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authorClaudio Fontana <Claudio.Fontana@huawei.com>2013-05-13 03:33:57 +0000
committerPeter Maydell <peter.maydell@linaro.org>2013-05-20 19:13:21 +0100
commit91777b11f8e8f200fdfa2fd9dd2923e6bf15cdda (patch)
tree7aa259305f037372fb8b22608e1834ca77e12261
parentccb2a02e0a2d0e0e0c67ad08f9c82accf778970f (diff)
downloadqemu-arm-91777b11f8e8f200fdfa2fd9dd2923e6bf15cdda.tar.gz
tcg/aarch64: implement new TCG target for aarch64
add preliminary support for TCG target aarch64. Signed-off-by: Claudio Fontana <claudio.fontana@huawei.com>
-rw-r--r--include/exec/exec-all.h5
-rw-r--r--tcg/aarch64/tcg-target.c1084
-rw-r--r--tcg/aarch64/tcg-target.h106
3 files changed, 1194 insertions, 1 deletions
diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h
index 6362074e9c..5c31863429 100644
--- a/include/exec/exec-all.h
+++ b/include/exec/exec-all.h
@@ -128,7 +128,7 @@ static inline void tlb_flush(CPUArchState *env, int flush_global)
#if defined(__arm__) || defined(_ARCH_PPC) \
|| defined(__x86_64__) || defined(__i386__) \
- || defined(__sparc__) \
+ || defined(__sparc__) || defined(__aarch64__) \
|| defined(CONFIG_TCG_INTERPRETER)
#define USE_DIRECT_JUMP
#endif
@@ -230,6 +230,9 @@ static inline void tb_set_jmp_target1(uintptr_t jmp_addr, uintptr_t addr)
*(uint32_t *)jmp_addr = addr - (jmp_addr + 4);
/* no need to flush icache explicitly */
}
+#elif defined(__aarch64__)
+void aarch64_tb_set_jmp_target(uintptr_t jmp_addr, uintptr_t addr);
+#define tb_set_jmp_target1 aarch64_tb_set_jmp_target
#elif defined(__arm__)
static inline void tb_set_jmp_target1(uintptr_t jmp_addr, uintptr_t addr)
{
diff --git a/tcg/aarch64/tcg-target.c b/tcg/aarch64/tcg-target.c
new file mode 100644
index 0000000000..f24a5676a3
--- /dev/null
+++ b/tcg/aarch64/tcg-target.c
@@ -0,0 +1,1084 @@
+/*
+ * Initial TCG Implementation for aarch64
+ *
+ * Copyright (c) 2013 Huawei Technologies Duesseldorf GmbH
+ * Written by Claudio Fontana
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or
+ * (at your option) any later version.
+ *
+ * See the COPYING file in the top-level directory for details.
+ */
+
+#ifdef TARGET_WORDS_BIGENDIAN
+#error "Sorry, bigendian target not supported yet."
+#endif /* TARGET_WORDS_BIGENDIAN */
+
+#ifndef NDEBUG
+static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
+ "%x0", "%x1", "%x2", "%x3", "%x4", "%x5", "%x6", "%x7",
+ "%x8", "%x9", "%x10", "%x11", "%x12", "%x13", "%x14", "%x15",
+ "%x16", "%x17", "%x18", "%x19", "%x20", "%x21", "%x22", "%x23",
+ "%x24", "%x25", "%x26", "%x27", "%x28",
+ "%fp", /* frame pointer */
+ "%lr", /* link register */
+ "%sp", /* stack pointer */
+};
+#endif /* NDEBUG */
+
+static const int tcg_target_reg_alloc_order[] = {
+ TCG_REG_X20, TCG_REG_X21, TCG_REG_X22, TCG_REG_X23,
+ TCG_REG_X24, TCG_REG_X25, TCG_REG_X26, TCG_REG_X27,
+ TCG_REG_X28,
+
+ TCG_REG_X9, TCG_REG_X10, TCG_REG_X11, TCG_REG_X12,
+ TCG_REG_X13, TCG_REG_X14, TCG_REG_X15,
+
+ TCG_REG_X0, TCG_REG_X1, TCG_REG_X2, TCG_REG_X3,
+ TCG_REG_X4, TCG_REG_X5, TCG_REG_X6, TCG_REG_X7,
+};
+
+static const int tcg_target_call_iarg_regs[8] = {
+ TCG_REG_X0, TCG_REG_X1, TCG_REG_X2, TCG_REG_X3,
+ TCG_REG_X4, TCG_REG_X5, TCG_REG_X6, TCG_REG_X7
+};
+static const int tcg_target_call_oarg_regs[1] = {
+ TCG_REG_X0
+};
+
+static inline void reloc_pc26(void *code_ptr, tcg_target_long target)
+{
+ tcg_target_long offset;
+ offset = (target - (tcg_target_long)code_ptr) / 4;
+ offset &= 0x03ffffff;
+
+ /* mask away previous PC_REL26 parameter contents, then set offset */
+ *(uint32_t *)code_ptr &= 0xfc000000;
+ *(uint32_t *)code_ptr |= offset;
+}
+
+static inline void patch_reloc(uint8_t *code_ptr, int type,
+ tcg_target_long value, tcg_target_long addend)
+{
+ switch (type) {
+ case R_AARCH64_JUMP26:
+ case R_AARCH64_CALL26:
+ reloc_pc26(code_ptr, value);
+ break;
+ default:
+ tcg_abort();
+ }
+}
+
+/* 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_set32(ct->u.regs, 0, (1ULL << TCG_TARGET_NB_REGS) - 1);
+ break;
+ case 'l': /* qemu_ld / qemu_st address, data_reg */
+ ct->ct |= TCG_CT_REG;
+ tcg_regset_set32(ct->u.regs, 0, (1ULL << TCG_TARGET_NB_REGS) - 1);
+#ifdef CONFIG_SOFTMMU
+ /* x0 and x1 will be overwritten when reading the tlb entry,
+ and x2, and x3 for helper args, better to avoid using them. */
+ tcg_regset_reset_reg(ct->u.regs, TCG_REG_X0);
+ tcg_regset_reset_reg(ct->u.regs, TCG_REG_X1);
+ tcg_regset_reset_reg(ct->u.regs, TCG_REG_X2);
