[PATCH v2 22/54] tcg/arm: Rationalize args to tcg_out_qemu_{ld,st}

[Richard Henderson <richard.henderson@linaro.org>]

Interpret the variable argument placement in the caller.
Mark the argument registers const, because they must be passed to
add_qemu_ldst_label unmodified.

Pass data_type instead of is_64.  We need to set this in
TCGLabelQemuLdst, so plumb this all the way through from tcg_out_op.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/arm/tcg-target.c.inc | 115 ++++++++++++++++++++-------------------
 1 file changed, 58 insertions(+), 57 deletions(-)

diff --git a/tcg/arm/tcg-target.c.inc b/tcg/arm/tcg-target.c.inc
index 83c818a58b..3706a3b93e 100644
--- a/tcg/arm/tcg-target.c.inc
+++ b/tcg/arm/tcg-target.c.inc
@@ -1526,15 +1526,18 @@ static TCGReg tcg_out_tlb_read(TCGContext *s, TCGReg addrlo, TCGReg addrhi,
 /* Record the context of a call to the out of line helper code for the slow
    path for a load or store, so that we can later generate the correct
    helper code.  */
-static void add_qemu_ldst_label(TCGContext *s, bool is_ld, MemOpIdx oi,
-                                TCGReg datalo, TCGReg datahi, TCGReg addrlo,
-                                TCGReg addrhi, tcg_insn_unit *raddr,
+static void add_qemu_ldst_label(TCGContext *s, bool is_ld,
+                                MemOpIdx oi, TCGType type,
+                                TCGReg datalo, TCGReg datahi,
+                                TCGReg addrlo, TCGReg addrhi,
+                                tcg_insn_unit *raddr,
                                 tcg_insn_unit *label_ptr)
 {
     TCGLabelQemuLdst *label = new_ldst_label(s);
 
     label->is_ld = is_ld;
     label->oi = oi;
+    label->type = type;
     label->datalo_reg = datalo;
     label->datahi_reg = datahi;
     label->addrlo_reg = addrlo;
@@ -1796,41 +1799,29 @@ static void tcg_out_qemu_ld_direct(TCGContext *s, MemOp opc, TCGReg datalo,
 }
 #endif
 
-static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, bool is64)
+static void tcg_out_qemu_ld(TCGContext *s,
+                            const TCGReg datalo, const TCGReg datahi,
+                            const TCGReg addrlo, const TCGReg addrhi,
+                            const MemOpIdx oi, TCGType data_type)
 {
-    TCGReg addrlo, datalo, datahi, addrhi __attribute__((unused));
-    MemOpIdx oi;
-    MemOp opc;
-#ifdef CONFIG_SOFTMMU
-    int mem_index;
-    TCGReg addend;
-    tcg_insn_unit *label_ptr;
-#else
-    unsigned a_bits;
-#endif
-
-    datalo = *args++;
-    datahi = (is64 ? *args++ : 0);
-    addrlo = *args++;
-    addrhi = (TARGET_LONG_BITS == 64 ? *args++ : 0);
-    oi = *args++;
-    opc = get_memop(oi);
+    MemOp opc = get_memop(oi);
 
 #ifdef CONFIG_SOFTMMU
-    mem_index = get_mmuidx(oi);
-    addend = tcg_out_tlb_read(s, addrlo, addrhi, opc, mem_index, 1);
+    TCGReg addend= tcg_out_tlb_read(s, addrlo, addrhi, opc, get_mmuidx(oi), 1);
 
-    /* This a conditional BL only to load a pointer within this opcode into LR
-       for the slow path.  We will not be using the value for a tail call.  */
-    label_ptr = s->code_ptr;
+    /*
+     * This a conditional BL only to load a pointer within this opcode into
+     * LR for the slow path.  We will not be using the value for a tail call.
+     */
+    tcg_insn_unit *label_ptr = s->code_ptr;
     tcg_out_bl_imm(s, COND_NE, 0);
 
     tcg_out_qemu_ld_index(s, opc, datalo, datahi, addrlo, addend, true);
 
-    add_qemu_ldst_label(s, true, oi, datalo, datahi, addrlo, addrhi,
-                        s->code_ptr, label_ptr);
+    add_qemu_ldst_label(s, true, oi, data_type, datalo, datahi,
+                        addrlo, addrhi, s->code_ptr, label_ptr);
 #else /* !CONFIG_SOFTMMU */
-    a_bits = get_alignment_bits(opc);
+    unsigned a_bits = get_alignment_bits(opc);
     if (a_bits) {
         tcg_out_test_alignment(s, true, addrlo, addrhi, a_bits);
     }
@@ -1918,41 +1909,27 @@ static void tcg_out_qemu_st_direct(TCGContext *s, MemOp opc, TCGReg datalo,
 }
 #endif
 
