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qemu-patch-raspberry4/tcg/mips/tcg-target.c
Aurelien Jarno 18fec301cd tcg/mips: fix broken CONFIG_TCG_PASS_AREG0 code 
The CONFIG_TCG_PASS_AREG0 code for calling ld/st helpers was
broken in that it did not respect the ABI requirement that 64
bit values were passed in even-odd register pairs. The simplest
way to fix this is to implement some new utility functions
for marshalling function arguments into the correct registers
and stack, so that the code which sets up the address and
data arguments does not need to care whether there has been
a preceding env argument.

Based on commit 9716ef3b for ARM by Peter Maydell.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
2012-08-28 20:38:39 +02:00

1619 lines
49 KiB
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/*
* Tiny Code Generator for QEMU
*
* Copyright (c) 2008-2009 Arnaud Patard <arnaud.patard@rtp-net.org>
* Copyright (c) 2009 Aurelien Jarno <aurelien@aurel32.net>
* Based on i386/tcg-target.c - Copyright (c) 2008 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#if defined(TCG_TARGET_WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN)
# define TCG_NEED_BSWAP 0
#else
# define TCG_NEED_BSWAP 1
#endif
#ifndef NDEBUG
static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
"zero",
"at",
"v0",
"v1",
"a0",
"a1",
"a2",
"a3",
"t0",
"t1",
"t2",
"t3",
"t4",
"t5",
"t6",
"t7",
"s0",
"s1",
"s2",
"s3",
"s4",
"s5",
"s6",
"s7",
"t8",
"t9",
"k0",
"k1",
"gp",
"sp",
"fp",
"ra",
};
#endif
/* check if we really need so many registers :P */
static const int tcg_target_reg_alloc_order[] = {
TCG_REG_S0,
TCG_REG_S1,
TCG_REG_S2,
TCG_REG_S3,
TCG_REG_S4,
TCG_REG_S5,
TCG_REG_S6,
TCG_REG_S7,
TCG_REG_T1,
TCG_REG_T2,
TCG_REG_T3,
TCG_REG_T4,
TCG_REG_T5,
TCG_REG_T6,
TCG_REG_T7,
TCG_REG_T8,
TCG_REG_T9,
TCG_REG_A0,
TCG_REG_A1,
TCG_REG_A2,
TCG_REG_A3,
TCG_REG_V0,
TCG_REG_V1
};
static const int tcg_target_call_iarg_regs[4] = {
TCG_REG_A0,
TCG_REG_A1,
TCG_REG_A2,
TCG_REG_A3
};
static const int tcg_target_call_oarg_regs[2] = {
TCG_REG_V0,
TCG_REG_V1
};
static uint8_t *tb_ret_addr;
static inline uint32_t reloc_lo16_val (void *pc, tcg_target_long target)
{
return target & 0xffff;
}
static inline void reloc_lo16 (void *pc, tcg_target_long target)
{
*(uint32_t *) pc = (*(uint32_t *) pc & ~0xffff)
| reloc_lo16_val(pc, target);
}
static inline uint32_t reloc_hi16_val (void *pc, tcg_target_long target)
{
return (target >> 16) & 0xffff;
}
static inline void reloc_hi16 (void *pc, tcg_target_long target)
{
*(uint32_t *) pc = (*(uint32_t *) pc & ~0xffff)
| reloc_hi16_val(pc, target);
}
static inline uint32_t reloc_pc16_val (void *pc, tcg_target_long target)
{
int32_t disp;
disp = target - (tcg_target_long) pc - 4;
if (disp != (disp << 14) >> 14) {
tcg_abort ();
}
return (disp >> 2) & 0xffff;
}
static inline void reloc_pc16 (void *pc, tcg_target_long target)
{
*(uint32_t *) pc = (*(uint32_t *) pc & ~0xffff)
| reloc_pc16_val(pc, target);
}
static inline uint32_t reloc_26_val (void *pc, tcg_target_long target)
{
if ((((tcg_target_long)pc + 4) & 0xf0000000) != (target & 0xf0000000)) {
tcg_abort ();
}
return (target >> 2) & 0x3ffffff;
}
static inline void reloc_pc26 (void *pc, tcg_target_long target)
{
*(uint32_t *) pc = (*(uint32_t *) pc & ~0x3ffffff)
| reloc_26_val(pc, target);
}
static void patch_reloc(uint8_t *code_ptr, int type,
tcg_target_long value, tcg_target_long addend)
{
value += addend;
switch(type) {
case R_MIPS_LO16:
reloc_lo16(code_ptr, value);
break;
case R_MIPS_HI16:
reloc_hi16(code_ptr, value);
break;
case R_MIPS_PC16:
reloc_pc16(code_ptr, value);
break;
case R_MIPS_26:
reloc_pc26(code_ptr, value);
break;
default:
tcg_abort();
}
}
/* maximum number of register used for input function arguments */
static inline int tcg_target_get_call_iarg_regs_count(int flags)
{
return 4;
}
/* parse target specific constraints */
static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str)
{
const char *ct_str;
ct_str = *pct_str;
switch(ct_str[0]) {
case 'r':
ct->ct |= TCG_CT_REG;
tcg_regset_set(ct->u.regs, 0xffffffff);
break;
case 'C':
ct->ct |= TCG_CT_REG;
tcg_regset_clear(ct->u.regs);
tcg_regset_set_reg(ct->u.regs, TCG_REG_T9);
break;
case 'L': /* qemu_ld output arg constraint */
ct->ct |= TCG_CT_REG;
tcg_regset_set(ct->u.regs, 0xffffffff);
tcg_regset_reset_reg(ct->u.regs, TCG_REG_V0);
break;