+ tcg_regset_reset_reg(ct->u.regs, TCG_REG_X3);
+#endif
+ break;
+ default:
+ return -1;
+ }
+
+ ct_str++;
+ *pct_str = ct_str;
+ return 0;
+}
+
+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;
+
+ return 0;
+}
+
+enum aarch64_cond_code {
+ COND_EQ = 0x0,
+ COND_NE = 0x1,
+ COND_CS = 0x2, /* Unsigned greater or equal */
+ COND_HS = 0x2, /* ALIAS greater or equal */
+ COND_CC = 0x3, /* Unsigned less than */
+ COND_LO = 0x3, /* ALIAS Lower */
+ COND_MI = 0x4, /* Negative */
+ COND_PL = 0x5, /* Zero or greater */
+ COND_VS = 0x6, /* Overflow */
+ COND_VC = 0x7, /* No overflow */
+ COND_HI = 0x8, /* Unsigned greater than */
+ COND_LS = 0x9, /* Unsigned less or equal */
+ COND_GE = 0xa,
+ COND_LT = 0xb,
+ COND_GT = 0xc,
+ COND_LE = 0xd,
+ COND_AL = 0xe,
+ COND_NV = 0xf,
+};
+
+static const enum aarch64_cond_code tcg_cond_to_aarch64_cond[] = {
+ [TCG_COND_EQ] = COND_EQ,
+ [TCG_COND_NE] = COND_NE,
+ [TCG_COND_LT] = COND_LT,
+ [TCG_COND_GE] = COND_GE,
+ [TCG_COND_LE] = COND_LE,
+ [TCG_COND_GT] = COND_GT,
+ /* unsigned */
+ [TCG_COND_LTU] = COND_LO,
+ [TCG_COND_GTU] = COND_HI,
+ [TCG_COND_GEU] = COND_HS,
+ [TCG_COND_LEU] = COND_LS,
+};
+
+/* opcodes for LDR / STR instructions with base + simm9 addressing */
+enum aarch64_ldst_op_data { /* size of the data moved */
+ LDST_8 = 0x38,
+ LDST_16 = 0x78,
+ LDST_32 = 0xb8,
+ LDST_64 = 0xf8,
+};
+enum aarch64_ldst_op_type { /* type of operation */
+ LDST_ST = 0x0, /* store */
+ LDST_LD = 0x4, /* load */
+ LDST_LD_S_X = 0x8, /* load and sign-extend into Xt */
+ LDST_LD_S_W = 0xc, /* load and sign-extend into Wt */
+};
+
+enum aarch64_arith_opc {
+ ARITH_ADD = 0x0b,
+ ARITH_SUB = 0x4b,
+ ARITH_AND = 0x0a,
+ ARITH_OR = 0x2a,
+ ARITH_XOR = 0x4a
+};
+
+enum aarch64_srr_opc {
+ SRR_SHL = 0x0,
+ SRR_SHR = 0x4,
+ SRR_SAR = 0x8,
+ SRR_ROR = 0xc
+};
+
+static inline enum aarch64_ldst_op_data
+aarch64_ldst_get_data(TCGOpcode tcg_op)
+{
+ switch (tcg_op) {
+ case INDEX_op_ld8u_i32: case INDEX_op_ld8s_i32:
+ case INDEX_op_ld8u_i64: case INDEX_op_ld8s_i64:
+ case INDEX_op_st8_i32: case INDEX_op_st8_i64:
+ return LDST_8;
+
+ case INDEX_op_ld16u_i32: case INDEX_op_ld16s_i32:
+ case INDEX_op_ld16u_i64: case INDEX_op_ld16s_i64:
+ case INDEX_op_st16_i32: case INDEX_op_st16_i64:
+ return LDST_16;
+
+ case INDEX_op_ld_i32: case INDEX_op_st_i32:
+ case INDEX_op_ld32u_i64: case INDEX_op_ld32s_i64:
+ case INDEX_op_st32_i64:
+ return LDST_32;
+
+ case INDEX_op_ld_i64: case INDEX_op_st_i64:
+ return LDST_64;
+
+ default:
+ tcg_abort();
+ }
+}
+
+static inline enum aarch64_ldst_op_type
+aarch64_ldst_get_type(TCGOpcode tcg_op)
+{
+ switch (tcg_op) {
+ case INDEX_op_st8_i32: case INDEX_op_st16_i32:
+ case INDEX_op_st8_i64: case INDEX_op_st16_i64:
+ case INDEX_op_st_i32:
+ case INDEX_op_st32_i64:
+ case INDEX_op_st_i64:
+ return LDST_ST;
+
+ case INDEX_op_ld8u_i32: case INDEX_op_ld16u_i32:
+ case INDEX_op_ld8u_i64: case INDEX_op_ld16u_i64:
+ case INDEX_op_ld_i32:
+ case INDEX_op_ld32u_i64:
+ case INDEX_op_ld_i64:
+ return LDST_LD;
+
+ case INDEX_op_ld8s_i32: case INDEX_op_ld16s_i32:
+ return LDST_LD_S_W;
+
+ case INDEX_op_ld8s_i64: case INDEX_op_ld16s_i64:
+ case INDEX_op_ld32s_i64:
+ return LDST_LD_S_X;
+
+ default:
+ tcg_abort();
+ }
+}
+
+static inline uint32_t tcg_in32(TCGContext *s)
+{
+ uint32_t v; v = *(uint32_t *)s->code_ptr;
+ return v;
+}
+
+static inline void tcg_out_ldst_9(TCGContext *s,
+ enum aarch64_ldst_op_data op_data,
+ enum aarch64_ldst_op_type op_type,
+ int rd, int rn, tcg_target_long offset)
+{
+ /* use LDUR with BASE register with 9bit signed unscaled offset */
+ unsigned int mod, off;
+
+ if (offset < 0) {
+ off = (256 + offset);
+ mod = 0x1;
+
+ } else {
+ off = offset;
+ mod = 0x0;
+ }
+
+ mod |= op_type;
+ tcg_out32(s, op_data << 24 | mod << 20 | off << 12 | rn << 5 | rd);
+}
+
+static inline void tcg_out_movr(TCGContext *s, int ext, int rd, int source)
+{
+ /* register to register move using MOV (shifted register with no shift) */
+ /* using MOV 0x2a0003e0 | (shift).. */
+ unsigned int base; base = ext ? 0xaa0003e0 : 0x2a0003e0;
+ tcg_out32(s, base | source << 16 | rd);
+}
+
+static inline void tcg_out_movi32(TCGContext *s, int ext, int rd,
+ uint32_t value)
+{
+ uint32_t half, base, movk = 0;
+ if (!value) {
+ tcg_out_movr(s, ext, rd, TCG_REG_XZR);
+ return;
+ }
+ /* construct halfwords of the immediate with MOVZ with LSL */
+ /* using MOVZ 0x52800000 | extended reg.. */
+ base = ext ? 0xd2800000 : 0x52800000;
+
+ half = value & 0xffff;
+ if (half) {
