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Diffstat (limited to 'tcg/i386/tcg-target.c')
-rw-r--r--tcg/i386/tcg-target.c141
1 files changed, 70 insertions, 71 deletions
diff --git a/tcg/i386/tcg-target.c b/tcg/i386/tcg-target.c
index 12a7ca3440..c1f07415ab 100644
--- a/tcg/i386/tcg-target.c
+++ b/tcg/i386/tcg-target.c
@@ -112,7 +112,7 @@ static bool have_cmov;
static uint8_t *tb_ret_addr;
static void patch_reloc(uint8_t *code_ptr, int type,
- tcg_target_long value, tcg_target_long addend)
+ intptr_t value, intptr_t addend)
{
value += addend;
switch(type) {
@@ -430,8 +430,7 @@ static void tcg_out_modrm(TCGContext *s, int opc, int r, int rm)
that will follow the instruction. */
static void tcg_out_modrm_sib_offset(TCGContext *s, int opc, int r, int rm,
- int index, int shift,
- tcg_target_long offset)
+ int index, int shift, intptr_t offset)
{
int mod, len;
@@ -439,8 +438,8 @@ static void tcg_out_modrm_sib_offset(TCGContext *s, int opc, int r, int rm,
if (TCG_TARGET_REG_BITS == 64) {
/* Try for a rip-relative addressing mode. This has replaced
the 32-bit-mode absolute addressing encoding. */
- tcg_target_long pc = (tcg_target_long)s->code_ptr + 5 + ~rm;
- tcg_target_long disp = offset - pc;
+ intptr_t pc = (intptr_t)s->code_ptr + 5 + ~rm;
+ intptr_t disp = offset - pc;
if (disp == (int32_t)disp) {
tcg_out_opc(s, opc, r, 0, 0);
tcg_out8(s, (LOWREGMASK(r) << 3) | 5);
@@ -514,7 +513,7 @@ static void tcg_out_modrm_sib_offset(TCGContext *s, int opc, int r, int rm,
/* A simplification of the above with no index or shift. */
static inline void tcg_out_modrm_offset(TCGContext *s, int opc, int r,
- int rm, tcg_target_long offset)
+ int rm, intptr_t offset)
{
tcg_out_modrm_sib_offset(s, opc, r, rm, -1, 0, offset);
}
@@ -559,7 +558,7 @@ static void tcg_out_movi(TCGContext *s, TCGType type,
}
/* Try a 7 byte pc-relative lea before the 10 byte movq. */
- diff = arg - ((tcg_target_long)s->code_ptr + 7);
+ diff = arg - ((uintptr_t)s->code_ptr + 7);
if (diff == (int32_t)diff) {
tcg_out_opc(s, OPC_LEA | P_REXW, ret, 0, 0);
tcg_out8(s, (LOWREGMASK(ret) << 3) | 5);
@@ -595,14 +594,14 @@ static inline void tcg_out_pop(TCGContext *s, int reg)
}
static inline void tcg_out_ld(TCGContext *s, TCGType type, TCGReg ret,
- TCGReg arg1, tcg_target_long arg2)
+ TCGReg arg1, intptr_t arg2)
{
int opc = OPC_MOVL_GvEv + (type == TCG_TYPE_I64 ? P_REXW : 0);
tcg_out_modrm_offset(s, opc, ret, arg1, arg2);
}
static inline void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg,
- TCGReg arg1, tcg_target_long arg2)
+ TCGReg arg1, intptr_t arg2)
{
int opc = OPC_MOVL_EvGv + (type == TCG_TYPE_I64 ? P_REXW : 0);
tcg_out_modrm_offset(s, opc, arg, arg1, arg2);
@@ -757,7 +756,7 @@ static void tcg_out_jxx(TCGContext *s, int opc, int label_index, int small)
TCGLabel *l = &s->labels[label_index];
if (l->has_value) {
- val = l->u.value - (tcg_target_long)s->code_ptr;
+ val = l->u.value - (intptr_t)s->code_ptr;
val1 = val - 2;
if ((int8_t)val1 == val1) {
if (opc == -1) {
@@ -997,9 +996,9 @@ static void tcg_out_movcond64(TCGContext *s, TCGCond cond, TCGArg dest,
