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tcg/i386: Use tcg_use_softmmu

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Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2023-10-01 08:13:44 -07:00
parent e2b7a40d05
commit 915e1d52e2
1 changed files with 98 additions and 100 deletions
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78
tcg/i386/tcg-target.c.inc
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@ -153,11 +153,8 @@ static TCGReg tcg_target_call_oarg_reg(TCGCallReturnKind kind, int slot)
# define ALL_VECTOR_REGS 0x00ff0000u
# define ALL_BYTEL_REGS 0x0000000fu
#endif
#ifdef CONFIG_SOFTMMU
# define SOFTMMU_RESERVE_REGS ((1 << TCG_REG_L0) | (1 << TCG_REG_L1))
#else
# define SOFTMMU_RESERVE_REGS 0
#endif
#define SOFTMMU_RESERVE_REGS \
(tcg_use_softmmu ? (1 << TCG_REG_L0) | (1 << TCG_REG_L1) : 0)
/* For 64-bit, we always know that CMOV is available. */
#if TCG_TARGET_REG_BITS == 64
@ -1933,7 +1930,7 @@ static bool tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *l)
return true;
}
#ifndef CONFIG_SOFTMMU
#ifdef CONFIG_USER_ONLY
static HostAddress x86_guest_base = {
.index = -1
};
@ -1949,6 +1946,7 @@ static inline int setup_guest_base_seg(void)
}
return 0;
}
#define setup_guest_base_seg setup_guest_base_seg
#elif defined(__x86_64__) && \
(defined (__FreeBSD__) || defined (__FreeBSD_kernel__))
# include <machine/sysarch.h>
@ -1959,13 +1957,14 @@ static inline int setup_guest_base_seg(void)
}
return 0;
}
#define setup_guest_base_seg setup_guest_base_seg
#endif
#else
static inline int setup_guest_base_seg(void)
{
return 0;
}
#endif /* setup_guest_base_seg */
#endif /* !SOFTMMU */
# define x86_guest_base (*(HostAddress *)({ qemu_build_not_reached(); NULL; }))
#endif /* CONFIG_USER_ONLY */
#ifndef setup_guest_base_seg
# define setup_guest_base_seg() 0
#endif
#define MIN_TLB_MASK_TABLE_OFS INT_MIN
@ -1984,18 +1983,18 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h,
MemOp s_bits = opc & MO_SIZE;
unsigned a_mask;
#ifdef CONFIG_SOFTMMU
if (tcg_use_softmmu) {
h->index = TCG_REG_L0;
h->ofs = 0;
h->seg = 0;
#else
} else {
*h = x86_guest_base;
#endif
}
h->base = addrlo;
h->aa = atom_and_align_for_opc(s, opc, MO_ATOM_IFALIGN, s_bits == MO_128);
a_mask = (1 << h->aa.align) - 1;
#ifdef CONFIG_SOFTMMU
if (tcg_use_softmmu) {
int cmp_ofs = is_ld ? offsetof(CPUTLBEntry, addr_read)
: offsetof(CPUTLBEntry, addr_write);
TCGType ttype = TCG_TYPE_I32;
@ -2035,9 +2034,9 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h,
fast_ofs + offsetof(CPUTLBDescFast, table));
/*
* If the required alignment is at least as large as the access, simply
* copy the address and mask. For lesser alignments, check that we don't
* cross pages for the complete access.
* If the required alignment is at least as large as the access,
* simply copy the address and mask. For lesser alignments,
* check that we don't cross pages for the complete access.
*/
if (a_mask >= s_mask) {
tcg_out_mov(s, ttype, TCG_REG_L1, addrlo);
@ -2059,7 +2058,8 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h,
if (TCG_TARGET_REG_BITS == 32 && s->addr_type == TCG_TYPE_I64) {
/* cmp 4(TCG_REG_L0), addrhi */
tcg_out_modrm_offset(s, OPC_CMP_GvEv, addrhi, TCG_REG_L0, cmp_ofs + 4);
tcg_out_modrm_offset(s, OPC_CMP_GvEv, addrhi,
TCG_REG_L0, cmp_ofs + 4);
/* jne slow_path */
tcg_out_opc(s, OPC_JCC_long + JCC_JNE, 0, 0, 0);
@ -2070,8 +2070,7 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h,
/* TLB Hit. */
tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_L0, TCG_REG_L0,
offsetof(CPUTLBEntry, addend));
#else
if (a_mask) {
} else if (a_mask) {
ldst = new_ldst_label(s);
ldst->is_ld = is_ld;
@ -2085,7 +2084,6 @@ static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h,
ldst->label_ptr[0] = s->code_ptr;
s->code_ptr += 4;
}
#endif
return ldst;
}
@ -4140,7 +4138,22 @@ static void tcg_target_qemu_prologue(TCGContext *s)
tcg_out_push(s, tcg_target_callee_save_regs[i]);
}
#if TCG_TARGET_REG_BITS == 32
if (!tcg_use_softmmu && guest_base) {
int seg = setup_guest_base_seg();
if (seg != 0) {
x86_guest_base.seg = seg;
} else if (guest_base == (int32_t)guest_base) {
x86_guest_base.ofs = guest_base;
} else {
assert(TCG_TARGET_REG_BITS == 64);
/* Choose R12 because, as a base, it requires a SIB byte. */
x86_guest_base.index = TCG_REG_R12;
tcg_out_movi(s, TCG_TYPE_PTR, x86_guest_base.index, guest_base);
tcg_regset_set_reg(s->reserved_regs, x86_guest_base.index);
}
}
if (TCG_TARGET_REG_BITS == 32) {
tcg_out_ld(s, TCG_TYPE_PTR, TCG_AREG0, TCG_REG_ESP,
(ARRAY_SIZE(tcg_target_callee_save_regs) + 1) * 4);
tcg_out_addi(s, TCG_REG_ESP, -stack_addend);
@ -4148,27 +4161,12 @@ static void tcg_target_qemu_prologue(TCGContext *s)
tcg_out_modrm_offset(s, OPC_GRP5, EXT5_JMPN_Ev, TCG_REG_ESP,
(ARRAY_SIZE(tcg_target_callee_save_regs) + 2) * 4
+ stack_addend);
#else
# if !defined(CONFIG_SOFTMMU)
if (guest_base) {
int seg = setup_guest_base_seg();
if (seg != 0) {
x86_guest_base.seg = seg;
} else if (guest_base == (int32_t)guest_base) {
x86_guest_base.ofs = guest_base;
} else {
/* Choose R12 because, as a base, it requires a SIB byte. */
x86_guest_base.index = TCG_REG_R12;
tcg_out_movi(s, TCG_TYPE_PTR, x86_guest_base.index, guest_base);
tcg_regset_set_reg(s->reserved_regs, x86_guest_base.index);
}
}
# endif
tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]);
tcg_out_addi(s, TCG_REG_ESP, -stack_addend);
/* jmp *tb. */
tcg_out_modrm(s, OPC_GRP5, EXT5_JMPN_Ev, tcg_target_call_iarg_regs[1]);
#endif
}
/*
* Return path for goto_ptr. Set return value to 0, a-la exit_tb,