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qemu/0085-tcg-sparc-Fix-qemu_ld-st-to-handle-32-bit-host.patch
Cole Robinson 5544c1b492 Pull patches queued for qemu 1.2.1
2012-10-28 14:05:07 -04:00

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From 138dfa905538bf918af390ff365a27de49364578 Mon Sep 17 00:00:00 2001
From: Richard Henderson <rth@twiddle.net>
Date: Fri, 23 Mar 2012 23:27:39 +0100
Subject: [PATCH] tcg-sparc: Fix qemu_ld/st to handle 32-bit host.
At the same time, split out the tlb load logic to a new function.
Fixes the cases of two data registers and two address registers.
Fixes the signature of, and adds missing, qemu_ld/st opcodes.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---
tcg/sparc/tcg-target.c | 777 ++++++++++++++++++++++---------------------------
1 file changed, 348 insertions(+), 429 deletions(-)
diff --git a/tcg/sparc/tcg-target.c b/tcg/sparc/tcg-target.c
index 23c2fda..d89c19b 100644
--- a/tcg/sparc/tcg-target.c
+++ b/tcg/sparc/tcg-target.c
@@ -59,8 +59,6 @@ static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
};
#endif
-#define ARG_OFFSET 1
-
static const int tcg_target_reg_alloc_order[] = {
TCG_REG_L0,
TCG_REG_L1,
@@ -288,6 +286,16 @@ static inline int tcg_target_const_match(tcg_target_long val,
#define ASI_PRIMARY_LITTLE 0x88
#endif
+#define LDUH_LE (LDUHA | INSN_ASI(ASI_PRIMARY_LITTLE))
+#define LDSH_LE (LDSHA | INSN_ASI(ASI_PRIMARY_LITTLE))
+#define LDUW_LE (LDUWA | INSN_ASI(ASI_PRIMARY_LITTLE))
+#define LDSW_LE (LDSWA | INSN_ASI(ASI_PRIMARY_LITTLE))
+#define LDX_LE (LDXA | INSN_ASI(ASI_PRIMARY_LITTLE))
+
+#define STH_LE (STHA | INSN_ASI(ASI_PRIMARY_LITTLE))
+#define STW_LE (STWA | INSN_ASI(ASI_PRIMARY_LITTLE))
+#define STX_LE (STXA | INSN_ASI(ASI_PRIMARY_LITTLE))
+
static inline void tcg_out_arith(TCGContext *s, int rd, int rs1, int rs2,
int op)
{
@@ -360,64 +368,43 @@ static inline void tcg_out_movi(TCGContext *s, TCGType type,
}
}
-static inline void tcg_out_ld_raw(TCGContext *s, int ret,
- tcg_target_long arg)
-{
- tcg_out_sethi(s, ret, arg);
- tcg_out32(s, LDUW | INSN_RD(ret) | INSN_RS1(ret) |
- INSN_IMM13(arg & 0x3ff));
-}
-
-static inline void tcg_out_ld_ptr(TCGContext *s, int ret,
- tcg_target_long arg)
+static inline void tcg_out_ldst_rr(TCGContext *s, int data, int a1,
+ int a2, int op)
{
- if (!check_fit_tl(arg, 10))
- tcg_out_movi(s, TCG_TYPE_PTR, ret, arg & ~0x3ffULL);
- if (TCG_TARGET_REG_BITS == 64) {
- tcg_out32(s, LDX | INSN_RD(ret) | INSN_RS1(ret) |
- INSN_IMM13(arg & 0x3ff));
- } else {
- tcg_out32(s, LDUW | INSN_RD(ret) | INSN_RS1(ret) |
- INSN_IMM13(arg & 0x3ff));
- }
+ tcg_out32(s, op | INSN_RD(data) | INSN_RS1(a1) | INSN_RS2(a2));
}
-static inline void tcg_out_ldst(TCGContext *s, int ret, int addr, int offset, int op)
+static inline void tcg_out_ldst(TCGContext *s, int ret, int addr,
+ int offset, int op)
{
- if (check_fit_tl(offset, 13))
+ if (check_fit_tl(offset, 13)) {
tcg_out32(s, op | INSN_RD(ret) | INSN_RS1(addr) |
INSN_IMM13(offset));
- else {
+ } else {
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_I5, offset);
- tcg_out32(s, op | INSN_RD(ret) | INSN_RS1(TCG_REG_I5) |
- INSN_RS2(addr));
+ tcg_out_ldst_rr(s, ret, addr, TCG_REG_I5, op);
}
}
-static inline void tcg_out_ldst_asi(TCGContext *s, int ret, int addr,
- int offset, int op, int asi)
-{
- tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_I5, offset);
- tcg_out32(s, op | INSN_RD(ret) | INSN_RS1(TCG_REG_I5) |
- INSN_ASI(asi) | INSN_RS2(addr));
-}
-
static inline void tcg_out_ld(TCGContext *s, TCGType type, TCGReg ret,
TCGReg arg1, tcg_target_long arg2)
{
- if (type == TCG_TYPE_I32)
- tcg_out_ldst(s, ret, arg1, arg2, LDUW);
- else
- tcg_out_ldst(s, ret, arg1, arg2, LDX);
+ tcg_out_ldst(s, ret, arg1, arg2, (type == TCG_TYPE_I32 ? LDUW : LDX));
}
static inline void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg,
TCGReg arg1, tcg_target_long arg2)
{
- if (type == TCG_TYPE_I32)
- tcg_out_ldst(s, arg, arg1, arg2, STW);
- else
- tcg_out_ldst(s, arg, arg1, arg2, STX);
+ tcg_out_ldst(s, arg, arg1, arg2, (type == TCG_TYPE_I32 ? STW : STX));
+}
+
+static inline void tcg_out_ld_ptr(TCGContext *s, int ret,
+ tcg_target_long arg)
+{
+ if (!check_fit_tl(arg, 10)) {
+ tcg_out_movi(s, TCG_TYPE_PTR, ret, arg & ~0x3ff);
+ }
+ tcg_out_ld(s, TCG_TYPE_PTR, ret, ret, arg & 0x3ff);
}
static inline void tcg_out_sety(TCGContext *s, int rs)
@@ -442,14 +429,15 @@ static inline void tcg_out_addi(TCGContext *s, int reg, tcg_target_long val)
}
}
-static inline void tcg_out_andi(TCGContext *s, int reg, tcg_target_long val)
+static inline void tcg_out_andi(TCGContext *s, int rd, int rs,
+ tcg_target_long val)
{
if (val != 0) {
if (check_fit_tl(val, 13))
- tcg_out_arithi(s, reg, reg, val, ARITH_AND);
+ tcg_out_arithi(s, rd, rs, val, ARITH_AND);
else {
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_I5, val);
- tcg_out_arith(s, reg, reg, TCG_REG_I5, ARITH_AND);
+ tcg_out_arith(s, rd, rs, TCG_REG_I5, ARITH_AND);
}
}
}
@@ -718,418 +706,328 @@ static const void * const qemu_st_helpers[4] = {
helper_stl_mmu,
helper_stq_mmu,
};
-#endif
-#if TARGET_LONG_BITS == 32
-#define TARGET_LD_OP LDUW
-#else
-#define TARGET_LD_OP LDX
-#endif
+/* Perform the TLB load and compare.
