diff mbox series

[05/16] tcg/s390x: Implement tcg_out_ld/st for vector types

Message ID 20201225201956.692861-6-richard.henderson@linaro.org (mailing list archive)
State New, archived
Headers show
Series tcg/s390x: host vector support | expand

Commit Message

Richard Henderson Dec. 25, 2020, 8:19 p.m. UTC 
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/s390x/tcg-target.c.inc | 117 +++++++++++++++++++++++++++++++++----
 1 file changed, 105 insertions(+), 12 deletions(-)
diff mbox series

Patch

diff --git a/tcg/s390x/tcg-target.c.inc b/tcg/s390x/tcg-target.c.inc
index 6140385e4e..bae70b9119 100644
--- a/tcg/s390x/tcg-target.c.inc
+++ b/tcg/s390x/tcg-target.c.inc
@@ -250,6 +250,12 @@  typedef enum S390Opcode {
     RX_STC      = 0x42,
     RX_STH      = 0x40,
 
+    VRX_VL      = 0xe706,
+    VRX_VLLEZ   = 0xe704,
+    VRX_VST     = 0xe70e,
+    VRX_VSTEF   = 0xe70b,
+    VRX_VSTEG   = 0xe70a,
+
     NOP         = 0x0707,
 } S390Opcode;
 
@@ -516,6 +522,26 @@  static void tcg_out_insn_RSY(TCGContext *s, S390Opcode op, TCGReg r1,
 #define tcg_out_insn_RX   tcg_out_insn_RS
 #define tcg_out_insn_RXY  tcg_out_insn_RSY
 
+static int RXB(TCGReg v1, TCGReg v2, TCGReg v3, TCGReg v4)
+{
+    return ((v1 & 16) << (7 - 3))
+         | ((v2 & 16) << (6 - 3))
+         | ((v3 & 16) << (5 - 3))
+         | ((v4 & 16) << (4 - 3));
+}
+
+static void tcg_out_insn_VRX(TCGContext *s, S390Opcode op, TCGReg v1,
+                             TCGReg b2, TCGReg x2, intptr_t d2, int m3)
+{
+    tcg_debug_assert(v1 >= TCG_REG_V0 && v1 <= TCG_REG_V31);
+    tcg_debug_assert(d2 >= 0 && d2 <= 0xfff);
+    tcg_debug_assert(x2 <= TCG_REG_R15);
+    tcg_debug_assert(b2 <= TCG_REG_R15);
+    tcg_out16(s, (op & 0xff00) | ((v1 & 15) << 4) | x2);
+    tcg_out16(s, (b2 << 12) | d2);
+    tcg_out16(s, (op & 0x00ff) | RXB(v1, 0, 0, 0) | (m3 << 12));
+}
+
 /* Emit an opcode with "type-checking" of the format.  */
 #define tcg_out_insn(S, FMT, OP, ...) \
     glue(tcg_out_insn_,FMT)(S, glue(glue(FMT,_),OP), ## __VA_ARGS__)
@@ -692,25 +718,92 @@  static void tcg_out_mem(TCGContext *s, S390Opcode opc_rx, S390Opcode opc_rxy,
     }
 }
 
+static void tcg_out_vrx_mem(TCGContext *s, S390Opcode opc_vrx,
+                            TCGReg data, TCGReg base, TCGReg index,
+                            tcg_target_long ofs, int m3)
+{
+    if (ofs < 0 || ofs >= 0x1000) {
+        if (ofs >= -0x80000 && ofs < 0x80000) {
+            tcg_out_insn(s, RXY, LAY, TCG_TMP0, base, index, ofs);
+            base = TCG_TMP0;
+            index = TCG_REG_NONE;
+            ofs = 0;
+        } else {
+            tcg_out_movi(s, TCG_TYPE_PTR, TCG_TMP0, ofs);
+            if (index != TCG_REG_NONE) {
+                tcg_out_insn(s, RRE, AGR, TCG_TMP0, index);
+            }
+            index = TCG_TMP0;
+            ofs = 0;
+        }
+    }
+    tcg_out_insn_VRX(s, opc_vrx, data, base, index, ofs, m3);
+}
 
 /* load data without address translation or endianness conversion */
-static inline void tcg_out_ld(TCGContext *s, TCGType type, TCGReg data,
-                              TCGReg base, intptr_t ofs)
+static void tcg_out_ld(TCGContext *s, TCGType type, TCGReg data,
+                       TCGReg base, intptr_t ofs)
 {
-    if (type == TCG_TYPE_I32) {
-        tcg_out_mem(s, RX_L, RXY_LY, data, base, TCG_REG_NONE, ofs);
-    } else {
-        tcg_out_mem(s, 0, RXY_LG, data, base, TCG_REG_NONE, ofs);
+    switch (type) {
+    case TCG_TYPE_I32:
+        if (likely(data < 16)) {
+            tcg_out_mem(s, RX_L, RXY_LY, data, base, TCG_REG_NONE, ofs);
+            break;
+        }
+        tcg_out_vrx_mem(s, VRX_VLLEZ, data, base, TCG_REG_NONE, ofs, MO_32);
+        break;
+
+    case TCG_TYPE_I64:
+        if (likely(data < 16)) {
+            tcg_out_mem(s, 0, RXY_LG, data, base, TCG_REG_NONE, ofs);
+            break;
+        }
+        /* fallthru */
+
+    case TCG_TYPE_V64:
+        tcg_out_vrx_mem(s, VRX_VLLEZ, data, base, TCG_REG_NONE, ofs, MO_64);
+        break;
+
+    case TCG_TYPE_V128:
+        /* Hint quadword aligned.  */
+        tcg_out_vrx_mem(s, VRX_VL, data, base, TCG_REG_NONE, ofs, 4);
+        break;
+
+    default:
+        g_assert_not_reached();
     }
 }
 
-static inline void tcg_out_st(TCGContext *s, TCGType type, TCGReg data,
-                              TCGReg base, intptr_t ofs)
+static void tcg_out_st(TCGContext *s, TCGType type, TCGReg data,
+                       TCGReg base, intptr_t ofs)
 {
-    if (type == TCG_TYPE_I32) {
-        tcg_out_mem(s, RX_ST, RXY_STY, data, base, TCG_REG_NONE, ofs);
-    } else {
-        tcg_out_mem(s, 0, RXY_STG, data, base, TCG_REG_NONE, ofs);
+    switch (type) {
+    case TCG_TYPE_I32:
+        if (likely(data < 16)) {
+            tcg_out_mem(s, RX_ST, RXY_STY, data, base, TCG_REG_NONE, ofs);
+        } else {
+            tcg_out_vrx_mem(s, VRX_VSTEF, data, base, TCG_REG_NONE, ofs, 1);
+        }
+        break;
+
+    case TCG_TYPE_I64:
+        if (likely(data < 16)) {
+            tcg_out_mem(s, 0, RXY_STG, data, base, TCG_REG_NONE, ofs);
+            break;
+        }
+        /* fallthru */
+
+    case TCG_TYPE_V64:
+        tcg_out_vrx_mem(s, VRX_VSTEG, data, base, TCG_REG_NONE, ofs, 0);
+        break;
+
+    case TCG_TYPE_V128:
+        /* Hint quadword aligned.  */
+        tcg_out_vrx_mem(s, VRX_VST, data, base, TCG_REG_NONE, ofs, 4);
+        break;
+
+    default:
+        g_assert_not_reached();
     }
 }