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qemu / qemu / 905afe37ab44ff4f55463edba3bb5c6026b815a9 / . / tcg / sparc64 / tcg-target.c.inc
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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.
*/
/* We only support generating code for 64-bit mode. */
#ifndef __arch64__
#error "unsupported code generation mode"
#endif
#include "../tcg-ldst.c.inc"
#include "../tcg-pool.c.inc"
#ifdef CONFIG_DEBUG_TCG
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",
};
#endif
#define TCG_CT_CONST_S11 0x100
#define TCG_CT_CONST_S13 0x200
#define TCG_CT_CONST_ZERO 0x400
#define ALL_GENERAL_REGS MAKE_64BIT_MASK(0, 32)
/* Define some temporary registers. T3 is used for constant generation. */
#define TCG_REG_T1 TCG_REG_G1
#define TCG_REG_T2 TCG_REG_G2
#define TCG_REG_T3 TCG_REG_O7
#ifndef CONFIG_SOFTMMU
# define TCG_GUEST_BASE_REG TCG_REG_I5
#endif
#define TCG_REG_TB TCG_REG_I1
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,
TCG_REG_I5,
TCG_REG_G3,
TCG_REG_G4,
TCG_REG_G5,
TCG_REG_O0,
TCG_REG_O1,
TCG_REG_O2,
TCG_REG_O3,
TCG_REG_O4,
TCG_REG_O5,
};
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 TCGReg tcg_target_call_oarg_reg(TCGCallReturnKind kind, int slot)
{
tcg_debug_assert(kind == TCG_CALL_RET_NORMAL);
tcg_debug_assert(slot >= 0 && slot <= 3);
return TCG_REG_O0 + slot;
}
#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_IMM10(x) ((1 << 13) | ((x) & 0x3ff))
#define INSN_IMM11(x) ((1 << 13) | ((x) & 0x7ff))
#define INSN_IMM13(x) ((1 << 13) | ((x) & 0x1fff))
#define INSN_OFF16(x) ((((x) >> 2) & 0x3fff) | ((((x) >> 16) & 3) << 20))
#define INSN_OFF19(x) (((x) >> 2) & 0x07ffff)
#define INSN_COND(x) ((x) << 25)
#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) | INSN_OP2(0x2))
#define RCOND_Z 1
#define RCOND_LEZ 2
#define RCOND_LZ 3
#define RCOND_NZ 5
#define RCOND_GZ 6
#define RCOND_GEZ 7
#define MOVCC_ICC (1 << 18)
#define MOVCC_XCC (1 << 18 | 1 << 12)
#define BPCC_ICC 0
#define BPCC_XCC (2 << 20)
#define BPCC_PT (1 << 19)
#define BPCC_PN 0
#define BPCC_A (1 << 29)
#define BPR_PT BPCC_PT
#define ARITH_ADD (INSN_OP(2) | INSN_OP3(0x00))
#define ARITH_ADDCC (INSN_OP(2) | INSN_OP3(0x10))
#define ARITH_AND (INSN_OP(2) | INSN_OP3(0x01))
#define ARITH_ANDCC (INSN_OP(2) | INSN_OP3(0x11))
#define ARITH_ANDN (INSN_OP(2) | INSN_OP3(0x05))
#define ARITH_OR (INSN_OP(2) | INSN_OP3(0x02))
#define ARITH_ORCC (INSN_OP(2) | INSN_OP3(0x12))
#define ARITH_ORN (INSN_OP(2) | INSN_OP3(0x06))
#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_ADDC (INSN_OP(2) | INSN_OP3(0x08))
#define ARITH_SUBC (INSN_OP(2) | INSN_OP3(0x0c))
#define ARITH_UMUL (INSN_OP(2) | INSN_OP3(0x0a))
#define ARITH_SMUL (INSN_OP(2) | INSN_OP3(0x0b))
#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 ARITH_MOVCC (INSN_OP(2) | INSN_OP3(0x2c))
#define ARITH_MOVR (INSN_OP(2) | INSN_OP3(0x2f))
#define ARITH_ADDXC (INSN_OP(2) | INSN_OP3(0x36) | INSN_OPF(0x11))
#define ARITH_UMULXHI (INSN_OP(2) | INSN_OP3(0x36) | INSN_OPF(0x16))
#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 RDY (INSN_OP(2) | INSN_OP3(0x28) | INSN_RS1(0))
#define WRY (INSN_OP(2) | INSN_OP3(0x30) | INSN_RD(0))
#define JMPL (INSN_OP(2) | INSN_OP3(0x38))
#define RETURN (INSN_OP(2) | INSN_OP3(0x39))
#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))
#define MEMBAR (INSN_OP(2) | INSN_OP3(0x28) | INSN_RS1(15) | (1 << 13))
#define NOP (SETHI | INSN_RD(TCG_REG_G0) | 0)
#ifndef ASI_PRIMARY_LITTLE
#define ASI_PRIMARY_LITTLE 0x88
#endif
#define LDUH_LE (LDUHA | INSN_ASI(ASI_PRIMARY_LITTLE))
#define LDSH_LE (LDSHA | INSN_ASI(ASI_PRIMARY_LITTLE))
#define LDUW_LE (LDUWA | INSN_ASI(ASI_PRIMARY_LITTLE))
#define LDSW_LE (LDSWA | INSN_ASI(ASI_PRIMARY_LITTLE))
#define LDX_LE (LDXA | INSN_ASI(ASI_PRIMARY_LITTLE))
#define STH_LE (STHA | INSN_ASI(ASI_PRIMARY_LITTLE))
#define STW_LE (STWA | INSN_ASI(ASI_PRIMARY_LITTLE))
#define STX_LE (STXA | INSN_ASI(ASI_PRIMARY_LITTLE))
#ifndef use_vis3_instructions
bool use_vis3_instructions;
#endif
static bool check_fit_i64(int64_t val, unsigned int bits)
{
return val == sextract64(val, 0, bits);
}
static bool check_fit_i32(int32_t val, unsigned int bits)
{
return val == sextract32(val, 0, bits);
}
#define check_fit_tl check_fit_i64
#define check_fit_ptr check_fit_i64
static bool patch_reloc(tcg_insn_unit *src_rw, int type,
intptr_t value, intptr_t addend)
{
const tcg_insn_unit *src_rx = tcg_splitwx_to_rx(src_rw);
uint32_t insn = *src_rw;
intptr_t pcrel;
value += addend;
pcrel = tcg_ptr_byte_diff((tcg_insn_unit *)value, src_rx);
switch (type) {
case R_SPARC_WDISP16:
if (!check_fit_ptr(pcrel >> 2, 16)) {
return false;
}
insn &= ~INSN_OFF16(-1);
insn |= INSN_OFF16(pcrel);
break;
case R_SPARC_WDISP19:
if (!check_fit_ptr(pcrel >> 2, 19)) {
return false;
}
insn &= ~INSN_OFF19(-1);