-#if defined(CONFIG_SOFTMMU)
-#if HOST_LONG_BITS == 32
-#define TARGET_ADDEND_LD_OP LDUW
+ Inputs:
+ ADDRLO_IDX contains the index into ARGS of the low part of the
+ address; the high part of the address is at ADDR_LOW_IDX+1.
+
+ MEM_INDEX and S_BITS are the memory context and log2 size of the load.
+
+ WHICH is the offset into the CPUTLBEntry structure of the slot to read.
+ This should be offsetof addr_read or addr_write.
+
+ The result of the TLB comparison is in %[ix]cc. The sanitized address
+ is in the returned register, maybe %o0. The TLB addend is in %o1. */
+
+static int tcg_out_tlb_load(TCGContext *s, int addrlo_idx, int mem_index,
+ int s_bits, const TCGArg *args, int which)
+{
+ const int addrlo = args[addrlo_idx];
+ const int r0 = TCG_REG_O0;
+ const int r1 = TCG_REG_O1;
+ const int r2 = TCG_REG_O2;
+ int addr = addrlo;
+ int tlb_ofs;
+
+ if (TCG_TARGET_REG_BITS == 32 && TARGET_LONG_BITS == 64) {
+ /* Assemble the 64-bit address in R0. */
+ tcg_out_arithi(s, r0, addrlo, 0, SHIFT_SRL);
+ tcg_out_arithi(s, r1, args[addrlo_idx + 1], 32, SHIFT_SLLX);
+ tcg_out_arith(s, r0, r0, r1, ARITH_OR);
+ }
+
+ /* Shift the page number down to tlb-entry. */
+ tcg_out_arithi(s, r1, addrlo,
+ TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS, SHIFT_SRL);
+
+ /* Mask out the page offset, except for the required alignment. */
+ tcg_out_andi(s, r0, addr, TARGET_PAGE_MASK | ((1 << s_bits) - 1));
+
+ /* Compute tlb index, modulo tlb size. */
+ tcg_out_andi(s, r1, r1, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS);
+
+ /* Relative to the current ENV. */
+ tcg_out_arith(s, r1, TCG_AREG0, r1, ARITH_ADD);
+
+ /* Find a base address that can load both tlb comparator and addend. */
+ tlb_ofs = offsetof(CPUArchState, tlb_table[mem_index][0]);
+ if (!check_fit_tl(tlb_ofs + sizeof(CPUTLBEntry), 13)) {
+ tcg_out_addi(s, r1, tlb_ofs);
+ tlb_ofs = 0;
+ }
+
+ /* Load the tlb comparator and the addend. */
+ tcg_out_ld(s, TCG_TYPE_TL, r2, r1, tlb_ofs + which);
+ tcg_out_ld(s, TCG_TYPE_PTR, r1, r1, tlb_ofs+offsetof(CPUTLBEntry, addend));
+
+ /* subcc arg0, arg2, %g0 */
+ tcg_out_cmp(s, r0, r2, 0);
+
+ /* If the guest address must be zero-extended, do so now. */
+ if (TCG_TARGET_REG_BITS == 64 && TARGET_LONG_BITS == 32) {
+ tcg_out_arithi(s, r0, addrlo, 0, SHIFT_SRL);
+ return r0;
+ }
+ return addrlo;
+}
+#endif /* CONFIG_SOFTMMU */
+
+static const int qemu_ld_opc[8] = {
+#ifdef TARGET_WORDS_BIGENDIAN
+ LDUB, LDUH, LDUW, LDX, LDSB, LDSH, LDSW, LDX
#else
-#define TARGET_ADDEND_LD_OP LDX
-#endif
+ LDUB, LDUH_LE, LDUW_LE, LDX_LE, LDSB, LDSH_LE, LDSW_LE, LDX_LE
#endif
+};
-#if TCG_TARGET_REG_BITS == 64
-#define HOST_LD_OP LDX
-#define HOST_ST_OP STX
-#define HOST_SLL_OP SHIFT_SLLX
-#define HOST_SRA_OP SHIFT_SRAX
+static const int qemu_st_opc[4] = {
+#ifdef TARGET_WORDS_BIGENDIAN
+ STB, STH, STW, STX
#else
-#define HOST_LD_OP LDUW
-#define HOST_ST_OP STW
-#define HOST_SLL_OP SHIFT_SLL
-#define HOST_SRA_OP SHIFT_SRA
+ STB, STH_LE, STW_LE, STX_LE
#endif
+};
-static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args,
- int opc)
+static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, int sizeop)
{
- int addr_reg, data_reg, arg0, arg1, arg2, mem_index, s_bits;
+ int addrlo_idx = 1, datalo, datahi, addr_reg;
#if defined(CONFIG_SOFTMMU)
- uint32_t *label1_ptr, *label2_ptr;
+ int memi_idx, memi, s_bits, n;
+ uint32_t *label_ptr[2];
#endif
- data_reg = *args++;
- addr_reg = *args++;
- mem_index = *args;
- s_bits = opc & 3;
-
- arg0 = TCG_REG_O0;
- arg1 = TCG_REG_O1;
- arg2 = TCG_REG_O2;
+ datahi = datalo = args[0];
+ if (TCG_TARGET_REG_BITS == 32 && sizeop == 3) {