+ tcg_out32(s, base | half << 5 | rd);
+ movk = 0x20000000; /* morph next MOVZ into MOVK */
+ }
+
+ half = value >> 16;
+ if (half) { /* add shift 0x00200000. Op can be MOVZ or MOVK */
+ tcg_out32(s, base | movk | 0x00200000 | half << 5 | rd);
+ }
+}
+
+static inline void tcg_out_movi64(TCGContext *s, int rd, uint64_t value)
+{
+ uint32_t half, base, movk = 0, shift = 0;
+ if (!value) {
+ tcg_out_movr(s, 1, rd, TCG_REG_XZR);
+ return;
+ }
+ /* construct halfwords of the immediate with MOVZ with LSL */
+ /* using MOVZ 0x52800000 | extended reg.. */
+ base = 0xd2800000;
+
+ while (value) {
+ half = value & 0xffff;
+ if (half) {
+ /* Op can be MOVZ or MOVK */
+ tcg_out32(s, base | movk | shift | half << 5 | rd);
+ if (!movk)
+ movk = 0x20000000; /* morph next MOVZs into MOVKs */
+ }
+ value >>= 16;
+ shift += 0x00200000;
+ }
+}
+
+static inline void tcg_out_ldst_r(TCGContext *s,
+ enum aarch64_ldst_op_data op_data,
+ enum aarch64_ldst_op_type op_type,
+ int rd, int base, int regoff)
+{
+ /* I can't explain the 0x6000, but objdump/gdb from linaro does that */
+ /* load from memory to register using base + 64bit register offset */
+ /* using f.e. STR Wt, [Xn, Xm] 0xb8600800|(regoff << 16)|(base << 5)|rd */
+ tcg_out32(s, 0x00206800
+ | op_data << 24 | op_type << 20 | regoff << 16 | base << 5 | rd);
+}
+
+/* solve the whole ldst problem */
+static inline void tcg_out_ldst(TCGContext *s, enum aarch64_ldst_op_data data,
+ enum aarch64_ldst_op_type type,
+ int rd, int rn, tcg_target_long offset)
+{
+ if (offset > -256 && offset < 256) {
+ tcg_out_ldst_9(s, data, type, rd, rn, offset);
+
+ } else {
+ tcg_out_movi64(s, TCG_REG_X8, offset);
+ tcg_out_ldst_r(s, data, type, rd, rn, TCG_REG_X8);
+ }
+}
+
+static inline void tcg_out_movi(TCGContext *s, TCGType type,
+ TCGReg rd, tcg_target_long value)
+{
+ if (type == TCG_TYPE_I64)
+ tcg_out_movi64(s, rd, value);
+ else
+ tcg_out_movi32(s, 0, rd, value);
+}
+
+/* mov alias implemented with add immediate, useful to move to/from SP */
+static inline void tcg_out_movr_sp(TCGContext *s, int ext, int rd, int rn)
+{
+ /* using ADD 0x11000000 | (ext) | rn << 5 | rd */
+ unsigned int base; base = ext ? 0x91000000 : 0x11000000;
+ tcg_out32(s, base | rn << 5 | rd);
+}
+
+static inline void tcg_out_mov(TCGContext *s,
+ TCGType type, TCGReg ret, TCGReg arg)
+{
+ if (ret != arg)
+ tcg_out_movr(s, type == TCG_TYPE_I64, ret, arg);
+}
+
+static inline void tcg_out_ld(TCGContext *s, TCGType type, TCGReg arg,
+ TCGReg arg1, tcg_target_long arg2)
+{
+ tcg_out_ldst(s, (type == TCG_TYPE_I64) ? LDST_64 : LDST_32, LDST_LD,
+ 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, (type == TCG_TYPE_I64) ? LDST_64 : LDST_32, LDST_ST,
+ arg, arg1, arg2);
+}
+
+static inline void tcg_out_arith(TCGContext *s, enum aarch64_arith_opc opc,
+ int ext, int rd, int rn, int rm)
+{
+ /* Using shifted register arithmetic operations */
+ /* if extended registry operation (64bit) just or with 0x80 << 24 */
+ unsigned int base; base = ext ? (0x80 | opc) << 24 : opc << 24;
+ tcg_out32(s, base | rm << 16 | rn << 5 | rd);
+}
+
+static inline void tcg_out_mul(TCGContext *s, int ext, int rd, int rn, int rm)
+{
+ /* Using MADD 0x1b000000 with Ra = wzr alias MUL 0x1b007c00 */
+ unsigned int base; base = ext ? 0x9b007c00 : 0x1b007c00;
+ tcg_out32(s, base | rm << 16 | rn << 5 | rd);
+}
+
+static inline void tcg_out_shiftrot_reg(TCGContext *s,
+ enum aarch64_srr_opc opc, int ext,
+ int rd, int rn, int rm)
+{
+ /* using 2-source data processing instructions 0x1ac02000 */
+ unsigned int base; base = ext ? 0x9ac02000 : 0x1ac02000;
+ tcg_out32(s, base | rm << 16 | opc << 8 | rn << 5 | rd);
+}
+
+static inline void tcg_out_ubfm(TCGContext *s, int ext,
+ int rd, int rn, unsigned int a, unsigned int b)
+{
+ /* Using UBFM 0x53000000 Wd, Wn, a, b - Why ext has 4? */
+ unsigned int base; base = ext ? 0xd3400000 : 0x53000000;
+ tcg_out32(s, base | a << 16 | b << 10 | rn << 5 | rd);
+}
+
+static inline void tcg_out_sbfm(TCGContext *s, int ext,
+ int rd, int rn, unsigned int a, unsigned int b)
+{
+ /* Using SBFM 0x13000000 Wd, Wn, a, b - Why ext has 4? */
+ unsigned int base; base = ext ? 0x93400000 : 0x13000000;
+ tcg_out32(s, base | a << 16 | b << 10 | rn << 5 | rd);
+}
+
+static inline void tcg_out_extr(TCGContext *s, int ext,
+ int rd, int rn, int rm, unsigned int a)
+{
+ /* Using EXTR 0x13800000 Wd, Wn, Wm, a - Why ext has 4? */
+ unsigned int base; base = ext ? 0x93c00000 : 0x13800000;