}
#endif
-static void tcg_out_branch(TCGContext *s, int call, tcg_target_long dest)
+static void tcg_out_branch(TCGContext *s, int call, uintptr_t dest)
{
- tcg_target_long disp = dest - (tcg_target_long)s->code_ptr - 5;
+ intptr_t disp = dest - (intptr_t)s->code_ptr - 5;
if (disp == (int32_t)disp) {
tcg_out_opc(s, call ? OPC_CALL_Jz : OPC_JMP_long, 0, 0, 0);
@@ -1011,27 +1010,24 @@ static void tcg_out_branch(TCGContext *s, int call, tcg_target_long dest)
}
}
-static inline void tcg_out_calli(TCGContext *s, tcg_target_long dest)
+static inline void tcg_out_calli(TCGContext *s, uintptr_t dest)
{
tcg_out_branch(s, 1, dest);
}
-static void tcg_out_jmp(TCGContext *s, tcg_target_long dest)
+static void tcg_out_jmp(TCGContext *s, uintptr_t dest)
{
tcg_out_branch(s, 0, dest);
}
#if defined(CONFIG_SOFTMMU)
-
-#include "exec/softmmu_defs.h"
-
/* helper signature: helper_ret_ld_mmu(CPUState *env, target_ulong addr,
* int mmu_idx, uintptr_t ra)
*/
static const void * const qemu_ld_helpers[4] = {
- helper_ret_ldb_mmu,
- helper_ret_ldw_mmu,
- helper_ret_ldl_mmu,
+ helper_ret_ldub_mmu,
+ helper_ret_lduw_mmu,
+ helper_ret_ldul_mmu,
helper_ret_ldq_mmu,
};
@@ -1086,33 +1082,46 @@ static inline void tcg_out_tlb_load(TCGContext *s, int addrlo_idx,
const int addrlo = args[addrlo_idx];
const int r0 = TCG_REG_L0;
const int r1 = TCG_REG_L1;
- TCGType type = TCG_TYPE_I32;
- int rexw = 0;
+ TCGType ttype = TCG_TYPE_I32;
+ TCGType htype = TCG_TYPE_I32;
+ int trexw = 0, hrexw = 0;
- if (TCG_TARGET_REG_BITS == 64 && TARGET_LONG_BITS == 64) {
- type = TCG_TYPE_I64;
- rexw = P_REXW;
+ if (TCG_TARGET_REG_BITS == 64) {
+ if (TARGET_LONG_BITS == 64) {
+ ttype = TCG_TYPE_I64;
+ trexw = P_REXW;
+ }
+ if (TCG_TYPE_PTR == TCG_TYPE_I64) {
+ htype = TCG_TYPE_I64;
+ hrexw = P_REXW;
+ }
}
- tcg_out_mov(s, type, r0, addrlo);
- tcg_out_mov(s, type, r1, addrlo);
+ tcg_out_mov(s, htype, r0, addrlo);
+ tcg_out_mov(s, ttype, r1, addrlo);
- tcg_out_shifti(s, SHIFT_SHR + rexw, r0,
+ tcg_out_shifti(s, SHIFT_SHR + hrexw, r0,
TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS);
- tgen_arithi(s, ARITH_AND + rexw, r1,
+ tgen_arithi(s, ARITH_AND + trexw, r1,
TARGET_PAGE_MASK | ((1 << s_bits) - 1), 0);
- tgen_arithi(s, ARITH_AND + rexw, r0,
+ tgen_arithi(s, ARITH_AND + hrexw, r0,
(CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS, 0);
- tcg_out_modrm_sib_offset(s, OPC_LEA + P_REXW, r0, TCG_AREG0, r0, 0,
+ tcg_out_modrm_sib_offset(s, OPC_LEA + hrexw, r0, TCG_AREG0, r0, 0,
offsetof(CPUArchState, tlb_table[mem_index][0])
+ which);
/* cmp 0(r0), r1 */
- tcg_out_modrm_offset(s, OPC_CMP_GvEv + rexw, r1, r0, 0);
+ tcg_out_modrm_offset(s, OPC_CMP_GvEv + trexw, r1, r0, 0);
- tcg_out_mov(s, type, r1, addrlo);
+ /* Prepare for both the fast path add of the tlb addend, and the slow
+ path function argument setup. There are two cases worth note:
+ For 32-bit guest and x86_64 host, MOVL zero-extends the guest address
+ before the fastpath ADDQ below. For 64-bit guest and x32 host, MOVQ
+ copies the entire guest address for the slow path, while truncation