+ datahi = args[1];
+ addrlo_idx = 2;
+ }
#if defined(CONFIG_SOFTMMU)
- /* srl addr_reg, x, arg1 */
- tcg_out_arithi(s, arg1, addr_reg, TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS,
- SHIFT_SRL);
- /* and addr_reg, x, arg0 */
- tcg_out_arithi(s, arg0, addr_reg, TARGET_PAGE_MASK | ((1 << s_bits) - 1),
- ARITH_AND);
+ memi_idx = addrlo_idx + 1 + (TARGET_LONG_BITS > TCG_TARGET_REG_BITS);
+ memi = args[memi_idx];
+ s_bits = sizeop & 3;
+
+ addr_reg = tcg_out_tlb_load(s, addrlo_idx, memi, s_bits, args,
+ offsetof(CPUTLBEntry, addr_read));
+
+ if (TCG_TARGET_REG_BITS == 32 && sizeop == 3) {
+ int reg64;
+
+ /* bne,pn %[xi]cc, label0 */
+ label_ptr[0] = (uint32_t *)s->code_ptr;
+ tcg_out32(s, (INSN_OP(0) | INSN_COND(COND_NE, 0) | INSN_OP2(0x1)
+ | ((TARGET_LONG_BITS == 64) << 21)));
+
+ /* TLB Hit. */
+ /* Load all 64-bits into an O/G register. */
+ reg64 = (datalo < 16 ? datalo : TCG_REG_O0);
+ tcg_out_ldst_rr(s, reg64, addr_reg, TCG_REG_O1, qemu_ld_opc[sizeop]);
+
+ /* Move the two 32-bit pieces into the destination registers. */
+ tcg_out_arithi(s, datahi, reg64, 32, SHIFT_SRLX);
+ if (reg64 != datalo) {
+ tcg_out_mov(s, TCG_TYPE_I32, datalo, reg64);
+ }
- /* and arg1, x, arg1 */
- tcg_out_andi(s, arg1, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS);
+ /* b,a,pt label1 */
+ label_ptr[1] = (uint32_t *)s->code_ptr;
+ tcg_out32(s, (INSN_OP(0) | INSN_COND(COND_A, 0) | INSN_OP2(0x1)
+ | (1 << 29) | (1 << 19)));
+ } else {
+ /* The fast path is exactly one insn. Thus we can perform the
+ entire TLB Hit in the (annulled) delay slot of the branch
+ over the TLB Miss case. */
+
+ /* beq,a,pt %[xi]cc, label0 */
+ label_ptr[0] = NULL;
+ label_ptr[1] = (uint32_t *)s->code_ptr;
+ tcg_out32(s, (INSN_OP(0) | INSN_COND(COND_E, 0) | INSN_OP2(0x1)
+ | ((TARGET_LONG_BITS == 64) << 21)
+ | (1 << 29) | (1 << 19)));
+ /* delay slot */
+ tcg_out_ldst_rr(s, datalo, addr_reg, TCG_REG_O1, qemu_ld_opc[sizeop]);
+ }
- /* add arg1, x, arg1 */
- tcg_out_addi(s, arg1, offsetof(CPUArchState,
- tlb_table[mem_index][0].addr_read));
+ /* TLB Miss. */
- /* add env, arg1, arg1 */
- tcg_out_arith(s, arg1, TCG_AREG0, arg1, ARITH_ADD);
+ if (label_ptr[0]) {
+ *label_ptr[0] |= INSN_OFF19((unsigned long)s->code_ptr -
+ (unsigned long)label_ptr[0]);
+ }
+ n = 0;
+ tcg_out_mov(s, TCG_TYPE_PTR, tcg_target_call_iarg_regs[n++], TCG_AREG0);
+ if (TARGET_LONG_BITS > TCG_TARGET_REG_BITS) {
+ tcg_out_mov(s, TCG_TYPE_REG, tcg_target_call_iarg_regs[n++],
+ args[addrlo_idx + 1]);
+ }
+ tcg_out_mov(s, TCG_TYPE_REG, tcg_target_call_iarg_regs[n++],
+ args[addrlo_idx]);
- /* ld [arg1], arg2 */
- tcg_out32(s, TARGET_LD_OP | INSN_RD(arg2) | INSN_RS1(arg1) |
- INSN_RS2(TCG_REG_G0));
+ /* Store AREG0 in stack to avoid ugly glibc bugs that mangle
+ global registers */
+ tcg_out_st(s, TCG_TYPE_REG, TCG_AREG0, TCG_REG_CALL_STACK,
+ TCG_TARGET_CALL_STACK_OFFSET - TCG_STATIC_CALL_ARGS_SIZE -
+ sizeof(long));
- /* subcc arg0, arg2, %g0 */
- tcg_out_arith(s, TCG_REG_G0, arg0, arg2, ARITH_SUBCC);
-
- /* will become:
- be label1
- or
- be,pt %xcc label1 */
- label1_ptr = (uint32_t *)s->code_ptr;
- tcg_out32(s, 0);
-
- /* mov (delay slot) */
- tcg_out_mov(s, TCG_TYPE_PTR, arg0, addr_reg);
-
- /* mov */
- tcg_out_movi(s, TCG_TYPE_I32, arg1, mem_index);
- /* XXX/FIXME: suboptimal */
- tcg_out_mov(s, TCG_TYPE_I32, tcg_target_call_iarg_regs[3],
- tcg_target_call_iarg_regs[2]);
- tcg_out_mov(s, TCG_TYPE_I64, tcg_target_call_iarg_regs[2],
- tcg_target_call_iarg_regs[1]);
- tcg_out_mov(s, TCG_TYPE_TL, tcg_target_call_iarg_regs[1],
- tcg_target_call_iarg_regs[0]);
- tcg_out_mov(s, TCG_TYPE_PTR, tcg_target_call_iarg_regs[0],
