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tcg-i386: Adjust tcg_out_tlb_load for x32 

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2013-08-20 16:50:38 -07:00
parent 357e3d8a29
commit d5dad3be31
1 changed files with 27 additions and 14 deletions
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41
tcg/i386/tcg-target.c
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@ -1085,33 +1085,46 @@ static inline void tcg_out_tlb_load(TCGContext *s, int addrlo_idx,
const int addrlo = args[addrlo_idx]; const int addrlo = args[addrlo_idx];
const int r0 = TCG_REG_L0; const int r0 = TCG_REG_L0;
const int r1 = TCG_REG_L1; const int r1 = TCG_REG_L1;
TCGType type = TCG_TYPE_I32; TCGType ttype = TCG_TYPE_I32;
int rexw = 0; TCGType htype = TCG_TYPE_I32;
int trexw = 0, hrexw = 0;
if (TCG_TARGET_REG_BITS == 64 && TARGET_LONG_BITS == 64) { if (TCG_TARGET_REG_BITS == 64) {
type = TCG_TYPE_I64; if (TARGET_LONG_BITS == 64) {
rexw = P_REXW; 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, htype, r0, addrlo);
tcg_out_mov(s, type, r1, 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); 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); 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); (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]) offsetof(CPUArchState, tlb_table[mem_index][0])
+ which); + which);
/* cmp 0(r0), r1 */ /* 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 */ /* jne slow_path */
tcg_out_opc(s, OPC_JCC_long + JCC_JNE, 0, 0, 0); tcg_out_opc(s, OPC_JCC_long + JCC_JNE, 0, 0, 0);
@ -1131,7 +1144,7 @@ static inline void tcg_out_tlb_load(TCGContext *s, int addrlo_idx,
/* TLB Hit. */ /* TLB Hit. */
/* add addend(r0), r1 */ /* 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); offsetof(CPUTLBEntry, addend) - which);
} }
#elif defined(__x86_64__) && defined(__linux__) #elif defined(__x86_64__) && defined(__linux__)