insn |= INSN_OFF19(pcrel);
break;
case R_SPARC_13:
if (!check_fit_ptr(value, 13)) {
return false;
}
insn &= ~INSN_IMM13(-1);
insn |= INSN_IMM13(value);
break;
default:
g_assert_not_reached();
}
*src_rw = insn;
return true;
}
/* test if a constant matches the constraint */
static bool tcg_target_const_match(int64_t val, int ct,
TCGType type, TCGCond cond, int vece)
{
if (ct & TCG_CT_CONST) {
return 1;
}
if (type == TCG_TYPE_I32) {
val = (int32_t)val;
}
if ((ct & TCG_CT_CONST_ZERO) && val == 0) {
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;
}
}
static void tcg_out_nop(TCGContext *s)
{
tcg_out32(s, NOP);
}
static void tcg_out_arith(TCGContext *s, TCGReg rd, TCGReg rs1,
TCGReg rs2, int op)
{
tcg_out32(s, op | INSN_RD(rd) | INSN_RS1(rs1) | INSN_RS2(rs2));
}
static void tcg_out_arithi(TCGContext *s, TCGReg rd, TCGReg rs1,
int32_t offset, int op)
{
tcg_out32(s, op | INSN_RD(rd) | INSN_RS1(rs1) | INSN_IMM13(offset));
}
static void tcg_out_arithc(TCGContext *s, TCGReg rd, TCGReg rs1,
int32_t val2, int val2const, int op)
{
tcg_out32(s, op | INSN_RD(rd) | INSN_RS1(rs1)
| (val2const ? INSN_IMM13(val2) : INSN_RS2(val2)));
}
static bool tcg_out_mov(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg)
{
if (ret != arg) {
tcg_out_arith(s, ret, arg, TCG_REG_G0, ARITH_OR);
}
return true;
}
static void tcg_out_mov_delay(TCGContext *s, TCGReg ret, TCGReg arg)
{
if (ret != arg) {
tcg_out_arith(s, ret, arg, TCG_REG_G0, ARITH_OR);
} else {
tcg_out_nop(s);
}
}
static void tcg_out_sethi(TCGContext *s, TCGReg ret, uint32_t arg)
{
tcg_out32(s, SETHI | INSN_RD(ret) | ((arg & 0xfffffc00) >> 10));
}
/* A 13-bit constant sign-extended to 64 bits. */
static void tcg_out_movi_s13(TCGContext *s, TCGReg ret, int32_t arg)
{
tcg_out_arithi(s, ret, TCG_REG_G0, arg, ARITH_OR);
}
/* A 32-bit constant sign-extended to 64 bits. */
static void tcg_out_movi_s32(TCGContext *s, TCGReg ret, int32_t arg)
{
tcg_out_sethi(s, ret, ~arg);
tcg_out_arithi(s, ret, ret, (arg & 0x3ff) | -0x400, ARITH_XOR);
}
/* A 32-bit constant zero-extended to 64 bits. */
static void tcg_out_movi_u32(TCGContext *s, TCGReg ret, uint32_t arg)
{
tcg_out_sethi(s, ret, arg);
if (arg & 0x3ff) {
tcg_out_arithi(s, ret, ret, arg & 0x3ff, ARITH_OR);
}
}
static void tcg_out_movi_int(TCGContext *s, TCGType type, TCGReg ret,
tcg_target_long arg, bool in_prologue,
TCGReg scratch)
{
tcg_target_long hi, lo = (int32_t)arg;
tcg_target_long test, lsb;
/* A 13-bit constant sign-extended to 64-bits. */
if (check_fit_tl(arg, 13)) {
tcg_out_movi_s13(s, ret, arg);
return;
}
/* A 32-bit constant, or 32-bit zero-extended to 64-bits. */
if (type == TCG_TYPE_I32 || arg == (uint32_t)arg) {
tcg_out_movi_u32(s, ret, arg);
return;
}
/* A 13-bit constant relative to the TB. */
if (!in_prologue) {
test = tcg_tbrel_diff(s, (void *)arg);
if (check_fit_ptr(test, 13)) {
tcg_out_arithi(s, ret, TCG_REG_TB, test, ARITH_ADD);
return;
}
}
/* A 32-bit constant sign-extended to 64-bits. */
if (arg == lo) {
tcg_out_movi_s32(s, ret, arg);
return;
}
/* A 32-bit constant, shifted. */
lsb = ctz64(arg);
test = (tcg_target_long)arg >> lsb;
if (lsb > 10 && test == extract64(test, 0, 21)) {
tcg_out_sethi(s, ret, test << 10);
tcg_out_arithi(s, ret, ret, lsb - 10, SHIFT_SLLX);
return;
} else if (test == (uint32_t)test || test == (int32_t)test) {
tcg_out_movi_int(s, TCG_TYPE_I64, ret, test, in_prologue, scratch);
tcg_out_arithi(s, ret, ret, lsb, SHIFT_SLLX);
return;
}
/* Use the constant pool, if possible. */
if (!in_prologue) {
new_pool_label(s, arg, R_SPARC_13, s->code_ptr,
tcg_tbrel_diff(s, NULL));
tcg_out32(s, LDX | INSN_RD(ret) | INSN_RS1(TCG_REG_TB));
return;
}
/* A 64-bit constant decomposed into 2 32-bit pieces. */
if (check_fit_i32(lo, 13)) {
hi = (arg - lo) >> 32;
tcg_out_movi_u32(s, ret, hi);
tcg_out_arithi(s, ret, ret, 32, SHIFT_SLLX);
tcg_out_arithi(s, ret, ret, lo, ARITH_ADD);
} else {
hi = arg >> 32;
tcg_out_movi_u32(s, ret, hi);
tcg_out_movi_u32(s, scratch, lo);
tcg_out_arithi(s, ret, ret, 32, SHIFT_SLLX);
tcg_out_arith(s, ret, ret, scratch, ARITH_OR);
}
}
static void tcg_out_movi(TCGContext *s, TCGType type,
TCGReg ret, tcg_target_long arg)
{
tcg_debug_assert(ret != TCG_REG_T3);
tcg_out_movi_int(s, type, ret, arg, false, TCG_REG_T3);
}
static void tcg_out_ext8s(TCGContext *s, TCGType type, TCGReg rd, TCGReg rs)
{
g_assert_not_reached();
}
static void tcg_out_ext16s(TCGContext *s, TCGType type, TCGReg rd, TCGReg rs)
{
g_assert_not_reached();
}
static void tcg_out_ext8u(TCGContext *s, TCGReg rd, TCGReg rs)
{
tcg_out_arithi(s, rd, rs, 0xff, ARITH_AND);
}
static void tcg_out_ext16u(TCGContext *s, TCGReg rd, TCGReg rs)
{
tcg_out_arithi(s, rd, rs, 16, SHIFT_SLL);
tcg_out_arithi(s, rd, rd, 16, SHIFT_SRL);
}
static void tcg_out_ext32s(TCGContext *s, TCGReg rd, TCGReg rs)
{