- TCG_AREG0);
-
- /* XXX: move that code at the end of the TB */
/* qemu_ld_helper[s_bits](arg0, arg1) */
tcg_out32(s, CALL | ((((tcg_target_ulong)qemu_ld_helpers[s_bits]
- (tcg_target_ulong)s->code_ptr) >> 2)
& 0x3fffffff));
- /* Store AREG0 in stack to avoid ugly glibc bugs that mangle
- global registers */
- // delay slot
- tcg_out_ldst(s, TCG_AREG0, TCG_REG_CALL_STACK,
- TCG_TARGET_CALL_STACK_OFFSET - TCG_STATIC_CALL_ARGS_SIZE -
- sizeof(long), HOST_ST_OP);
- tcg_out_ldst(s, TCG_AREG0, TCG_REG_CALL_STACK,
- TCG_TARGET_CALL_STACK_OFFSET - TCG_STATIC_CALL_ARGS_SIZE -
- sizeof(long), HOST_LD_OP);
-
- /* data_reg = sign_extend(arg0) */
- switch(opc) {
+ /* delay slot */
+ tcg_out_movi(s, TCG_TYPE_I32, tcg_target_call_iarg_regs[n], memi);
+
+ /* Reload AREG0. */
+ tcg_out_ld(s, TCG_TYPE_REG, TCG_AREG0, TCG_REG_CALL_STACK,
+ TCG_TARGET_CALL_STACK_OFFSET - TCG_STATIC_CALL_ARGS_SIZE -
+ sizeof(long));
+
+ n = tcg_target_call_oarg_regs[0];
+ /* datalo = sign_extend(arg0) */
+ switch (sizeop) {
case 0 | 4:
- /* sll arg0, 24/56, data_reg */
- tcg_out_arithi(s, data_reg, arg0, (int)sizeof(tcg_target_long) * 8 - 8,
- HOST_SLL_OP);
- /* sra data_reg, 24/56, data_reg */
- tcg_out_arithi(s, data_reg, data_reg,
- (int)sizeof(tcg_target_long) * 8 - 8, HOST_SRA_OP);
+ /* Recall that SRA sign extends from bit 31 through bit 63. */
+ tcg_out_arithi(s, datalo, n, 24, SHIFT_SLL);
+ tcg_out_arithi(s, datalo, datalo, 24, SHIFT_SRA);
break;
case 1 | 4:
- /* sll arg0, 16/48, data_reg */
- tcg_out_arithi(s, data_reg, arg0,
- (int)sizeof(tcg_target_long) * 8 - 16, HOST_SLL_OP);
- /* sra data_reg, 16/48, data_reg */
- tcg_out_arithi(s, data_reg, data_reg,
- (int)sizeof(tcg_target_long) * 8 - 16, HOST_SRA_OP);
+ tcg_out_arithi(s, datalo, n, 16, SHIFT_SLL);
+ tcg_out_arithi(s, datalo, datalo, 16, SHIFT_SRA);
break;
case 2 | 4:
- /* sll arg0, 32, data_reg */
- tcg_out_arithi(s, data_reg, arg0, 32, HOST_SLL_OP);
- /* sra data_reg, 32, data_reg */
- tcg_out_arithi(s, data_reg, data_reg, 32, HOST_SRA_OP);
+ tcg_out_arithi(s, datalo, n, 0, SHIFT_SRA);
break;
+ case 3:
+ if (TCG_TARGET_REG_BITS == 32) {
+ tcg_out_mov(s, TCG_TYPE_REG, datahi, n);
+ tcg_out_mov(s, TCG_TYPE_REG, datalo, n + 1);
+ break;
+ }
+ /* FALLTHRU */
case 0:
case 1:
case 2:
- case 3:
default:
/* mov */
- tcg_out_mov(s, TCG_TYPE_REG, data_reg, arg0);
+ tcg_out_mov(s, TCG_TYPE_REG, datalo, n);
break;
}
- /* will become:
- ba label2 */
- label2_ptr = (uint32_t *)s->code_ptr;
- tcg_out32(s, 0);
-
- /* nop (delay slot */
- tcg_out_nop(s);
-
- /* label1: */
-#if TARGET_LONG_BITS == 32
- /* be label1 */
- *label1_ptr = (INSN_OP(0) | INSN_COND(COND_E, 0) | INSN_OP2(0x2) |
- INSN_OFF22((unsigned long)s->code_ptr -
- (unsigned long)label1_ptr));
-#else
- /* be,pt %xcc label1 */
- *label1_ptr = (INSN_OP(0) | INSN_COND(COND_E, 0) | INSN_OP2(0x1) |
- (0x5 << 19) | INSN_OFF19((unsigned long)s->code_ptr -
- (unsigned long)label1_ptr));
-#endif
-
- /* ld [arg1 + x], arg1 */
- tcg_out_ldst(s, arg1, arg1, offsetof(CPUTLBEntry, addend) -
- offsetof(CPUTLBEntry, addr_read), TARGET_ADDEND_LD_OP);
-
-#if TARGET_LONG_BITS == 32
- /* and addr_reg, x, arg0 */
- tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_I5, 0xffffffff);
- tcg_out_arith(s, arg0, addr_reg, TCG_REG_I5, ARITH_AND);
- /* add arg0, arg1, arg0 */
- tcg_out_arith(s, arg0, arg0, arg1, ARITH_ADD);
+ *label_ptr[1] |= INSN_OFF19((unsigned long)s->code_ptr -
+ (unsigned long)label_ptr[1]);
#else
- /* add addr_reg, arg1, arg0 */
- tcg_out_arith(s, arg0, addr_reg, arg1, ARITH_ADD);
-#endif
+ addr_reg = args[addrlo_idx];
+ if (TCG_TARGET_REG_BITS == 64 && TARGET_LONG_BITS == 32) {
