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qemu/tcg/sparc/tcg-target.c
blueswir1 8384dd67fe Implement byte swapping accesses 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4574 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-25 11:19:24 +00:00

1147 lines
34 KiB
C
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/*
* Tiny Code Generator for QEMU
*
* 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.
*/
static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
"%g0",
"%g1",
"%g2",
"%g3",
"%g4",
"%g5",
"%g6",
"%g7",
"%o0",
"%o1",
"%o2",
"%o3",
"%o4",
"%o5",
"%o6",
"%o7",
"%l0",
"%l1",
"%l2",
"%l3",
"%l4",
"%l5",
"%l6",
"%l7",
"%i0",
"%i1",
"%i2",
"%i3",
"%i4",
"%i5",
"%i6",
"%i7",
};
static const int tcg_target_reg_alloc_order[] = {
TCG_REG_L0,
TCG_REG_L1,
TCG_REG_L2,
TCG_REG_L3,
TCG_REG_L4,
TCG_REG_L5,
TCG_REG_L6,
TCG_REG_L7,
TCG_REG_I0,
TCG_REG_I1,
TCG_REG_I2,
TCG_REG_I3,
TCG_REG_I4,
};
static const int tcg_target_call_iarg_regs[6] = {
TCG_REG_O0,
TCG_REG_O1,
TCG_REG_O2,
TCG_REG_O3,
TCG_REG_O4,
TCG_REG_O5,
};
static const int tcg_target_call_oarg_regs[2] = {
TCG_REG_O0,
TCG_REG_O1,
};
static inline int check_fit_tl(tcg_target_long val, unsigned int bits)
{
return (val << ((sizeof(tcg_target_long) * 8 - bits))
>> (sizeof(tcg_target_long) * 8 - bits)) == val;
}
static inline int check_fit_i32(uint32_t val, unsigned int bits)
{
return ((val << (32 - bits)) >> (32 - bits)) == val;
}
static void patch_reloc(uint8_t *code_ptr, int type,
tcg_target_long value, tcg_target_long addend)
{
value += addend;
switch (type) {
case R_SPARC_32:
if (value != (uint32_t)value)
tcg_abort();
*(uint32_t *)code_ptr = value;
break;
case R_SPARC_WDISP22:
value -= (long)code_ptr;
value >>= 2;
if (!check_fit_tl(value, 22))
tcg_abort();
*(uint32_t *)code_ptr = ((*(uint32_t *)code_ptr) & ~0x3fffff) | 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 6;
}
/* 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':
case 'L': /* qemu_ld/st constraint */
ct->ct |= TCG_CT_REG;
tcg_regset_set32(ct->u.regs, 0, 0xffffffff);
tcg_regset_reset_reg(ct->u.regs, TCG_REG_I0);
tcg_regset_reset_reg(ct->u.regs, TCG_REG_I1);
break;
case 'I':
ct->ct |= TCG_CT_CONST_S11;
break;
case 'J':
ct->ct |= TCG_CT_CONST_S13;
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_S11) && check_fit_tl(val, 11))
return 1;
else if ((ct & TCG_CT_CONST_S13) && check_fit_tl(val, 13))
return 1;
else
return 0;
}
#define INSN_OP(x) ((x) << 30)
#define INSN_OP2(x) ((x) << 22)
#define INSN_OP3(x) ((x) << 19)
#define INSN_OPF(x) ((x) << 5)
#define INSN_RD(x) ((x) << 25)
#define INSN_RS1(x) ((x) << 14)
#define INSN_RS2(x) (x)
#define INSN_ASI(x) ((x) << 5)
#define INSN_IMM13(x) ((1 << 13) | ((x) & 0x1fff))
#define INSN_OFF22(x) (((x) >> 2) & 0x3fffff)
#define INSN_COND(x, a) (((x) << 25) | ((a) << 29))
#define COND_N 0x0
#define COND_E 0x1
#define COND_LE 0x2
#define COND_L 0x3
#define COND_LEU 0x4
#define COND_CS 0x5
#define COND_NEG 0x6
#define COND_VS 0x7
#define COND_A 0x8
#define COND_NE 0x9
#define COND_G 0xa
#define COND_GE 0xb
#define COND_GU 0xc
#define COND_CC 0xd
#define COND_POS 0xe
#define COND_VC 0xf
#define BA (INSN_OP(0) | INSN_COND(COND_A, 0) | INSN_OP2(0x2))
#define ARITH_ADD (INSN_OP(2) | INSN_OP3(0x00))