+ tcg_out32(s, base | rm << 16 | a << 10 | rn << 5 | rd);
+}
+
+static inline void tcg_out_shl(TCGContext *s, int ext,
+ int rd, int rn, unsigned int m)
+{
+ int bits, max;
+ bits = ext ? 64 : 32; max = bits - 1;
+ tcg_out_ubfm(s, ext, rd, rn, bits - (m & max), max - (m & max));
+}
+
+static inline void tcg_out_shr(TCGContext *s, int ext,
+ int rd, int rn, unsigned int m)
+{
+ int max; max = ext ? 63 : 31;
+ tcg_out_ubfm(s, ext, rd, rn, m & max, max);
+}
+
+static inline void tcg_out_sar(TCGContext *s, int ext,
+ int rd, int rn, unsigned int m)
+{
+ int max; max = ext ? 63 : 31;
+ tcg_out_sbfm(s, ext, rd, rn, m & max, max);
+}
+
+static inline void tcg_out_rotr(TCGContext *s, int ext,
+ int rd, int rn, unsigned int m)
+{
+ int max; max = ext ? 63 : 31;
+ tcg_out_extr(s, ext, rd, rn, rn, m & max);
+}
+
+static inline void tcg_out_rotl(TCGContext *s, int ext,
+ int rd, int rn, unsigned int m)
+{
+ int bits, max;
+ bits = ext ? 64 : 32; max = bits - 1;
+ tcg_out_extr(s, ext, rd, rn, rn, bits - (m & max));
+}
+
+static inline void tcg_out_cmp(TCGContext *s, int ext,
+ int rn, int rm)
+{
+ /* Using CMP alias SUBS wzr, Wn, Wm */
+ unsigned int base; base = ext ? 0xeb00001f : 0x6b00001f;
+ tcg_out32(s, base | rm << 16 | rn << 5);
+}
+
+static inline void tcg_out_csel(TCGContext *s, int ext,
+ int rd, int rn, int rm,
+ enum aarch64_cond_code c)
+{
+ /* Using CSEL 0x1a800000 wd, wn, wm, c */
+ unsigned int base; base = ext ? 0x9a800000 : 0x1a800000;
+ tcg_out32(s, base | rm << 16 | c << 12 | rn << 5 | rd);
+}
+
+static inline void tcg_out_goto(TCGContext *s, tcg_target_long target)
+{
+ tcg_target_long offset;
+ offset = (target - (tcg_target_long)s->code_ptr) / 4;
+
+ if (offset <= -0x02000000 || offset >= 0x02000000) {
+ /* out of 26bit range */
+ tcg_abort();
+ }
+
+ tcg_out32(s, 0x14000000 | (offset & 0x03ffffff));
+}
+
+static inline void tcg_out_goto_noaddr(TCGContext *s)
+{
+ /* We pay attention here to not modify the branch target by
+ reading from the buffer. This ensure that caches and memory are
+ kept coherent during retranslation. */
+ uint32_t insn; insn = tcg_in32(s);
+ insn |= 0x14000000;
+ tcg_out32(s, insn);
+}
+
+/* offset is scaled and relative! Check range before calling! */
+static inline void tcg_out_goto_cond(TCGContext *s, TCGCond c,
+ tcg_target_long offset)
+{
+ tcg_out32(s, 0x54000000 | tcg_cond_to_aarch64_cond[c] | offset << 5);
+}
+
+static inline void tcg_out_callr(TCGContext *s, int reg)
+{
+ tcg_out32(s, 0xd63f0000 | reg << 5);
+}
+
+static inline void tcg_out_gotor(TCGContext *s, int reg)
+{
+ tcg_out32(s, 0xd61f0000 | reg << 5);
+}
+
+static inline void tcg_out_call(TCGContext *s, tcg_target_long target)
+{
+ tcg_target_long offset;
+
+ offset = (target - (tcg_target_long)s->code_ptr) / 4;
+
+ if (offset <= -0x02000000 || offset >= 0x02000000) { /* out of 26bit rng */
+ tcg_out_movi64(s, TCG_REG_X8, target);
+ tcg_out_callr(s, TCG_REG_X8);
+
+ } else {
+ tcg_out32(s, 0x94000000 | (offset & 0x03ffffff));
+ }
+}
+
+static inline void tcg_out_ret(TCGContext *s)
+{
+ /* emit RET { LR } */
+ tcg_out32(s, 0xd65f03c0);
+}
+
+void aarch64_tb_set_jmp_target(uintptr_t jmp_addr, uintptr_t addr)
+{
+ tcg_target_long target, offset;
+ target = (tcg_target_long)addr;
+ offset = (target - (tcg_target_long)jmp_addr) / 4;
+
+ if (offset <= -0x02000000 || offset >= 0x02000000) {
+ /* out of 26bit range */
+ tcg_abort();
+ }
+
+ patch_reloc((uint8_t *)jmp_addr, R_AARCH64_JUMP26, target, 0);
+ flush_icache_range(jmp_addr, jmp_addr + 4);
+}
+
+static inline void tcg_out_goto_label(TCGContext *s, int label_index)
+{
+ TCGLabel *l = &s->labels[label_index];
+
+ if (!l->has_value) {
+ tcg_out_reloc(s, s->code_ptr, R_AARCH64_JUMP26, label_index, 0);
+ tcg_out_goto_noaddr(s);
+
+ } else {
+ tcg_out_goto(s, l->u.value);
+ }
+}
+
+static inline void tcg_out_goto_label_cond(TCGContext *s, TCGCond c, int label_index)
+{
+ tcg_target_long offset;
+ /* backward conditional jump never seems to happen in practice,
+ so just always use the branch trampoline */
+ c = tcg_invert_cond(c);
+ offset = 2; /* skip current instr and the next */
+ tcg_out_goto_cond(s, c, offset);
+ tcg_out_goto_label(s, label_index); /* emit 26bit jump */
+}
+
+#ifdef CONFIG_SOFTMMU
+#include "exec/softmmu_defs.h"
+
+/* 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,
+};
+
+#endif /* CONFIG_SOFTMMU */
+
+static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, int opc)
+{
+ int addr_reg, data_reg;
+#ifdef CONFIG_SOFTMMU