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 defined(CONFIG_TCG_PASS_AREG0) && (TARGET_LONG_BITS == 64)
tcg_regset_reset_reg(ct->u.regs, TCG_REG_A2);
# endif
#endif
break;
case 'S': /* qemu_st constraint */
ct->ct |= TCG_CT_REG;
tcg_regset_set(ct->u.regs, 0xffffffff);
tcg_regset_reset_reg(ct->u.regs, TCG_REG_A0);
#if defined(CONFIG_SOFTMMU)
# if (defined(CONFIG_TCG_PASS_AREG0) && TARGET_LONG_BITS == 32) || \
(!defined(CONFIG_TCG_PASS_AREG0) && TARGET_LONG_BITS == 64)
tcg_regset_reset_reg(ct->u.regs, TCG_REG_A1);
# endif
tcg_regset_reset_reg(ct->u.regs, TCG_REG_A2);
# if defined(CONFIG_TCG_PASS_AREG0) && TARGET_LONG_BITS == 64
tcg_regset_reset_reg(ct->u.regs, TCG_REG_A3);
# endif
#endif
break;
case 'I':
ct->ct |= TCG_CT_CONST_U16;
break;
case 'J':
ct->ct |= TCG_CT_CONST_S16;
break;
case 'Z':
/* We are cheating a bit here, using the fact that the register
ZERO is also the register number 0. Hence there is no need
to check for const_args in each instruction. */
ct->ct |= TCG_CT_CONST_ZERO;
break;
default:
return -1;
}
ct_str++;
*pct_str = ct_str;
return 0;
}
/* test if a constant matches the constraint */
static inline int tcg_target_const_match(tcg_target_long val,
const TCGArgConstraint *arg_ct)
{
int ct;
ct = arg_ct->ct;
if (ct & TCG_CT_CONST)
return 1;
else if ((ct & TCG_CT_CONST_ZERO) && val == 0)
return 1;
else if ((ct & TCG_CT_CONST_U16) && val == (uint16_t)val)
return 1;
else if ((ct & TCG_CT_CONST_S16) && val == (int16_t)val)
return 1;
else
return 0;
}
/* instruction opcodes */
enum {
OPC_BEQ = 0x04 << 26,
OPC_BNE = 0x05 << 26,
OPC_ADDIU = 0x09 << 26,
OPC_SLTI = 0x0A << 26,
OPC_SLTIU = 0x0B << 26,
OPC_ANDI = 0x0C << 26,
OPC_ORI = 0x0D << 26,
OPC_XORI = 0x0E << 26,
OPC_LUI = 0x0F << 26,
OPC_LB = 0x20 << 26,
OPC_LH = 0x21 << 26,
OPC_LW = 0x23 << 26,
OPC_LBU = 0x24 << 26,
OPC_LHU = 0x25 << 26,
OPC_LWU = 0x27 << 26,
OPC_SB = 0x28 << 26,
OPC_SH = 0x29 << 26,
OPC_SW = 0x2B << 26,
OPC_SPECIAL = 0x00 << 26,
OPC_SLL = OPC_SPECIAL | 0x00,
OPC_SRL = OPC_SPECIAL | 0x02,
OPC_SRA = OPC_SPECIAL | 0x03,
OPC_SLLV = OPC_SPECIAL | 0x04,
OPC_SRLV = OPC_SPECIAL | 0x06,
OPC_SRAV = OPC_SPECIAL | 0x07,
OPC_JR = OPC_SPECIAL | 0x08,
OPC_JALR = OPC_SPECIAL | 0x09,
OPC_MFHI = OPC_SPECIAL | 0x10,
OPC_MFLO = OPC_SPECIAL | 0x12,
OPC_MULT = OPC_SPECIAL | 0x18,
OPC_MULTU = OPC_SPECIAL | 0x19,
OPC_DIV = OPC_SPECIAL | 0x1A,
OPC_DIVU = OPC_SPECIAL | 0x1B,
OPC_ADDU = OPC_SPECIAL | 0x21,
OPC_SUBU = OPC_SPECIAL | 0x23,
OPC_AND = OPC_SPECIAL | 0x24,
OPC_OR = OPC_SPECIAL | 0x25,
OPC_XOR = OPC_SPECIAL | 0x26,
OPC_NOR = OPC_SPECIAL | 0x27,
OPC_SLT = OPC_SPECIAL | 0x2A,
OPC_SLTU = OPC_SPECIAL | 0x2B,
OPC_SPECIAL3 = 0x1f << 26,
OPC_SEB = OPC_SPECIAL3 | 0x420,
OPC_SEH = OPC_SPECIAL3 | 0x620,
};
/*
* Type reg
*/
static inline void tcg_out_opc_reg(TCGContext *s, int opc, int rd, int rs, int rt)
{
int32_t inst;
inst = opc;
inst |= (rs & 0x1F) << 21;
inst |= (rt & 0x1F) << 16;
inst |= (rd & 0x1F) << 11;
tcg_out32(s, inst);
}
/*
* Type immediate
*/
static inline void tcg_out_opc_imm(TCGContext *s, int opc, int rt, int rs, int imm)
{
int32_t inst;
inst = opc;
inst |= (rs & 0x1F) << 21;
inst |= (rt & 0x1F) << 16;
inst |= (imm & 0xffff);
tcg_out32(s, inst);
}
/*
* Type branch
*/
static inline void tcg_out_opc_br(TCGContext *s, int opc, int rt, int rs)
{
/* We pay attention here to not modify the branch target by reading
the existing value and using it again. This ensure that caches and
memory are kept coherent during retranslation. */
uint16_t offset = (uint16_t)(*(uint32_t *) s->code_ptr);
tcg_out_opc_imm(s, opc, rt, rs, offset);
}
/*
* Type sa
*/
static inline void tcg_out_opc_sa(TCGContext *s, int opc, int rd, int rt, int sa)
{
int32_t inst;
inst = opc;
inst |= (rt & 0x1F) << 16;
inst |= (rd & 0x1F) << 11;
inst |= (sa & 0x1F) << 6;
tcg_out32(s, inst);
}
static inline void tcg_out_nop(TCGContext *s)
{
tcg_out32(s, 0);
}
static inline void tcg_out_mov(TCGContext *s, TCGType type,
TCGReg ret, TCGReg arg)
{
/* Simple reg-reg move, optimising out the 'do nothing' case */
if (ret != arg) {
tcg_out_opc_reg(s, OPC_ADDU, ret, arg, TCG_REG_ZERO);
}
}
static inline void tcg_out_movi(TCGContext *s, TCGType type,
TCGReg reg, tcg_target_long arg)
{
if (arg == (int16_t)arg) {
tcg_out_opc_imm(s, OPC_ADDIU, reg, TCG_REG_ZERO, arg);
} else if (arg == (uint16_t)arg) {
tcg_out_opc_imm(s, OPC_ORI, reg, TCG_REG_ZERO, arg);
} else {
