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Diffstat (limited to 'tcg/mips/tcg-target.c')
-rw-r--r--tcg/mips/tcg-target.c772
1 files changed, 383 insertions, 389 deletions
diff --git a/tcg/mips/tcg-target.c b/tcg/mips/tcg-target.c
index 5ccfb1d76c..e7dbb3b79f 100644
--- a/tcg/mips/tcg-target.c
+++ b/tcg/mips/tcg-target.c
@@ -24,14 +24,17 @@
* THE SOFTWARE.
*/
-#include "tcg-be-null.h"
+#include "tcg-be-ldst.h"
-#if defined(HOST_WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN)
-# define TCG_NEED_BSWAP 0
+#ifdef HOST_WORDS_BIGENDIAN
+# define MIPS_BE 1
#else
-# define TCG_NEED_BSWAP 1
+# define MIPS_BE 0
#endif
+#define LO_OFF (MIPS_BE * 4)
+#define HI_OFF (4 - LO_OFF)
+
#ifndef NDEBUG
static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
"zero",
@@ -161,11 +164,11 @@ static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
case 'l': /* qemu_ld input arg constraint */
ct->ct |= TCG_CT_REG;
tcg_regset_set(ct->u.regs, 0xffffffff);
-#if defined(CONFIG_SOFTMMU)
tcg_regset_reset_reg(ct->u.regs, TCG_REG_A0);
-# if (TARGET_LONG_BITS == 64)
- tcg_regset_reset_reg(ct->u.regs, TCG_REG_A2);
-# endif
+#if defined(CONFIG_SOFTMMU)
+ if (TARGET_LONG_BITS == 64) {
+ tcg_regset_reset_reg(ct->u.regs, TCG_REG_A2);
+ }
#endif
break;
case 'S': /* qemu_st constraint */
@@ -173,13 +176,12 @@ static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
tcg_regset_set(ct->u.regs, 0xffffffff);
tcg_regset_reset_reg(ct->u.regs, TCG_REG_A0);
#if defined(CONFIG_SOFTMMU)
-# if (TARGET_LONG_BITS == 32)
- tcg_regset_reset_reg(ct->u.regs, TCG_REG_A1);
-# endif
- tcg_regset_reset_reg(ct->u.regs, TCG_REG_A2);
-# if TARGET_LONG_BITS == 64
- tcg_regset_reset_reg(ct->u.regs, TCG_REG_A3);
-# endif
+ if (TARGET_LONG_BITS == 32) {
+ tcg_regset_reset_reg(ct->u.regs, TCG_REG_A1);
+ } else {
+ tcg_regset_reset_reg(ct->u.regs, TCG_REG_A2);
+ tcg_regset_reset_reg(ct->u.regs, TCG_REG_A3);
+ }
#endif
break;
case 'I':
@@ -516,67 +518,6 @@ static inline void tcg_out_addi(TCGContext *s, TCGReg reg, TCGArg val)
}
}
-/* Helper routines for marshalling helper function arguments into
- * the correct registers and stack.
- * arg_num is where we want to put this argument, and is updated to be ready
- * for the next call. arg is the argument itself. Note that arg_num 0..3 is
- * real registers, 4+ on stack.
- *
- * We provide routines for arguments which are: immediate, 32 bit
- * value in register, 16 and 8 bit values in register (which must be zero
- * extended before use) and 64 bit value in a lo:hi register pair.
- */
-#define DEFINE_TCG_OUT_CALL_IARG(NAME, ARGPARAM) \
- static inline void NAME(TCGContext *s, int *arg_num, ARGPARAM) \
- { \
- if (*arg_num < 4) { \
- DEFINE_TCG_OUT_CALL_IARG_GET_ARG(tcg_target_call_iarg_regs[*arg_num]); \
- } else { \
- DEFINE_TCG_OUT_CALL_IARG_GET_ARG(TCG_REG_AT); \
- tcg_out_st(s, TCG_TYPE_I32, TCG_REG_AT, TCG_REG_SP, 4 * (*arg_num)); \
- } \
- (*arg_num)++; \
-}
-#define DEFINE_TCG_OUT_CALL_IARG_GET_ARG(A) \
- tcg_out_opc_imm(s, OPC_ANDI, A, arg, 0xff);
-DEFINE_TCG_OUT_CALL_IARG(tcg_out_call_iarg_reg8, TCGReg arg)
-#undef DEFINE_TCG_OUT_CALL_IARG_GET_ARG
-#define DEFINE_TCG_OUT_CALL_IARG_GET_ARG(A) \
- tcg_out_opc_imm(s, OPC_ANDI, A, arg, 0xffff);
-DEFINE_TCG_OUT_CALL_IARG(tcg_out_call_iarg_reg16, TCGReg arg)
-#undef DEFINE_TCG_OUT_CALL_IARG_GET_ARG
-#define DEFINE_TCG_OUT_CALL_IARG_GET_ARG(A) \
- tcg_out_movi(s, TCG_TYPE_I32, A, arg);
-DEFINE_TCG_OUT_CALL_IARG(tcg_out_call_iarg_imm32, TCGArg arg)
-#undef DEFINE_TCG_OUT_CALL_IARG_GET_ARG
-
-/* We don't use the macro for this one to avoid an unnecessary reg-reg