tcg_out_arithi(s, rd, rs, 0, SHIFT_SRA);
}
static void tcg_out_ext32u(TCGContext *s, TCGReg rd, TCGReg rs)
{
tcg_out_arithi(s, rd, rs, 0, SHIFT_SRL);
}
static void tcg_out_exts_i32_i64(TCGContext *s, TCGReg rd, TCGReg rs)
{
tcg_out_ext32s(s, rd, rs);
}
static void tcg_out_extu_i32_i64(TCGContext *s, TCGReg rd, TCGReg rs)
{
tcg_out_ext32u(s, rd, rs);
}
static void tcg_out_extrl_i64_i32(TCGContext *s, TCGReg rd, TCGReg rs)
{
tcg_out_ext32u(s, rd, rs);
}
static bool tcg_out_xchg(TCGContext *s, TCGType type, TCGReg r1, TCGReg r2)
{
return false;
}
static void tcg_out_addi_ptr(TCGContext *s, TCGReg rd, TCGReg rs,
tcg_target_long imm)
{
/* This function is only used for passing structs by reference. */
g_assert_not_reached();
}
static void tcg_out_ldst_rr(TCGContext *s, TCGReg data, TCGReg a1,
TCGReg a2, int op)
{
tcg_out32(s, op | INSN_RD(data) | INSN_RS1(a1) | INSN_RS2(a2));
}
static void tcg_out_ldst(TCGContext *s, TCGReg ret, TCGReg addr,
intptr_t offset, int op)
{
if (check_fit_ptr(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_T1, offset);
tcg_out_ldst_rr(s, ret, addr, TCG_REG_T1, op);
}
}
static void tcg_out_ld(TCGContext *s, TCGType type, TCGReg ret,
TCGReg arg1, intptr_t arg2)
{
tcg_out_ldst(s, ret, arg1, arg2, (type == TCG_TYPE_I32 ? LDUW : LDX));
}
static void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg,
TCGReg arg1, intptr_t arg2)
{
tcg_out_ldst(s, arg, arg1, arg2, (type == TCG_TYPE_I32 ? STW : STX));
}
static bool tcg_out_sti(TCGContext *s, TCGType type, TCGArg val,
TCGReg base, intptr_t ofs)
{
if (val == 0) {
tcg_out_st(s, type, TCG_REG_G0, base, ofs);
return true;
}
return false;
}
static void tcg_out_sety(TCGContext *s, TCGReg rs)
{
tcg_out32(s, WRY | INSN_RS1(TCG_REG_G0) | INSN_RS2(rs));
}
static void tcg_out_div32(TCGContext *s, TCGReg rd, TCGReg rs1,
int32_t val2, int val2const, int uns)
{
/* Load Y with the sign/zero extension of RS1 to 64-bits. */
if (uns) {
tcg_out_sety(s, TCG_REG_G0);
} else {
tcg_out_arithi(s, TCG_REG_T1, rs1, 31, SHIFT_SRA);
tcg_out_sety(s, TCG_REG_T1);
}
tcg_out_arithc(s, rd, rs1, val2, val2const,
uns ? ARITH_UDIV : ARITH_SDIV);
}
static const uint8_t tcg_cond_to_bcond[] = {
[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 const uint8_t tcg_cond_to_rcond[16] = {
[TCG_COND_EQ] = RCOND_Z,
[TCG_COND_NE] = RCOND_NZ,
[TCG_COND_LT] = RCOND_LZ,
[TCG_COND_GT] = RCOND_GZ,
[TCG_COND_LE] = RCOND_LEZ,
[TCG_COND_GE] = RCOND_GEZ
};
static void tcg_out_bpcc0(TCGContext *s, int scond, int flags, int off19)
{
tcg_out32(s, INSN_OP(0) | INSN_OP2(1) | INSN_COND(scond) | flags | off19);
}
static void tcg_out_bpcc(TCGContext *s, int scond, int flags, TCGLabel *l)
{
int off19 = 0;
if (l->has_value) {
off19 = INSN_OFF19(tcg_pcrel_diff(s, l->u.value_ptr));
} else {
tcg_out_reloc(s, s->code_ptr, R_SPARC_WDISP19, l, 0);
}
tcg_out_bpcc0(s, scond, flags, off19);
}
static void tcg_out_cmp(TCGContext *s, TCGCond cond,
TCGReg c1, int32_t c2, int c2const)
{
tcg_out_arithc(s, TCG_REG_G0, c1, c2, c2const, ARITH_SUBCC);
}
static void tcg_out_brcond_i32(TCGContext *s, TCGCond cond, TCGReg arg1,
int32_t arg2, int const_arg2, TCGLabel *l)
{
tcg_out_cmp(s, cond, arg1, arg2, const_arg2);
tcg_out_bpcc(s, tcg_cond_to_bcond[cond], BPCC_ICC | BPCC_PT, l);
tcg_out_nop(s);
}
static void tcg_out_movcc(TCGContext *s, TCGCond cond, int cc, TCGReg ret,
int32_t v1, int v1const)
{
tcg_out32(s, ARITH_MOVCC | cc | INSN_RD(ret)
| INSN_RS1(tcg_cond_to_bcond[cond])
| (v1const ? INSN_IMM11(v1) : INSN_RS2(v1)));
}
static void tcg_out_movcond_i32(TCGContext *s, TCGCond cond, TCGReg ret,
TCGReg c1, int32_t c2, int c2const,
int32_t v1, int v1const)
{
tcg_out_cmp(s, cond, c1, c2, c2const);
tcg_out_movcc(s, cond, MOVCC_ICC, ret, v1, v1const);
}
static void tcg_out_brcond_i64(TCGContext *s, TCGCond cond, TCGReg arg1,
int32_t arg2, int const_arg2, TCGLabel *l)
{
/* For 64-bit signed comparisons vs zero, we can avoid the compare. */
int rcond = tcg_cond_to_rcond[cond];
if (arg2 == 0 && rcond) {
int off16 = 0;
if (l->has_value) {
off16 = INSN_OFF16(tcg_pcrel_diff(s, l->u.value_ptr));
} else {
tcg_out_reloc(s, s->code_ptr, R_SPARC_WDISP16, l, 0);
}
tcg_out32(s, INSN_OP(0) | INSN_OP2(3) | BPR_PT | INSN_RS1(arg1)
| INSN_COND(rcond) | off16);
} else {
tcg_out_cmp(s, cond, arg1, arg2, const_arg2);
tcg_out_bpcc(s, tcg_cond_to_bcond[cond], BPCC_XCC | BPCC_PT, l);
}
tcg_out_nop(s);
}
static void tcg_out_movr(TCGContext *s, int rcond, TCGReg ret, TCGReg c1,
int32_t v1, int v1const)
{
tcg_out32(s, ARITH_MOVR | INSN_RD(ret) | INSN_RS1(c1) | (rcond << 10)
| (v1const ? INSN_IMM10(v1) : INSN_RS2(v1)));
}
static void tcg_out_movcond_i64(TCGContext *s, TCGCond cond, TCGReg ret,
TCGReg c1, int32_t c2, int c2const,
int32_t v1, int v1const)
{
/* For 64-bit signed comparisons vs zero, we can avoid the compare.
