\
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)
+GEN_VSX_HELPER_2(xsdivdp, 0x00, 0x07, 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(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)
#define VSX_LOGICAL(name, tcg_op) \
static void glue(gen_, name)(DisasContext * ctx) \
@@ -10000,14 +10003,17 @@ GEN_XX3FORM(xvcpsgnsp, 0x00, 0x1A, PPC2_VSX),
GEN_XX3FORM(xsadddp, 0x00, 0x04, PPC2_VSX),
GEN_XX3FORM(xssubdp, 0x00, 0x05, PPC2_VSX),
GEN_XX3FORM(xsmuldp, 0x00, 0x06, PPC2_VSX),
+GEN_XX3FORM(xsdivdp, 0x00, 0x07, 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_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),
#undef VSX_LOGICAL
#define VSX_LOGICAL(name, opc2, opc3, fl2) \
--
1.8.1.4
- [Qemu-ppc] [PULL 005/130] target-ppc: remove embedded MMU SPRs from 970, P5+/7/7+/8, (continued)
- [Qemu-ppc] [PULL 005/130] target-ppc: remove embedded MMU SPRs from 970, P5+/7/7+/8, Alexander Graf, 2014/03/06
- [Qemu-ppc] [PULL 006/130] target-ppc: remove unsupported SPRs from 970 and P5+, Alexander Graf, 2014/03/06
- [Qemu-ppc] [PULL 007/130] KVM: Split QEMUMachine typedef into separate header, Alexander Graf, 2014/03/06
- [Qemu-ppc] [PULL 016/130] target-ppc: disable unsupported modes for SPR_CTRL/SPR_UCTRL, Alexander Graf, 2014/03/06
- [Qemu-ppc] [PULL 014/130] spapr-pci: enable adding PHB via -device, Alexander Graf, 2014/03/06
- [Qemu-ppc] [PULL 012/130] PPC: KVM: fix "set one register", Alexander Graf, 2014/03/06
- [Qemu-ppc] [PULL 027/130] target-ppc: Add VSX ISA2.06 Multiply Add Instructions, Alexander Graf, 2014/03/06
- [Qemu-ppc] [PULL 019/130] target-ppc: Add VSX ISA2.06 xadd/xsub Instructions, Alexander Graf, 2014/03/06
- [Qemu-ppc] [PULL 011/130] mmu-hash64: fix Virtual Page Class Key Protection, Alexander Graf, 2014/03/06
- [Qemu-ppc] [PULL 021/130] target-ppc: Add VSX ISA2.06 xdiv Instructions,
Alexander Graf <=
- [Qemu-ppc] [PULL 004/130] target-ppc: fix SPR_CTRL/SPR_UCTRL register numbers, Alexander Graf, 2014/03/06
- [Qemu-ppc] [PULL 031/130] target-ppc: Add VSX Floating Point to Floating Point Conversion Instructions, Alexander Graf, 2014/03/06
- [Qemu-ppc] [PULL 032/130] target-ppc: Add VSX ISA2.06 Integer Conversion Instructions, Alexander Graf, 2014/03/06
- [Qemu-ppc] [PULL 048/130] target-ppc: Move To/From VSR Instructions, Alexander Graf, 2014/03/06
- [Qemu-ppc] [PULL 055/130] target-ppc: Add ISA2.06 divde[o] Instructions, Alexander Graf, 2014/03/06
- [Qemu-ppc] [PULL 053/130] target-ppc: Add Flag for ISA2.06 Divide Extended Instructions, Alexander Graf, 2014/03/06
- [Qemu-ppc] [PULL 052/130] target-ppc: Add ISA2.06 bpermd Instruction, Alexander Graf, 2014/03/06
- [Qemu-ppc] [PULL 068/130] target-ppc: Enable frsqrtes on Power7 and Power8, Alexander Graf, 2014/03/06
- [Qemu-ppc] [PULL 069/130] target-ppc: Add ISA2.06 lfiwzx Instruction, Alexander Graf, 2014/03/06
- [Qemu-ppc] [PULL 054/130] target-ppc: Add ISA2.06 divdeu[o] Instructions, Alexander Graf, 2014/03/06