tcg_out_opc_imm(s, OPC_LUI, reg, 0, arg >> 16);
tcg_out_opc_imm(s, OPC_ORI, reg, reg, arg & 0xffff);
}
}
static inline void tcg_out_bswap16(TCGContext *s, int ret, int arg)
{
/* ret and arg can't be register at */
if (ret == TCG_REG_AT || arg == TCG_REG_AT) {
tcg_abort();
}
tcg_out_opc_sa(s, OPC_SRL, TCG_REG_AT, arg, 8);
tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_AT, TCG_REG_AT, 0x00ff);
tcg_out_opc_sa(s, OPC_SLL, ret, arg, 8);
tcg_out_opc_imm(s, OPC_ANDI, ret, ret, 0xff00);
tcg_out_opc_reg(s, OPC_OR, ret, ret, TCG_REG_AT);
}
static inline void tcg_out_bswap16s(TCGContext *s, int ret, int arg)
{
/* ret and arg can't be register at */
if (ret == TCG_REG_AT || arg == TCG_REG_AT) {
tcg_abort();
}
tcg_out_opc_sa(s, OPC_SRL, TCG_REG_AT, arg, 8);
tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_AT, TCG_REG_AT, 0xff);
tcg_out_opc_sa(s, OPC_SLL, ret, arg, 24);
tcg_out_opc_sa(s, OPC_SRA, ret, ret, 16);
tcg_out_opc_reg(s, OPC_OR, ret, ret, TCG_REG_AT);
}
static inline void tcg_out_bswap32(TCGContext *s, int ret, int arg)
{
/* ret and arg must be different and can't be register at */
if (ret == arg || ret == TCG_REG_AT || arg == TCG_REG_AT) {
tcg_abort();
}
tcg_out_opc_sa(s, OPC_SLL, ret, arg, 24);
tcg_out_opc_sa(s, OPC_SRL, TCG_REG_AT, arg, 24);
tcg_out_opc_reg(s, OPC_OR, ret, ret, TCG_REG_AT);
tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_AT, arg, 0xff00);
tcg_out_opc_sa(s, OPC_SLL, TCG_REG_AT, TCG_REG_AT, 8);
tcg_out_opc_reg(s, OPC_OR, ret, ret, TCG_REG_AT);
tcg_out_opc_sa(s, OPC_SRL, TCG_REG_AT, arg, 8);
tcg_out_opc_imm(s, OPC_ANDI, TCG_REG_AT, TCG_REG_AT, 0xff00);
tcg_out_opc_reg(s, OPC_OR, ret, ret, TCG_REG_AT);
}
static inline void tcg_out_ext8s(TCGContext *s, int ret, int arg)
{
#ifdef _MIPS_ARCH_MIPS32R2
tcg_out_opc_reg(s, OPC_SEB, ret, 0, arg);
#else
tcg_out_opc_sa(s, OPC_SLL, ret, arg, 24);
tcg_out_opc_sa(s, OPC_SRA, ret, ret, 24);
#endif
}
static inline void tcg_out_ext16s(TCGContext *s, int ret, int arg)
{
#ifdef _MIPS_ARCH_MIPS32R2
tcg_out_opc_reg(s, OPC_SEH, ret, 0, arg);
#else
tcg_out_opc_sa(s, OPC_SLL, ret, arg, 16);
tcg_out_opc_sa(s, OPC_SRA, ret, ret, 16);
#endif
}
static inline void tcg_out_ldst(TCGContext *s, int opc, int arg,
int arg1, tcg_target_long arg2)
{
if (arg2 == (int16_t) arg2) {
tcg_out_opc_imm(s, opc, arg, arg1, arg2);
} else {
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_AT, arg2);
tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_AT, TCG_REG_AT, arg1);
tcg_out_opc_imm(s, opc, arg, TCG_REG_AT, 0);
}
}
static inline void tcg_out_ld(TCGContext *s, TCGType type, TCGReg arg,
TCGReg arg1, tcg_target_long arg2)
{
tcg_out_ldst(s, OPC_LW, arg, arg1, arg2);
}
static inline void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg,
TCGReg arg1, tcg_target_long arg2)
{
tcg_out_ldst(s, OPC_SW, arg, arg1, arg2);
}
static inline void tcg_out_addi(TCGContext *s, int reg, tcg_target_long val)
{
if (val == (int16_t)val) {
tcg_out_opc_imm(s, OPC_ADDIU, reg, reg, val);
} else {
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_AT, val);
tcg_out_opc_reg(s, OPC_ADDU, reg, reg, TCG_REG_AT);
}
}
/* 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, uint32_t 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(TCG_TARGET_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, int arg1,
int arg2, int label_index)
{
TCGLabel *l = &s->labels[label_index];
switch (cond) {
case TCG_COND_EQ:
tcg_out_opc_br(s, OPC_BEQ, arg1, arg2);
break;
case TCG_COND_NE:
tcg_out_opc_br(s, OPC_BNE, arg1, arg2);
break;
case TCG_COND_LT:
tcg_out_opc_reg(s, OPC_SLT, TCG_REG_AT, arg1, arg2);
tcg_out_opc_br(s, OPC_BNE, TCG_REG_AT, TCG_REG_ZERO);
break;
case TCG_COND_LTU:
tcg_out_opc_reg(s, OPC_SLTU, TCG_REG_AT, arg1, arg2);
tcg_out_opc_br(s, OPC_BNE, TCG_REG_AT, TCG_REG_ZERO);
break;
case TCG_COND_GE:
tcg_out_opc_reg(s, OPC_SLT, TCG_REG_AT, arg1, arg2);
tcg_out_opc_br(s, OPC_BEQ, TCG_REG_AT, TCG_REG_ZERO);
break;
case TCG_COND_GEU:
tcg_out_opc_reg(s, OPC_SLTU, TCG_REG_AT, arg1, arg2);
tcg_out_opc_br(s, OPC_BEQ, TCG_REG_AT, TCG_REG_ZERO);
break;
case TCG_COND_LE:
tcg_out_opc_reg(s, OPC_SLT, TCG_REG_AT, arg2, arg1);
tcg_out_opc_br(s, OPC_BEQ, TCG_REG_AT, TCG_REG_ZERO);
break;
case TCG_COND_LEU:
tcg_out_opc_reg(s, OPC_SLTU, TCG_REG_AT, arg2, arg1);
tcg_out_opc_br(s, OPC_BEQ, TCG_REG_AT, TCG_REG_ZERO);
break;
case TCG_COND_GT:
tcg_out_opc_reg(s, OPC_SLT, TCG_REG_AT, arg2, arg1);
tcg_out_opc_br(s, OPC_BNE, TCG_REG_AT, TCG_REG_ZERO);
break;
case TCG_COND_GTU:
tcg_out_opc_reg(s, OPC_SLTU, TCG_REG_AT, arg2, arg1);
tcg_out_opc_br(s, OPC_BNE, TCG_REG_AT, TCG_REG_ZERO);
break;
default:
tcg_abort();
break;
}
if (l->has_value) {
reloc_pc16(s->code_ptr - 4, l->u.value);
} else {
tcg_out_reloc(s, s->code_ptr - 4, R_MIPS_PC16, label_index, 0);
}
tcg_out_nop(s);
}
/* XXX: we implement it at the target level to avoid having to
handle cross basic blocks temporaries */
static void tcg_out_brcond2(TCGContext *s, TCGCond cond, int arg1,
int arg2, int arg3, int arg4, int label_index)
{
void *label_ptr;
switch(cond) {
case TCG_COND_NE:
tcg_out_brcond(s, TCG_COND_NE, arg2, arg4, label_index);
tcg_out_brcond(s, TCG_COND_NE, arg1, arg3, label_index);
return;
case TCG_COND_EQ:
break;
case TCG_COND_LT:
case TCG_COND_LE:
tcg_out_brcond(s, TCG_COND_LT, arg2, arg4, label_index);
break;
case TCG_COND_GT:
case TCG_COND_GE:
tcg_out_brcond(s, TCG_COND_GT, arg2, arg4, label_index);
break;
case TCG_COND_LTU:
case TCG_COND_LEU:
tcg_out_brcond(s, TCG_COND_LTU, arg2, arg4, label_index);
break;
case TCG_COND_GTU:
case TCG_COND_GEU:
tcg_out_brcond(s, TCG_COND_GTU, arg2, arg4, label_index);
break;
default:
tcg_abort();
}
label_ptr = s->code_ptr;
tcg_out_opc_br(s, OPC_BNE, arg2, arg4);
tcg_out_nop(s);
switch(cond) {
case TCG_COND_EQ:
tcg_out_brcond(s, TCG_COND_EQ, arg1, arg3, label_index);
break;
case TCG_COND_LT:
case TCG_COND_LTU:
tcg_out_brcond(s, TCG_COND_LTU, arg1, arg3, label_index);
break;
case TCG_COND_LE:
case TCG_COND_LEU:
tcg_out_brcond(s, TCG_COND_LEU, arg1, arg3, label_index);
break;
case TCG_COND_GT:
case TCG_COND_GTU:
tcg_out_brcond(s, TCG_COND_GTU, arg1, arg3, label_index);
break;
case TCG_COND_GE:
case TCG_COND_GEU:
tcg_out_brcond(s, TCG_COND_GEU, arg1, arg3, label_index);
break;
default:
tcg_abort();
}
reloc_pc16(label_ptr, (tcg_target_long) s->code_ptr);
}
static void tcg_out_setcond(TCGContext *s, TCGCond cond, int ret,
int arg1, int arg2)
{
switch (cond) {
case TCG_COND_EQ:
if (arg1 == 0) {
tcg_out_opc_imm(s, OPC_SLTIU, ret, arg2, 1);
} else if (arg2 == 0) {
tcg_out_opc_imm(s, OPC_SLTIU, ret, arg1, 1);
} else {
tcg_out_opc_reg(s, OPC_XOR, ret, arg1, arg2);
tcg_out_opc_imm(s, OPC_SLTIU, ret, ret, 1);
}
break;
case TCG_COND_NE:
if (arg1 == 0) {
tcg_out_opc_reg(s, OPC_SLTU, ret, TCG_REG_ZERO, arg2);
} else if (arg2 == 0) {
tcg_out_opc_reg(s, OPC_SLTU, ret, TCG_REG_ZERO, arg1);
} else {
tcg_out_opc_reg(s, OPC_XOR, ret, arg1, arg2);
tcg_out_opc_reg(s, OPC_SLTU, ret, TCG_REG_ZERO, ret);
}
break;
case TCG_COND_LT:
tcg_out_opc_reg(s, OPC_SLT, ret, arg1, arg2);
break;
case TCG_COND_LTU:
tcg_out_opc_reg(s, OPC_SLTU, ret, arg1, arg2);
break;
case TCG_COND_GE:
tcg_out_opc_reg(s, OPC_SLT, ret, arg1, arg2);
tcg_out_opc_imm(s, OPC_XORI, ret, ret, 1);
break;
case TCG_COND_GEU:
tcg_out_opc_reg(s, OPC_SLTU, ret, arg1, arg2);
tcg_out_opc_imm(s, OPC_XORI, ret, ret, 1);
break;
case TCG_COND_LE:
tcg_out_opc_reg(s, OPC_SLT, ret, arg2, arg1);
tcg_out_opc_imm(s, OPC_XORI, ret, ret, 1);
break;
case TCG_COND_LEU:
tcg_out_opc_reg(s, OPC_SLTU, ret, arg2, arg1);
tcg_out_opc_imm(s, OPC_XORI, ret, ret, 1);
break;
case TCG_COND_GT:
tcg_out_opc_reg(s, OPC_SLT, ret, arg2, arg1);
break;
case TCG_COND_GTU:
tcg_out_opc_reg(s, OPC_SLTU, ret, arg2, arg1);
break;
default:
tcg_abort();
break;
}
}
/* XXX: we implement it at the target level to avoid having to
handle cross basic blocks temporaries */
static void tcg_out_setcond2(TCGContext *s, TCGCond cond, int ret,
int arg1, int arg2, int arg3, int arg4)
{
switch (cond) {
case TCG_COND_EQ:
tcg_out_setcond(s, TCG_COND_EQ, TCG_REG_AT, arg2, arg4);
tcg_out_setcond(s, TCG_COND_EQ, TCG_REG_T0, arg1, arg3);
tcg_out_opc_reg(s, OPC_AND, ret, TCG_REG_AT, TCG_REG_T0);
return;
case TCG_COND_NE:
tcg_out_setcond(s, TCG_COND_NE, TCG_REG_AT, arg2, arg4);
tcg_out_setcond(s, TCG_COND_NE, TCG_REG_T0, arg1, arg3);
tcg_out_opc_reg(s, OPC_OR, ret, TCG_REG_AT, TCG_REG_T0);
return;
case TCG_COND_LT:
case TCG_COND_LE:
tcg_out_setcond(s, TCG_COND_LT, TCG_REG_AT, arg2, arg4);
break;
case TCG_COND_GT:
case TCG_COND_GE:
tcg_out_setcond(s, TCG_COND_GT, TCG_REG_AT, arg2, arg4);
break;
case TCG_COND_LTU:
case TCG_COND_LEU:
tcg_out_setcond(s, TCG_COND_LTU, TCG_REG_AT, arg2, arg4);
break;
case TCG_COND_GTU:
case TCG_COND_GEU:
tcg_out_setcond(s, TCG_COND_GTU, TCG_REG_AT, arg2, arg4);