Note that the immediate range is one bit smaller, so we must check
for that as well. */
int rcond = tcg_cond_to_rcond[cond];
if (c2 == 0 && rcond && (!v1const || check_fit_i32(v1, 10))) {
tcg_out_movr(s, rcond, ret, c1, v1, v1const);
} else {
tcg_out_cmp(s, cond, c1, c2, c2const);
tcg_out_movcc(s, cond, MOVCC_XCC, ret, v1, v1const);
}
}
static void tcg_out_setcond_i32(TCGContext *s, TCGCond cond, TCGReg ret,
TCGReg c1, int32_t c2, int c2const, bool neg)
{
/* For 32-bit comparisons, we can play games with ADDC/SUBC. */
switch (cond) {
case TCG_COND_LTU:
case TCG_COND_GEU:
/* The result of the comparison is in the carry bit. */
break;
case TCG_COND_EQ:
case TCG_COND_NE:
/* For equality, we can transform to inequality vs zero. */
if (c2 != 0) {
tcg_out_arithc(s, TCG_REG_T1, c1, c2, c2const, ARITH_XOR);
c2 = TCG_REG_T1;
} else {
c2 = c1;
}
c1 = TCG_REG_G0, c2const = 0;
cond = (cond == TCG_COND_EQ ? TCG_COND_GEU : TCG_COND_LTU);
break;
case TCG_COND_GTU:
case TCG_COND_LEU:
/* If we don't need to load a constant into a register, we can
swap the operands on GTU/LEU. There's no benefit to loading
the constant into a temporary register. */
if (!c2const || c2 == 0) {
TCGReg t = c1;
c1 = c2;
c2 = t;
c2const = 0;
cond = tcg_swap_cond(cond);
break;
}
/* FALLTHRU */
default:
tcg_out_cmp(s, cond, c1, c2, c2const);
tcg_out_movi_s13(s, ret, 0);
tcg_out_movcc(s, cond, MOVCC_ICC, ret, neg ? -1 : 1, 1);
return;
}
tcg_out_cmp(s, cond, c1, c2, c2const);
if (cond == TCG_COND_LTU) {
if (neg) {
/* 0 - 0 - C = -C = (C ? -1 : 0) */
tcg_out_arithi(s, ret, TCG_REG_G0, 0, ARITH_SUBC);
} else {
/* 0 + 0 + C = C = (C ? 1 : 0) */
tcg_out_arithi(s, ret, TCG_REG_G0, 0, ARITH_ADDC);
}
} else {
if (neg) {
/* 0 + -1 + C = C - 1 = (C ? 0 : -1) */
tcg_out_arithi(s, ret, TCG_REG_G0, -1, ARITH_ADDC);
} else {
/* 0 - -1 - C = 1 - C = (C ? 0 : 1) */
tcg_out_arithi(s, ret, TCG_REG_G0, -1, ARITH_SUBC);
}
}
}
static void tcg_out_setcond_i64(TCGContext *s, TCGCond cond, TCGReg ret,
TCGReg c1, int32_t c2, int c2const, bool neg)
{
int rcond;
if (use_vis3_instructions && !neg) {
switch (cond) {
case TCG_COND_NE:
if (c2 != 0) {
break;
}
c2 = c1, c2const = 0, c1 = TCG_REG_G0;
/* FALLTHRU */
case TCG_COND_LTU:
tcg_out_cmp(s, cond, c1, c2, c2const);
tcg_out_arith(s, ret, TCG_REG_G0, TCG_REG_G0, ARITH_ADDXC);
return;
default:
break;
}
}
/* For 64-bit signed comparisons vs zero, we can avoid the compare
if the input does not overlap the output. */
rcond = tcg_cond_to_rcond[cond];
if (c2 == 0 && rcond && c1 != ret) {
tcg_out_movi_s13(s, ret, 0);
tcg_out_movr(s, rcond, ret, c1, neg ? -1 : 1, 1);
} else {
tcg_out_cmp(s, cond, c1, c2, c2const);
tcg_out_movi_s13(s, ret, 0);
tcg_out_movcc(s, cond, MOVCC_XCC, ret, neg ? -1 : 1, 1);
}
}
static void tcg_out_addsub2_i32(TCGContext *s, TCGReg rl, TCGReg rh,
TCGReg al, TCGReg ah, int32_t bl, int blconst,
int32_t bh, int bhconst, int opl, int oph)
{
TCGReg tmp = TCG_REG_T1;
/* Note that the low parts are fully consumed before tmp is set. */
if (rl != ah && (bhconst || rl != bh)) {
tmp = rl;
}
tcg_out_arithc(s, tmp, al, bl, blconst, opl);
tcg_out_arithc(s, rh, ah, bh, bhconst, oph);
tcg_out_mov(s, TCG_TYPE_I32, rl, tmp);
}
static void tcg_out_addsub2_i64(TCGContext *s, TCGReg rl, TCGReg rh,
TCGReg al, TCGReg ah, int32_t bl, int blconst,
int32_t bh, int bhconst, bool is_sub)
{
TCGReg tmp = TCG_REG_T1;
/* Note that the low parts are fully consumed before tmp is set. */
if (rl != ah && (bhconst || rl != bh)) {
tmp = rl;
}
tcg_out_arithc(s, tmp, al, bl, blconst, is_sub ? ARITH_SUBCC : ARITH_ADDCC);
if (use_vis3_instructions && !is_sub) {
/* Note that ADDXC doesn't accept immediates. */
if (bhconst && bh != 0) {
tcg_out_movi_s13(s, TCG_REG_T2, bh);
bh = TCG_REG_T2;
}
tcg_out_arith(s, rh, ah, bh, ARITH_ADDXC);
} else if (bh == TCG_REG_G0) {
/* If we have a zero, we can perform the operation in two insns,
with the arithmetic first, and a conditional move into place. */
if (rh == ah) {
tcg_out_arithi(s, TCG_REG_T2, ah, 1,
is_sub ? ARITH_SUB : ARITH_ADD);
tcg_out_movcc(s, TCG_COND_LTU, MOVCC_XCC, rh, TCG_REG_T2, 0);
} else {
tcg_out_arithi(s, rh, ah, 1, is_sub ? ARITH_SUB : ARITH_ADD);
tcg_out_movcc(s, TCG_COND_GEU, MOVCC_XCC, rh, ah, 0);
}
} else {
/*
* Otherwise adjust BH as if there is carry into T2.
* Note that constant BH is constrained to 11 bits for the MOVCC,
* so the adjustment fits 12 bits.
*/
if (bhconst) {
tcg_out_movi_s13(s, TCG_REG_T2, bh + (is_sub ? -1 : 1));
} else {
tcg_out_arithi(s, TCG_REG_T2, bh, 1,
is_sub ? ARITH_SUB : ARITH_ADD);
}
/* ... smoosh T2 back to original BH if carry is clear ... */
tcg_out_movcc(s, TCG_COND_GEU, MOVCC_XCC, TCG_REG_T2, bh, bhconst);
/* ... and finally perform the arithmetic with the new operand. */
tcg_out_arith(s, rh, ah, TCG_REG_T2, is_sub ? ARITH_SUB : ARITH_ADD);
}
tcg_out_mov(s, TCG_TYPE_I64, rl, tmp);
}
static void tcg_out_jmpl_const(TCGContext *s, const tcg_insn_unit *dest,
bool in_prologue, bool tail_call)
{
uintptr_t desti = (uintptr_t)dest;
tcg_out_movi_int(s, TCG_TYPE_PTR, TCG_REG_T1,
desti & ~0xfff, in_prologue, TCG_REG_T2);
tcg_out_arithi(s, tail_call ? TCG_REG_G0 : TCG_REG_O7,
TCG_REG_T1, desti & 0xfff, JMPL);
}
static void tcg_out_call_nodelay(TCGContext *s, const tcg_insn_unit *dest,
bool in_prologue)
{
ptrdiff_t disp = tcg_pcrel_diff(s, dest);
if (disp == (int32_t)disp) {
tcg_out32(s, CALL | (uint32_t)disp >> 2);
} else {
tcg_out_jmpl_const(s, dest, in_prologue, false);
}
}
static void tcg_out_call(TCGContext *s, const tcg_insn_unit *dest,
const TCGHelperInfo *info)
{
tcg_out_call_nodelay(s, dest, false);
tcg_out_nop(s);
}
static void tcg_out_mb(TCGContext *s, TCGArg a0)
{
/* Note that the TCG memory order constants mirror the Sparc MEMBAR. */
tcg_out32(s, MEMBAR | (a0 & TCG_MO_ALL));
}
/* Generate global QEMU prologue and epilogue code */
static void tcg_target_qemu_prologue(TCGContext *s)
{
int tmp_buf_size, frame_size;
/*
* The TCG temp buffer is at the top of the frame, immediately
* below the frame pointer. Use the logical (aligned) offset here;
* the stack bias is applied in temp_allocate_frame().