#define ARITH_AND (INSN_OP(2) | INSN_OP3(0x01))
#define ARITH_OR (INSN_OP(2) | INSN_OP3(0x02))
#define ARITH_ORCC (INSN_OP(2) | INSN_OP3(0x12))
#define ARITH_XOR (INSN_OP(2) | INSN_OP3(0x03))
#define ARITH_SUB (INSN_OP(2) | INSN_OP3(0x04))
#define ARITH_SUBCC (INSN_OP(2) | INSN_OP3(0x14))
#define ARITH_ADDX (INSN_OP(2) | INSN_OP3(0x10))
#define ARITH_SUBX (INSN_OP(2) | INSN_OP3(0x0c))
#define ARITH_UMUL (INSN_OP(2) | INSN_OP3(0x0a))
#define ARITH_UDIV (INSN_OP(2) | INSN_OP3(0x0e))
#define ARITH_SDIV (INSN_OP(2) | INSN_OP3(0x0f))
#define ARITH_MULX (INSN_OP(2) | INSN_OP3(0x09))
#define ARITH_UDIVX (INSN_OP(2) | INSN_OP3(0x0d))
#define ARITH_SDIVX (INSN_OP(2) | INSN_OP3(0x2d))
#define SHIFT_SLL (INSN_OP(2) | INSN_OP3(0x25))
#define SHIFT_SRL (INSN_OP(2) | INSN_OP3(0x26))
#define SHIFT_SRA (INSN_OP(2) | INSN_OP3(0x27))
#define SHIFT_SLLX (INSN_OP(2) | INSN_OP3(0x25) | (1 << 12))
#define SHIFT_SRLX (INSN_OP(2) | INSN_OP3(0x26) | (1 << 12))
#define SHIFT_SRAX (INSN_OP(2) | INSN_OP3(0x27) | (1 << 12))
#define WRY (INSN_OP(2) | INSN_OP3(0x30))
#define JMPL (INSN_OP(2) | INSN_OP3(0x38))
#define SAVE (INSN_OP(2) | INSN_OP3(0x3c))
#define RESTORE (INSN_OP(2) | INSN_OP3(0x3d))
#define SETHI (INSN_OP(0) | INSN_OP2(0x4))
#define CALL INSN_OP(1)
#define LDUB (INSN_OP(3) | INSN_OP3(0x01))
#define LDSB (INSN_OP(3) | INSN_OP3(0x09))
#define LDUH (INSN_OP(3) | INSN_OP3(0x02))
#define LDSH (INSN_OP(3) | INSN_OP3(0x0a))
#define LDUW (INSN_OP(3) | INSN_OP3(0x00))
#define LDSW (INSN_OP(3) | INSN_OP3(0x08))
#define LDX (INSN_OP(3) | INSN_OP3(0x0b))
#define STB (INSN_OP(3) | INSN_OP3(0x05))
#define STH (INSN_OP(3) | INSN_OP3(0x06))
#define STW (INSN_OP(3) | INSN_OP3(0x04))
#define STX (INSN_OP(3) | INSN_OP3(0x0e))
#define LDUBA (INSN_OP(3) | INSN_OP3(0x11))
#define LDSBA (INSN_OP(3) | INSN_OP3(0x19))
#define LDUHA (INSN_OP(3) | INSN_OP3(0x12))
#define LDSHA (INSN_OP(3) | INSN_OP3(0x1a))
#define LDUWA (INSN_OP(3) | INSN_OP3(0x10))
#define LDSWA (INSN_OP(3) | INSN_OP3(0x18))
#define LDXA (INSN_OP(3) | INSN_OP3(0x1b))
#define STBA (INSN_OP(3) | INSN_OP3(0x15))
#define STHA (INSN_OP(3) | INSN_OP3(0x16))
#define STWA (INSN_OP(3) | INSN_OP3(0x14))
#define STXA (INSN_OP(3) | INSN_OP3(0x1e))
#ifndef ASI_PRIMARY_LITTLE
#define ASI_PRIMARY_LITTLE 0x88
#endif
static inline void tcg_out_arith(TCGContext *s, int rd, int rs1, int rs2,
int op)
{
tcg_out32(s, op | INSN_RD(rd) | INSN_RS1(rs1) |
INSN_RS2(rs2));
}
static inline void tcg_out_arithi(TCGContext *s, int rd, int rs1, int offset,
int op)
{
tcg_out32(s, op | INSN_RD(rd) | INSN_RS1(rs1) |
INSN_IMM13(offset));
}
static inline void tcg_out_mov(TCGContext *s, int ret, int arg)
{
tcg_out_arith(s, ret, arg, TCG_REG_G0, ARITH_OR);
}
static inline void tcg_out_sethi(TCGContext *s, int ret, uint32_t arg)
{
tcg_out32(s, SETHI | INSN_RD(ret) | ((arg & 0xfffffc00) >> 10));
}
static inline void tcg_out_movi_imm13(TCGContext *s, int ret, uint32_t arg)
{
tcg_out_arithi(s, ret, TCG_REG_G0, arg, ARITH_OR);
}
static inline void tcg_out_movi_imm32(TCGContext *s, int ret, uint32_t arg)
{
if (check_fit_i32(arg, 13))
tcg_out_movi_imm13(s, ret, arg);
else {
tcg_out_sethi(s, ret, arg);
if (arg & 0x3ff)
tcg_out_arithi(s, ret, ret, arg & 0x3ff, ARITH_OR);