+ tcg_out_arithi(s, TCG_REG_I5, addr_reg, 0, SHIFT_SRL);
+ addr_reg = TCG_REG_I5;
+ }
+ if (TCG_TARGET_REG_BITS == 32 && sizeop == 3) {
+ int reg64 = (datalo < 16 ? datalo : TCG_REG_O0);
-#else
- arg0 = addr_reg;
-#endif
+ tcg_out_ldst_rr(s, reg64, addr_reg, TCG_REG_G0, qemu_ld_opc[sizeop]);
- switch(opc) {
- case 0:
- /* ldub [arg0], data_reg */
- tcg_out_ldst(s, data_reg, arg0, 0, LDUB);
- break;
- case 0 | 4:
- /* ldsb [arg0], data_reg */
- tcg_out_ldst(s, data_reg, arg0, 0, LDSB);
- break;
- case 1:
-#ifdef TARGET_WORDS_BIGENDIAN
- /* lduh [arg0], data_reg */
- tcg_out_ldst(s, data_reg, arg0, 0, LDUH);
-#else
- /* lduha [arg0] ASI_PRIMARY_LITTLE, data_reg */
- tcg_out_ldst_asi(s, data_reg, arg0, 0, LDUHA, ASI_PRIMARY_LITTLE);
-#endif
- break;
- case 1 | 4:
-#ifdef TARGET_WORDS_BIGENDIAN
- /* ldsh [arg0], data_reg */
- tcg_out_ldst(s, data_reg, arg0, 0, LDSH);
-#else
- /* ldsha [arg0] ASI_PRIMARY_LITTLE, data_reg */
- tcg_out_ldst_asi(s, data_reg, arg0, 0, LDSHA, ASI_PRIMARY_LITTLE);
-#endif
- break;
- case 2:
-#ifdef TARGET_WORDS_BIGENDIAN
- /* lduw [arg0], data_reg */
- tcg_out_ldst(s, data_reg, arg0, 0, LDUW);
-#else
- /* lduwa [arg0] ASI_PRIMARY_LITTLE, data_reg */
- tcg_out_ldst_asi(s, data_reg, arg0, 0, LDUWA, ASI_PRIMARY_LITTLE);
-#endif
- break;
- case 2 | 4:
-#ifdef TARGET_WORDS_BIGENDIAN
- /* ldsw [arg0], data_reg */
- tcg_out_ldst(s, data_reg, arg0, 0, LDSW);
-#else
- /* ldswa [arg0] ASI_PRIMARY_LITTLE, data_reg */
- tcg_out_ldst_asi(s, data_reg, arg0, 0, LDSWA, ASI_PRIMARY_LITTLE);
-#endif
- break;
- case 3:
-#ifdef TARGET_WORDS_BIGENDIAN
- /* ldx [arg0], data_reg */
- tcg_out_ldst(s, data_reg, arg0, 0, LDX);
-#else
- /* ldxa [arg0] ASI_PRIMARY_LITTLE, data_reg */
- tcg_out_ldst_asi(s, data_reg, arg0, 0, LDXA, ASI_PRIMARY_LITTLE);
-#endif
- break;
- default:
- tcg_abort();
+ tcg_out_arithi(s, datahi, reg64, 32, SHIFT_SRLX);
+ if (reg64 != datalo) {
+ tcg_out_mov(s, TCG_TYPE_I32, datalo, reg64);
+ }
+ } else {
+ tcg_out_ldst_rr(s, datalo, addr_reg, TCG_REG_G0, qemu_ld_opc[sizeop]);
}
-
-#if defined(CONFIG_SOFTMMU)
- /* label2: */
- *label2_ptr = (INSN_OP(0) | INSN_COND(COND_A, 0) | INSN_OP2(0x2) |
- INSN_OFF22((unsigned long)s->code_ptr -
- (unsigned long)label2_ptr));
-#endif
+#endif /* CONFIG_SOFTMMU */
}
-static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args,
- int opc)
+static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, int sizeop)
{
- int addr_reg, data_reg, arg0, arg1, arg2, mem_index, s_bits;
+ int addrlo_idx = 1, datalo, datahi, addr_reg;
#if defined(CONFIG_SOFTMMU)
- uint32_t *label1_ptr, *label2_ptr;
+ int memi_idx, memi, n;
+ uint32_t *label_ptr;
#endif
- data_reg = *args++;
- addr_reg = *args++;
- mem_index = *args;
-
- s_bits = opc;
-
- arg0 = TCG_REG_O0;
- arg1 = TCG_REG_O1;
- arg2 = TCG_REG_O2;
+ datahi = datalo = args[0];
+ if (TCG_TARGET_REG_BITS == 32 && sizeop == 3) {
+ datahi = args[1];
+ addrlo_idx = 2;
+ }
#if defined(CONFIG_SOFTMMU)
- /* srl addr_reg, x, arg1 */
- tcg_out_arithi(s, arg1, addr_reg, TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS,
- SHIFT_SRL);
-
- /* and addr_reg, x, arg0 */
- tcg_out_arithi(s, arg0, addr_reg, TARGET_PAGE_MASK | ((1 << s_bits) - 1),
- ARITH_AND);
-
- /* and arg1, x, arg1 */
- tcg_out_andi(s, arg1, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS);
-
- /* add arg1, x, arg1 */
- tcg_out_addi(s, arg1, offsetof(CPUArchState,
- tlb_table[mem_index][0].addr_write));
+ memi_idx = addrlo_idx + 1 + (TARGET_LONG_BITS > TCG_TARGET_REG_BITS);
+ memi = args[memi_idx];
+
+ addr_reg = tcg_out_tlb_load(s, addrlo_idx, memi, sizeop, args,
+ offsetof(CPUTLBEntry, addr_write));