break;
default:
tcg_abort();
break;
}
tcg_out_setcond(s, TCG_COND_EQ, TCG_REG_T0, arg2, arg4);
switch(cond) {
case TCG_COND_LT:
case TCG_COND_LTU:
tcg_out_setcond(s, TCG_COND_LTU, ret, arg1, arg3);
break;
case TCG_COND_LE:
case TCG_COND_LEU:
tcg_out_setcond(s, TCG_COND_LEU, ret, arg1, arg3);
break;
case TCG_COND_GT:
case TCG_COND_GTU:
tcg_out_setcond(s, TCG_COND_GTU, ret, arg1, arg3);
break;
case TCG_COND_GE:
case TCG_COND_GEU:
tcg_out_setcond(s, TCG_COND_GEU, ret, arg1, arg3);
break;
default:
tcg_abort();
}
tcg_out_opc_reg(s, OPC_AND, ret, ret, TCG_REG_T0);
tcg_out_opc_reg(s, OPC_OR, ret, ret, TCG_REG_AT);
}
#if defined(CONFIG_SOFTMMU)
#include "../../softmmu_defs.h"
#ifdef CONFIG_TCG_PASS_AREG0
/* helper signature: helper_ld_mmu(CPUState *env, target_ulong addr,
int mmu_idx) */
static const void * const qemu_ld_helpers[4] = {
helper_ldb_mmu,
helper_ldw_mmu,
helper_ldl_mmu,
helper_ldq_mmu,
};
/* helper signature: helper_st_mmu(CPUState *env, target_ulong addr,
uintxx_t val, int mmu_idx) */
static const void * const qemu_st_helpers[4] = {
helper_stb_mmu,
helper_stw_mmu,
helper_stl_mmu,
helper_stq_mmu,
};
#else
/* legacy helper signature: __ld_mmu(target_ulong addr, int
mmu_idx) */
static void *qemu_ld_helpers[4] = {
__ldb_mmu,
__ldw_mmu,
__ldl_mmu,
__ldq_mmu,
};
/* legacy helper signature: __st_mmu(target_ulong addr, uintxx_t val,
int mmu_idx) */
static void *qemu_st_helpers[4] = {
__stb_mmu,
__stw_mmu,
__stl_mmu,
__stq_mmu,
};
#endif
#endif
static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args,
int opc)
{
int addr_regl, addr_meml;
int data_regl, data_regh, data_reg1, data_reg2;
int mem_index, s_bits;
#if defined(CONFIG_SOFTMMU)
void *label1_ptr, *label2_ptr;
int arg_num;
#endif
#if TARGET_LONG_BITS == 64
# if defined(CONFIG_SOFTMMU)
uint8_t *label3_ptr;
# endif
int addr_regh, addr_memh;
#endif
data_regl = *args++;
if (opc == 3)
data_regh = *args++;
else
data_regh = 0;
addr_regl = *args++;
#if TARGET_LONG_BITS == 64
addr_regh = *args++;
#endif
mem_index = *args;
s_bits = opc & 3;
if (opc == 3) {
#if defined(TCG_TARGET_WORDS_BIGENDIAN)
data_reg1 = data_regh;
data_reg2 = data_regl;
#else
data_reg1 = data_regl;
data_reg2 = data_regh;
#endif
} else {
data_reg1 = data_regl;
data_reg2 = 0;
}
#if TARGET_LONG_BITS == 64
# if defined(TCG_TARGET_WORDS_BIGENDIAN)
addr_memh = 0;
addr_meml = 4;
# else
addr_memh = 4;
addr_meml = 0;
# endif
#else
addr_meml = 0;
#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_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;
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);
label1_ptr = s->code_ptr;
tcg_out_opc_br(s, OPC_BEQ, addr_regh, TCG_REG_AT);
tcg_out_nop(s);
reloc_pc16(label3_ptr, (tcg_target_long) 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;
# ifdef CONFIG_TCG_PASS_AREG0
tcg_out_call_iarg_reg32(s, &arg_num, TCG_AREG0);
# endif
# 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);
switch(opc) {
case 0:
tcg_out_opc_imm(s, OPC_ANDI, data_reg1, TCG_REG_V0, 0xff);
break;
case 0 | 4:
tcg_out_ext8s(s, data_reg1, TCG_REG_V0);
break;
case 1:
tcg_out_opc_imm(s, OPC_ANDI, data_reg1, TCG_REG_V0, 0xffff);
break;
case 1 | 4:
tcg_out_ext16s(s, data_reg1, TCG_REG_V0);
break;
case 2:
tcg_out_mov(s, TCG_TYPE_I32, data_reg1, 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);
break;
default:
tcg_abort();
}
label2_ptr = s->code_ptr;
tcg_out_opc_br(s, OPC_BEQ, TCG_REG_ZERO, TCG_REG_ZERO);
tcg_out_nop(s);
/* label1: fast path */
reloc_pc16(label1_ptr, (tcg_target_long) 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);
} 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);
}
#endif
switch(opc) {
case 0:
tcg_out_opc_imm(s, OPC_LBU, data_reg1, TCG_REG_V0, 0);
break;
case 0 | 4:
tcg_out_opc_imm(s, OPC_LB, data_reg1, TCG_REG_V0, 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);
}
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);
}
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);
}
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);
}
break;
default:
tcg_abort();
}
#if defined(CONFIG_SOFTMMU)
reloc_pc16(label2_ptr, (tcg_target_long) s->code_ptr);
#endif
}
static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args,
int opc)
{
int addr_regl, addr_meml;
int data_regl, data_regh, data_reg1, data_reg2;
int mem_index, s_bits;
#if defined(CONFIG_SOFTMMU)
uint8_t *label1_ptr, *label2_ptr;
