[PATCH v3 24/57] tcg/ppc: Introduce HostAddress

[Richard Henderson]

Collect the parts of the host address into a struct.
Reorg tcg_out_qemu_{ld,st} to use it.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/ppc/tcg-target.c.inc | 90 +++++++++++++++++++++-------------------
 1 file changed, 47 insertions(+), 43 deletions(-)

diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index d1aa2a9f53..cd473deb36 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -2287,67 +2287,71 @@ static bool tcg_out_qemu_st_slow_path(TCGContext *s, 
TCGLabelQemuLdst *l)
 {
     return tcg_out_fail_alignment(s, l);
 }
-
 #endif /* SOFTMMU */
 
+typedef struct {
+    TCGReg base;
+    TCGReg index;
+} HostAddress;
+
 static void tcg_out_qemu_ld(TCGContext *s, TCGReg datalo, TCGReg datahi,
                             TCGReg addrlo, TCGReg addrhi,
                             MemOpIdx oi, TCGType data_type)
 {
     MemOp opc = get_memop(oi);
     MemOp s_bits = opc & MO_SIZE;
-    TCGReg rbase;
+    HostAddress h;
 
 #ifdef CONFIG_SOFTMMU
     tcg_insn_unit *label_ptr;
 
-    addrlo = tcg_out_tlb_read(s, opc, addrlo, addrhi, get_mmuidx(oi), true);
+    h.index = tcg_out_tlb_read(s, opc, addrlo, addrhi, get_mmuidx(oi), true);
+    h.base = TCG_REG_R3;
 
     /* Load a pointer into the current opcode w/conditional branch-link. */
     label_ptr = s->code_ptr;
     tcg_out32(s, BC | BI(7, CR_EQ) | BO_COND_FALSE | LK);
-
-    rbase = TCG_REG_R3;
 #else  /* !CONFIG_SOFTMMU */
     unsigned a_bits = get_alignment_bits(opc);
     if (a_bits) {
         tcg_out_test_alignment(s, true, addrlo, addrhi, a_bits);
     }
-    rbase = guest_base ? TCG_GUEST_BASE_REG : 0;
+    h.base = guest_base ? TCG_GUEST_BASE_REG : 0;
+    h.index = addrlo;
     if (TCG_TARGET_REG_BITS > TARGET_LONG_BITS) {
         tcg_out_ext32u(s, TCG_REG_TMP1, addrlo);
-        addrlo = TCG_REG_TMP1;
+        h.index = TCG_REG_TMP1;
     }
 #endif
 
     if (TCG_TARGET_REG_BITS == 32 && s_bits == MO_64) {
         if (opc & MO_BSWAP) {
-            tcg_out32(s, ADDI | TAI(TCG_REG_R0, addrlo, 4));
-            tcg_out32(s, LWBRX | TAB(datalo, rbase, addrlo));
-            tcg_out32(s, LWBRX | TAB(datahi, rbase, TCG_REG_R0));
-        } else if (rbase != 0) {
-            tcg_out32(s, ADDI | TAI(TCG_REG_R0, addrlo, 4));
-            tcg_out32(s, LWZX | TAB(datahi, rbase, addrlo));
-            tcg_out32(s, LWZX | TAB(datalo, rbase, TCG_REG_R0));
-        } else if (addrlo == datahi) {
-            tcg_out32(s, LWZ | TAI(datalo, addrlo, 4));
-            tcg_out32(s, LWZ | TAI(datahi, addrlo, 0));
+            tcg_out32(s, ADDI | TAI(TCG_REG_R0, h.index, 4));
+            tcg_out32(s, LWBRX | TAB(datalo, h.base, h.index));
+            tcg_out32(s, LWBRX | TAB(datahi, h.base, TCG_REG_R0));
+        } else if (h.base != 0) {
+            tcg_out32(s, ADDI | TAI(TCG_REG_R0, h.index, 4));
+            tcg_out32(s, LWZX | TAB(datahi, h.base, h.index));
+            tcg_out32(s, LWZX | TAB(datalo, h.base, TCG_REG_R0));
+        } else if (h.index == datahi) {
+            tcg_out32(s, LWZ | TAI(datalo, h.index, 4));
+            tcg_out32(s, LWZ | TAI(datahi, h.index, 0));
         } else {
-            tcg_out32(s, LWZ | TAI(datahi, addrlo, 0));
-            tcg_out32(s, LWZ | TAI(datalo, addrlo, 4));
+            tcg_out32(s, LWZ | TAI(datahi, h.index, 0));
+            tcg_out32(s, LWZ | TAI(datalo, h.index, 4));
         }
     } else {
         uint32_t insn = qemu_ldx_opc[opc & (MO_BSWAP | MO_SSIZE)];
         if (!have_isa_2_06 && insn == LDBRX) {
-            tcg_out32(s, ADDI | TAI(TCG_REG_R0, addrlo, 4));
-            tcg_out32(s, LWBRX | TAB(datalo, rbase, addrlo));
-            tcg_out32(s, LWBRX | TAB(TCG_REG_R0, rbase, TCG_REG_R0));
+            tcg_out32(s, ADDI | TAI(TCG_REG_R0, h.index, 4));
+            tcg_out32(s, LWBRX | TAB(datalo, h.base, h.index));
+            tcg_out32(s, LWBRX | TAB(TCG_REG_R0, h.base, TCG_REG_R0));
             tcg_out_rld(s, RLDIMI, datalo, TCG_REG_R0, 32, 0);
         } else if (insn) {
-            tcg_out32(s, insn | TAB(datalo, rbase, addrlo));
+            tcg_out32(s, insn | TAB(datalo, h.base, h.index));
         } else {
             insn = qemu_ldx_opc[opc & (MO_SIZE | MO_BSWAP)];
-            tcg_out32(s, insn | TAB(datalo, rbase, addrlo));
+            tcg_out32(s, insn | TAB(datalo, h.base, h.index));
             tcg_out_movext(s, TCG_TYPE_REG, datalo,
                            TCG_TYPE_REG, opc & MO_SSIZE, datalo);
         }
@@ -2365,52 +2369,52 @@ static void tcg_out_qemu_st(TCGContext *s, TCGReg 
datalo, TCGReg datahi,
 {
     MemOp opc = get_memop(oi);
     MemOp s_bits = opc & MO_SIZE;
-    TCGReg rbase;
+    HostAddress h;
 