+
+ if (TCG_TARGET_REG_BITS == 32 && sizeop == 3) {
+ /* Reconstruct the full 64-bit value in %g1, using %o2 as temp. */
+ /* ??? Redefine the temps from %i4/%i5 so that we have a o/g temp. */
+ tcg_out_arithi(s, TCG_REG_G1, datalo, 0, SHIFT_SRL);
+ tcg_out_arithi(s, TCG_REG_O2, datahi, 32, SHIFT_SLLX);
+ tcg_out_arith(s, TCG_REG_G1, TCG_REG_G1, TCG_REG_O2, ARITH_OR);
+ datalo = TCG_REG_G1;
+ }
- /* add env, arg1, arg1 */
- tcg_out_arith(s, arg1, TCG_AREG0, arg1, ARITH_ADD);
+ /* The fast path is exactly one insn. Thus we can perform the entire
+ TLB Hit in the (annulled) delay slot of the branch over TLB Miss. */
+ /* beq,a,pt %[xi]cc, label0 */
+ label_ptr = (uint32_t *)s->code_ptr;
+ tcg_out32(s, (INSN_OP(0) | INSN_COND(COND_E, 0) | INSN_OP2(0x1)
+ | ((TARGET_LONG_BITS == 64) << 21)
+ | (1 << 29) | (1 << 19)));
+ /* delay slot */
+ tcg_out_ldst_rr(s, datalo, addr_reg, TCG_REG_O1, qemu_st_opc[sizeop]);
+
+ /* TLB Miss. */
+
+ n = 0;
+ tcg_out_mov(s, TCG_TYPE_PTR, tcg_target_call_iarg_regs[n++], TCG_AREG0);
+ if (TARGET_LONG_BITS > TCG_TARGET_REG_BITS) {
+ tcg_out_mov(s, TCG_TYPE_REG, tcg_target_call_iarg_regs[n++],
+ args[addrlo_idx + 1]);
+ }
+ tcg_out_mov(s, TCG_TYPE_REG, tcg_target_call_iarg_regs[n++],
+ args[addrlo_idx]);
+ if (TCG_TARGET_REG_BITS == 32 && sizeop == 3) {
+ tcg_out_mov(s, TCG_TYPE_REG, tcg_target_call_iarg_regs[n++], datahi);
+ }
+ tcg_out_mov(s, TCG_TYPE_REG, tcg_target_call_iarg_regs[n++], datalo);
- /* ld [arg1], arg2 */
- tcg_out32(s, TARGET_LD_OP | INSN_RD(arg2) | INSN_RS1(arg1) |
- INSN_RS2(TCG_REG_G0));
+ /* Store AREG0 in stack to avoid ugly glibc bugs that mangle
+ global registers */
+ tcg_out_st(s, TCG_TYPE_REG, TCG_AREG0, TCG_REG_CALL_STACK,
+ TCG_TARGET_CALL_STACK_OFFSET - TCG_STATIC_CALL_ARGS_SIZE -
+ sizeof(long));
- /* subcc arg0, arg2, %g0 */
- tcg_out_arith(s, TCG_REG_G0, arg0, arg2, ARITH_SUBCC);
-
- /* will become:
- be label1
- or
- be,pt %xcc label1 */
- label1_ptr = (uint32_t *)s->code_ptr;
- tcg_out32(s, 0);
-
- /* mov (delay slot) */
- tcg_out_mov(s, TCG_TYPE_PTR, arg0, addr_reg);
-
- /* mov */
- tcg_out_mov(s, TCG_TYPE_REG, arg1, data_reg);
-
- /* mov */
- tcg_out_movi(s, TCG_TYPE_I32, arg2, mem_index);
-
- /* XXX/FIXME: suboptimal */
- tcg_out_mov(s, TCG_TYPE_I32, tcg_target_call_iarg_regs[3],
- tcg_target_call_iarg_regs[2]);
- tcg_out_mov(s, TCG_TYPE_I64, tcg_target_call_iarg_regs[2],
- tcg_target_call_iarg_regs[1]);
- tcg_out_mov(s, TCG_TYPE_TL, tcg_target_call_iarg_regs[1],
- tcg_target_call_iarg_regs[0]);
- tcg_out_mov(s, TCG_TYPE_PTR, tcg_target_call_iarg_regs[0],
- TCG_AREG0);
- /* XXX: move that code at the end of the TB */
/* qemu_st_helper[s_bits](arg0, arg1, arg2) */
- tcg_out32(s, CALL | ((((tcg_target_ulong)qemu_st_helpers[s_bits]
+ tcg_out32(s, CALL | ((((tcg_target_ulong)qemu_st_helpers[sizeop]
- (tcg_target_ulong)s->code_ptr) >> 2)
& 0x3fffffff));
- /* Store AREG0 in stack to avoid ugly glibc bugs that mangle
- global registers */
- // delay slot
- tcg_out_ldst(s, TCG_AREG0, TCG_REG_CALL_STACK,
- TCG_TARGET_CALL_STACK_OFFSET - TCG_STATIC_CALL_ARGS_SIZE -
- sizeof(long), HOST_ST_OP);
- tcg_out_ldst(s, TCG_AREG0, TCG_REG_CALL_STACK,
- TCG_TARGET_CALL_STACK_OFFSET - TCG_STATIC_CALL_ARGS_SIZE -
- sizeof(long), HOST_LD_OP);
-
- /* will become:
- ba label2 */
- label2_ptr = (uint32_t *)s->code_ptr;
- tcg_out32(s, 0);
-
- /* nop (delay slot) */
- tcg_out_nop(s);
+ /* delay slot */
+ tcg_out_movi(s, TCG_TYPE_REG, tcg_target_call_iarg_regs[n], memi);
-#if TARGET_LONG_BITS == 32
- /* be label1 */
- *label1_ptr = (INSN_OP(0) | INSN_COND(COND_E, 0) | INSN_OP2(0x2) |
- INSN_OFF22((unsigned long)s->code_ptr -