+ int mem_index, s_bits;
+#endif
+ data_reg = args[0];
+ addr_reg = args[1];
+
+#ifdef CONFIG_SOFTMMU
+ mem_index = args[2];
+ s_bits = opc & 3;
+
+ /* Should generate something like the following:
+ * shr x8, addr_reg, #TARGET_PAGE_BITS
+ * and x0, x8, #(CPU_TLB_SIZE - 1) @ Assumption: CPU_TLB_BITS <= 8
+ * add x0, env, x0 lsl #CPU_TLB_ENTRY_BITS
+ */
+# if CPU_TLB_BITS > 8
+# error "CPU_TLB_BITS too large"
+# endif
+
+ /* all arguments passed via registers */
+ tcg_out_movr(s, 1, TCG_REG_X0, TCG_AREG0);
+ tcg_out_movr(s, 1, TCG_REG_X1, addr_reg);
+ tcg_out_movi32(s, 0, TCG_REG_X2, mem_index);
+
+ tcg_out_movi64(s, TCG_REG_X8, (uint64_t)qemu_ld_helpers[s_bits]);
+ tcg_out_callr(s, TCG_REG_X8);
+
+ if (opc & 0x04) { /* sign extend */
+ unsigned int bits; bits = 8 * (1 << s_bits) - 1;
+ tcg_out_sbfm(s, 1, data_reg, TCG_REG_X0, 0, bits); /* 7|15|31 */
+
+ } else {
+ tcg_out_movr(s, 1, data_reg, TCG_REG_X0);
+ }
+
+#else /* !CONFIG_SOFTMMU */
+ tcg_abort(); /* TODO */
+#endif
+}
+
+static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, int opc)
+{
+ int addr_reg, data_reg;
+#ifdef CONFIG_SOFTMMU
+ int mem_index, s_bits;
+#endif
+ data_reg = args[0];
+ addr_reg = args[1];
+
+#ifdef CONFIG_SOFTMMU
+ mem_index = args[2];
+ s_bits = opc & 3;
+
+ /* Should generate something like the following:
+ * shr x8, addr_reg, #TARGET_PAGE_BITS
+ * and x0, x8, #(CPU_TLB_SIZE - 1) @ Assumption: CPU_TLB_BITS <= 8
+ * add x0, env, x0 lsl #CPU_TLB_ENTRY_BITS
+ */
+# if CPU_TLB_BITS > 8
+# error "CPU_TLB_BITS too large"
+# endif
+
+ /* all arguments passed via registers */
+ tcg_out_movr(s, 1, TCG_REG_X0, TCG_AREG0);
+ tcg_out_movr(s, 1, TCG_REG_X1, addr_reg);
+ tcg_out_movr(s, 1, TCG_REG_X2, data_reg);
+ tcg_out_movi32(s, 0, TCG_REG_X3, mem_index);
+
+ tcg_out_movi64(s, TCG_REG_X8, (uint64_t)qemu_st_helpers[s_bits]);
+ tcg_out_callr(s, TCG_REG_X8);
+
+#else /* !CONFIG_SOFTMMU */
+ tcg_abort(); /* TODO */
+#endif
+}
+
+static uint8_t *tb_ret_addr;
+
+/* callee stack use example:
+ stp x29, x30, [sp,#-32]!
+ mov x29, sp
+ stp x1, x2, [sp,#16]
+ ...
+ ldp x1, x2, [sp,#16]
+ ldp x29, x30, [sp],#32
+ ret
+*/
+
+/* push r1 and r2, and alloc stack space for a total of
+ alloc_n elements (1 element=16 bytes, must be between 1 and 31. */
+static inline void tcg_out_push_p(TCGContext *s,
+ TCGReg r1, TCGReg r2, int alloc_n)
+{
+ /* using indexed scaled simm7 STP 0x28800000 | (ext) | 0x01000000 (pre-idx)
+ | alloc_n * (-1) << 16 | r2 << 10 | sp(31) << 5 | r1 */
+ assert(alloc_n > 0 && alloc_n < 0x20);
+ alloc_n = (-alloc_n) & 0x3f;
+ tcg_out32(s, 0xa98003e0 | alloc_n << 16 | r2 << 10 | r1);
+}
+
+/* dealloc stack space for a total of alloc_n elements and pop r1, r2. */
+static inline void tcg_out_pop_p(TCGContext *s,
+ TCGReg r1, TCGReg r2, int alloc_n)
+{
+ /* using indexed scaled simm7 LDP 0x28c00000 | (ext) | nothing (post-idx)
+ | alloc_n << 16 | r2 << 10 | sp(31) << 5 | r1 */
+ assert(alloc_n > 0 && alloc_n < 0x20);
+ tcg_out32(s, 0xa8c003e0 | alloc_n << 16 | r2 << 10 | r1);
+}
+
+static inline void tcg_out_store_p(TCGContext *s,
+ TCGReg r1, TCGReg r2, int idx)
+{
+ /* using register pair offset simm7 STP 0x29000000 | (ext)
+ | idx << 16 | r2 << 10 | FP(29) << 5 | r1 */
+ assert(idx > 0 && idx < 0x20);
+ tcg_out32(s, 0xa90003a0 | idx << 16 | r2 << 10 | r1);
+}
+
+static inline void tcg_out_load_p(TCGContext *s, TCGReg r1, TCGReg r2, int idx)
+{
+ /* using register pair offset simm7 LDP 0x29400000 | (ext)
+ | idx << 16 | r2 << 10 | FP(29) << 5 | r1 */
+ assert(idx > 0 && idx < 0x20);
+ tcg_out32(s, 0xa94003a0 | idx << 16 | r2 << 10 | r1);
+}
+
+static void tcg_out_op(TCGContext *s, TCGOpcode opc,
+ const TCGArg *args, const int *const_args)
+{
+ int ext = 0;
+
+ switch (opc) {
+ case INDEX_op_exit_tb:
+ tcg_out_movi64(s, TCG_REG_X0, args[0]); /* load retval in X0 */
+ tcg_out_goto(s, (tcg_target_long)tb_ret_addr);
+ break;
+
+ case INDEX_op_goto_tb:
+#ifndef USE_DIRECT_JUMP
+#error "USE_DIRECT_JUMP required for aarch64"
+#endif
+ assert(s->tb_jmp_offset != NULL); /* consistency for USE_DIRECT_JUMP */
+ s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf;
+ /* actual branch destination will be patched by
+ aarch64_tb_set_jmp_target later, beware retranslation. */
+ tcg_out_goto_noaddr(s);
+ s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf;
+ break;
+
+ case INDEX_op_call:
+ if (const_args[0])
+ tcg_out_call(s, args[0]);
+ else
+ tcg_out_callr(s, args[0]);
+ break;
+
+ case INDEX_op_br:
+ tcg_out_goto_label(s, args[0]);
+ break;
+
+ case INDEX_op_ld_i32:
+ case INDEX_op_ld_i64:
+ case INDEX_op_st_i32:
+ case INDEX_op_st_i64:
+ case INDEX_op_ld8u_i32:
+ case INDEX_op_ld8s_i32:
+ case INDEX_op_ld16u_i32:
+ case INDEX_op_ld16s_i32:
+ case INDEX_op_ld8u_i64:
+ case INDEX_op_ld8s_i64:
+ case INDEX_op_ld16u_i64:
+ case INDEX_op_ld16s_i64:
+ case INDEX_op_ld32u_i64:
+ case INDEX_op_ld32s_i64:
+ case INDEX_op_st8_i32:
+ case INDEX_op_st8_i64:
+ case INDEX_op_st16_i32:
+ case INDEX_op_st16_i64:
+ case INDEX_op_st32_i64:
+ tcg_out_ldst(s, aarch64_ldst_get_data(opc), aarch64_ldst_get_type(opc),
+ args[0], args[1], args[2]);
+ break;
+
+ case INDEX_op_mov_i64: ext = 1;
+ case INDEX_op_mov_i32:
+ tcg_out_movr(s, ext, args[0], args[1]);
+ break;
+
+ case INDEX_op_movi_i64:
+ tcg_out_movi64(s, args[0], args[1]);
+ break;
+
+ case INDEX_op_movi_i32:
+ tcg_out_movi32(s, 0, args[0], args[1]);
+ break;
+
+ case INDEX_op_add_i64: ext = 1;
+ case INDEX_op_add_i32:
+ tcg_out_arith(s, ARITH_ADD, ext, args[0], args[1], args[2]);
+ break;
+
+ case INDEX_op_sub_i64: ext = 1;
+ case INDEX_op_sub_i32:
+ tcg_out_arith(s, ARITH_SUB, ext, args[0], args[1], args[2]);
+ break;
+
+ case INDEX_op_and_i64: ext = 1;
+ case INDEX_op_and_i32:
+ tcg_out_arith(s, ARITH_AND, ext, args[0], args[1], args[2]);
+ break;
+
+ case INDEX_op_or_i64: ext = 1;
+ case INDEX_op_or_i32:
+ tcg_out_arith(s, ARITH_OR, ext, args[0], args[1], args[2]);
+ break;
+
+ case INDEX_op_xor_i64: ext = 1;
+ case INDEX_op_xor_i32:
+ tcg_out_arith(s, ARITH_XOR, ext, args[0], args[1], args[2]);
+ break;
+
+ case INDEX_op_mul_i64: ext = 1;
+ case INDEX_op_mul_i32:
+ tcg_out_mul(s, ext, args[0], args[1], args[2]);
+ break;
+
+ case INDEX_op_shl_i64: ext = 1;
+ case INDEX_op_shl_i32:
+ if (const_args[2]) /* LSL / UBFM Wd, Wn, (32 - m) */
+ tcg_out_shl(s, ext, args[0], args[1], args[2]);
+ else /* LSL / LSLV */
+ tcg_out_shiftrot_reg(s, SRR_SHL, ext, args[0], args[1], args[2]);
+ break;
+
+ case INDEX_op_shr_i64: ext = 1;
+ case INDEX_op_shr_i32:
+ if (const_args[2]) /* LSR / UBFM Wd, Wn, m, 31 */
+ tcg_out_shr(s, ext, args[0], args[1], args[2]);
+ else /* LSR / LSRV */
+ tcg_out_shiftrot_reg(s, SRR_SHR, ext, args[0], args[1], args[2]);
+ break;
+
+ case INDEX_op_sar_i64: ext = 1;
+ case INDEX_op_sar_i32:
+ if (const_args[2]) /* ASR / SBFM Wd, Wn, m, 31 */
+ tcg_out_sar(s, ext, args[0], args[1], args[2]);
+ else /* ASR / ASRV */
+ tcg_out_shiftrot_reg(s, SRR_SAR, ext, args[0], args[1], args[2]);
+ break;
+
+ case INDEX_op_rotr_i64: ext = 1;
+ case INDEX_op_rotr_i32:
+ if (const_args[2]) /* ROR / EXTR Wd, Wm, Wm, m */
+ tcg_out_rotr(s, ext, args[0], args[1], args[2]); /* XXX UNTESTED */
+ else /* ROR / RORV */
+ tcg_out_shiftrot_reg(s, SRR_ROR, ext, args[0], args[1], args[2]);
+ break;
+
+ case INDEX_op_rotl_i64: ext = 1;
+ case INDEX_op_rotl_i32: /* same as rotate right by (32 - m) */
+ if (const_args[2]) /* ROR / EXTR Wd, Wm, Wm, 32 - m */
+ tcg_out_rotl(s, ext, args[0], args[1], args[2]);
+ else { /* no RSB in aarch64 unfortunately. */
+ /* XXX UNTESTED */
+ tcg_out_movi32(s, ext, TCG_REG_X8, ext ? 64 : 32);
+ tcg_out_arith(s, ARITH_SUB, ext, TCG_REG_X8, TCG_REG_X8, args[2]);
+ tcg_out_shiftrot_reg(s, SRR_ROR, ext, args[0], args[1], TCG_REG_X8);
+ }
+ break;
+
+ case INDEX_op_brcond_i64: ext = 1;
+ case INDEX_op_brcond_i32: /* CMP 0, 1, cond(2), label 3 */
+ tcg_out_cmp(s, ext, args[0], args[1]);
+ tcg_out_goto_label_cond(s, args[2], args[3]);
+ break;
+
+ case INDEX_op_setcond_i64: ext = 1;
+ case INDEX_op_setcond_i32:
+ tcg_out_movi32(s, ext, TCG_REG_X8, 0x01);
+ tcg_out_cmp(s, ext, args[1], args[2]);
+ tcg_out_csel(s, ext, args[0], TCG_REG_X8, TCG_REG_XZR,
+ tcg_cond_to_aarch64_cond[args[3]]);
+ break;
+
+ case INDEX_op_qemu_ld8u:
+ tcg_out_qemu_ld(s, args, 0 | 0);
+ break;
+ case INDEX_op_qemu_ld8s:
+ tcg_out_qemu_ld(s, args, 4 | 0);
+ break;
+ case INDEX_op_qemu_ld16u:
+ tcg_out_qemu_ld(s, args, 0 | 1);
+ break;
+ case INDEX_op_qemu_ld16s:
+ tcg_out_qemu_ld(s, args, 4 | 1);
+ break;
+ case INDEX_op_qemu_ld32u:
+ tcg_out_qemu_ld(s, args, 0 | 2);
+ break;
+ case INDEX_op_qemu_ld32s:
+ tcg_out_qemu_ld(s, args, 4 | 2);
+ break;
+ case INDEX_op_qemu_ld32:
+ tcg_out_qemu_ld(s, args, 0 | 2);
+ break;
+ case INDEX_op_qemu_ld64:
+ tcg_out_qemu_ld(s, args, 0 | 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(); /* opcode not implemented */
+ }
+}
+
+static const TCGTargetOpDef aarch64_op_defs[] = {
+ { INDEX_op_exit_tb, { } },