- move when storing to the stack. */
-static inline void tcg_out_call_iarg_reg32(TCGContext *s, int *arg_num,
- TCGReg arg)
-{
- if (*arg_num < 4) {
- tcg_out_mov(s, TCG_TYPE_I32, tcg_target_call_iarg_regs[*arg_num], arg);
- } else {
- tcg_out_st(s, TCG_TYPE_I32, arg, TCG_REG_SP, 4 * (*arg_num));
- }
- (*arg_num)++;
-}
-
-static inline void tcg_out_call_iarg_reg64(TCGContext *s, int *arg_num,
- TCGReg arg_low, TCGReg arg_high)
-{
- (*arg_num) = (*arg_num + 1) & ~1;
-
-#if defined(HOST_WORDS_BIGENDIAN)
- tcg_out_call_iarg_reg32(s, arg_num, arg_high);
- tcg_out_call_iarg_reg32(s, arg_num, arg_low);
-#else
- tcg_out_call_iarg_reg32(s, arg_num, arg_low);
- tcg_out_call_iarg_reg32(s, arg_num, arg_high);
-#endif
-}
-
static void tcg_out_brcond(TCGContext *s, TCGCond cond, TCGArg arg1,
TCGArg arg2, int label_index)
{
@@ -899,10 +840,24 @@ static void tcg_out_setcond2(TCGContext *s, TCGCond cond, TCGReg ret,
tcg_out_opc_reg(s, OPC_OR, ret, ret, TCG_REG_AT);
}
+static void tcg_out_call(TCGContext *s, tcg_insn_unit *arg)
+{
+ /* Note that the ABI requires the called function's address to be
+ loaded into T9, even if a direct branch is in range. */
+ tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_T9, (uintptr_t)arg);
+
+ /* But do try a direct branch, allowing the cpu better insn prefetch. */
+ if (!tcg_out_opc_jmp(s, OPC_JAL, arg)) {
+ tcg_out_opc_reg(s, OPC_JALR, TCG_REG_RA, TCG_REG_T9, 0);
+ }
+
+ tcg_out_nop(s);
+}
+
#if defined(CONFIG_SOFTMMU)
/* helper signature: helper_ld_mmu(CPUState *env, target_ulong addr,
int mmu_idx) */
-static const void * const qemu_ld_helpers[4] = {
+static void * const qemu_ld_helpers[4] = {
helper_ldb_mmu,
helper_ldw_mmu,
helper_ldl_mmu,
@@ -911,385 +866,424 @@ static const void * const qemu_ld_helpers[4] = {
/* helper signature: helper_st_mmu(CPUState *env, target_ulong addr,
uintxx_t val, int mmu_idx) */
-static const void * const qemu_st_helpers[4] = {
+static void * const qemu_st_helpers[4] = {
helper_stb_mmu,
helper_stw_mmu,
helper_stl_mmu,
helper_stq_mmu,
};
-#endif
-static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args,
- int opc)
+/* Helper routines for marshalling helper function arguments into
+ * the correct registers and stack.
+ * I is where we want to put this argument, and is updated and returned
+ * for the next call. ARG is the argument itself.
+ *
+ * We provide routines for arguments which are: immediate, 32 bit
+ * value in register, 16 and 8 bit values in register (which must be zero
+ * extended before use) and 64 bit value in a lo:hi register pair.
+ */
+
+static int tcg_out_call_iarg_reg(TCGContext *s, int i, TCGReg arg)
{
- TCGReg addr_regl, data_regl, data_regh, data_reg1, data_reg2;
-#if defined(CONFIG_SOFTMMU)
- tcg_insn_unit *label1_ptr, *label2_ptr;
- int arg_num;
- int mem_index, s_bits;
- int addr_meml;
-# if TARGET_LONG_BITS == 64
- tcg_insn_unit *label3_ptr;
- TCGReg addr_regh;
- int addr_memh;
-# endif
-#endif
- data_regl = *args++;
- if (opc == 3)
- data_regh = *args++;
- else
- data_regh = 0;
- addr_regl = *args++;
-#if defined(CONFIG_SOFTMMU)
-# if TARGET_LONG_BITS == 64
- addr_regh = *args++;
-# if defined(HOST_WORDS_BIGENDIAN)
- addr_memh = 0;
- addr_meml = 4;
-# else
- addr_memh = 4;
- addr_meml = 0;
-# endif
-# else
- addr_meml = 0;
-# endif
- mem_index = *args;
- s_bits = opc & 3;
-#endif
+ if (i < ARRAY_SIZE(tcg_target_call_iarg_regs)) {
+ tcg_out_mov(s, TCG_TYPE_REG, tcg_target_call_iarg_regs[i], arg);
+ } else {
+ tcg_out_st(s, TCG_TYPE_REG, arg, TCG_REG_SP, 4 * i);
+ }
+ return i + 1;
