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[v3,140/162] tcg/s390x: Implement add/sub carry opcodes

Message ID 20250216231012.2808572-141-richard.henderson@linaro.org (mailing list archive)
State New
Headers show
Series tcg: Convert to TCGOutOp structures | expand

Commit Message

Richard Henderson Feb. 16, 2025, 11:09 p.m. UTC 
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/s390x/tcg-target-con-set.h |   2 +
 tcg/s390x/tcg-target.c.inc     | 103 ++++++++++++++++++++++++++++-----
 2 files changed, 92 insertions(+), 13 deletions(-)
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Patch

diff --git a/tcg/s390x/tcg-target-con-set.h b/tcg/s390x/tcg-target-con-set.h
index f5d3878070..0a991f6d5d 100644
--- a/tcg/s390x/tcg-target-con-set.h
+++ b/tcg/s390x/tcg-target-con-set.h
@@ -22,6 +22,7 @@  C_O1_I1(r, r)
 C_O1_I1(v, r)
 C_O1_I1(v, v)
 C_O1_I1(v, vr)
+C_O1_I2(r, 0, r)
 C_O1_I2(r, 0, ri)
 C_O1_I2(r, 0, rI)
 C_O1_I2(r, 0, rJ)
@@ -32,6 +33,7 @@  C_O1_I2(r, r, rI)
 C_O1_I2(r, r, rJ)
 C_O1_I2(r, r, rK)
 C_O1_I2(r, r, rNKR)
+C_O1_I2(r, r, rUV)
 C_O1_I2(r, rZ, r)
 C_O1_I2(v, v, r)
 C_O1_I2(v, v, v)
diff --git a/tcg/s390x/tcg-target.c.inc b/tcg/s390x/tcg-target.c.inc
index 9b28083945..2b31ea1c3e 100644
--- a/tcg/s390x/tcg-target.c.inc
+++ b/tcg/s390x/tcg-target.c.inc
@@ -173,6 +173,8 @@  typedef enum S390Opcode {
     RRE_SLBGR   = 0xb989,
     RRE_XGR     = 0xb982,
 
+    RRFa_ALRK   = 0xb9fa,
+    RRFa_ALGRK  = 0xb9ea,
     RRFa_MGRK   = 0xb9ec,
     RRFa_MSRKC  = 0xb9fd,
     RRFa_MSGRKC = 0xb9ed,
@@ -2259,21 +2261,60 @@  static const TCGOutOpBinary outop_add = {
     .out_rri = tgen_addi,
 };
 
+static void tgen_addco_rrr(TCGContext *s, TCGType type,
+                           TCGReg a0, TCGReg a1, TCGReg a2)
+{
+    if (type != TCG_TYPE_I32) {
+        tcg_out_insn(s, RRFa, ALGRK, a0, a1, a2);
+    } else if (a0 == a1) {
+        tcg_out_insn(s, RR, ALR, a0, a2);
+    } else {
+        tcg_out_insn(s, RRFa, ALRK, a0, a1, a2);
+    }
+}
+
+static void tgen_addco_rri(TCGContext *s, TCGType type,
+                           TCGReg a0, TCGReg a1, tcg_target_long a2)
+{
+    tcg_out_mov(s, type, a0, a1);
+    if (type == TCG_TYPE_I32) {
+        tcg_out_insn(s, RIL, ALFI, a0, a2);
+    } else if (a2 >= 0) {
+        tcg_out_insn(s, RIL, ALGFI, a0, a2);
+    } else {
+        tcg_out_insn(s, RIL, SLGFI, a0, -a2);
+    }
+}
+
 static const TCGOutOpBinary outop_addco = {
-    .base.static_constraint = C_NotImplemented,
+    .base.static_constraint = C_O1_I2(r, r, rUV),
+    .out_rrr = tgen_addco_rrr,
+    .out_rri = tgen_addco_rri,
+};
+
+static void tgen_addcio(TCGContext *s, TCGType type,
+                        TCGReg a0, TCGReg a1, TCGReg a2)
+{
+    if (type == TCG_TYPE_I32) {
+        tcg_out_insn(s, RRE, ALCR, a0, a2);
+    } else {
+        tcg_out_insn(s, RRE, ALCGR, a0, a2);
+    }
+}
+
+static const TCGOutOpBinary outop_addcio = {
+    .base.static_constraint = C_O1_I2(r, 0, r),
+    .out_rrr = tgen_addcio,
 };
 
 static const TCGOutOpAddSubCarry outop_addci = {
-    .base.static_constraint = C_NotImplemented,
-};
-
-static const TCGOutOpBinary outop_addcio = {
-    .base.static_constraint = C_NotImplemented,
+    .base.static_constraint = C_O1_I2(r, 0, r),
+    .out_rrr = tgen_addcio,
 };
 
 static void tcg_out_set_carry(TCGContext *s)
 {
-    g_assert_not_reached();
+    tcg_out_insn(s, RR, SLR, TCG_REG_R0, TCG_REG_R0); /* cc = 2 */
 }
 
 static void tgen_and(TCGContext *s, TCGType type,
@@ -2794,21 +2835,57 @@  static const TCGOutOpSubtract outop_sub = {
     .out_rrr = tgen_sub,
 };
 
+static void tgen_subbo_rrr(TCGContext *s, TCGType type,
+                           TCGReg a0, TCGReg a1, TCGReg a2)
+{
+    if (type != TCG_TYPE_I32) {
+        tcg_out_insn(s, RRFa, SLGRK, a0, a1, a2);
+    } else if (a0 == a1) {
+        tcg_out_insn(s, RR, SLR, a0, a2);
+    } else {
+        tcg_out_insn(s, RRFa, SLRK, a0, a1, a2);
+    }
+}
+
+static void tgen_subbo_rri(TCGContext *s, TCGType type,
+                           TCGReg a0, TCGReg a1, tcg_target_long a2)
+{
+    tcg_out_mov(s, type, a0, a1);
+    if (type == TCG_TYPE_I32) {
+        tcg_out_insn(s, RIL, SLFI, a0, a2);
+    } else if (a2 >= 0) {
+        tcg_out_insn(s, RIL, SLGFI, a0, a2);
+    } else {
+        tcg_out_insn(s, RIL, ALGFI, a0, -a2);
+    }
+}
+
 static const TCGOutOpAddSubCarry outop_subbo = {
-    .base.static_constraint = C_NotImplemented,
+    .base.static_constraint = C_O1_I2(r, r, rUV),
+    .out_rrr = tgen_subbo_rrr,
+    .out_rri = tgen_subbo_rri,
 };
 
-static const TCGOutOpAddSubCarry outop_subbi = {
-    .base.static_constraint = C_NotImplemented,
-};
+static void tgen_subbio(TCGContext *s, TCGType type,
+                        TCGReg a0, TCGReg a1, TCGReg a2)
+{
+    if (type == TCG_TYPE_I32) {
+        tcg_out_insn(s, RRE, SLBR, a0, a2);
+    } else {
+        tcg_out_insn(s, RRE, SLBGR, a0, a2);
+    }
+}
 
 static const TCGOutOpAddSubCarry outop_subbio = {
-    .base.static_constraint = C_NotImplemented,
+    .base.static_constraint = C_O1_I2(r, 0, r),
+    .out_rrr = tgen_subbio,
 };
 
+#define outop_subbi  outop_subbio
+
 static void tcg_out_set_borrow(TCGContext *s)
 {
-    g_assert_not_reached();
+    tcg_out_insn(s, RR, CLR, TCG_REG_R0, TCG_REG_R0); /* cc = 0 */
 }
 
 static void tgen_xor(TCGContext *s, TCGType type,