}
}
static inline void tcg_out_movi(TCGContext *s, TCGType type,
int ret, tcg_target_long arg)
{
#if defined(__sparc_v9__) && !defined(__sparc_v8plus__)
if (!check_fit_tl(arg, 32) && (arg & ~0xffffffffULL) != 0) {
// XXX ret may be I5, need another temp
tcg_out_movi_imm32(s, TCG_REG_I5, arg >> 32);
tcg_out_arithi(s, TCG_REG_I5, TCG_REG_I5, 32, SHIFT_SLLX);
tcg_out_movi_imm32(s, ret, arg);
tcg_out_arith(s, ret, ret, TCG_REG_I5, ARITH_OR);
} else
#endif
tcg_out_movi_imm32(s, ret, arg);
}
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)
{
if (!check_fit_tl(arg, 10))
tcg_out_movi(s, TCG_TYPE_PTR, ret, arg & ~0x3ffULL);
#if defined(__sparc_v9__) && !defined(__sparc_v8plus__)
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));
#endif
}
static inline void tcg_out_ldst(TCGContext *s, int ret, int addr, int offset, int op)
{
if (check_fit_tl(offset, 13))
tcg_out32(s, op | INSN_RD(ret) | INSN_RS1(addr) |
INSN_IMM13(offset));
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));
}
}
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, int ret,
int 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);
}
static inline void tcg_out_st(TCGContext *s, TCGType type, int arg,
int 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);
}
static inline void tcg_out_sety(TCGContext *s, tcg_target_long val)
{
if (val == 0 || val == -1)
tcg_out32(s, WRY | INSN_IMM13(val));
else
fprintf(stderr, "unimplemented sety %ld\n", (long)val);
}
static inline void tcg_out_addi(TCGContext *s, int reg, tcg_target_long val)
{
if (val != 0) {
if (check_fit_tl(val, 13))
tcg_out_arithi(s, reg, reg, val, ARITH_ADD);
else {
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_I5, val);
tcg_out_arith(s, reg, reg, TCG_REG_I5, ARITH_ADD);
}
}
}
static inline void tcg_out_nop(TCGContext *s)
{
tcg_out_sethi(s, TCG_REG_G0, 0);
}
static void tcg_out_branch(TCGContext *s, int opc, int label_index)
{
int32_t val;
TCGLabel *l = &s->labels[label_index];
if (l->has_value) {
val = l->u.value - (tcg_target_long)s->code_ptr;
tcg_out32(s, (INSN_OP(0) | INSN_COND(opc, 0) | INSN_OP2(0x2)
| INSN_OFF22(l->u.value - (unsigned long)s->code_ptr)));
} else {
tcg_out_reloc(s, s->code_ptr, R_SPARC_WDISP22, label_index, 0);
tcg_out32(s, (INSN_OP(0) | INSN_COND(opc, 0) | INSN_OP2(0x2) | 0));
}
}
static const uint8_t tcg_cond_to_bcond[10] = {
[TCG_COND_EQ] = COND_E,
[TCG_COND_NE] = COND_NE,
[TCG_COND_LT] = COND_L,
[TCG_COND_GE] = COND_GE,
[TCG_COND_LE] = COND_LE,
[TCG_COND_GT] = COND_G,
[TCG_COND_LTU] = COND_CS,
[TCG_COND_GEU] = COND_CC,
[TCG_COND_LEU] = COND_LEU,
[TCG_COND_GTU] = COND_GU,
};
static void tcg_out_brcond(TCGContext *s, int cond,
TCGArg arg1, TCGArg arg2, int const_arg2,
int label_index)
{
if (const_arg2 && arg2 == 0)
/* orcc %g0, r, %g0 */
tcg_out_arith(s, TCG_REG_G0, TCG_REG_G0, arg1, ARITH_ORCC);
else
/* subcc r1, r2, %g0 */
tcg_out_arith(s, TCG_REG_G0, arg1, arg2, ARITH_SUBCC);
tcg_out_branch(s, tcg_cond_to_bcond[cond], label_index);
tcg_out_nop(s);
}
/* Generate global QEMU prologue and epilogue code */
void tcg_target_qemu_prologue(TCGContext *s)
{
tcg_out32(s, SAVE | INSN_RD(TCG_REG_O6) | INSN_RS1(TCG_REG_O6) |
INSN_IMM13(-TCG_TARGET_STACK_MINFRAME));