int arg_num;
#endif
#if TARGET_LONG_BITS == 64
# if defined(CONFIG_SOFTMMU)
uint8_t *label3_ptr;
# endif
int addr_regh, addr_memh;
#endif
data_regl = *args++;
if (opc == 3) {
data_regh = *args++;
#if defined(TCG_TARGET_WORDS_BIGENDIAN)
data_reg1 = data_regh;
data_reg2 = data_regl;
#else
data_reg1 = data_regl;
data_reg2 = data_regh;
#endif
} else {
data_reg1 = data_regl;
data_reg2 = 0;
data_regh = 0;
}
addr_regl = *args++;
#if TARGET_LONG_BITS == 64
addr_regh = *args++;
# if defined(TCG_TARGET_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;
#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);
reloc_pc16(label3_ptr, (tcg_target_long) 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;
# ifdef CONFIG_TCG_PASS_AREG0
tcg_out_call_iarg_reg32(s, &arg_num, TCG_AREG0);
# endif
# 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);
break;
case 1:
tcg_out_call_iarg_reg16(s, &arg_num, data_regl);
break;
case 2:
tcg_out_call_iarg_reg32(s, &arg_num, data_regl);
break;
case 3:
tcg_out_call_iarg_reg64(s, &arg_num, data_regl, data_regh);
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);
/* label1: fast path */
reloc_pc16(label1_ptr, (tcg_target_long) 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_A0, TCG_REG_A0, addr_regl);
#else
if (GUEST_BASE == (int16_t)GUEST_BASE) {
tcg_out_opc_imm(s, OPC_ADDIU, TCG_REG_A0, addr_regl, GUEST_BASE);
} 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_bswap16(s, TCG_REG_T0, data_reg1);
tcg_out_opc_imm(s, OPC_SH, TCG_REG_T0, TCG_REG_A0, 0);
} else {
tcg_out_opc_imm(s, OPC_SH, data_reg1, TCG_REG_A0, 0);
}
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, (tcg_target_long) s->code_ptr);
#endif
}
static inline void tcg_out_op(TCGContext *s, TCGOpcode opc,
const TCGArg *args, const int *const_args)
{
switch(opc) {
case INDEX_op_exit_tb:
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_V0, args[0]);
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_AT, (tcg_target_long)tb_ret_addr);
tcg_out_opc_reg(s, OPC_JR, 0, TCG_REG_AT, 0);
tcg_out_nop(s);
break;
case INDEX_op_goto_tb:
if (s->tb_jmp_offset) {
/* direct jump method */
tcg_abort();
} else {
/* indirect jump method */
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_AT, (tcg_target_long)(s->tb_next + args[0]));
tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_AT, TCG_REG_AT, 0);
tcg_out_opc_reg(s, OPC_JR, 0, TCG_REG_AT, 0);
}
tcg_out_nop(s);
s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf;
break;
case INDEX_op_call:
tcg_out_opc_reg(s, OPC_JALR, TCG_REG_RA, args[0], 0);
tcg_out_nop(s);
break;
case INDEX_op_jmp:
tcg_out_opc_reg(s, OPC_JR, 0, args[0], 0);
tcg_out_nop(s);
break;
case INDEX_op_br:
tcg_out_brcond(s, TCG_COND_EQ, TCG_REG_ZERO, TCG_REG_ZERO, args[0]);
break;
case INDEX_op_mov_i32:
tcg_out_mov(s, TCG_TYPE_I32, args[0], args[1]);
break;
case INDEX_op_movi_i32:
tcg_out_movi(s, TCG_TYPE_I32, args[0], args[1]);
break;
case INDEX_op_ld8u_i32:
tcg_out_ldst(s, OPC_LBU, args[0], args[1], args[2]);
break;
case INDEX_op_ld8s_i32:
tcg_out_ldst(s, OPC_LB, args[0], args[1], args[2]);
break;
case INDEX_op_ld16u_i32:
tcg_out_ldst(s, OPC_LHU, args[0], args[1], args[2]);
break;
case INDEX_op_ld16s_i32:
tcg_out_ldst(s, OPC_LH, args[0], args[1], args[2]);
break;
case INDEX_op_ld_i32:
tcg_out_ldst(s, OPC_LW, args[0], args[1], args[2]);
break;
case INDEX_op_st8_i32:
tcg_out_ldst(s, OPC_SB, args[0], args[1], args[2]);
break;
case INDEX_op_st16_i32:
tcg_out_ldst(s, OPC_SH, args[0], args[1], args[2]);
break;
case INDEX_op_st_i32:
tcg_out_ldst(s, OPC_SW, args[0], args[1], args[2]);
break;
case INDEX_op_add_i32:
if (const_args[2]) {
tcg_out_opc_imm(s, OPC_ADDIU, args[0], args[1], args[2]);
} else {
tcg_out_opc_reg(s, OPC_ADDU, args[0], args[1], args[2]);
}
break;
case INDEX_op_add2_i32:
if (const_args[4]) {
tcg_out_opc_imm(s, OPC_ADDIU, TCG_REG_AT, args[2], args[4]);
} else {
tcg_out_opc_reg(s, OPC_ADDU, TCG_REG_AT, args[2], args[4]);
}
tcg_out_opc_reg(s, OPC_SLTU, TCG_REG_T0, TCG_REG_AT, args[2]);
if (const_args[5]) {
tcg_out_opc_imm(s, OPC_ADDIU, args[1], args[3], args[5]);
} else {
tcg_out_opc_reg(s, OPC_ADDU, args[1], args[3], args[5]);
}
tcg_out_opc_reg(s, OPC_ADDU, args[1], args[1], TCG_REG_T0);
tcg_out_mov(s, TCG_TYPE_I32, args[0], TCG_REG_AT);
break;
case INDEX_op_sub_i32:
if (const_args[2]) {
tcg_out_opc_imm(s, OPC_ADDIU, args[0], args[1], -args[2]);