*/
tmp_buf_size = CPU_TEMP_BUF_NLONGS * (int)sizeof(long);
tcg_set_frame(s, TCG_REG_I6, -tmp_buf_size, tmp_buf_size);
/*
* TCG_TARGET_CALL_STACK_OFFSET includes the stack bias, but is
* otherwise the minimal frame usable by callees.
*/
frame_size = TCG_TARGET_CALL_STACK_OFFSET - TCG_TARGET_STACK_BIAS;
frame_size += TCG_STATIC_CALL_ARGS_SIZE + tmp_buf_size;
frame_size += TCG_TARGET_STACK_ALIGN - 1;
frame_size &= -TCG_TARGET_STACK_ALIGN;
tcg_out32(s, SAVE | INSN_RD(TCG_REG_O6) | INSN_RS1(TCG_REG_O6) |
INSN_IMM13(-frame_size));
#ifndef CONFIG_SOFTMMU
if (guest_base != 0) {
tcg_out_movi_int(s, TCG_TYPE_PTR, TCG_GUEST_BASE_REG,
guest_base, true, TCG_REG_T1);
tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG);
}
#endif
/* We choose TCG_REG_TB such that no move is required. */
QEMU_BUILD_BUG_ON(TCG_REG_TB != TCG_REG_I1);
tcg_regset_set_reg(s->reserved_regs, TCG_REG_TB);
tcg_out_arithi(s, TCG_REG_G0, TCG_REG_I1, 0, JMPL);
/* delay slot */
tcg_out_nop(s);
/* Epilogue for goto_ptr. */
tcg_code_gen_epilogue = tcg_splitwx_to_rx(s->code_ptr);
tcg_out_arithi(s, TCG_REG_G0, TCG_REG_I7, 8, RETURN);
/* delay slot */
tcg_out_movi_s13(s, TCG_REG_O0, 0);
}
static void tcg_out_tb_start(TCGContext *s)
{
/* nothing to do */
}
static void tcg_out_nop_fill(tcg_insn_unit *p, int count)
{
int i;
for (i = 0; i < count; ++i) {
p[i] = NOP;
}
}
static const TCGLdstHelperParam ldst_helper_param = {
.ntmp = 1, .tmp = { TCG_REG_T1 }
};
static bool tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
{
MemOp opc = get_memop(lb->oi);
MemOp sgn;
if (!patch_reloc(lb->label_ptr[0], R_SPARC_WDISP19,
(intptr_t)tcg_splitwx_to_rx(s->code_ptr), 0)) {
return false;
}
/* Use inline tcg_out_ext32s; otherwise let the helper sign-extend. */
sgn = (opc & MO_SIZE) < MO_32 ? MO_SIGN : 0;
tcg_out_ld_helper_args(s, lb, &ldst_helper_param);
tcg_out_call(s, qemu_ld_helpers[opc & (MO_SIZE | sgn)], NULL);
tcg_out_ld_helper_ret(s, lb, sgn, &ldst_helper_param);
tcg_out_bpcc0(s, COND_A, BPCC_A | BPCC_PT, 0);
return patch_reloc(s->code_ptr - 1, R_SPARC_WDISP19,
(intptr_t)lb->raddr, 0);
}
static bool tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
{
MemOp opc = get_memop(lb->oi);
if (!patch_reloc(lb->label_ptr[0], R_SPARC_WDISP19,
(intptr_t)tcg_splitwx_to_rx(s->code_ptr), 0)) {
return false;
}
tcg_out_st_helper_args(s, lb, &ldst_helper_param);
tcg_out_call(s, qemu_st_helpers[opc & MO_SIZE], NULL);
tcg_out_bpcc0(s, COND_A, BPCC_A | BPCC_PT, 0);
return patch_reloc(s->code_ptr - 1, R_SPARC_WDISP19,
(intptr_t)lb->raddr, 0);
}
typedef struct {
TCGReg base;
TCGReg index;
TCGAtomAlign aa;
} HostAddress;
bool tcg_target_has_memory_bswap(MemOp memop)
{
return true;
}
/* We expect to use a 13-bit negative offset from ENV. */
#define MIN_TLB_MASK_TABLE_OFS -(1 << 12)
/*
* For system-mode, perform the TLB load and compare.
* For user-mode, perform any required alignment tests.
* In both cases, return a TCGLabelQemuLdst structure if the slow path
* is required and fill in @h with the host address for the fast path.
*/
static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h,
TCGReg addr_reg, MemOpIdx oi,
bool is_ld)
{
TCGType addr_type = s->addr_type;
TCGLabelQemuLdst *ldst = NULL;
MemOp opc = get_memop(oi);
MemOp s_bits = opc & MO_SIZE;
unsigned a_mask;
/* We don't support unaligned accesses. */
h->aa = atom_and_align_for_opc(s, opc, MO_ATOM_IFALIGN, false);
h->aa.align = MAX(h->aa.align, s_bits);
a_mask = (1u << h->aa.align) - 1;
#ifdef CONFIG_SOFTMMU
int mem_index = get_mmuidx(oi);
int fast_off = tlb_mask_table_ofs(s, mem_index);
int mask_off = fast_off + offsetof(CPUTLBDescFast, mask);
int table_off = fast_off + offsetof(CPUTLBDescFast, table);
int cmp_off = is_ld ? offsetof(CPUTLBEntry, addr_read)
: offsetof(CPUTLBEntry, addr_write);
int add_off = offsetof(CPUTLBEntry, addend);
int compare_mask;
int cc;
/* Load tlb_mask[mmu_idx] and tlb_table[mmu_idx]. */
tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_T2, TCG_AREG0, mask_off);
tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_T3, TCG_AREG0, table_off);
/* Extract the page index, shifted into place for tlb index. */
tcg_out_arithi(s, TCG_REG_T1, addr_reg,
s->page_bits - CPU_TLB_ENTRY_BITS, SHIFT_SRL);
tcg_out_arith(s, TCG_REG_T1, TCG_REG_T1, TCG_REG_T2, ARITH_AND);
/* Add the tlb_table pointer, creating the CPUTLBEntry address into R2. */
tcg_out_arith(s, TCG_REG_T1, TCG_REG_T1, TCG_REG_T3, ARITH_ADD);
/*
* Load the tlb comparator and the addend.
* Always load the entire 64-bit comparator for simplicity.
* We will ignore the high bits via BPCC_ICC below.