 #ifdef CONFIG_SOFTMMU
     tcg_insn_unit *label_ptr;
 
-    addrlo = tcg_out_tlb_read(s, opc, addrlo, addrhi, get_mmuidx(oi), false);
+    h.index = tcg_out_tlb_read(s, opc, addrlo, addrhi, get_mmuidx(oi), false);
+    h.base = TCG_REG_R3;
 
     /* Load a pointer into the current opcode w/conditional branch-link. */
     label_ptr = s->code_ptr;
     tcg_out32(s, BC | BI(7, CR_EQ) | BO_COND_FALSE | LK);
-
-    rbase = TCG_REG_R3;
 #else  /* !CONFIG_SOFTMMU */
     unsigned a_bits = get_alignment_bits(opc);
     if (a_bits) {
         tcg_out_test_alignment(s, false, addrlo, addrhi, a_bits);
     }
-    rbase = guest_base ? TCG_GUEST_BASE_REG : 0;
+    h.base = guest_base ? TCG_GUEST_BASE_REG : 0;
+    h.index = addrlo;
     if (TCG_TARGET_REG_BITS > TARGET_LONG_BITS) {
         tcg_out_ext32u(s, TCG_REG_TMP1, addrlo);
-        addrlo = TCG_REG_TMP1;
+        h.index = TCG_REG_TMP1;
     }
 #endif
 
     if (TCG_TARGET_REG_BITS == 32 && s_bits == MO_64) {
         if (opc & MO_BSWAP) {
-            tcg_out32(s, ADDI | TAI(TCG_REG_R0, addrlo, 4));
-            tcg_out32(s, STWBRX | SAB(datalo, rbase, addrlo));
-            tcg_out32(s, STWBRX | SAB(datahi, rbase, TCG_REG_R0));
-        } else if (rbase != 0) {
-            tcg_out32(s, ADDI | TAI(TCG_REG_R0, addrlo, 4));
-            tcg_out32(s, STWX | SAB(datahi, rbase, addrlo));
-            tcg_out32(s, STWX | SAB(datalo, rbase, TCG_REG_R0));
+            tcg_out32(s, ADDI | TAI(TCG_REG_R0, h.index, 4));
+            tcg_out32(s, STWBRX | SAB(datalo, h.base, h.index));
+            tcg_out32(s, STWBRX | SAB(datahi, h.base, TCG_REG_R0));
+        } else if (h.base != 0) {
+            tcg_out32(s, ADDI | TAI(TCG_REG_R0, h.index, 4));
+            tcg_out32(s, STWX | SAB(datahi, h.base, h.index));
+            tcg_out32(s, STWX | SAB(datalo, h.base, TCG_REG_R0));
         } else {
-            tcg_out32(s, STW | TAI(datahi, addrlo, 0));
-            tcg_out32(s, STW | TAI(datalo, addrlo, 4));
+            tcg_out32(s, STW | TAI(datahi, h.index, 0));
+            tcg_out32(s, STW | TAI(datalo, h.index, 4));
         }
     } else {
         uint32_t insn = qemu_stx_opc[opc & (MO_BSWAP | MO_SIZE)];
         if (!have_isa_2_06 && insn == STDBRX) {
-            tcg_out32(s, STWBRX | SAB(datalo, rbase, addrlo));
-            tcg_out32(s, ADDI | TAI(TCG_REG_TMP1, addrlo, 4));
+            tcg_out32(s, STWBRX | SAB(datalo, h.base, h.index));
+            tcg_out32(s, ADDI | TAI(TCG_REG_TMP1, h.index, 4));
             tcg_out_shri64(s, TCG_REG_R0, datalo, 32);
-            tcg_out32(s, STWBRX | SAB(TCG_REG_R0, rbase, TCG_REG_TMP1));
+            tcg_out32(s, STWBRX | SAB(TCG_REG_R0, h.base, TCG_REG_TMP1));
         } else {
-            tcg_out32(s, insn | SAB(datalo, rbase, addrlo));
+            tcg_out32(s, insn | SAB(datalo, h.base, h.index));
         }
     }
 
-- 
2.34.1