+}
- if (opc == 3) {
-#if defined(HOST_WORDS_BIGENDIAN)
- data_reg1 = data_regh;
- data_reg2 = data_regl;
-#else
- data_reg1 = data_regl;
- data_reg2 = data_regh;
-#endif
+static int tcg_out_call_iarg_reg8(TCGContext *s, int i, TCGReg arg)
+{
+ TCGReg tmp = TCG_REG_AT;
+ if (i < ARRAY_SIZE(tcg_target_call_iarg_regs)) {
+ tmp = tcg_target_call_iarg_regs[i];
+ }
+ tcg_out_opc_imm(s, OPC_ANDI, tmp, arg, 0xff);
+ return tcg_out_call_iarg_reg(s, i, tmp);
+}
+
+static int tcg_out_call_iarg_reg16(TCGContext *s, int i, TCGReg arg)
+{
+ TCGReg tmp = TCG_REG_AT;
+ if (i < ARRAY_SIZE(tcg_target_call_iarg_regs)) {
+ tmp = tcg_target_call_iarg_regs[i];
+ }
+ tcg_out_opc_imm(s, OPC_ANDI, tmp, arg, 0xffff);
+ return tcg_out_call_iarg_reg(s, i, tmp);
+}
+
+static int tcg_out_call_iarg_imm(TCGContext *s, int i, TCGArg arg)
+{
+ TCGReg tmp = TCG_REG_AT;
+ if (arg == 0) {
+ tmp = TCG_REG_ZERO;
} else {
- data_reg1 = data_regl;
- data_reg2 = 0;
+ if (i < ARRAY_SIZE(tcg_target_call_iarg_regs)) {
+ tmp = tcg_target_call_iarg_regs[i];
+ }
+ tcg_out_movi(s, TCG_TYPE_REG, tmp, arg);
}
-#if defined(CONFIG_SOFTMMU)
- tcg_out_opc_sa(s, OPC_SRL, TCG_REG_A0, addr_regl, TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS);
- tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_A0, TCG_REG_A0, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS);
+ return tcg_out_call_iarg_reg(s, i, tmp);
+}
+
+static int tcg_out_call_iarg_reg2(TCGContext *s, int i, TCGReg al, TCGReg ah)
+{
+ i = (i + 1) & ~1;
+ i = tcg_out_call_iarg_reg(s, i, (MIPS_BE ? ah : al));
+ i = tcg_out_call_iarg_reg(s, i, (MIPS_BE ? al : ah));
+ return i;
+}
+
+/* Perform the tlb comparison operation. The complete host address is
+ placed in BASE. Clobbers AT, T0, A0. */
+static void tcg_out_tlb_load(TCGContext *s, TCGReg base, TCGReg addrl,
+ TCGReg addrh, int mem_index, TCGMemOp s_bits,
+ tcg_insn_unit *label_ptr[2], bool is_load)
+{
+ int cmp_off
+ = (is_load
+ ? offsetof(CPUArchState, tlb_table[mem_index][0].addr_read)
+ : offsetof(CPUArchState, tlb_table[mem_index][0].addr_write));
+ int add_off = offsetof(CPUArchState, tlb_table[mem_index][0].addend);
+
+ tcg_out_opc_sa(s, OPC_SRL, TCG_REG_A0, addrl,
+ TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS);
+ tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_A0, TCG_REG_A0,
+ (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS);
tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_A0, TCG_REG_A0, TCG_AREG0);
- tcg_out_opc_imm(s, OPC_LW, TCG_REG_AT, TCG_REG_A0,
- offsetof(CPUArchState, tlb_table[mem_index][0].addr_read) + addr_meml);
- tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_T0, TARGET_PAGE_MASK | ((1 << s_bits) - 1));
- tcg_out_opc_reg(s, OPC_AND, TCG_REG_T0, TCG_REG_T0, addr_regl);
-# if TARGET_LONG_BITS == 64
- label3_ptr = s->code_ptr;
+ /* Compensate for very large offsets. */
+ if (add_off >= 0x8000) {
+ /* Most target env are smaller than 32k; none are larger than 64k.
+ Simplify the logic here merely to offset by 0x7ff0, giving us a
+ range just shy of 64k. Check this assumption. */
+ QEMU_BUILD_BUG_ON(offsetof(CPUArchState,
+ tlb_table[NB_MMU_MODES - 1][1])
+ > 0x7ff0 + 0x7fff);
+ tcg_out_opc_imm(s, OPC_ADDIU, TCG_REG_A0, TCG_REG_A0, 0x7ff0);
+ cmp_off -= 0x7ff0;
+ add_off -= 0x7ff0;
+ }
+
+ /* Load the tlb comparator. */
+ tcg_out_opc_imm(s, OPC_LW, TCG_REG_AT, TCG_REG_A0, cmp_off + LO_OFF);
+ if (TARGET_LONG_BITS == 64) {
+ tcg_out_opc_imm(s, OPC_LW, base, TCG_REG_A0, cmp_off + HI_OFF);
+ }
+
+ /* Mask the page bits, keeping the alignment bits to compare against.