*/
tcg_out_ld(s, TCG_TYPE_I64, TCG_REG_T2, TCG_REG_T1, cmp_off);
tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_T1, TCG_REG_T1, add_off);
h->base = TCG_REG_T1;
/* Mask out the page offset, except for the required alignment. */
compare_mask = s->page_mask | a_mask;
if (check_fit_tl(compare_mask, 13)) {
tcg_out_arithi(s, TCG_REG_T3, addr_reg, compare_mask, ARITH_AND);
} else {
tcg_out_movi_s32(s, TCG_REG_T3, compare_mask);
tcg_out_arith(s, TCG_REG_T3, addr_reg, TCG_REG_T3, ARITH_AND);
}
tcg_out_cmp(s, TCG_COND_NE, TCG_REG_T2, TCG_REG_T3, 0);
ldst = new_ldst_label(s);
ldst->is_ld = is_ld;
ldst->oi = oi;
ldst->addrlo_reg = addr_reg;
ldst->label_ptr[0] = s->code_ptr;
/* bne,pn %[xi]cc, label0 */
cc = addr_type == TCG_TYPE_I32 ? BPCC_ICC : BPCC_XCC;
tcg_out_bpcc0(s, COND_NE, BPCC_PN | cc, 0);
#else
/*
* If the size equals the required alignment, we can skip the test
* and allow host SIGBUS to deliver SIGBUS to the guest.
* Otherwise, test for at least natural alignment and defer
* everything else to the helper functions.
*/
if (s_bits != get_alignment_bits(opc)) {
tcg_debug_assert(check_fit_tl(a_mask, 13));
tcg_out_arithi(s, TCG_REG_G0, addr_reg, a_mask, ARITH_ANDCC);
ldst = new_ldst_label(s);
ldst->is_ld = is_ld;
ldst->oi = oi;
ldst->addrlo_reg = addr_reg;
ldst->label_ptr[0] = s->code_ptr;
/* bne,pn %icc, label0 */
tcg_out_bpcc0(s, COND_NE, BPCC_PN | BPCC_ICC, 0);
}
h->base = guest_base ? TCG_GUEST_BASE_REG : TCG_REG_G0;
#endif
/* If the guest address must be zero-extended, do in the delay slot. */
if (addr_type == TCG_TYPE_I32) {
tcg_out_ext32u(s, TCG_REG_T2, addr_reg);
h->index = TCG_REG_T2;
} else {
if (ldst) {
tcg_out_nop(s);
}
h->index = addr_reg;
}
return ldst;
}
static void tcg_out_qemu_ld(TCGContext *s, TCGReg data, TCGReg addr,
MemOpIdx oi, TCGType data_type)
{
static const int ld_opc[(MO_SSIZE | MO_BSWAP) + 1] = {
[MO_UB] = LDUB,
[MO_SB] = LDSB,
[MO_UB | MO_LE] = LDUB,
[MO_SB | MO_LE] = LDSB,
[MO_BEUW] = LDUH,
[MO_BESW] = LDSH,
[MO_BEUL] = LDUW,
[MO_BESL] = LDSW,
[MO_BEUQ] = LDX,
[MO_BESQ] = LDX,
[MO_LEUW] = LDUH_LE,
[MO_LESW] = LDSH_LE,
[MO_LEUL] = LDUW_LE,
[MO_LESL] = LDSW_LE,
[MO_LEUQ] = LDX_LE,
[MO_LESQ] = LDX_LE,
};
TCGLabelQemuLdst *ldst;
HostAddress h;
ldst = prepare_host_addr(s, &h, addr, oi, true);
tcg_out_ldst_rr(s, data, h.base, h.index,
ld_opc[get_memop(oi) & (MO_BSWAP | MO_SSIZE)]);
if (ldst) {
ldst->type = data_type;
ldst->datalo_reg = data;
ldst->raddr = tcg_splitwx_to_rx(s->code_ptr);
}
}
static void tcg_out_qemu_st(TCGContext *s, TCGReg data, TCGReg addr,
MemOpIdx oi, TCGType data_type)
{
static const int st_opc[(MO_SIZE | MO_BSWAP) + 1] = {
[MO_UB] = STB,
[MO_BEUW] = STH,
[MO_BEUL] = STW,
[MO_BEUQ] = STX,
[MO_LEUW] = STH_LE,
[MO_LEUL] = STW_LE,
[MO_LEUQ] = STX_LE,
};
TCGLabelQemuLdst *ldst;
HostAddress h;
ldst = prepare_host_addr(s, &h, addr, oi, false);
tcg_out_ldst_rr(s, data, h.base, h.index,
st_opc[get_memop(oi) & (MO_BSWAP | MO_SIZE)]);
if (ldst) {
ldst->type = data_type;
ldst->datalo_reg = data;
ldst->raddr = tcg_splitwx_to_rx(s->code_ptr);
}
}
static void tcg_out_exit_tb(TCGContext *s, uintptr_t a0)
{
if (check_fit_ptr(a0, 13)) {
tcg_out_arithi(s, TCG_REG_G0, TCG_REG_I7, 8, RETURN);
tcg_out_movi_s13(s, TCG_REG_O0, a0);
return;
} else {
intptr_t tb_diff = tcg_tbrel_diff(s, (void *)a0);
if (check_fit_ptr(tb_diff, 13)) {
tcg_out_arithi(s, TCG_REG_G0, TCG_REG_I7, 8, RETURN);
/* Note that TCG_REG_TB has been unwound to O1. */
tcg_out_arithi(s, TCG_REG_O0, TCG_REG_O1, tb_diff, ARITH_ADD);
return;
}
}
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_I0, a0 & ~0x3ff);
tcg_out_arithi(s, TCG_REG_G0, TCG_REG_I7, 8, RETURN);
tcg_out_arithi(s, TCG_REG_O0, TCG_REG_O0, a0 & 0x3ff, ARITH_OR);
}
static void tcg_out_goto_tb(TCGContext *s, int which)
{
ptrdiff_t off = tcg_tbrel_diff(s, (void *)get_jmp_target_addr(s, which));
/* Load link and indirect branch. */
set_jmp_insn_offset(s, which);
tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TB, TCG_REG_TB, off);
tcg_out_arithi(s, TCG_REG_G0, TCG_REG_TB, 0, JMPL);
/* delay slot */
tcg_out_nop(s);
set_jmp_reset_offset(s, which);
/*
* For the unlinked path of goto_tb, we need to reset TCG_REG_TB
* to the beginning of this TB.