-static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, bool is64)
+static void tcg_out_qemu_st(TCGContext *s,
+                            const TCGReg datalo, const TCGReg datahi,
+                            const TCGReg addrlo, const TCGReg addrhi,
+                            const MemOpIdx oi, TCGType data_type)
 {
-    TCGReg addrlo, datalo, datahi, addrhi __attribute__((unused));
-    MemOpIdx oi;
-    MemOp opc;
-#ifdef CONFIG_SOFTMMU
-    int mem_index;
-    TCGReg addend;
-    tcg_insn_unit *label_ptr;
-#else
-    unsigned a_bits;
-#endif
-
-    datalo = *args++;
-    datahi = (is64 ? *args++ : 0);
-    addrlo = *args++;
-    addrhi = (TARGET_LONG_BITS == 64 ? *args++ : 0);
-    oi = *args++;
-    opc = get_memop(oi);
+    MemOp opc = get_memop(oi);
 
 #ifdef CONFIG_SOFTMMU
-    mem_index = get_mmuidx(oi);
-    addend = tcg_out_tlb_read(s, addrlo, addrhi, opc, mem_index, 0);
+    TCGReg addend = tcg_out_tlb_read(s, addrlo, addrhi, opc, get_mmuidx(oi), 0);
 
     tcg_out_qemu_st_index(s, COND_EQ, opc, datalo, datahi,
                           addrlo, addend, true);
 
     /* The conditional call must come last, as we're going to return here.  */
-    label_ptr = s->code_ptr;
+    tcg_insn_unit *label_ptr = s->code_ptr;
     tcg_out_bl_imm(s, COND_NE, 0);
 
-    add_qemu_ldst_label(s, false, oi, datalo, datahi, addrlo, addrhi,
-                        s->code_ptr, label_ptr);
+    add_qemu_ldst_label(s, false, oi, data_type, datalo, datahi,
+                        addrlo, addrhi, s->code_ptr, label_ptr);
 #else /* !CONFIG_SOFTMMU */
-    a_bits = get_alignment_bits(opc);
+    unsigned a_bits = get_alignment_bits(opc);
     if (a_bits) {
         tcg_out_test_alignment(s, false, addrlo, addrhi, a_bits);
     }
@@ -2245,16 +2222,40 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
         break;
 
     case INDEX_op_qemu_ld_i32:
-        tcg_out_qemu_ld(s, args, 0);
+        if (TARGET_LONG_BITS == 32) {
+            tcg_out_qemu_ld(s, args[0], -1, args[1], -1,
+                            args[2], TCG_TYPE_I32);
+        } else {
+            tcg_out_qemu_ld(s, args[0], -1, args[1], args[2],
+                            args[3], TCG_TYPE_I32);
+        }
         break;
     case INDEX_op_qemu_ld_i64:
-        tcg_out_qemu_ld(s, args, 1);
+        if (TARGET_LONG_BITS == 32) {
+            tcg_out_qemu_ld(s, args[0], args[1], args[2], -1,
+                            args[3], TCG_TYPE_I64);
+        } else {
+            tcg_out_qemu_ld(s, args[0], args[1], args[2], args[3],
+                            args[4], TCG_TYPE_I64);
+        }
         break;
     case INDEX_op_qemu_st_i32:
-        tcg_out_qemu_st(s, args, 0);
+        if (TARGET_LONG_BITS == 32) {
+            tcg_out_qemu_st(s, args[0], -1, args[1], -1,
+                            args[2], TCG_TYPE_I32);
+        } else {
+            tcg_out_qemu_st(s, args[0], -1, args[1], args[2],
+                            args[3], TCG_TYPE_I32);
+        }
         break;
     case INDEX_op_qemu_st_i64:
-        tcg_out_qemu_st(s, args, 1);
+        if (TARGET_LONG_BITS == 32) {
+            tcg_out_qemu_st(s, args[0], args[1], args[2], -1,
+                            args[3], TCG_TYPE_I64);
+        } else {
+            tcg_out_qemu_st(s, args[0], args[1], args[2], args[3],
+                            args[4], TCG_TYPE_I64);
+        }
         break;
 
     case INDEX_op_bswap16_i32:
-- 
2.34.1