} else {
tcg_out_opc_reg(s, OPC_SUBU, args[0], args[1], args[2]);
}
break;
case INDEX_op_sub2_i32:
if (const_args[4]) {
tcg_out_opc_imm(s, OPC_ADDIU, TCG_REG_AT, args[2], -args[4]);
} else {
tcg_out_opc_reg(s, OPC_SUBU, TCG_REG_AT, args[2], args[4]);
}
tcg_out_opc_reg(s, OPC_SLTU, TCG_REG_T0, args[2], TCG_REG_AT);
if (const_args[5]) {
tcg_out_opc_imm(s, OPC_ADDIU, args[1], args[3], -args[5]);
} else {
tcg_out_opc_reg(s, OPC_SUBU, args[1], args[3], args[5]);
}
tcg_out_opc_reg(s, OPC_SUBU, args[1], args[1], TCG_REG_T0);
tcg_out_mov(s, TCG_TYPE_I32, args[0], TCG_REG_AT);
break;
case INDEX_op_mul_i32:
tcg_out_opc_reg(s, OPC_MULT, 0, args[1], args[2]);
tcg_out_opc_reg(s, OPC_MFLO, args[0], 0, 0);
break;
case INDEX_op_mulu2_i32:
tcg_out_opc_reg(s, OPC_MULTU, 0, args[2], args[3]);
tcg_out_opc_reg(s, OPC_MFLO, args[0], 0, 0);
tcg_out_opc_reg(s, OPC_MFHI, args[1], 0, 0);
break;
case INDEX_op_div_i32:
tcg_out_opc_reg(s, OPC_DIV, 0, args[1], args[2]);
tcg_out_opc_reg(s, OPC_MFLO, args[0], 0, 0);
break;
case INDEX_op_divu_i32:
tcg_out_opc_reg(s, OPC_DIVU, 0, args[1], args[2]);
tcg_out_opc_reg(s, OPC_MFLO, args[0], 0, 0);
break;
case INDEX_op_rem_i32:
tcg_out_opc_reg(s, OPC_DIV, 0, args[1], args[2]);
tcg_out_opc_reg(s, OPC_MFHI, args[0], 0, 0);
break;
case INDEX_op_remu_i32:
tcg_out_opc_reg(s, OPC_DIVU, 0, args[1], args[2]);
tcg_out_opc_reg(s, OPC_MFHI, args[0], 0, 0);
break;
case INDEX_op_and_i32:
if (const_args[2]) {
tcg_out_opc_imm(s, OPC_ANDI, args[0], args[1], args[2]);
} else {
tcg_out_opc_reg(s, OPC_AND, args[0], args[1], args[2]);
}
break;
case INDEX_op_or_i32:
if (const_args[2]) {
tcg_out_opc_imm(s, OPC_ORI, args[0], args[1], args[2]);
} else {
tcg_out_opc_reg(s, OPC_OR, args[0], args[1], args[2]);
}
break;
case INDEX_op_nor_i32:
tcg_out_opc_reg(s, OPC_NOR, args[0], args[1], args[2]);
break;
case INDEX_op_not_i32:
tcg_out_opc_reg(s, OPC_NOR, args[0], TCG_REG_ZERO, args[1]);
break;
case INDEX_op_xor_i32:
if (const_args[2]) {
tcg_out_opc_imm(s, OPC_XORI, args[0], args[1], args[2]);
} else {
tcg_out_opc_reg(s, OPC_XOR, args[0], args[1], args[2]);
}
break;
case INDEX_op_sar_i32:
if (const_args[2]) {
tcg_out_opc_sa(s, OPC_SRA, args[0], args[1], args[2]);
} else {
tcg_out_opc_reg(s, OPC_SRAV, args[0], args[2], args[1]);
}
break;
case INDEX_op_shl_i32:
if (const_args[2]) {
tcg_out_opc_sa(s, OPC_SLL, args[0], args[1], args[2]);
} else {
tcg_out_opc_reg(s, OPC_SLLV, args[0], args[2], args[1]);
}
break;
case INDEX_op_shr_i32:
if (const_args[2]) {
tcg_out_opc_sa(s, OPC_SRL, args[0], args[1], args[2]);
} else {
tcg_out_opc_reg(s, OPC_SRLV, args[0], args[2], args[1]);
}
break;
case INDEX_op_ext8s_i32:
tcg_out_ext8s(s, args[0], args[1]);
break;
case INDEX_op_ext16s_i32:
tcg_out_ext16s(s, args[0], args[1]);
break;
case INDEX_op_brcond_i32:
tcg_out_brcond(s, args[2], args[0], args[1], args[3]);
break;
case INDEX_op_brcond2_i32:
tcg_out_brcond2(s, args[4], args[0], args[1], args[2], args[3], args[5]);
break;
case INDEX_op_setcond_i32:
tcg_out_setcond(s, args[3], args[0], args[1], args[2]);
break;
case INDEX_op_setcond2_i32:
tcg_out_setcond2(s, args[5], args[0], args[1], args[2], args[3], args[4]);
break;
case INDEX_op_qemu_ld8u:
tcg_out_qemu_ld(s, args, 0);
break;
case INDEX_op_qemu_ld8s:
tcg_out_qemu_ld(s, args, 0 | 4);
break;
case INDEX_op_qemu_ld16u:
tcg_out_qemu_ld(s, args, 1);
break;
case INDEX_op_qemu_ld16s:
tcg_out_qemu_ld(s, args, 1 | 4);
break;
case INDEX_op_qemu_ld32:
tcg_out_qemu_ld(s, args, 2);
break;
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;
case INDEX_op_qemu_st16:
tcg_out_qemu_st(s, args, 1);
break;
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;
default:
tcg_abort();
}
}
static const TCGTargetOpDef mips_op_defs[] = {
{ INDEX_op_exit_tb, { } },
{ INDEX_op_goto_tb, { } },
{ INDEX_op_call, { "C" } },
{ INDEX_op_jmp, { "r" } },
{ INDEX_op_br, { } },
{ INDEX_op_mov_i32, { "r", "r" } },
{ INDEX_op_movi_i32, { "r" } },
{ INDEX_op_ld8u_i32, { "r", "r" } },
{ INDEX_op_ld8s_i32, { "r", "r" } },
{ INDEX_op_ld16u_i32, { "r", "r" } },
{ INDEX_op_ld16s_i32, { "r", "r" } },
{ INDEX_op_ld_i32, { "r", "r" } },
{ INDEX_op_st8_i32, { "rZ", "r" } },
{ INDEX_op_st16_i32, { "rZ", "r" } },
{ INDEX_op_st_i32, { "rZ", "r" } },
{ INDEX_op_add_i32, { "r", "rZ", "rJZ" } },
{ INDEX_op_mul_i32, { "r", "rZ", "rZ" } },
{ INDEX_op_mulu2_i32, { "r", "r", "rZ", "rZ" } },