+ { INDEX_op_goto_tb, { } },
+ { INDEX_op_call, { "ri" } },
+ { INDEX_op_br, { } },
+
+ { INDEX_op_mov_i32, { "r", "r" } },
+ { INDEX_op_mov_i64, { "r", "r" } },
+
+ { INDEX_op_movi_i32, { "r" } },
+ { INDEX_op_movi_i64, { "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_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_i32, { "r", "r" } },
+ { INDEX_op_st16_i32, { "r", "r" } },
+ { INDEX_op_st_i32, { "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_i32, { "r", "r", "r" } },
+ { INDEX_op_add_i64, { "r", "r", "r" } },
+ { INDEX_op_sub_i32, { "r", "r", "r" } },
+ { INDEX_op_sub_i64, { "r", "r", "r" } },
+ { INDEX_op_mul_i32, { "r", "r", "r" } },
+ { INDEX_op_mul_i64, { "r", "r", "r" } },
+ { INDEX_op_and_i32, { "r", "r", "r" } },
+ { INDEX_op_and_i64, { "r", "r", "r" } },
+ { INDEX_op_or_i32, { "r", "r", "r" } },
+ { INDEX_op_or_i64, { "r", "r", "r" } },
+ { INDEX_op_xor_i32, { "r", "r", "r" } },
+ { INDEX_op_xor_i64, { "r", "r", "r" } },
+
+ { INDEX_op_shl_i32, { "r", "r", "ri" } },
+ { INDEX_op_shr_i32, { "r", "r", "ri" } },
+ { INDEX_op_sar_i32, { "r", "r", "ri" } },
+ { INDEX_op_rotl_i32, { "r", "r", "ri" } },
+ { INDEX_op_rotr_i32, { "r", "r", "ri" } },
+ { INDEX_op_shl_i64, { "r", "r", "ri" } },
+ { INDEX_op_shr_i64, { "r", "r", "ri" } },
+ { INDEX_op_sar_i64, { "r", "r", "ri" } },
+ { INDEX_op_rotl_i64, { "r", "r", "ri" } },
+ { INDEX_op_rotr_i64, { "r", "r", "ri" } },
+
+ { INDEX_op_brcond_i32, { "r", "r" } },
+ { INDEX_op_setcond_i32, { "r", "r", "r" } },
+ { INDEX_op_brcond_i64, { "r", "r" } },
+ { INDEX_op_setcond_i64, { "r", "r", "r" } },
+
+ { 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_ld32, { "r", "l" } },
+ { INDEX_op_qemu_ld64, { "r", "l" } },
+
+ { INDEX_op_qemu_st8, { "l", "l" } },
+ { INDEX_op_qemu_st16, { "l", "l" } },
+ { INDEX_op_qemu_st32, { "l", "l" } },
+ { INDEX_op_qemu_st64, { "l", "l" } },
+ { -1 },
+};
+
+static void tcg_target_init(TCGContext *s)
+{
+#if !defined(CONFIG_USER_ONLY)
+ /* fail safe */
+ if ((1ULL << CPU_TLB_ENTRY_BITS) != sizeof(CPUTLBEntry))
+ tcg_abort();
+#endif
+ tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0, 0xffff);
+ tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I64], 0, 0xffff);
+
+ tcg_regset_set32(tcg_target_call_clobber_regs, 0,
+ (1 << TCG_REG_X0) | (1 << TCG_REG_X1) |
+ (1 << TCG_REG_X2) | (1 << TCG_REG_X3) |
+ (1 << TCG_REG_X4) | (1 << TCG_REG_X5) |
+ (1 << TCG_REG_X6) | (1 << TCG_REG_X7) |
+ (1 << TCG_REG_X8) | (1 << TCG_REG_X9) |
+ (1 << TCG_REG_X10) | (1 << TCG_REG_X11) |
+ (1 << TCG_REG_X12) | (1 << TCG_REG_X13) |
+ (1 << TCG_REG_X14) | (1 << TCG_REG_X15) |
+ (1 << TCG_REG_X16) | (1 << TCG_REG_X17) |
+ (1 << TCG_REG_X18) | (1 << TCG_REG_LR));
+
+ tcg_regset_clear(s->reserved_regs);
+ tcg_regset_set_reg(s->reserved_regs, TCG_REG_SP);
+ tcg_regset_set_reg(s->reserved_regs, TCG_REG_X8);
+
+ tcg_add_target_add_op_defs(aarch64_op_defs);
+ tcg_set_frame(s, TCG_AREG0, offsetof(CPUArchState, temp_buf),
+ CPU_TEMP_BUF_NLONGS * sizeof(long));
+}
+
+static void tcg_target_qemu_prologue(TCGContext *s)
+{
+ int r;
+ int frame_size; /* number of 16 byte items */
+
+ /* we need to save (FP, LR) and X19 to X28 */
+ frame_size = (1) + (TCG_REG_X27 - TCG_REG_X19) / 2 + 1;
+
+ /* push (fp, lr) and update sp to final frame size */
+ tcg_out_push_p(s, TCG_REG_FP, TCG_REG_LR, frame_size);
+
+ /* FP -> frame chain */
+ tcg_out_movr_sp(s, 1, TCG_REG_FP, TCG_REG_SP);
+
+ /* store callee-preserved regs x19..x28 */
+ for (r = TCG_REG_X19; r <= TCG_REG_X27; r += 2) {
+ int idx; idx = (r - TCG_REG_X19) / 2 + 1;
+ tcg_out_store_p(s, r, r + 1, idx);
+ }
+
+ tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]);
+ tcg_out_gotor(s, tcg_target_call_iarg_regs[1]);
+
+ tb_ret_addr = s->code_ptr;
+
+ /* restore registers x19..x28 */
+ for (r = TCG_REG_X19; r <= TCG_REG_X27; r += 2) {
+ int idx; idx = (r - TCG_REG_X19) / 2 + 1;
+ tcg_out_load_p(s, r, r + 1, idx);
+ }
+
+ /* pop (fp, lr), restore sp to previous frame, return */
+ tcg_out_pop_p(s, TCG_REG_FP, TCG_REG_LR, frame_size);
+ tcg_out_ret(s);
+}
diff --git a/tcg/aarch64/tcg-target.h b/tcg/aarch64/tcg-target.h
new file mode 100644
index 0000000000..f28af0968e
--- /dev/null
+++ b/tcg/aarch64/tcg-target.h
@@ -0,0 +1,106 @@
+/*
+ * Initial TCG Implementation for aarch64
+ *
+ * Copyright (c) 2013 Huawei Technologies Duesseldorf GmbH
+ * Written by Claudio Fontana
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or
+ * (at your option) any later version.