+ In between, load the tlb addend for the fast path. */
+ tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_T0,
+ TARGET_PAGE_MASK | ((1 << s_bits) - 1));
+ tcg_out_opc_imm(s, OPC_LW, TCG_REG_A0, TCG_REG_A0, add_off);
+ tcg_out_opc_reg(s, OPC_AND, TCG_REG_T0, TCG_REG_T0, addrl);
+
+ label_ptr[0] = s->code_ptr;
tcg_out_opc_br(s, OPC_BNE, TCG_REG_T0, TCG_REG_AT);
- tcg_out_nop(s);
- tcg_out_opc_imm(s, OPC_LW, TCG_REG_AT, TCG_REG_A0,
- offsetof(CPUArchState, tlb_table[mem_index][0].addr_read) + addr_memh);
+ if (TARGET_LONG_BITS == 64) {
+ /* delay slot */
+ tcg_out_nop(s);
- label1_ptr = s->code_ptr;
- tcg_out_opc_br(s, OPC_BEQ, addr_regh, TCG_REG_AT);
- tcg_out_nop(s);
+ label_ptr[1] = s->code_ptr;
+ tcg_out_opc_br(s, OPC_BNE, addrh, base);
+ }
- reloc_pc16(label3_ptr, s->code_ptr);
-# else
- label1_ptr = s->code_ptr;
- tcg_out_opc_br(s, OPC_BEQ, TCG_REG_T0, TCG_REG_AT);
- tcg_out_nop(s);
-# endif
-
- /* slow path */
- arg_num = 0;
- tcg_out_call_iarg_reg32(s, &arg_num, TCG_AREG0);
-# if TARGET_LONG_BITS == 64
- tcg_out_call_iarg_reg64(s, &arg_num, addr_regl, addr_regh);
-# else
- tcg_out_call_iarg_reg32(s, &arg_num, addr_regl);
-# endif
- tcg_out_call_iarg_imm32(s, &arg_num, mem_index);
- tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_T9, (tcg_target_long)qemu_ld_helpers[s_bits]);
- tcg_out_opc_reg(s, OPC_JALR, TCG_REG_RA, TCG_REG_T9, 0);
- tcg_out_nop(s);
+ /* delay slot */
+ tcg_out_opc_reg(s, OPC_ADDU, base, TCG_REG_A0, addrl);
+}
- switch(opc) {
- case 0:
- tcg_out_opc_imm(s, OPC_ANDI, data_reg1, TCG_REG_V0, 0xff);
+static void add_qemu_ldst_label(TCGContext *s, int is_ld, TCGMemOp opc,
+ TCGReg datalo, TCGReg datahi,
+ TCGReg addrlo, TCGReg addrhi,
+ int mem_index, void *raddr,
+ tcg_insn_unit *label_ptr[2])
+{
+ TCGLabelQemuLdst *label = new_ldst_label(s);
+
+ label->is_ld = is_ld;
+ label->opc = opc;
+ label->datalo_reg = datalo;
+ label->datahi_reg = datahi;
+ label->addrlo_reg = addrlo;
+ label->addrhi_reg = addrhi;
+ label->mem_index = mem_index;
+ label->raddr = raddr;
+ label->label_ptr[0] = label_ptr[0];
+ if (TARGET_LONG_BITS == 64) {
+ label->label_ptr[1] = label_ptr[1];
+ }
+}
+
+static void tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *l)
+{
+ TCGMemOp opc = l->opc;
+ int i;
+
+ /* resolve label address */
+ reloc_pc16(l->label_ptr[0], s->code_ptr);
+ if (TARGET_LONG_BITS == 64) {
+ reloc_pc16(l->label_ptr[1], s->code_ptr);
+ }
+
+ i = 0;
+ i = tcg_out_call_iarg_reg(s, i, TCG_AREG0);
+ if (TARGET_LONG_BITS == 64) {
+ i = tcg_out_call_iarg_reg2(s, i, l->addrlo_reg, l->addrhi_reg);
+ } else {
+ i = tcg_out_call_iarg_reg(s, i, l->addrlo_reg);
+ }
+ i = tcg_out_call_iarg_imm(s, i, l->mem_index);
+ tcg_out_call(s, qemu_ld_helpers[opc & MO_SIZE]);
+
+ switch (opc & MO_SSIZE) {
+ case MO_UB:
+ tcg_out_opc_imm(s, OPC_ANDI, l->datalo_reg, TCG_REG_V0, 0xff);
break;
- case 0 | 4:
- tcg_out_ext8s(s, data_reg1, TCG_REG_V0);
+ case MO_SB:
+ tcg_out_ext8s(s, l->datalo_reg, TCG_REG_V0);
break;
- case 1:
- tcg_out_opc_imm(s, OPC_ANDI, data_reg1, TCG_REG_V0, 0xffff);
+ case MO_UW:
+ tcg_out_opc_imm(s, OPC_ANDI, l->datalo_reg, TCG_REG_V0, 0xffff);
break;
- case 1 | 4:
- tcg_out_ext16s(s, data_reg1, TCG_REG_V0);
+ case MO_SW:
+ tcg_out_ext16s(s, l->datalo_reg, TCG_REG_V0);
break;
- case 2:
- tcg_out_mov(s, TCG_TYPE_I32, data_reg1, TCG_REG_V0);
+ case MO_UL:
+ tcg_out_mov(s, TCG_TYPE_I32, l->datalo_reg, TCG_REG_V0);
break;
- case 3:
- tcg_out_mov(s, TCG_TYPE_I32, data_reg2, TCG_REG_V1);
- tcg_out_mov(s, TCG_TYPE_I32, data_reg1, TCG_REG_V0);
+ case MO_Q:
+ /* We eliminated V0 from the possible output registers, so it