- (unsigned long)label1_ptr));
-#else
- /* be,pt %xcc label1 */
- *label1_ptr = (INSN_OP(0) | INSN_COND(COND_E, 0) | INSN_OP2(0x1) |
- (0x5 << 19) | INSN_OFF19((unsigned long)s->code_ptr -
- (unsigned long)label1_ptr));
-#endif
-
- /* ld [arg1 + x], arg1 */
- tcg_out_ldst(s, arg1, arg1, offsetof(CPUTLBEntry, addend) -
- offsetof(CPUTLBEntry, addr_write), TARGET_ADDEND_LD_OP);
+ /* Reload AREG0. */
+ tcg_out_ld(s, TCG_TYPE_REG, TCG_AREG0, TCG_REG_CALL_STACK,
+ TCG_TARGET_CALL_STACK_OFFSET - TCG_STATIC_CALL_ARGS_SIZE -
+ sizeof(long));
-#if TARGET_LONG_BITS == 32
- /* and addr_reg, x, arg0 */
- tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_I5, 0xffffffff);
- tcg_out_arith(s, arg0, addr_reg, TCG_REG_I5, ARITH_AND);
- /* add arg0, arg1, arg0 */
- tcg_out_arith(s, arg0, arg0, arg1, ARITH_ADD);
+ *label_ptr |= INSN_OFF19((unsigned long)s->code_ptr -
+ (unsigned long)label_ptr);
#else
- /* add addr_reg, arg1, arg0 */
- tcg_out_arith(s, arg0, addr_reg, arg1, ARITH_ADD);
-#endif
-
-#else
- arg0 = addr_reg;
-#endif
-
- switch(opc) {
- case 0:
- /* stb data_reg, [arg0] */
- tcg_out_ldst(s, data_reg, arg0, 0, STB);
- break;
- case 1:
-#ifdef TARGET_WORDS_BIGENDIAN
- /* sth data_reg, [arg0] */
- tcg_out_ldst(s, data_reg, arg0, 0, STH);
-#else
- /* stha data_reg, [arg0] ASI_PRIMARY_LITTLE */
- tcg_out_ldst_asi(s, data_reg, arg0, 0, STHA, ASI_PRIMARY_LITTLE);
-#endif
- break;
- case 2:
-#ifdef TARGET_WORDS_BIGENDIAN
- /* stw data_reg, [arg0] */
- tcg_out_ldst(s, data_reg, arg0, 0, STW);
-#else
- /* stwa data_reg, [arg0] ASI_PRIMARY_LITTLE */
- tcg_out_ldst_asi(s, data_reg, arg0, 0, STWA, ASI_PRIMARY_LITTLE);
-#endif
- break;
- case 3:
-#ifdef TARGET_WORDS_BIGENDIAN
- /* stx data_reg, [arg0] */
- tcg_out_ldst(s, data_reg, arg0, 0, STX);
-#else
- /* stxa data_reg, [arg0] ASI_PRIMARY_LITTLE */
- tcg_out_ldst_asi(s, data_reg, arg0, 0, STXA, ASI_PRIMARY_LITTLE);
-#endif
- break;
- default:
- tcg_abort();
+ addr_reg = args[addrlo_idx];
+ if (TCG_TARGET_REG_BITS == 64 && TARGET_LONG_BITS == 32) {
+ tcg_out_arithi(s, TCG_REG_I5, addr_reg, 0, SHIFT_SRL);
+ addr_reg = TCG_REG_I5;
}
-
-#if defined(CONFIG_SOFTMMU)
- /* label2: */
- *label2_ptr = (INSN_OP(0) | INSN_COND(COND_A, 0) | INSN_OP2(0x2) |
- INSN_OFF22((unsigned long)s->code_ptr -
- (unsigned long)label2_ptr));
-#endif
+ if (TCG_TARGET_REG_BITS == 32 && sizeop == 3) {
+ /* Reconstruct the full 64-bit value in %g1, using %o2 as temp. */
+ /* ??? Redefine the temps from %i4/%i5 so that we have a o/g temp. */
+ tcg_out_arithi(s, TCG_REG_G1, datalo, 0, SHIFT_SRL);
+ tcg_out_arithi(s, TCG_REG_O2, datahi, 32, SHIFT_SLLX);
+ tcg_out_arith(s, TCG_REG_G1, TCG_REG_G1, TCG_REG_O2, ARITH_OR);
+ datalo = TCG_REG_G1;
+ }
+ tcg_out_ldst_rr(s, datalo, addr_reg, TCG_REG_G0, qemu_st_opc[sizeop]);
+#endif /* CONFIG_SOFTMMU */
}
static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args,
@@ -1175,12 +1073,12 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args,
/* Store AREG0 in stack to avoid ugly glibc bugs that mangle
global registers */
// delay slot
- tcg_out_ldst(s, TCG_AREG0, TCG_REG_CALL_STACK,
- TCG_TARGET_CALL_STACK_OFFSET - TCG_STATIC_CALL_ARGS_SIZE -
- sizeof(long), HOST_ST_OP);
- tcg_out_ldst(s, TCG_AREG0, TCG_REG_CALL_STACK,
- TCG_TARGET_CALL_STACK_OFFSET - TCG_STATIC_CALL_ARGS_SIZE -
- sizeof(long), HOST_LD_OP);
+ tcg_out_st(s, TCG_TYPE_REG, TCG_AREG0, TCG_REG_CALL_STACK,
+ TCG_TARGET_CALL_STACK_OFFSET - TCG_STATIC_CALL_ARGS_SIZE -
+ sizeof(long));
+ tcg_out_ld(s, TCG_TYPE_REG, TCG_AREG0, TCG_REG_CALL_STACK,
+ TCG_TARGET_CALL_STACK_OFFSET - TCG_STATIC_CALL_ARGS_SIZE -
+ sizeof(long));
break;
case INDEX_op_jmp:
case INDEX_op_br:
@@ -1348,6 +1246,9 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args,
tcg_out_qemu_ld(s, args, 2 | 4);
break;
#endif
+ case INDEX_op_qemu_ld64:
+ tcg_out_qemu_ld(s, args, 3);
+ break;
case INDEX_op_qemu_st8:
tcg_out_qemu_st(s, args, 0);
break;
@@ -1357,6 +1258,9 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args,
case INDEX_op_qemu_st32:
tcg_out_qemu_st(s, args, 2);
break;
+ case INDEX_op_qemu_st64:
+ tcg_out_qemu_st(s, args, 3);
+ break;
#if TCG_TARGET_REG_BITS == 64
case INDEX_op_movi_i64:
@@ -1421,13 +1325,6 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args,
args[2], const_args[2]);
break;
- case INDEX_op_qemu_ld64:
- tcg_out_qemu_ld(s, args, 3);
- break;
- case INDEX_op_qemu_st64:
- tcg_out_qemu_st(s, args, 3);
- break;
-
#endif
gen_arith:
tcg_out_arithc(s, args[0], args[1], args[2], const_args[2], c);
@@ -1492,20 +1389,6 @@ static const TCGTargetOpDef sparc_op_defs[] = {
{ INDEX_op_mulu2_i32, { "r", "r", "r", "rJ" } },
#endif
- { INDEX_op_qemu_ld8u, { "r", "L" } },
- { INDEX_op_qemu_ld8s, { "r", "L" } },
- { INDEX_op_qemu_ld16u, { "r", "L" } },
- { INDEX_op_qemu_ld16s, { "r", "L" } },
- { INDEX_op_qemu_ld32, { "r", "L" } },
-#if TCG_TARGET_REG_BITS == 64
- { INDEX_op_qemu_ld32u, { "r", "L" } },
- { INDEX_op_qemu_ld32s, { "r", "L" } },
-#endif
-
- { INDEX_op_qemu_st8, { "L", "L" } },
- { INDEX_op_qemu_st16, { "L", "L" } },
- { INDEX_op_qemu_st32, { "L", "L" } },
-
#if TCG_TARGET_REG_BITS == 64
{ INDEX_op_mov_i64, { "r", "r" } },
{ INDEX_op_movi_i64, { "r" } },
@@ -1520,8 +1403,6 @@ static const TCGTargetOpDef sparc_op_defs[] = {
{ INDEX_op_st16_i64, { "r", "r" } },
{ INDEX_op_st32_i64, { "r", "r" } },
{ INDEX_op_st_i64, { "r", "r" } },
- { INDEX_op_qemu_ld64, { "L", "L" } },
- { INDEX_op_qemu_st64, { "L", "L" } },
{ INDEX_op_add_i64, { "r", "r", "rJ" } },
{ INDEX_op_mul_i64, { "r", "r", "rJ" } },
@@ -1548,10 +1429,48 @@ static const TCGTargetOpDef sparc_op_defs[] = {
{ INDEX_op_brcond_i64, { "r", "rJ" } },
{ INDEX_op_setcond_i64, { "r", "r", "rJ" } },
-#else
- { INDEX_op_qemu_ld64, { "L", "L", "L" } },
+#endif
+
+#if TCG_TARGET_REG_BITS == 64
+ { INDEX_op_qemu_ld8u, { "r", "L" } },
+ { INDEX_op_qemu_ld8s, { "r", "L" } },
+ { INDEX_op_qemu_ld16u, { "r", "L" } },
+ { INDEX_op_qemu_ld16s, { "r", "L" } },
+ { INDEX_op_qemu_ld32, { "r", "L" } },
+ { INDEX_op_qemu_ld32u, { "r", "L" } },
+ { INDEX_op_qemu_ld32s, { "r", "L" } },
+ { INDEX_op_qemu_ld64, { "r", "L" } },
+
+ { INDEX_op_qemu_st8, { "L", "L" } },
+ { INDEX_op_qemu_st16, { "L", "L" } },
+ { INDEX_op_qemu_st32, { "L", "L" } },
+ { INDEX_op_qemu_st64, { "L", "L" } },
+#elif TARGET_LONG_BITS <= TCG_TARGET_REG_BITS
+ { INDEX_op_qemu_ld8u, { "r", "L" } },
+ { INDEX_op_qemu_ld8s, { "r", "L" } },
+ { INDEX_op_qemu_ld16u, { "r", "L" } },
+ { INDEX_op_qemu_ld16s, { "r", "L" } },
+ { INDEX_op_qemu_ld32, { "r", "L" } },
+ { INDEX_op_qemu_ld64, { "r", "r", "L" } },
+
+ { INDEX_op_qemu_st8, { "L", "L" } },
+ { INDEX_op_qemu_st16, { "L", "L" } },
+ { INDEX_op_qemu_st32, { "L", "L" } },
{ INDEX_op_qemu_st64, { "L", "L", "L" } },
+#else
+ { INDEX_op_qemu_ld8u, { "r", "L", "L" } },
+ { INDEX_op_qemu_ld8s, { "r", "L", "L" } },
+ { INDEX_op_qemu_ld16u, { "r", "L", "L" } },
+ { INDEX_op_qemu_ld16s, { "r", "L", "L" } },
+ { INDEX_op_qemu_ld32, { "r", "L", "L" } },
+ { INDEX_op_qemu_ld64, { "L", "L", "L", "L" } },
+
+ { INDEX_op_qemu_st8, { "L", "L", "L" } },
+ { INDEX_op_qemu_st16, { "L", "L", "L" } },
+ { INDEX_op_qemu_st32, { "L", "L", "L" } },
+ { INDEX_op_qemu_st64, { "L", "L", "L", "L" } },
#endif
+
{ -1 },
};
--
1.7.12.1
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