{ INDEX_op_div_i32, { "r", "rZ", "rZ" } },
{ INDEX_op_divu_i32, { "r", "rZ", "rZ" } },
{ INDEX_op_rem_i32, { "r", "rZ", "rZ" } },
{ INDEX_op_remu_i32, { "r", "rZ", "rZ" } },
{ INDEX_op_sub_i32, { "r", "rZ", "rJZ" } },
{ INDEX_op_and_i32, { "r", "rZ", "rIZ" } },
{ INDEX_op_nor_i32, { "r", "rZ", "rZ" } },
{ INDEX_op_not_i32, { "r", "rZ" } },
{ INDEX_op_or_i32, { "r", "rZ", "rIZ" } },
{ INDEX_op_xor_i32, { "r", "rZ", "rIZ" } },
{ INDEX_op_shl_i32, { "r", "rZ", "riZ" } },
{ INDEX_op_shr_i32, { "r", "rZ", "riZ" } },
{ INDEX_op_sar_i32, { "r", "rZ", "riZ" } },
{ INDEX_op_ext8s_i32, { "r", "rZ" } },
{ INDEX_op_ext16s_i32, { "r", "rZ" } },
{ INDEX_op_brcond_i32, { "rZ", "rZ" } },
{ INDEX_op_setcond_i32, { "r", "rZ", "rZ" } },
{ INDEX_op_setcond2_i32, { "r", "rZ", "rZ", "rZ", "rZ" } },
{ INDEX_op_add2_i32, { "r", "r", "rZ", "rZ", "rJZ", "rJZ" } },
{ INDEX_op_sub2_i32, { "r", "r", "rZ", "rZ", "rJZ", "rJZ" } },
{ INDEX_op_brcond2_i32, { "rZ", "rZ", "rZ", "rZ" } },
#if TARGET_LONG_BITS == 32
{ INDEX_op_qemu_ld8u, { "L", "lZ" } },
{ INDEX_op_qemu_ld8s, { "L", "lZ" } },
{ INDEX_op_qemu_ld16u, { "L", "lZ" } },
{ INDEX_op_qemu_ld16s, { "L", "lZ" } },
{ INDEX_op_qemu_ld32, { "L", "lZ" } },
{ INDEX_op_qemu_ld64, { "L", "L", "lZ" } },
{ INDEX_op_qemu_st8, { "SZ", "SZ" } },
{ INDEX_op_qemu_st16, { "SZ", "SZ" } },
{ INDEX_op_qemu_st32, { "SZ", "SZ" } },
{ INDEX_op_qemu_st64, { "SZ", "SZ", "SZ" } },
#else
{ INDEX_op_qemu_ld8u, { "L", "lZ", "lZ" } },
{ INDEX_op_qemu_ld8s, { "L", "lZ", "lZ" } },
{ INDEX_op_qemu_ld16u, { "L", "lZ", "lZ" } },
{ INDEX_op_qemu_ld16s, { "L", "lZ", "lZ" } },
{ INDEX_op_qemu_ld32, { "L", "lZ", "lZ" } },
{ INDEX_op_qemu_ld64, { "L", "L", "lZ", "lZ" } },
{ INDEX_op_qemu_st8, { "SZ", "SZ", "SZ" } },
{ INDEX_op_qemu_st16, { "SZ", "SZ", "SZ" } },
{ INDEX_op_qemu_st32, { "SZ", "SZ", "SZ" } },
{ INDEX_op_qemu_st64, { "SZ", "SZ", "SZ", "SZ" } },
#endif
{ -1 },
};
static int tcg_target_callee_save_regs[] = {
TCG_REG_S0, /* used for the global env (TCG_AREG0) */
TCG_REG_S1,
TCG_REG_S2,
TCG_REG_S3,
TCG_REG_S4,
TCG_REG_S5,
TCG_REG_S6,
TCG_REG_S7,
TCG_REG_GP,
TCG_REG_FP,
TCG_REG_RA, /* should be last for ABI compliance */
};
/* Generate global QEMU prologue and epilogue code */
static void tcg_target_qemu_prologue(TCGContext *s)
{
int i, frame_size;
/* reserve some stack space */
frame_size = ARRAY_SIZE(tcg_target_callee_save_regs) * 4
+ TCG_STATIC_CALL_ARGS_SIZE;
frame_size = (frame_size + TCG_TARGET_STACK_ALIGN - 1) &
~(TCG_TARGET_STACK_ALIGN - 1);
/* TB prologue */
tcg_out_addi(s, TCG_REG_SP, -frame_size);
for(i = 0 ; i < ARRAY_SIZE(tcg_target_callee_save_regs) ; i++) {
tcg_out_st(s, TCG_TYPE_I32, tcg_target_callee_save_regs[i],
TCG_REG_SP, TCG_STATIC_CALL_ARGS_SIZE + i * 4);
}
/* Call generated code */
tcg_out_opc_reg(s, OPC_JR, 0, tcg_target_call_iarg_regs[1], 0);
tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]);
tb_ret_addr = s->code_ptr;
/* TB epilogue */
for(i = 0 ; i < ARRAY_SIZE(tcg_target_callee_save_regs) ; i++) {
tcg_out_ld(s, TCG_TYPE_I32, tcg_target_callee_save_regs[i],
TCG_REG_SP, TCG_STATIC_CALL_ARGS_SIZE + i * 4);
}
tcg_out_opc_reg(s, OPC_JR, 0, TCG_REG_RA, 0);
tcg_out_addi(s, TCG_REG_SP, frame_size);
}
static void tcg_target_init(TCGContext *s)
{
tcg_regset_set(tcg_target_available_regs[TCG_TYPE_I32], 0xffffffff);
tcg_regset_set(tcg_target_call_clobber_regs,
(1 << TCG_REG_V0) |
(1 << TCG_REG_V1) |
(1 << TCG_REG_A0) |
(1 << TCG_REG_A1) |
(1 << TCG_REG_A2) |
(1 << TCG_REG_A3) |
(1 << TCG_REG_T1) |
(1 << TCG_REG_T2) |
(1 << TCG_REG_T3) |
(1 << TCG_REG_T4) |
(1 << TCG_REG_T5) |
(1 << TCG_REG_T6) |
(1 << TCG_REG_T7) |
(1 << TCG_REG_T8) |
(1 << TCG_REG_T9));
tcg_regset_clear(s->reserved_regs);
tcg_regset_set_reg(s->reserved_regs, TCG_REG_ZERO); /* zero register */
tcg_regset_set_reg(s->reserved_regs, TCG_REG_K0); /* kernel use only */
tcg_regset_set_reg(s->reserved_regs, TCG_REG_K1); /* kernel use only */
tcg_regset_set_reg(s->reserved_regs, TCG_REG_AT); /* internal use */
tcg_regset_set_reg(s->reserved_regs, TCG_REG_T0); /* internal use */
tcg_regset_set_reg(s->reserved_regs, TCG_REG_RA); /* return address */
tcg_regset_set_reg(s->reserved_regs, TCG_REG_SP); /* stack pointer */
tcg_add_target_add_op_defs(mips_op_defs);
tcg_set_frame(s, TCG_AREG0, offsetof(CPUArchState, temp_buf),
CPU_TEMP_BUF_NLONGS * sizeof(long));
}
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