+ cannot be clobbered here. So we must move V1 first. */
+ tcg_out_mov(s, TCG_TYPE_I32, MIPS_BE ? l->datalo_reg : l->datahi_reg,
+ TCG_REG_V1);
+ tcg_out_mov(s, TCG_TYPE_I32, MIPS_BE ? l->datahi_reg : l->datalo_reg,
+ TCG_REG_V0);
break;
default:
tcg_abort();
}
- label2_ptr = s->code_ptr;
+ reloc_pc16(s->code_ptr, l->raddr);
tcg_out_opc_br(s, OPC_BEQ, TCG_REG_ZERO, TCG_REG_ZERO);
tcg_out_nop(s);
+}
- /* label1: fast path */
- reloc_pc16(label1_ptr, s->code_ptr);
+static void tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *l)
+{
+ TCGMemOp opc = l->opc;
+ TCGMemOp s_bits = opc & MO_SIZE;
+ int i;
+
+ /* resolve label address */
+ reloc_pc16(l->label_ptr[0], s->code_ptr);
+ if (TARGET_LONG_BITS == 64) {
+ reloc_pc16(l->label_ptr[1], s->code_ptr);
+ }
- tcg_out_opc_imm(s, OPC_LW, TCG_REG_A0, TCG_REG_A0,
- offsetof(CPUArchState, 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) {
- tcg_out_opc_imm(s, OPC_ADDIU, TCG_REG_V0, addr_regl, GUEST_BASE);
+ i = 0;
+ i = tcg_out_call_iarg_reg(s, i, TCG_AREG0);
+ if (TARGET_LONG_BITS == 64) {
+ i = tcg_out_call_iarg_reg2(s, i, l->addrlo_reg, l->addrhi_reg);
} else {
- tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_V0, GUEST_BASE);
- tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_V0, TCG_REG_V0, addr_regl);
+ i = tcg_out_call_iarg_reg(s, i, l->addrlo_reg);
+ }
+ switch (s_bits) {
+ case MO_8:
+ i = tcg_out_call_iarg_reg8(s, i, l->datalo_reg);
+ break;
+ case MO_16:
+ i = tcg_out_call_iarg_reg16(s, i, l->datalo_reg);
+ break;
+ case MO_32:
+ i = tcg_out_call_iarg_reg(s, i, l->datalo_reg);
+ break;
+ case MO_64:
+ i = tcg_out_call_iarg_reg2(s, i, l->datalo_reg, l->datahi_reg);
+ break;
+ default:
+ tcg_abort();
}
+ i = tcg_out_call_iarg_imm(s, i, l->mem_index);
+ tcg_out_call(s, qemu_st_helpers[s_bits]);
+
+ reloc_pc16(s->code_ptr, l->raddr);
+ tcg_out_opc_br(s, OPC_BEQ, TCG_REG_ZERO, TCG_REG_ZERO);
+ tcg_out_nop(s);
+}
#endif
- switch(opc) {
- case 0:
- tcg_out_opc_imm(s, OPC_LBU, data_reg1, TCG_REG_V0, 0);
+static void tcg_out_qemu_ld_direct(TCGContext *s, TCGReg datalo, TCGReg datahi,
+ TCGReg base, TCGMemOp opc)
+{
+ switch (opc) {
+ case MO_UB:
+ tcg_out_opc_imm(s, OPC_LBU, datalo, base, 0);
break;
- case 0 | 4:
- tcg_out_opc_imm(s, OPC_LB, data_reg1, TCG_REG_V0, 0);
+ case MO_SB:
+ tcg_out_opc_imm(s, OPC_LB, datalo, base, 0);
break;
- case 1:
- if (TCG_NEED_BSWAP) {
- tcg_out_opc_imm(s, OPC_LHU, TCG_REG_T0, TCG_REG_V0, 0);
- tcg_out_bswap16(s, data_reg1, TCG_REG_T0);
- } else {
- tcg_out_opc_imm(s, OPC_LHU, data_reg1, TCG_REG_V0, 0);
- }
+ case MO_UW | MO_BSWAP:
+ tcg_out_opc_imm(s, OPC_LHU, TCG_REG_T0, base, 0);
+ tcg_out_bswap16(s, datalo, TCG_REG_T0);
break;
- case 1 | 4:
- if (TCG_NEED_BSWAP) {
- tcg_out_opc_imm(s, OPC_LHU, TCG_REG_T0, TCG_REG_V0, 0);
- tcg_out_bswap16s(s, data_reg1, TCG_REG_T0);
- } else {
- tcg_out_opc_imm(s, OPC_LH, data_reg1, TCG_REG_V0, 0);
- }
+ case MO_UW:
+ tcg_out_opc_imm(s, OPC_LHU, datalo, base, 0);
break;
- case 2:
- if (TCG_NEED_BSWAP) {
- tcg_out_opc_imm(s, OPC_LW, TCG_REG_T0, TCG_REG_V0, 0);
- tcg_out_bswap32(s, data_reg1, TCG_REG_T0);
- } else {
- tcg_out_opc_imm(s, OPC_LW, data_reg1, TCG_REG_V0, 0);
- }
+ case MO_SW | MO_BSWAP:
+ tcg_out_opc_imm(s, OPC_LHU, TCG_REG_T0, base, 0);
+ tcg_out_bswap16s(s, datalo, TCG_REG_T0);
break;
- case 3:
- if (TCG_NEED_BSWAP) {
- tcg_out_opc_imm(s, OPC_LW, TCG_REG_T0, TCG_REG_V0, 4);
- tcg_out_bswap32(s, data_reg1, TCG_REG_T0);
- tcg_out_opc_imm(s, OPC_LW, TCG_REG_T0, TCG_REG_V0, 0);
- tcg_out_bswap32(s, data_reg2, TCG_REG_T0);
- } else {