tcg_out32(s, JMPL | INSN_RD(TCG_REG_G0) | INSN_RS1(TCG_REG_I0) |
INSN_RS2(TCG_REG_G0));
tcg_out_nop(s);
}
#if defined(CONFIG_SOFTMMU)
extern void __ldb_mmu(void);
extern void __ldw_mmu(void);
extern void __ldl_mmu(void);
extern void __ldq_mmu(void);
extern void __stb_mmu(void);
extern void __stw_mmu(void);
extern void __stl_mmu(void);
extern void __stq_mmu(void);
static const void * const qemu_ld_helpers[4] = {
__ldb_mmu,
__ldw_mmu,
__ldl_mmu,
__ldq_mmu,
};
static const void * const qemu_st_helpers[4] = {
__stb_mmu,
__stw_mmu,
__stl_mmu,
__stq_mmu,
};
#endif
static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args,
int opc)
{
int addr_reg, data_reg, r0, r1, mem_index, s_bits, ld_op;
#if defined(CONFIG_SOFTMMU)
uint8_t *label1_ptr, *label2_ptr;
#endif
data_reg = *args++;
addr_reg = *args++;
mem_index = *args;
s_bits = opc & 3;
r0 = TCG_REG_I0;
r1 = TCG_REG_I1;
#if TARGET_LONG_BITS == 32
ld_op = LDUW;
#else
ld_op = LDX;
#endif
#if defined(CONFIG_SOFTMMU)
/* srl addr_reg, x, r1 */
tcg_out_arithi(s, r1, addr_reg, TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS,
SHIFT_SRL);
/* and addr_reg, x, r0 */
tcg_out_arithi(s, r0, addr_reg, TARGET_PAGE_MASK | ((1 << s_bits) - 1),
ARITH_AND);
/* and r1, x, r1 */
tcg_out_arithi(s, r1, r1, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS,
ARITH_AND);
/* add r1, x, r1 */
tcg_out_arithi(s, r1, r1, offsetof(CPUState, tlb_table[mem_index][0].addr_read),
ARITH_ADD);
/* ld [env + r1], r1 */
tcg_out_ldst(s, r1, TCG_AREG0, r1, ld_op);
/* subcc r0, r1, %g0 */
tcg_out_arith(s, TCG_REG_G0, r0, r1, ARITH_SUBCC);
/* will become:
be label1 */
label1_ptr = s->code_ptr;
tcg_out32(s, 0);
/* mov (delay slot)*/
tcg_out_mov(s, r0, addr_reg);
/* XXX: move that code at the end of the TB */
tcg_out32(s, CALL | ((((tcg_target_ulong)qemu_ld_helpers[s_bits]
- (tcg_target_ulong)s->code_ptr) >> 2)
& 0x3fffffff));
/* mov (delay slot)*/
tcg_out_movi(s, TCG_TYPE_I32, r1, mem_index);
switch(opc) {
case 0 | 4:
/* sll i0, 24/56, i0 */
tcg_out_arithi(s, TCG_REG_I0, TCG_REG_I0,
sizeof(tcg_target_long) * 8 - 8, SHIFT_SLL);
/* sra i0, 24/56, data_reg */
tcg_out_arithi(s, data_reg, TCG_REG_I0,
sizeof(tcg_target_long) * 8 - 8, SHIFT_SRA);
break;
case 1 | 4:
/* sll i0, 16/48, i0 */
tcg_out_arithi(s, TCG_REG_I0, TCG_REG_I0,
sizeof(tcg_target_long) * 8 - 16, SHIFT_SLL);
/* sra i0, 16/48, data_reg */
tcg_out_arithi(s, data_reg, TCG_REG_I0,
sizeof(tcg_target_long) * 8 - 16, SHIFT_SRA);
break;
case 2 | 4:
/* sll i0, 32, i0 */
tcg_out_arithi(s, TCG_REG_I0, TCG_REG_I0, 32, SHIFT_SLL);
/* sra i0, 32, data_reg */
tcg_out_arithi(s, data_reg, TCG_REG_I0, 32, SHIFT_SRA);
break;
case 0:
case 1:
case 2:
case 3:
default:
/* mov */
tcg_out_mov(s, data_reg, TCG_REG_I0);
break;
}
/* will become:
ba label2 */
label2_ptr = s->code_ptr;
tcg_out32(s, 0);
/* label1: */
*label1_ptr = (INSN_OP(0) | INSN_COND(COND_A, 0) | INSN_OP2(0x2) |
INSN_OFF22((unsigned long)label1_ptr -
(unsigned long)s->code_ptr));
/* ld [r1 + x], r1 */
tcg_out_ldst(s, r1, r1, offsetof(CPUTLBEntry, addend) -
offsetof(CPUTLBEntry, addr_read), ld_op);
/* add x(r1), r0 */
tcg_out_arith(s, r0, r1, r0, ARITH_ADD);
#else
r0 = addr_reg;
#endif
switch(opc) {
case 0:
/* ldub [r0], data_reg */
tcg_out_ldst(s, data_reg, r0, 0, LDUB);
break;
