Split TLB addend and target_phys_addr_t

Historically the qemu tlb "addend" field was used for both RAM and IO accesses,
so needed to be able to hold both host addresses (unsigned long) and guest
physical addresses (target_phys_addr_t).  However since the introduction of
the iotlb field it has only been used for RAM accesses.

This means we can change the type of addend to unsigned long, and remove
associated hacks in the big-endian TCG backends.

We can also remove the host dependence from target_phys_addr_t.

Signed-off-by: Paul Brook <paul@codesourcery.com>

4 files changed, 7 insertions, 29 deletions

diff --git a/tcg/mips/tcg-target.c b/tcg/mips/tcg-target.c
index 10b9fc1db8..351efb1013 100644
--- a/tcg/mips/tcg-target.c
+++ b/tcg/mips/tcg-target.c
@@ -867,7 +867,7 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args,
     reloc_pc16(label1_ptr, (tcg_target_long) s->code_ptr);
 
     tcg_out_opc_imm(s, OPC_LW, TCG_REG_A0, TCG_REG_A0,
-                    offsetof(CPUState, tlb_table[mem_index][0].addend) + addr_meml);
+                    offsetof(CPUState, tlb_table[mem_index][0].addend));
     tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_V0, TCG_REG_A0, addr_regl);
 #else
     if (GUEST_BASE == (int16_t)GUEST_BASE) {
@@ -1054,7 +1054,7 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args,
     reloc_pc16(label1_ptr, (tcg_target_long) s->code_ptr);
 
     tcg_out_opc_imm(s, OPC_LW, TCG_REG_A0, TCG_REG_A0,
-                    offsetof(CPUState, tlb_table[mem_index][0].addend) + addr_meml);
+                    offsetof(CPUState, tlb_table[mem_index][0].addend));
     tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_A0, TCG_REG_A0, addr_regl);
 #else
     if (GUEST_BASE == (int16_t)GUEST_BASE) {
diff --git a/tcg/ppc/tcg-target.c b/tcg/ppc/tcg-target.c
index 18fdd273b6..609035a076 100644
--- a/tcg/ppc/tcg-target.c
+++ b/tcg/ppc/tcg-target.c
@@ -37,14 +37,6 @@ static uint8_t *tb_ret_addr;
 
 #define FAST_PATH
 
-#ifdef CONFIG_SOFTMMU
-#if TARGET_PHYS_ADDR_BITS <= 32
-#define ADDEND_OFFSET 0
-#else
-#define ADDEND_OFFSET 4
-#endif
-#endif
-
 #ifndef GUEST_BASE
 #define GUEST_BASE 0
 #endif
@@ -648,7 +640,7 @@ static void tcg_out_qemu_ld (TCGContext *s, const TCGArg *args, int opc)
     tcg_out32 (s, (LWZ
                    | RT (r0)
                    | RA (r0)
-                   | (ADDEND_OFFSET + offsetof (CPUTLBEntry, addend)
+                   | (offsetof (CPUTLBEntry, addend)
                       - offsetof (CPUTLBEntry, addr_read))
                    ));
     /* r0 = env->tlb_table[mem_index][index].addend */
@@ -847,7 +839,7 @@ static void tcg_out_qemu_st (TCGContext *s, const TCGArg *args, int opc)
     tcg_out32 (s, (LWZ
                    | RT (r0)
                    | RA (r0)
-                   | (ADDEND_OFFSET + offsetof (CPUTLBEntry, addend)
+                   | (offsetof (CPUTLBEntry, addend)
                       - offsetof (CPUTLBEntry, addr_write))
                    ));
     /* r0 = env->tlb_table[mem_index][index].addend */
diff --git a/tcg/ppc64/tcg-target.c b/tcg/ppc64/tcg-target.c
index 4d6e68c306..2725c6e165 100644
--- a/tcg/ppc64/tcg-target.c
+++ b/tcg/ppc64/tcg-target.c
@@ -28,14 +28,6 @@ static uint8_t *tb_ret_addr;
 
 #define FAST_PATH
 
-#ifdef CONFIG_SOFTMMU
-#if TARGET_PHYS_ADDR_BITS == 32
-#define LD_ADDEND LWZ
-#else
-#define LD_ADDEND LD
-#endif
-#endif
-
 #if TARGET_LONG_BITS == 32
 #define LD_ADDR LWZU
 #define CMP_L 0
@@ -684,7 +676,7 @@ static void tcg_out_qemu_ld (TCGContext *s, const TCGArg *args, int opc)
 #endif
 
     /* r0 now contains &env->tlb_table[mem_index][index].addr_read */
-    tcg_out32 (s, (LD_ADDEND
+    tcg_out32 (s, (LD
                    | RT (r0)
                    | RA (r0)
                    | (offsetof (CPUTLBEntry, addend)
@@ -812,7 +804,7 @@ static void tcg_out_qemu_st (TCGContext *s, const TCGArg *args, int opc)
     reloc_pc14 (label1_ptr, (tcg_target_long) s->code_ptr);
 #endif
 
-    tcg_out32 (s, (LD_ADDEND
+    tcg_out32 (s, (LD
                    | RT (r0)
                    | RA (r0)
                    | (offsetof (CPUTLBEntry, addend)
diff --git a/tcg/sparc/tcg-target.c b/tcg/sparc/tcg-target.c
index 6d8410c65c..e460d44257 100644
--- a/tcg/sparc/tcg-target.c
+++ b/tcg/sparc/tcg-target.c
@@ -726,13 +726,7 @@ static const void * const qemu_st_helpers[4] = {
 #endif
 
 #if defined(CONFIG_SOFTMMU)
-#if TARGET_PHYS_ADDR_BITS == 32
-#define TARGET_ADDEND_LD_OP LDUW
-#else
-#define TARGET_ADDEND_LD_OP LDX
-#endif
-#else
-#if TARGET_ABI_BITS == 32
+#if HOST_LONG_BITS == 32
 #define TARGET_ADDEND_LD_OP LDUW
 #else
 #define TARGET_ADDEND_LD_OP LDX