- tcg_out_opc_imm(s, OPC_LW, data_reg1, TCG_REG_V0, 0);
- tcg_out_opc_imm(s, OPC_LW, data_reg2, TCG_REG_V0, 4);
- }
+ case MO_SW:
+ tcg_out_opc_imm(s, OPC_LH, datalo, base, 0);
+ break;
+ case MO_UL | MO_BSWAP:
+ tcg_out_opc_imm(s, OPC_LW, TCG_REG_T0, base, 0);
+ tcg_out_bswap32(s, datalo, TCG_REG_T0);
+ break;
+ case MO_UL:
+ tcg_out_opc_imm(s, OPC_LW, datalo, base, 0);
+ break;
+ case MO_Q | MO_BSWAP:
+ tcg_out_opc_imm(s, OPC_LW, TCG_REG_T0, base, HI_OFF);
+ tcg_out_bswap32(s, datalo, TCG_REG_T0);
+ tcg_out_opc_imm(s, OPC_LW, TCG_REG_T0, base, LO_OFF);
+ tcg_out_bswap32(s, datahi, TCG_REG_T0);
+ break;
+ case MO_Q:
+ tcg_out_opc_imm(s, OPC_LW, datalo, base, LO_OFF);
+ tcg_out_opc_imm(s, OPC_LW, datahi, base, HI_OFF);
break;
default:
tcg_abort();
}
-
-#if defined(CONFIG_SOFTMMU)
- reloc_pc16(label2_ptr, s->code_ptr);
-#endif
}
-static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args,
- int opc)
+static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, TCGMemOp opc)
{
- TCGReg addr_regl, data_regl, data_regh, data_reg1, data_reg2;
+ TCGReg addr_regl, addr_regh __attribute__((unused));
+ TCGReg data_regl, data_regh;
#if defined(CONFIG_SOFTMMU)
- tcg_insn_unit *label1_ptr, *label2_ptr;
- int arg_num;
- int mem_index, s_bits;
- int addr_meml;
-#endif
-#if TARGET_LONG_BITS == 64
-# if defined(CONFIG_SOFTMMU)
- tcg_insn_unit *label3_ptr;
- TCGReg addr_regh;
- int addr_memh;
-# endif
+ tcg_insn_unit *label_ptr[2];
+ int mem_index;
+ TCGMemOp s_bits;
#endif
+ /* Note that we've eliminated V0 from the output registers,
+ so we won't overwrite the base register during loading. */
+ TCGReg base = TCG_REG_V0;
+
data_regl = *args++;
- if (opc == 3) {
- data_regh = *args++;
- } else {
- data_regh = 0;
- }
+ data_regh = ((opc & MO_SIZE) == MO_64 ? *args++ : 0);
addr_regl = *args++;
+ addr_regh = (TARGET_LONG_BITS == 64 ? *args++ : 0);
+
#if defined(CONFIG_SOFTMMU)
-# if TARGET_LONG_BITS == 64
- addr_regh = *args++;
-# if defined(HOST_WORDS_BIGENDIAN)
- addr_memh = 0;
- addr_meml = 4;
-# else
- addr_memh = 4;
- addr_meml = 0;
-# endif
-# else
- addr_meml = 0;
-# endif
mem_index = *args;
- s_bits = opc;
-#endif
+ s_bits = opc & MO_SIZE;
- if (opc == 3) {
-#if defined(HOST_WORDS_BIGENDIAN)
- data_reg1 = data_regh;
- data_reg2 = data_regl;
+ tcg_out_tlb_load(s, base, addr_regl, addr_regh, mem_index,
+ s_bits, label_ptr, 1);
+ tcg_out_qemu_ld_direct(s, data_regl, data_regh, base, opc);
+ add_qemu_ldst_label(s, 1, opc, data_regl, data_regh, addr_regl, addr_regh,
+ mem_index, s->code_ptr, label_ptr);
#else
- data_reg1 = data_regl;
- data_reg2 = data_regh;
-#endif
+ if (GUEST_BASE == 0 && data_regl != addr_regl) {
+ base = addr_regl;
+ } else if (GUEST_BASE == (int16_t)GUEST_BASE) {
+ tcg_out_opc_imm(s, OPC_ADDIU, base, addr_regl, GUEST_BASE);
} else {
- data_reg1 = data_regl;
- data_reg2 = 0;
+ tcg_out_movi(s, TCG_TYPE_PTR, base, GUEST_BASE);
+ tcg_out_opc_reg(s, OPC_ADDU, base, base, addr_regl);
}
+ tcg_out_qemu_ld_direct(s, data_regl, data_regh, base, opc);
+#endif
+}
-#if defined(CONFIG_SOFTMMU)
- tcg_out_opc_sa(s, OPC_SRL, TCG_REG_A0, addr_regl, TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS);
- tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_A0, TCG_REG_A0, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS);
- tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_A0, TCG_REG_A0, TCG_AREG0);
- tcg_out_opc_imm(s, OPC_LW, TCG_REG_AT, TCG_REG_A0,
- offsetof(CPUArchState, tlb_table[mem_index][0].addr_write) + addr_meml);
- tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_T0, TARGET_PAGE_MASK | ((1 << s_bits) - 1));