*/
off = -tcg_current_code_size(s);
if (check_fit_i32(off, 13)) {
tcg_out_arithi(s, TCG_REG_TB, TCG_REG_TB, off, ARITH_ADD);
} else {
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_T1, off);
tcg_out_arith(s, TCG_REG_TB, TCG_REG_TB, TCG_REG_T1, ARITH_ADD);
}
}
void tb_target_set_jmp_target(const TranslationBlock *tb, int n,
uintptr_t jmp_rx, uintptr_t jmp_rw)
{
}
static void tcg_out_op(TCGContext *s, TCGOpcode opc,
const TCGArg args[TCG_MAX_OP_ARGS],
const int const_args[TCG_MAX_OP_ARGS])
{
TCGArg a0, a1, a2;
int c, c2;
/* Hoist the loads of the most common arguments. */
a0 = args[0];
a1 = args[1];
a2 = args[2];
c2 = const_args[2];
switch (opc) {
case INDEX_op_goto_ptr:
tcg_out_arithi(s, TCG_REG_G0, a0, 0, JMPL);
tcg_out_mov_delay(s, TCG_REG_TB, a0);
break;
case INDEX_op_br:
tcg_out_bpcc(s, COND_A, BPCC_PT, arg_label(a0));
tcg_out_nop(s);
break;
#define OP_32_64(x) \
glue(glue(case INDEX_op_, x), _i32): \
glue(glue(case INDEX_op_, x), _i64)
OP_32_64(ld8u):
tcg_out_ldst(s, a0, a1, a2, LDUB);
break;
OP_32_64(ld8s):
tcg_out_ldst(s, a0, a1, a2, LDSB);
break;
OP_32_64(ld16u):
tcg_out_ldst(s, a0, a1, a2, LDUH);
break;
OP_32_64(ld16s):
tcg_out_ldst(s, a0, a1, a2, LDSH);
break;
case INDEX_op_ld_i32:
case INDEX_op_ld32u_i64:
tcg_out_ldst(s, a0, a1, a2, LDUW);
break;
OP_32_64(st8):
tcg_out_ldst(s, a0, a1, a2, STB);
break;
OP_32_64(st16):
tcg_out_ldst(s, a0, a1, a2, STH);
break;
case INDEX_op_st_i32:
case INDEX_op_st32_i64:
tcg_out_ldst(s, a0, a1, a2, STW);
break;
OP_32_64(add):
c = ARITH_ADD;
goto gen_arith;
OP_32_64(sub):
c = ARITH_SUB;
goto gen_arith;
OP_32_64(and):
c = ARITH_AND;
goto gen_arith;
OP_32_64(andc):
c = ARITH_ANDN;
goto gen_arith;
OP_32_64(or):
c = ARITH_OR;
goto gen_arith;
OP_32_64(orc):
c = ARITH_ORN;
goto gen_arith;
OP_32_64(xor):
c = ARITH_XOR;
goto gen_arith;
case INDEX_op_shl_i32:
c = SHIFT_SLL;
do_shift32:
/* Limit immediate shift count lest we create an illegal insn. */
tcg_out_arithc(s, a0, a1, a2 & 31, c2, c);
break;
case INDEX_op_shr_i32:
c = SHIFT_SRL;
goto do_shift32;
case INDEX_op_sar_i32:
c = SHIFT_SRA;
goto do_shift32;
case INDEX_op_mul_i32:
c = ARITH_UMUL;
goto gen_arith;
OP_32_64(neg):
c = ARITH_SUB;
goto gen_arith1;
OP_32_64(not):
c = ARITH_ORN;
goto gen_arith1;
case INDEX_op_div_i32:
tcg_out_div32(s, a0, a1, a2, c2, 0);
break;
case INDEX_op_divu_i32:
tcg_out_div32(s, a0, a1, a2, c2, 1);
break;
case INDEX_op_brcond_i32:
tcg_out_brcond_i32(s, a2, a0, a1, const_args[1], arg_label(args[3]));
break;
case INDEX_op_setcond_i32:
tcg_out_setcond_i32(s, args[3], a0, a1, a2, c2, false);
break;
case INDEX_op_negsetcond_i32:
tcg_out_setcond_i32(s, args[3], a0, a1, a2, c2, true);
break;
case INDEX_op_movcond_i32:
tcg_out_movcond_i32(s, args[5], a0, a1, a2, c2, args[3], const_args[3]);
break;
case INDEX_op_add2_i32:
tcg_out_addsub2_i32(s, args[0], args[1], args[2], args[3],
args[4], const_args[4], args[5], const_args[5],
ARITH_ADDCC, ARITH_ADDC);
break;
case INDEX_op_sub2_i32:
tcg_out_addsub2_i32(s, args[0], args[1], args[2], args[3],
args[4], const_args[4], args[5], const_args[5],
ARITH_SUBCC, ARITH_SUBC);
break;
case INDEX_op_mulu2_i32:
c = ARITH_UMUL;
goto do_mul2;
case INDEX_op_muls2_i32:
c = ARITH_SMUL;
do_mul2:
/* The 32-bit multiply insns produce a full 64-bit result. */
tcg_out_arithc(s, a0, a2, args[3], const_args[3], c);
tcg_out_arithi(s, a1, a0, 32, SHIFT_SRLX);
break;
case INDEX_op_qemu_ld_a32_i32:
case INDEX_op_qemu_ld_a64_i32:
tcg_out_qemu_ld(s, a0, a1, a2, TCG_TYPE_I32);
break;
case INDEX_op_qemu_ld_a32_i64:
case INDEX_op_qemu_ld_a64_i64:
tcg_out_qemu_ld(s, a0, a1, a2, TCG_TYPE_I64);
break;
case INDEX_op_qemu_st_a32_i32:
case INDEX_op_qemu_st_a64_i32:
tcg_out_qemu_st(s, a0, a1, a2, TCG_TYPE_I32);
break;
case INDEX_op_qemu_st_a32_i64:
case INDEX_op_qemu_st_a64_i64:
tcg_out_qemu_st(s, a0, a1, a2, TCG_TYPE_I64);
break;
case INDEX_op_ld32s_i64:
tcg_out_ldst(s, a0, a1, a2, LDSW);
break;
case INDEX_op_ld_i64:
tcg_out_ldst(s, a0, a1, a2, LDX);
break;
case INDEX_op_st_i64:
tcg_out_ldst(s, a0, a1, a2, STX);
break;
case INDEX_op_shl_i64:
c = SHIFT_SLLX;
do_shift64:
/* Limit immediate shift count lest we create an illegal insn. */
tcg_out_arithc(s, a0, a1, a2 & 63, c2, c);
break;
case INDEX_op_shr_i64:
c = SHIFT_SRLX;
goto do_shift64;
case INDEX_op_sar_i64:
c = SHIFT_SRAX;
goto do_shift64;
case INDEX_op_mul_i64:
c = ARITH_MULX;
goto gen_arith;
case INDEX_op_div_i64:
c = ARITH_SDIVX;
goto gen_arith;
case INDEX_op_divu_i64:
c = ARITH_UDIVX;
goto gen_arith;
case INDEX_op_brcond_i64:
tcg_out_brcond_i64(s, a2, a0, a1, const_args[1], arg_label(args[3]));
break;
case INDEX_op_setcond_i64:
tcg_out_setcond_i64(s, args[3], a0, a1, a2, c2, false);
break;
case INDEX_op_negsetcond_i64:
tcg_out_setcond_i64(s, args[3], a0, a1, a2, c2, true);
break;
case INDEX_op_movcond_i64:
tcg_out_movcond_i64(s, args[5], a0, a1, a2, c2, args[3], const_args[3]);
break;
case INDEX_op_add2_i64:
tcg_out_addsub2_i64(s, args[0], args[1], args[2], args[3], args[4],
const_args[4], args[5], const_args[5], false);
break;
case INDEX_op_sub2_i64:
tcg_out_addsub2_i64(s, args[0], args[1], args[2], args[3], args[4],
const_args[4], args[5], const_args[5], true);
break;
case INDEX_op_muluh_i64:
tcg_out_arith(s, args[0], args[1], args[2], ARITH_UMULXHI);
break;
gen_arith:
tcg_out_arithc(s, a0, a1, a2, c2, c);
break;
gen_arith1:
tcg_out_arithc(s, a0, TCG_REG_G0, a1, const_args[1], c);
break;
case INDEX_op_mb:
tcg_out_mb(s, a0);
break;
case INDEX_op_mov_i32: /* Always emitted via tcg_out_mov. */
case INDEX_op_mov_i64:
case INDEX_op_call: /* Always emitted via tcg_out_call. */
case INDEX_op_exit_tb: /* Always emitted via tcg_out_exit_tb. */