+ *
+ * See the COPYING file in the top-level directory for details.
+ */
+
+#ifndef TCG_TARGET_AARCH64
+#define TCG_TARGET_AARCH64 1
+
+#undef TCG_TARGET_WORDS_BIGENDIAN
+#undef TCG_TARGET_STACK_GROWSUP
+
+typedef enum {
+ TCG_REG_X0, TCG_REG_X1, TCG_REG_X2, TCG_REG_X3, TCG_REG_X4,
+ TCG_REG_X5, TCG_REG_X6, TCG_REG_X7, TCG_REG_X8, TCG_REG_X9,
+ TCG_REG_X10, TCG_REG_X11, TCG_REG_X12, TCG_REG_X13, TCG_REG_X14,
+ TCG_REG_X15, TCG_REG_X16, TCG_REG_X17, TCG_REG_X18, TCG_REG_X19,
+ TCG_REG_X20, TCG_REG_X21, TCG_REG_X22, TCG_REG_X23, TCG_REG_X24,
+ TCG_REG_X25, TCG_REG_X26, TCG_REG_X27, TCG_REG_X28,
+ TCG_REG_FP, /* frame pointer */
+ TCG_REG_LR, /* link register */
+ TCG_REG_SP, /* stack pointer or zero register */
+ TCG_REG_XZR = TCG_REG_SP /* same register number */
+ /* program counter is not directly accessible! */
+} TCGReg;
+
+#define TCG_TARGET_NB_REGS 32
+#define TCG_CT_CONST_ARM 0x100
+
+/* used for function call generation */
+#define TCG_REG_CALL_STACK TCG_REG_SP
+#define TCG_TARGET_STACK_ALIGN 16
+#define TCG_TARGET_CALL_ALIGN_ARGS 1
+#define TCG_TARGET_CALL_STACK_OFFSET 0
+
+/* optional instructions */
+#define TCG_TARGET_HAS_div_i32 0
+#define TCG_TARGET_HAS_ext8s_i32 0
+#define TCG_TARGET_HAS_ext16s_i32 0
+#define TCG_TARGET_HAS_ext8u_i32 0
+#define TCG_TARGET_HAS_ext16u_i32 0
+#define TCG_TARGET_HAS_bswap16_i32 0
+#define TCG_TARGET_HAS_bswap32_i32 0
+#define TCG_TARGET_HAS_not_i32 0
+#define TCG_TARGET_HAS_neg_i32 0
+#define TCG_TARGET_HAS_rot_i32 1
+#define TCG_TARGET_HAS_andc_i32 0
+#define TCG_TARGET_HAS_orc_i32 0
+#define TCG_TARGET_HAS_eqv_i32 0
+#define TCG_TARGET_HAS_nand_i32 0
+#define TCG_TARGET_HAS_nor_i32 0
+#define TCG_TARGET_HAS_deposit_i32 0
+#define TCG_TARGET_HAS_movcond_i32 0
+#define TCG_TARGET_HAS_add2_i32 0
+#define TCG_TARGET_HAS_sub2_i32 0
+#define TCG_TARGET_HAS_mulu2_i32 0
+#define TCG_TARGET_HAS_muls2_i32 0
+
+#define TCG_TARGET_HAS_div_i64 0
+#define TCG_TARGET_HAS_ext8s_i64 0
+#define TCG_TARGET_HAS_ext16s_i64 0
+#define TCG_TARGET_HAS_ext32s_i64 0
+#define TCG_TARGET_HAS_ext8u_i64 0
+#define TCG_TARGET_HAS_ext16u_i64 0
+#define TCG_TARGET_HAS_ext32u_i64 0
+#define TCG_TARGET_HAS_bswap16_i64 0
+#define TCG_TARGET_HAS_bswap32_i64 0
+#define TCG_TARGET_HAS_bswap64_i64 0
+#define TCG_TARGET_HAS_not_i64 0
+#define TCG_TARGET_HAS_neg_i64 0
+#define TCG_TARGET_HAS_rot_i64 1
+#define TCG_TARGET_HAS_andc_i64 0
+#define TCG_TARGET_HAS_orc_i64 0
+#define TCG_TARGET_HAS_eqv_i64 0
+#define TCG_TARGET_HAS_nand_i64 0
+#define TCG_TARGET_HAS_nor_i64 0
+#define TCG_TARGET_HAS_deposit_i64 0
+#define TCG_TARGET_HAS_movcond_i64 0
+#define TCG_TARGET_HAS_add2_i64 0
+#define TCG_TARGET_HAS_sub2_i64 0
+#define TCG_TARGET_HAS_mulu2_i64 0
+#define TCG_TARGET_HAS_muls2_i64 0
+
+enum {
+ TCG_AREG0 = TCG_REG_X19,
+};
+
+static inline void flush_icache_range(tcg_target_ulong start,
+ tcg_target_ulong stop)
+{
+#if QEMU_GNUC_PREREQ(4, 1)
+ __builtin___clear_cache((char *)start, (char *)stop);
+#else
+ /* XXX should provide alternative with IC <ic_op>, Xt */
+#error "need GNUC >= 4.1, alternative not implemented yet."
+#endif
+
+}
+
+#endif /* TCG_TARGET_AARCH64 */