- tcg_out_opc_reg(s, OPC_AND, TCG_REG_T0, TCG_REG_T0, addr_regl);
-
-# if TARGET_LONG_BITS == 64
- label3_ptr = s->code_ptr;
- tcg_out_opc_br(s, OPC_BNE, TCG_REG_T0, TCG_REG_AT);
- tcg_out_nop(s);
-
- tcg_out_opc_imm(s, OPC_LW, TCG_REG_AT, TCG_REG_A0,
- offsetof(CPUArchState, tlb_table[mem_index][0].addr_write) + addr_memh);
-
- label1_ptr = s->code_ptr;
- tcg_out_opc_br(s, OPC_BEQ, addr_regh, TCG_REG_AT);
- tcg_out_nop(s);
+static void tcg_out_qemu_st_direct(TCGContext *s, TCGReg datalo, TCGReg datahi,
+ TCGReg base, TCGMemOp opc)
+{
+ switch (opc) {
+ case MO_8:
+ tcg_out_opc_imm(s, OPC_SB, datalo, base, 0);
+ break;
- reloc_pc16(label3_ptr, s->code_ptr);
-# else
- label1_ptr = s->code_ptr;
- tcg_out_opc_br(s, OPC_BEQ, TCG_REG_T0, TCG_REG_AT);
- tcg_out_nop(s);
-# endif
-
- /* slow path */
- arg_num = 0;
- tcg_out_call_iarg_reg32(s, &arg_num, TCG_AREG0);
-# if TARGET_LONG_BITS == 64
- tcg_out_call_iarg_reg64(s, &arg_num, addr_regl, addr_regh);
-# else
- tcg_out_call_iarg_reg32(s, &arg_num, addr_regl);
-# endif
- switch(opc) {
- case 0:
- tcg_out_call_iarg_reg8(s, &arg_num, data_regl);
+ case MO_16 | MO_BSWAP:
+ tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_T0, datalo, 0xffff);
+ tcg_out_bswap16(s, TCG_REG_T0, TCG_REG_T0);
+ datalo = TCG_REG_T0;
+ /* FALLTHRU */
+ case MO_16:
+ tcg_out_opc_imm(s, OPC_SH, datalo, base, 0);
break;
- case 1:
- tcg_out_call_iarg_reg16(s, &arg_num, data_regl);
+
+ case MO_32 | MO_BSWAP:
+ tcg_out_bswap32(s, TCG_REG_T0, datalo);
+ datalo = TCG_REG_T0;
+ /* FALLTHRU */
+ case MO_32:
+ tcg_out_opc_imm(s, OPC_SW, datalo, base, 0);
break;
- case 2:
- tcg_out_call_iarg_reg32(s, &arg_num, data_regl);
+
+ case MO_64 | MO_BSWAP:
+ tcg_out_bswap32(s, TCG_REG_T0, datalo);
+ tcg_out_opc_imm(s, OPC_SW, TCG_REG_T0, base, HI_OFF);
+ tcg_out_bswap32(s, TCG_REG_T0, datahi);
+ tcg_out_opc_imm(s, OPC_SW, TCG_REG_T0, base, LO_OFF);
break;
- case 3:
- tcg_out_call_iarg_reg64(s, &arg_num, data_regl, data_regh);
+ case MO_64:
+ tcg_out_opc_imm(s, OPC_SW, datalo, base, LO_OFF);
+ tcg_out_opc_imm(s, OPC_SW, datahi, base, HI_OFF);
break;
+
default:
tcg_abort();
}
- tcg_out_call_iarg_imm32(s, &arg_num, mem_index);
- tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_T9, (tcg_target_long)qemu_st_helpers[s_bits]);
- tcg_out_opc_reg(s, OPC_JALR, TCG_REG_RA, TCG_REG_T9, 0);
- tcg_out_nop(s);
+}
- label2_ptr = s->code_ptr;
- tcg_out_opc_br(s, OPC_BEQ, TCG_REG_ZERO, TCG_REG_ZERO);
- tcg_out_nop(s);
+static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, TCGMemOp opc)
+{
+ TCGReg addr_regl, addr_regh __attribute__((unused));
+ TCGReg data_regl, data_regh, base;
+#if defined(CONFIG_SOFTMMU)
+ tcg_insn_unit *label_ptr[2];
+ int mem_index;
+ TCGMemOp s_bits;
+#endif
+
+ data_regl = *args++;
+ data_regh = ((opc & MO_SIZE) == MO_64 ? *args++ : 0);
+ addr_regl = *args++;
+ addr_regh = (TARGET_LONG_BITS == 64 ? *args++ : 0);
- /* label1: fast path */
- reloc_pc16(label1_ptr, s->code_ptr);
+#if defined(CONFIG_SOFTMMU)
+ mem_index = *args;
+ s_bits = opc & 3;
- tcg_out_opc_imm(s, OPC_LW, TCG_REG_A0, TCG_REG_A0,
- offsetof(CPUArchState, tlb_table[mem_index][0].addend));
- tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_A0, TCG_REG_A0, addr_regl);
+ /* Note that we eliminated the helper's address argument,
+ so we can reuse that for the base. */
+ base = (TARGET_LONG_BITS == 32 ? TCG_REG_A1 : TCG_REG_A2);
+ tcg_out_tlb_load(s, base, addr_regl, addr_regh, mem_index,
+ s_bits, label_ptr, 1);
+ tcg_out_qemu_st_direct(s, data_regl, data_regh, base, opc);
+ add_qemu_ldst_label(s, 0, opc, data_regl, data_regh, addr_regl, addr_regh,