case INDEX_op_goto_tb: /* Always emitted via tcg_out_goto_tb. */
case INDEX_op_ext8s_i32: /* Always emitted via tcg_reg_alloc_op. */
case INDEX_op_ext8s_i64:
case INDEX_op_ext8u_i32:
case INDEX_op_ext8u_i64:
case INDEX_op_ext16s_i32:
case INDEX_op_ext16s_i64:
case INDEX_op_ext16u_i32:
case INDEX_op_ext16u_i64:
case INDEX_op_ext32s_i64:
case INDEX_op_ext32u_i64:
case INDEX_op_ext_i32_i64:
case INDEX_op_extu_i32_i64:
default:
g_assert_not_reached();
}
}
static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op)
{
switch (op) {
case INDEX_op_goto_ptr:
return C_O0_I1(r);
case INDEX_op_ld8u_i32:
case INDEX_op_ld8u_i64:
case INDEX_op_ld8s_i32:
case INDEX_op_ld8s_i64:
case INDEX_op_ld16u_i32:
case INDEX_op_ld16u_i64:
case INDEX_op_ld16s_i32:
case INDEX_op_ld16s_i64:
case INDEX_op_ld_i32:
case INDEX_op_ld32u_i64:
case INDEX_op_ld32s_i64:
case INDEX_op_ld_i64:
case INDEX_op_neg_i32:
case INDEX_op_neg_i64:
case INDEX_op_not_i32:
case INDEX_op_not_i64:
case INDEX_op_ext32s_i64:
case INDEX_op_ext32u_i64:
case INDEX_op_ext_i32_i64:
case INDEX_op_extu_i32_i64:
case INDEX_op_qemu_ld_a32_i32:
case INDEX_op_qemu_ld_a64_i32:
case INDEX_op_qemu_ld_a32_i64:
case INDEX_op_qemu_ld_a64_i64:
return C_O1_I1(r, r);
case INDEX_op_st8_i32:
case INDEX_op_st8_i64:
case INDEX_op_st16_i32:
case INDEX_op_st16_i64:
case INDEX_op_st_i32:
case INDEX_op_st32_i64:
case INDEX_op_st_i64:
case INDEX_op_qemu_st_a32_i32:
case INDEX_op_qemu_st_a64_i32:
case INDEX_op_qemu_st_a32_i64:
case INDEX_op_qemu_st_a64_i64:
return C_O0_I2(rZ, r);
case INDEX_op_add_i32:
case INDEX_op_add_i64:
case INDEX_op_mul_i32:
case INDEX_op_mul_i64:
case INDEX_op_div_i32:
case INDEX_op_div_i64:
case INDEX_op_divu_i32:
case INDEX_op_divu_i64:
case INDEX_op_sub_i32:
case INDEX_op_sub_i64:
case INDEX_op_and_i32:
case INDEX_op_and_i64:
case INDEX_op_andc_i32:
case INDEX_op_andc_i64:
case INDEX_op_or_i32:
case INDEX_op_or_i64:
case INDEX_op_orc_i32:
case INDEX_op_orc_i64:
case INDEX_op_xor_i32:
case INDEX_op_xor_i64:
case INDEX_op_shl_i32:
case INDEX_op_shl_i64:
case INDEX_op_shr_i32:
case INDEX_op_shr_i64:
case INDEX_op_sar_i32:
case INDEX_op_sar_i64:
case INDEX_op_setcond_i32:
case INDEX_op_setcond_i64:
case INDEX_op_negsetcond_i32:
case INDEX_op_negsetcond_i64:
return C_O1_I2(r, rZ, rJ);
case INDEX_op_brcond_i32:
case INDEX_op_brcond_i64:
return C_O0_I2(rZ, rJ);
case INDEX_op_movcond_i32:
case INDEX_op_movcond_i64:
return C_O1_I4(r, rZ, rJ, rI, 0);
case INDEX_op_add2_i32:
case INDEX_op_add2_i64:
case INDEX_op_sub2_i32:
case INDEX_op_sub2_i64:
return C_O2_I4(r, r, rZ, rZ, rJ, rJ);
case INDEX_op_mulu2_i32:
case INDEX_op_muls2_i32:
return C_O2_I2(r, r, rZ, rJ);
case INDEX_op_muluh_i64:
return C_O1_I2(r, r, r);
default:
g_assert_not_reached();
}
}
static void tcg_target_init(TCGContext *s)
{
/*
* Only probe for the platform and capabilities if we haven't already
* determined maximum values at compile time.
*/
#ifndef use_vis3_instructions
{
unsigned long hwcap = qemu_getauxval(AT_HWCAP);
use_vis3_instructions = (hwcap & HWCAP_SPARC_VIS3) != 0;
}
#endif
tcg_target_available_regs[TCG_TYPE_I32] = ALL_GENERAL_REGS;
tcg_target_available_regs[TCG_TYPE_I64] = ALL_GENERAL_REGS;
tcg_target_call_clobber_regs = 0;
tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_G1);
tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_G2);
tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_G3);
tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_G4);
tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_G5);
tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_G6);
tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_G7);
tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_O0);
tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_O1);
tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_O2);
tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_O3);
tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_O4);
tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_O5);
tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_O6);
tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_O7);
s->reserved_regs = 0;
tcg_regset_set_reg(s->reserved_regs, TCG_REG_G0); /* zero */
tcg_regset_set_reg(s->reserved_regs, TCG_REG_G6); /* reserved for os */
tcg_regset_set_reg(s->reserved_regs, TCG_REG_G7); /* thread pointer */
tcg_regset_set_reg(s->reserved_regs, TCG_REG_I6); /* frame pointer */
tcg_regset_set_reg(s->reserved_regs, TCG_REG_I7); /* return address */
tcg_regset_set_reg(s->reserved_regs, TCG_REG_O6); /* stack pointer */
tcg_regset_set_reg(s->reserved_regs, TCG_REG_T1); /* for internal use */
tcg_regset_set_reg(s->reserved_regs, TCG_REG_T2); /* for internal use */
tcg_regset_set_reg(s->reserved_regs, TCG_REG_T3); /* for internal use */
}
#define ELF_HOST_MACHINE EM_SPARCV9
typedef struct {
DebugFrameHeader h;
uint8_t fde_def_cfa[4];
uint8_t fde_win_save;
uint8_t fde_ret_save[3];
} DebugFrame;
static const DebugFrame debug_frame = {
.h.cie.len = sizeof(DebugFrameCIE)-4, /* length after .len member */
.h.cie.id = -1,
.h.cie.version = 1,
.h.cie.code_align = 1,
.h.cie.data_align = -sizeof(void *) & 0x7f,
.h.cie.return_column = 15, /* o7 */
/* Total FDE size does not include the "len" member. */
.h.fde.len = sizeof(DebugFrame) - offsetof(DebugFrame, h.fde.cie_offset),
.fde_def_cfa = {
12, 30, /* DW_CFA_def_cfa i6, 2047 */
(2047 & 0x7f) | 0x80, (2047 >> 7)
},
.fde_win_save = 0x2d, /* DW_CFA_GNU_window_save */
.fde_ret_save = { 9, 15, 31 }, /* DW_CFA_register o7, i7 */
};
void tcg_register_jit(const void *buf, size_t buf_size)
{
tcg_register_jit_int(buf, buf_size, &debug_frame, sizeof(debug_frame));
}