case 0 | 4:
/* ldsb [r0], data_reg */
tcg_out_ldst(s, data_reg, r0, 0, LDSB);
break;
case 1:
#ifdef TARGET_WORDS_BIGENDIAN
/* lduh [r0], data_reg */
tcg_out_ldst(s, data_reg, r0, 0, LDUH);
#else
/* lduha [r0] ASI_PRIMARY_LITTLE, data_reg */
tcg_out_ldst_asi(s, data_reg, r0, 0, LDUHA, ASI_PRIMARY_LITTLE);
#endif
break;
case 1 | 4:
#ifdef TARGET_WORDS_BIGENDIAN
/* ldsh [r0], data_reg */
tcg_out_ldst(s, data_reg, r0, 0, LDSH);
#else
/* ldsha [r0] ASI_PRIMARY_LITTLE, data_reg */
tcg_out_ldst_asi(s, data_reg, r0, 0, LDSHA, ASI_PRIMARY_LITTLE);
#endif
break;
case 2:
#ifdef TARGET_WORDS_BIGENDIAN
/* lduw [r0], data_reg */
tcg_out_ldst(s, data_reg, r0, 0, LDUW);
#else
/* lduwa [r0] ASI_PRIMARY_LITTLE, data_reg */
tcg_out_ldst_asi(s, data_reg, r0, 0, LDUWA, ASI_PRIMARY_LITTLE);
#endif
break;
case 2 | 4:
#ifdef TARGET_WORDS_BIGENDIAN
/* ldsw [r0], data_reg */
tcg_out_ldst(s, data_reg, r0, 0, LDSW);
#else
/* ldswa [r0] ASI_PRIMARY_LITTLE, data_reg */
tcg_out_ldst_asi(s, data_reg, r0, 0, LDSWA, ASI_PRIMARY_LITTLE);
#endif
break;
case 3:
#ifdef TARGET_WORDS_BIGENDIAN
/* ldx [r0], data_reg */
tcg_out_ldst(s, data_reg, r0, 0, LDX);
#else
/* ldxa [r0] ASI_PRIMARY_LITTLE, data_reg */
tcg_out_ldst_asi(s, data_reg, r0, 0, LDXA, ASI_PRIMARY_LITTLE);
#endif
break;
default:
tcg_abort();
}
#if defined(CONFIG_SOFTMMU)
/* label2: */
*label2_ptr = (INSN_OP(0) | INSN_COND(COND_A, 0) | INSN_OP2(0x2) |
INSN_OFF22((unsigned long)label2_ptr -
(unsigned long)s->code_ptr));
#endif
}
static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args,
int opc)
{
int addr_reg, data_reg, r0, r1, mem_index, s_bits, ld_op;
#if defined(CONFIG_SOFTMMU)
uint8_t *label1_ptr, *label2_ptr;
#endif
data_reg = *args++;
addr_reg = *args++;
mem_index = *args;
s_bits = opc;
r0 = TCG_REG_I5;
r1 = TCG_REG_I4;
#if TARGET_LONG_BITS == 32
ld_op = LDUW;
#else
ld_op = LDX;
#endif
#if defined(CONFIG_SOFTMMU)
/* srl addr_reg, x, r1 */
tcg_out_arithi(s, r1, addr_reg, TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS,
SHIFT_SRL);
/* and addr_reg, x, r0 */
tcg_out_arithi(s, r0, addr_reg, TARGET_PAGE_MASK | ((1 << s_bits) - 1),
ARITH_AND);
/* and r1, x, r1 */
tcg_out_arithi(s, r1, r1, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS,
ARITH_AND);
/* add r1, x, r1 */
tcg_out_arithi(s, r1, r1,
offsetof(CPUState, tlb_table[mem_index][0].addr_write),
ARITH_ADD);
/* ld [env + r1], r1 */
tcg_out_ldst(s, r1, TCG_AREG0, r1, ld_op);
/* subcc r0, r1, %g0 */
tcg_out_arith(s, TCG_REG_G0, r0, r1, ARITH_SUBCC);
/* will become:
be label1 */
label1_ptr = s->code_ptr;
tcg_out32(s, 0);
/* mov (delay slot)*/
tcg_out_mov(s, r0, addr_reg);
switch(opc) {
case 0 | 4:
/* sll i0, 24/56, i0 */
tcg_out_arithi(s, TCG_REG_I0, TCG_REG_I0,
sizeof(tcg_target_long) * 8 - 8, SHIFT_SLL);
/* sra i0, 24/56, data_reg */
tcg_out_arithi(s, data_reg, TCG_REG_I0,
sizeof(tcg_target_long) * 8 - 8, SHIFT_SRA);
break;
case 1 | 4:
/* sll i0, 16/48, i0 */
tcg_out_arithi(s, TCG_REG_I0, TCG_REG_I0,
sizeof(tcg_target_long) * 8 - 16, SHIFT_SLL);
/* sra i0, 16/48, data_reg */
tcg_out_arithi(s, data_reg, TCG_REG_I0,
sizeof(tcg_target_long) * 8 - 16, SHIFT_SRA);
break;
case 2 | 4:
/* sll i0, 32, i0 */
tcg_out_arithi(s, TCG_REG_I0, TCG_REG_I0, 32, SHIFT_SLL);