+ mem_index, s->code_ptr, label_ptr);
#else
- if (GUEST_BASE == (int16_t)GUEST_BASE) {
- tcg_out_opc_imm(s, OPC_ADDIU, TCG_REG_A0, addr_regl, GUEST_BASE);
+ if (GUEST_BASE == 0) {
+ base = addr_regl;
} else {
- tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_A0, GUEST_BASE);
- tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_A0, TCG_REG_A0, addr_regl);
- }
-
-#endif
-
- switch(opc) {
- case 0:
- tcg_out_opc_imm(s, OPC_SB, data_reg1, TCG_REG_A0, 0);
- break;
- case 1:
- if (TCG_NEED_BSWAP) {
- tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_T0, data_reg1, 0xffff);
- tcg_out_bswap16(s, TCG_REG_T0, TCG_REG_T0);
- tcg_out_opc_imm(s, OPC_SH, TCG_REG_T0, TCG_REG_A0, 0);
+ base = TCG_REG_A0;
+ if (GUEST_BASE == (int16_t)GUEST_BASE) {
+ tcg_out_opc_imm(s, OPC_ADDIU, base, addr_regl, GUEST_BASE);
} else {
- tcg_out_opc_imm(s, OPC_SH, data_reg1, TCG_REG_A0, 0);
+ tcg_out_movi(s, TCG_TYPE_PTR, base, GUEST_BASE);
+ tcg_out_opc_reg(s, OPC_ADDU, base, base, addr_regl);
}
- break;
- case 2:
- if (TCG_NEED_BSWAP) {
- tcg_out_bswap32(s, TCG_REG_T0, data_reg1);
- tcg_out_opc_imm(s, OPC_SW, TCG_REG_T0, TCG_REG_A0, 0);
- } else {
- tcg_out_opc_imm(s, OPC_SW, data_reg1, TCG_REG_A0, 0);
- }
- break;
- case 3:
- if (TCG_NEED_BSWAP) {
- tcg_out_bswap32(s, TCG_REG_T0, data_reg2);
- tcg_out_opc_imm(s, OPC_SW, TCG_REG_T0, TCG_REG_A0, 0);
- tcg_out_bswap32(s, TCG_REG_T0, data_reg1);
- tcg_out_opc_imm(s, OPC_SW, TCG_REG_T0, TCG_REG_A0, 4);
- } else {
- tcg_out_opc_imm(s, OPC_SW, data_reg1, TCG_REG_A0, 0);
- tcg_out_opc_imm(s, OPC_SW, data_reg2, TCG_REG_A0, 4);
- }
- break;
- default:
- tcg_abort();
}
-
-#if defined(CONFIG_SOFTMMU)
- reloc_pc16(label2_ptr, s->code_ptr);
+ tcg_out_qemu_st_direct(s, data_regl, data_regh, base, opc);
#endif
}
-static void tcg_out_call(TCGContext *s, tcg_insn_unit *arg)
-{
- /* Note that the ABI requires the called function's address to be
- loaded into T9, even if a direct branch is in range. */
- tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_T9, (uintptr_t)arg);
-
- /* But do try a direct branch, allowing the cpu better insn prefetch. */
- if (!tcg_out_opc_jmp(s, OPC_JAL, arg)) {
- tcg_out_opc_reg(s, OPC_JALR, TCG_REG_RA, TCG_REG_T9, 0);
- }
-
- tcg_out_nop(s);
-}
-
static inline void tcg_out_op(TCGContext *s, TCGOpcode opc,
const TCGArg *args, const int *const_args)
{
@@ -1545,34 +1539,34 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc,
break;
case INDEX_op_qemu_ld8u:
- tcg_out_qemu_ld(s, args, 0);
+ tcg_out_qemu_ld(s, args, MO_UB);
break;
case INDEX_op_qemu_ld8s:
- tcg_out_qemu_ld(s, args, 0 | 4);
+ tcg_out_qemu_ld(s, args, MO_SB);
break;
case INDEX_op_qemu_ld16u:
- tcg_out_qemu_ld(s, args, 1);
+ tcg_out_qemu_ld(s, args, MO_TEUW);
break;
case INDEX_op_qemu_ld16s:
- tcg_out_qemu_ld(s, args, 1 | 4);
+ tcg_out_qemu_ld(s, args, MO_TESW);
break;
case INDEX_op_qemu_ld32:
- tcg_out_qemu_ld(s, args, 2);
+ tcg_out_qemu_ld(s, args, MO_TEUL);
break;
case INDEX_op_qemu_ld64:
- tcg_out_qemu_ld(s, args, 3);
+ tcg_out_qemu_ld(s, args, MO_TEQ);
break;
case INDEX_op_qemu_st8:
- tcg_out_qemu_st(s, args, 0);
+ tcg_out_qemu_st(s, args, MO_UB);
break;
case INDEX_op_qemu_st16:
- tcg_out_qemu_st(s, args, 1);
+ tcg_out_qemu_st(s, args, MO_TEUW);
break;
case INDEX_op_qemu_st32:
- tcg_out_qemu_st(s, args, 2);
+ tcg_out_qemu_st(s, args, MO_TEUL);
break;
case INDEX_op_qemu_st64:
- tcg_out_qemu_st(s, args, 3);
+ tcg_out_qemu_st(s, args, MO_TEQ);
break;
case INDEX_op_mov_i32: /* Always emitted via tcg_out_mov. */
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-21 02:14:43 +0000