+ for the 32-bit host happens with the fastpath ADDL below. */
+ tcg_out_mov(s, ttype, r1, addrlo);
/* jne slow_path */
tcg_out_opc(s, OPC_JCC_long + JCC_JNE, 0, 0, 0);
@@ -1132,7 +1141,7 @@ static inline void tcg_out_tlb_load(TCGContext *s, int addrlo_idx,
/* TLB Hit. */
/* add addend(r0), r1 */
- tcg_out_modrm_offset(s, OPC_ADD_GvEv + P_REXW, r1, r0,
+ tcg_out_modrm_offset(s, OPC_ADD_GvEv + hrexw, r1, r0,
offsetof(CPUTLBEntry, addend) - which);
}
#elif defined(__x86_64__) && defined(__linux__)
@@ -1154,8 +1163,7 @@ static inline void setup_guest_base_seg(void) { }
#endif /* SOFTMMU */
static void tcg_out_qemu_ld_direct(TCGContext *s, int datalo, int datahi,
- int base, tcg_target_long ofs, int seg,
- int sizeop)
+ int base, intptr_t ofs, int seg, int sizeop)
{
#ifdef TARGET_WORDS_BIGENDIAN
const int bswap = 1;
@@ -1305,7 +1313,7 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args,
}
static void tcg_out_qemu_st_direct(TCGContext *s, int datalo, int datahi,
- int base, tcg_target_long ofs, int seg,
+ int base, intptr_t ofs, int seg,
int sizeop)
{
#ifdef TARGET_WORDS_BIGENDIAN
@@ -1470,12 +1478,6 @@ static void add_qemu_ldst_label(TCGContext *s,
}
}
-/* See the GETPC definition in include/exec/exec-all.h. */
-static inline uintptr_t do_getpc(uint8_t *raddr)
-{
- return (uintptr_t)raddr - 1;
-}
-
/*
* Generate code for the slow path for a load at the end of block
*/
@@ -1509,17 +1511,17 @@ static void tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *l)
tcg_out_sti(s, TCG_TYPE_I32, TCG_REG_ESP, ofs, l->mem_index);
ofs += 4;
- tcg_out_sti(s, TCG_TYPE_I32, TCG_REG_ESP, ofs, do_getpc(l->raddr));
+ tcg_out_sti(s, TCG_TYPE_I32, TCG_REG_ESP, ofs, (uintptr_t)l->raddr);
} else {
tcg_out_mov(s, TCG_TYPE_PTR, tcg_target_call_iarg_regs[0], TCG_AREG0);
/* The second argument is already loaded with addrlo. */
tcg_out_movi(s, TCG_TYPE_I32, tcg_target_call_iarg_regs[2],
l->mem_index);
tcg_out_movi(s, TCG_TYPE_PTR, tcg_target_call_iarg_regs[3],
- do_getpc(l->raddr));
+ (uintptr_t)l->raddr);
}
- tcg_out_calli(s, (tcg_target_long)qemu_ld_helpers[s_bits]);
+ tcg_out_calli(s, (uintptr_t)qemu_ld_helpers[s_bits]);
data_reg = l->datalo_reg;
switch(opc) {
@@ -1529,20 +1531,17 @@ static void tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *l)
case 1 | 4:
tcg_out_ext16s(s, data_reg, TCG_REG_EAX, P_REXW);
break;
- case 0:
- tcg_out_ext8u(s, data_reg, TCG_REG_EAX);
- break;
- case 1:
- tcg_out_ext16u(s, data_reg, TCG_REG_EAX);
- break;
- case 2:
- tcg_out_mov(s, TCG_TYPE_I32, data_reg, TCG_REG_EAX);
- break;
#if TCG_TARGET_REG_BITS == 64
case 2 | 4:
tcg_out_ext32s(s, data_reg, TCG_REG_EAX);
break;
#endif
+ case 0:
+ case 1:
+ /* Note that the helpers have zero-extended to tcg_target_long. */
+ case 2:
+ tcg_out_mov(s, TCG_TYPE_I32, data_reg, TCG_REG_EAX);
+ break;
case 3:
if (TCG_TARGET_REG_BITS == 64) {
tcg_out_mov(s, TCG_TYPE_I64, data_reg, TCG_REG_RAX);
@@ -1560,7 +1559,7 @@ static void tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *l)
}
/* Jump to the code corresponding to next IR of qemu_st */