/* sra i0, 32, data_reg */
tcg_out_arithi(s, data_reg, TCG_REG_I0, 32, SHIFT_SRA);
break;
case 0:
case 1:
case 2:
case 3:
default:
/* mov */
tcg_out_mov(s, data_reg, TCG_REG_I0);
break;
}
tcg_out32(s, CALL | ((((tcg_target_ulong)qemu_st_helpers[s_bits]
- (tcg_target_ulong)s->code_ptr) >> 2)
& 0x3fffffff));
/* mov (delay slot)*/
tcg_out_movi(s, TCG_TYPE_I32, r1, mem_index);
/* will become:
ba label2 */
label2_ptr = s->code_ptr;
tcg_out32(s, 0);
/* label1: */
*label1_ptr = (INSN_OP(0) | INSN_COND(COND_A, 0) | INSN_OP2(0x2) |
INSN_OFF22((unsigned long)label1_ptr -
(unsigned long)s->code_ptr));
/* ld [r1 + x], r1 */
tcg_out_ldst(s, r1, r1, offsetof(CPUTLBEntry, addend) -
offsetof(CPUTLBEntry, addr_write), ld_op);
/* add x(r1), r0 */
tcg_out_arith(s, r0, r1, r0, ARITH_ADD);
#else
r0 = addr_reg;
#endif
switch(opc) {
case 0:
/* stb data_reg, [r0] */
tcg_out_ldst(s, data_reg, r0, 0, STB);
break;
case 1:
#ifdef TARGET_WORDS_BIGENDIAN
/* sth data_reg, [r0] */
tcg_out_ldst(s, data_reg, r0, 0, STH);
#else
/* stha data_reg, [r0] ASI_PRIMARY_LITTLE */
tcg_out_ldst_asi(s, data_reg, r0, 0, STHA, ASI_PRIMARY_LITTLE);
#endif
break;
case 2:
#ifdef TARGET_WORDS_BIGENDIAN
/* stw data_reg, [r0] */
tcg_out_ldst(s, data_reg, r0, 0, STW);
#else
/* stwa data_reg, [r0] ASI_PRIMARY_LITTLE */
tcg_out_ldst_asi(s, data_reg, r0, 0, STWA, ASI_PRIMARY_LITTLE);
#endif
break;
case 3:
#ifdef TARGET_WORDS_BIGENDIAN
/* stx data_reg, [r0] */
tcg_out_ldst(s, data_reg, r0, 0, STX);
#else
/* stxa data_reg, [r0] ASI_PRIMARY_LITTLE */
tcg_out_ldst_asi(s, data_reg, r0, 0, STXA, ASI_PRIMARY_LITTLE);
#endif
break;
default:
tcg_abort();
}
#if defined(CONFIG_SOFTMMU)
/* label2: */
*label2_ptr = (INSN_OP(0) | INSN_COND(COND_A, 0) | INSN_OP2(0x2) |
INSN_OFF22((unsigned long)label2_ptr -
(unsigned long)s->code_ptr));
#endif
}
static inline void tcg_out_op(TCGContext *s, int opc, const TCGArg *args,
const int *const_args)
{
int c;
switch (opc) {
case INDEX_op_exit_tb:
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_I0, args[0]);
tcg_out32(s, JMPL | INSN_RD(TCG_REG_G0) | INSN_RS1(TCG_REG_I7) |
INSN_IMM13(8));
tcg_out32(s, RESTORE | INSN_RD(TCG_REG_G0) | INSN_RS1(TCG_REG_G0) |
INSN_RS2(TCG_REG_G0));
break;
case INDEX_op_goto_tb:
if (s->tb_jmp_offset) {
/* direct jump method */
tcg_out_sethi(s, TCG_REG_I5, args[0] & 0xffffe000);
tcg_out32(s, JMPL | INSN_RD(TCG_REG_G0) | INSN_RS1(TCG_REG_I5) |
INSN_IMM13((args[0] & 0x1fff)));
s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf;
} else {
/* indirect jump method */
tcg_out_ld_ptr(s, TCG_REG_I5, (tcg_target_long)(s->tb_next + args[0]));
tcg_out32(s, JMPL | INSN_RD(TCG_REG_G0) | INSN_RS1(TCG_REG_I5) |
INSN_RS2(TCG_REG_G0));
}
tcg_out_nop(s);
s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf;
break;
case INDEX_op_call:
if (const_args[0]) {
tcg_out32(s, CALL | ((((tcg_target_ulong)args[0]
- (tcg_target_ulong)s->code_ptr) >> 2)
& 0x3fffffff));
tcg_out_nop(s);
} else {
tcg_out_ld_ptr(s, TCG_REG_I5, (tcg_target_long)(s->tb_next + args[0]));
tcg_out32(s, JMPL | INSN_RD(TCG_REG_O7) | INSN_RS1(TCG_REG_I5) |
INSN_RS2(TCG_REG_G0));
tcg_out_nop(s);
}
break;
case INDEX_op_jmp:
case INDEX_op_br:
tcg_out_branch(s, COND_A, args[0]);
tcg_out_nop(s);
break;
case INDEX_op_movi_i32:
tcg_out_movi(s, TCG_TYPE_I32, args[0], (uint32_t)args[1]);
break;
#if defined(__sparc_v9__) && !defined(__sparc_v8plus__)
#define OP_32_64(x) \
glue(glue(case INDEX_op_, x), _i32:) \
glue(glue(case INDEX_op_, x), _i64:)
#else
#define OP_32_64(x) \
glue(glue(case INDEX_op_, x), _i32:)
#endif
OP_32_64(ld8u);
tcg_out_ldst(s, args[0], args[1], args[2], LDUB);
break;
OP_32_64(ld8s);
tcg_out_ldst(s, args[0], args[1], args[2], LDSB);
break;
OP_32_64(ld16u);
tcg_out_ldst(s, args[0], args[1], args[2], LDUH);
break;
OP_32_64(ld16s);
tcg_out_ldst(s, args[0], args[1], args[2], LDSH);
break;
case INDEX_op_ld_i32:
#if defined(__sparc_v9__) && !defined(__sparc_v8plus__)
case INDEX_op_ld32u_i64:
#endif
tcg_out_ldst(s, args[0], args[1], args[2], LDUW);
break;
OP_32_64(st8);
tcg_out_ldst(s, args[0], args[1], args[2], STB);
break;
OP_32_64(st16);
tcg_out_ldst(s, args[0], args[1], args[2], STH);
break;
case INDEX_op_st_i32:
#if defined(__sparc_v9__) && !defined(__sparc_v8plus__)
case INDEX_op_st32_i64:
#endif
tcg_out_ldst(s, args[0], args[1], args[2], STW);
break;
OP_32_64(add);
c = ARITH_ADD;
goto gen_arith32;
OP_32_64(sub);
c = ARITH_SUB;
goto gen_arith32;
OP_32_64(and);
c = ARITH_AND;
goto gen_arith32;
OP_32_64(or);
c = ARITH_OR;
goto gen_arith32;
OP_32_64(xor);
c = ARITH_XOR;
goto gen_arith32;
case INDEX_op_shl_i32:
c = SHIFT_SLL;
goto gen_arith32;
case INDEX_op_shr_i32:
c = SHIFT_SRL;
goto gen_arith32;
case INDEX_op_sar_i32:
c = SHIFT_SRA;
goto gen_arith32;
case INDEX_op_mul_i32:
c = ARITH_UMUL;
goto gen_arith32;
case INDEX_op_div2_i32:
#if defined(__sparc_v9__) || defined(__sparc_v8plus__)
c = ARITH_SDIVX;
goto gen_arith32;
#else
tcg_out_sety(s, 0);
c = ARITH_SDIV;
goto gen_arith32;
#endif
case INDEX_op_divu2_i32:
#if defined(__sparc_v9__) || defined(__sparc_v8plus__)
c = ARITH_UDIVX;
goto gen_arith32;
#else
tcg_out_sety(s, 0);
c = ARITH_UDIV;
goto gen_arith32;
#endif
case INDEX_op_brcond_i32:
tcg_out_brcond(s, args[2], args[0], args[1], const_args[1],
args[3]);
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_ld32u:
tcg_out_qemu_ld(s, args, 2);
break;
case INDEX_op_qemu_ld32s:
tcg_out_qemu_ld(s, args, 2 | 4);
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;
#if defined(__sparc_v9__) && !defined(__sparc_v8plus__)
case INDEX_op_movi_i64:
tcg_out_movi(s, TCG_TYPE_I64, args[0], args[1]);
break;
case INDEX_op_ld32s_i64:
tcg_out_ldst(s, args[0], args[1], args[2], LDSW);
break;
case INDEX_op_ld_i64:
tcg_out_ldst(s, args[0], args[1], args[2], LDX);
break;
case INDEX_op_st_i64:
tcg_out_ldst(s, args[0], args[1], args[2], STX);
break;
case INDEX_op_shl_i64:
c = SHIFT_SLLX;
goto gen_arith32;
case INDEX_op_shr_i64:
c = SHIFT_SRLX;
goto gen_arith32;
case INDEX_op_sar_i64:
c = SHIFT_SRAX;
goto gen_arith32;
case INDEX_op_mul_i64:
c = ARITH_MULX;
goto gen_arith32;
case INDEX_op_div2_i64:
c = ARITH_SDIVX;
goto gen_arith32;
case INDEX_op_divu2_i64:
c = ARITH_UDIVX;
goto gen_arith32;
case INDEX_op_brcond_i64:
tcg_out_brcond(s, args[2], args[0], args[1], const_args[1],
args[3]);
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_arith32:
if (const_args[2]) {
tcg_out_arithi(s, args[0], args[1], args[2], c);
} else {
tcg_out_arith(s, args[0], args[1], args[2], c);
}
break;
default:
fprintf(stderr, "unknown opcode 0x%x\n", opc);
tcg_abort();
}
}
static const TCGTargetOpDef sparc_op_defs[] = {
{ INDEX_op_exit_tb, { } },
{ INDEX_op_goto_tb, { } },
{ INDEX_op_call, { "ri" } },
{ INDEX_op_jmp, { "ri" } },
{ 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, { "r", "r" } },
{ INDEX_op_st16_i32, { "r", "r" } },
{ INDEX_op_st_i32, { "r", "r" } },
{ INDEX_op_add_i32, { "r", "r", "rJ" } },
{ INDEX_op_mul_i32, { "r", "r", "rJ" } },
{ INDEX_op_div2_i32, { "r", "r", "0", "1", "r" } },
{ INDEX_op_divu2_i32, { "r", "r", "0", "1", "r" } },
{ INDEX_op_sub_i32, { "r", "r", "rJ" } },
{ INDEX_op_and_i32, { "r", "r", "rJ" } },
{ INDEX_op_or_i32, { "r", "r", "rJ" } },
{ INDEX_op_xor_i32, { "r", "r", "rJ" } },
{ INDEX_op_shl_i32, { "r", "r", "rJ" } },
{ INDEX_op_shr_i32, { "r", "r", "rJ" } },
{ INDEX_op_sar_i32, { "r", "r", "rJ" } },
{ INDEX_op_brcond_i32, { "r", "ri" } },
{ 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_ld32u, { "r", "L" } },
{ INDEX_op_qemu_ld32s, { "r", "L" } },
{ INDEX_op_qemu_st8, { "L", "L" } },
{ INDEX_op_qemu_st16, { "L", "L" } },
{ INDEX_op_qemu_st32, { "L", "L" } },
#if defined(__sparc_v9__) && !defined(__sparc_v8plus__)
{ INDEX_op_mov_i64, { "r", "r" } },
{ INDEX_op_movi_i64, { "r" } },
{ INDEX_op_ld8u_i64, { "r", "r" } },
{ INDEX_op_ld8s_i64, { "r", "r" } },
{ INDEX_op_ld16u_i64, { "r", "r" } },
{ INDEX_op_ld16s_i64, { "r", "r" } },
{ INDEX_op_ld32u_i64, { "r", "r" } },
{ INDEX_op_ld32s_i64, { "r", "r" } },
{ INDEX_op_ld_i64, { "r", "r" } },
{ INDEX_op_st8_i64, { "r", "r" } },
{ INDEX_op_st16_i64, { "r", "r" } },
{ INDEX_op_st32_i64, { "r", "r" } },
{ INDEX_op_st_i64, { "r", "r" } },
{ INDEX_op_add_i64, { "r", "r", "rJ" } },
{ INDEX_op_mul_i64, { "r", "r", "rJ" } },
{ INDEX_op_div2_i64, { "r", "r", "0", "1", "r" } },
{ INDEX_op_divu2_i64, { "r", "r", "0", "1", "r" } },
{ INDEX_op_sub_i64, { "r", "r", "rJ" } },
{ INDEX_op_and_i64, { "r", "r", "rJ" } },
{ INDEX_op_or_i64, { "r", "r", "rJ" } },
{ INDEX_op_xor_i64, { "r", "r", "rJ" } },
{ INDEX_op_shl_i64, { "r", "r", "rJ" } },
{ INDEX_op_shr_i64, { "r", "r", "rJ" } },
{ INDEX_op_sar_i64, { "r", "r", "rJ" } },
{ INDEX_op_brcond_i64, { "r", "ri" } },
#endif
{ -1 },
};
void tcg_target_init(TCGContext *s)
{
tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0, 0xffffffff);
#if defined(__sparc_v9__) && !defined(__sparc_v8plus__)
tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I64], 0, 0xffffffff);
#endif
tcg_regset_set32(tcg_target_call_clobber_regs, 0,
(1 << TCG_REG_G1) |
(1 << TCG_REG_G2) |
(1 << TCG_REG_G3) |
(1 << TCG_REG_G4) |
(1 << TCG_REG_G5) |
(1 << TCG_REG_G6) |
(1 << TCG_REG_G7) |
(1 << TCG_REG_O0) |
(1 << TCG_REG_O1) |
(1 << TCG_REG_O2) |
(1 << TCG_REG_O3) |
(1 << TCG_REG_O4) |
(1 << TCG_REG_O5) |
(1 << TCG_REG_O7));
tcg_regset_clear(s->reserved_regs);
tcg_regset_set_reg(s->reserved_regs, TCG_REG_G0);
tcg_regset_set_reg(s->reserved_regs, TCG_REG_I5); // for internal use
tcg_regset_set_reg(s->reserved_regs, TCG_REG_I6);
tcg_regset_set_reg(s->reserved_regs, TCG_REG_I7);
tcg_regset_set_reg(s->reserved_regs, TCG_REG_O6);
tcg_regset_set_reg(s->reserved_regs, TCG_REG_O7);
tcg_add_target_add_op_defs(sparc_op_defs);
}
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