- tcg_out_jmp(s, (tcg_target_long)l->raddr);
+ tcg_out_jmp(s, (uintptr_t)l->raddr);
}
/*
@@ -1571,6 +1570,7 @@ static void tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *l)
int opc = l->opc;
int s_bits = opc & 3;
uint8_t **label_ptr = &l->label_ptr[0];
+ TCGReg retaddr;
/* resolve label address */
*(uint32_t *)label_ptr[0] = (uint32_t)(s->code_ptr - label_ptr[0] - 4);
@@ -1603,10 +1603,10 @@ static void tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *l)
tcg_out_sti(s, TCG_TYPE_I32, TCG_REG_ESP, ofs, l->mem_index);
ofs += 4;
- tcg_out_sti(s, TCG_TYPE_I32, TCG_REG_ESP, ofs, do_getpc(l->raddr));
+ retaddr = TCG_REG_EAX;
+ tcg_out_movi(s, TCG_TYPE_I32, retaddr, (uintptr_t)l->raddr);
+ tcg_out_st(s, TCG_TYPE_I32, retaddr, TCG_REG_ESP, ofs);
} else {
- uintptr_t pc;
-
tcg_out_mov(s, TCG_TYPE_PTR, tcg_target_call_iarg_regs[0], TCG_AREG0);
/* The second argument is already loaded with addrlo. */
tcg_out_mov(s, (opc == 3 ? TCG_TYPE_I64 : TCG_TYPE_I32),
@@ -1614,20 +1614,19 @@ static void tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *l)
tcg_out_movi(s, TCG_TYPE_I32, tcg_target_call_iarg_regs[3],
l->mem_index);
- pc = do_getpc(l->raddr);
if (ARRAY_SIZE(tcg_target_call_iarg_regs) > 4) {
- tcg_out_movi(s, TCG_TYPE_PTR, tcg_target_call_iarg_regs[4], pc);
- } else if (pc == (int32_t)pc) {
- tcg_out_sti(s, TCG_TYPE_PTR, TCG_REG_ESP, 0, pc);
+ retaddr = tcg_target_call_iarg_regs[4];
+ tcg_out_movi(s, TCG_TYPE_PTR, retaddr, (uintptr_t)l->raddr);
} else {
- tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_RAX, pc);
- tcg_out_st(s, TCG_TYPE_PTR, TCG_REG_RAX, TCG_REG_ESP, 0);
+ retaddr = TCG_REG_RAX;
+ tcg_out_movi(s, TCG_TYPE_PTR, retaddr, (uintptr_t)l->raddr);
+ tcg_out_st(s, TCG_TYPE_PTR, retaddr, TCG_REG_ESP, 0);
}
}
- tcg_out_calli(s, (tcg_target_long)qemu_st_helpers[s_bits]);
-
- tcg_out_jmp(s, (tcg_target_long)l->raddr);
+ /* "Tail call" to the helper, with the return address back inline. */
+ tcg_out_push(s, retaddr);
+ tcg_out_jmp(s, (uintptr_t)qemu_st_helpers[s_bits]);
}
/*
@@ -1668,7 +1667,7 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc,
switch(opc) {
case INDEX_op_exit_tb:
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_EAX, args[0]);
- tcg_out_jmp(s, (tcg_target_long) tb_ret_addr);
+ tcg_out_jmp(s, (uintptr_t)tb_ret_addr);
break;
case INDEX_op_goto_tb:
if (s->tb_jmp_offset) {
@@ -1679,7 +1678,7 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc,
} else {
/* indirect jump method */
tcg_out_modrm_offset(s, OPC_GRP5, EXT5_JMPN_Ev, -1,
- (tcg_target_long)(s->tb_next + args[0]));
+ (intptr_t)(s->tb_next + args[0]));
}
s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf;
break;
@@ -2372,7 +2371,7 @@ static DebugFrame debug_frame = {
#if defined(ELF_HOST_MACHINE)
void tcg_register_jit(void *buf, size_t buf_size)
{
- debug_frame.fde.func_start = (tcg_target_long) buf;
+ debug_frame.fde.func_start = (uintptr_t)buf;
debug_frame.fde.func_len = buf_size;
tcg_register_jit_int(buf, buf_size, &debug_frame, sizeof(debug_frame));
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-24 00:05:55 +0000