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68d45bb61c
qemu/tcg/ppc/tcg-target.c
Benjamin Herrenschmidt 68d45bb61c tcg/ppc: Improve unaligned load/store handling on 64-bit backend 
Currently, we get to the slow path for any unaligned access in the
backend, because we effectively preserve the bottom address bits
below the alignment requirement when comparing with the TLB entry,
so any non-0 bit there will cause the compare to fail.

For the same number of instructions, we can instead add the access
size - 1 to the address and stick to clearing all the bottom bits.

That means that normal unaligned accesses will not fallback (the HW
will handle them fine). Only when crossing a page boundary well we
end up having a mismatch because we'll end up pointing to the next
page which cannot possibly be in that same TLB entry.

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Message-Id: <1437455978.5809.2.camel@kernel.crashing.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-08-24 11:10:54 -07:00

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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.
*/
#include "tcg-be-ldst.h"
#if defined _CALL_DARWIN || defined __APPLE__
#define TCG_TARGET_CALL_DARWIN
#endif
#ifdef _CALL_SYSV
# define TCG_TARGET_CALL_ALIGN_ARGS 1
#endif
/* For some memory operations, we need a scratch that isn't R0. For the AIX
calling convention, we can re-use the TOC register since we'll be reloading
it at every call. Otherwise R12 will do nicely as neither a call-saved
register nor a parameter register. */
#ifdef _CALL_AIX
# define TCG_REG_TMP1 TCG_REG_R2
#else
# define TCG_REG_TMP1 TCG_REG_R12
#endif
/* For the 64-bit target, we don't like the 5 insn sequence needed to build
full 64-bit addresses. Better to have a base register to which we can
apply a 32-bit displacement.
There are generally three items of interest:
(1) helper functions in the main executable,
(2) TranslationBlock data structures,
(3) the return address in the epilogue.
For user-only, we USE_STATIC_CODE_GEN_BUFFER, so the code_gen_buffer
will be inside the main executable, and thus near enough to make a
pointer to the epilogue be within 2GB of all helper functions.
For softmmu, we'll let the kernel choose the address of code_gen_buffer,
and odds are it'll be somewhere close to the main malloc arena, and so
a pointer to the epilogue will be within 2GB of the TranslationBlocks.
For --enable-pie, everything will be kinda near everything else,
somewhere in high memory.
Thus we choose to keep the return address in a call-saved register. */
#define TCG_REG_RA TCG_REG_R31
#define USE_REG_RA (TCG_TARGET_REG_BITS == 64)
/* Shorthand for size of a pointer. Avoid promotion to unsigned. */
#define SZP ((int)sizeof(void *))
/* Shorthand for size of a register. */
#define SZR (TCG_TARGET_REG_BITS / 8)
#define TCG_CT_CONST_S16 0x100
#define TCG_CT_CONST_U16 0x200
#define TCG_CT_CONST_S32 0x400
#define TCG_CT_CONST_U32 0x800
#define TCG_CT_CONST_ZERO 0x1000
#define TCG_CT_CONST_MONE 0x2000
static tcg_insn_unit *tb_ret_addr;
#ifndef GUEST_BASE
#define GUEST_BASE 0
#endif
#include "elf.h"
static bool have_isa_2_06;
#define HAVE_ISA_2_06 have_isa_2_06
#define HAVE_ISEL have_isa_2_06
#ifdef CONFIG_USE_GUEST_BASE
#define TCG_GUEST_BASE_REG 30
#else
#define TCG_GUEST_BASE_REG 0
#endif
#ifndef NDEBUG
static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
"r0",
"r1",
"r2",
"r3",
"r4",
"r5",
"r6",
"r7",
"r8",
"r9",
"r10",
"r11",
"r12",
"r13",
"r14",
"r15",
"r16",
"r17",
"r18",
"r19",
"r20",
"r21",
"r22",
"r23",
"r24",
"r25",
"r26",
"r27",
"r28",
"r29",
"r30",
"r31"
};
#endif
static const int tcg_target_reg_alloc_order[] = {
TCG_REG_R14, /* call saved registers */
TCG_REG_R15,
TCG_REG_R16,
TCG_REG_R17,
TCG_REG_R18,
TCG_REG_R19,
TCG_REG_R20,
TCG_REG_R21,
TCG_REG_R22,
TCG_REG_R23,
TCG_REG_R24,
TCG_REG_R25,
TCG_REG_R26,
TCG_REG_R27,
TCG_REG_R28,
TCG_REG_R29,
TCG_REG_R30,
TCG_REG_R31,
TCG_REG_R12, /* call clobbered, non-arguments */
TCG_REG_R11,
TCG_REG_R2,
TCG_REG_R13,
TCG_REG_R10, /* call clobbered, arguments */
TCG_REG_R9,
TCG_REG_R8,
TCG_REG_R7,
TCG_REG_R6,
TCG_REG_R5,
TCG_REG_R4,
TCG_REG_R3,
};
static const int tcg_target_call_iarg_regs[] = {
TCG_REG_R3,
TCG_REG_R4,
TCG_REG_R5,
TCG_REG_R6,
TCG_REG_R7,
TCG_REG_R8,
TCG_REG_R9,
TCG_REG_R10
};
static const int tcg_target_call_oarg_regs[] = {
TCG_REG_R3,
TCG_REG_R4
};
static const int tcg_target_callee_save_regs[] = {
#ifdef TCG_TARGET_CALL_DARWIN
TCG_REG_R11,
#endif
TCG_REG_R14,
TCG_REG_R15,
TCG_REG_R16,
TCG_REG_R17,
TCG_REG_R18,
TCG_REG_R19,
TCG_REG_R20,
TCG_REG_R21,
TCG_REG_R22,
TCG_REG_R23,
TCG_REG_R24,
TCG_REG_R25,
TCG_REG_R26,
TCG_REG_R27, /* currently used for the global env */
TCG_REG_R28,
TCG_REG_R29,
TCG_REG_R30,
TCG_REG_R31
};
static inline bool in_range_b(tcg_target_long target)
{
return target == sextract64(target, 0, 26);
}
static uint32_t reloc_pc24_val(tcg_insn_unit *pc, tcg_insn_unit *target)
{
ptrdiff_t disp = tcg_ptr_byte_diff(target, pc);
assert(in_range_b(disp));
return disp & 0x3fffffc;
}
static void reloc_pc24(tcg_insn_unit *pc, tcg_insn_unit *target)
{
*pc = (*pc & ~0x3fffffc) | reloc_pc24_val(pc, target);
}
static uint16_t reloc_pc14_val(tcg_insn_unit *pc, tcg_insn_unit *target)
{
ptrdiff_t disp = tcg_ptr_byte_diff(target, pc);
assert(disp == (int16_t) disp);
return disp & 0xfffc;
}
static void reloc_pc14(tcg_insn_unit *pc, tcg_insn_unit *target)
{
*pc = (*pc & ~0xfffc) | reloc_pc14_val(pc, target);
}
static inline void tcg_out_b_noaddr(TCGContext *s, int insn)
{
unsigned retrans = *s->code_ptr & 0x3fffffc;
tcg_out32(s, insn | retrans);
}
static inline void tcg_out_bc_noaddr(TCGContext *s, int insn)
{
unsigned retrans = *s->code_ptr & 0xfffc;
tcg_out32(s, insn | retrans);
}
static void patch_reloc(tcg_insn_unit *code_ptr, int type,
intptr_t value, intptr_t addend)
{
tcg_insn_unit *target = (tcg_insn_unit *)value;
assert(addend == 0);
switch (type) {
case R_PPC_REL14:
reloc_pc14(code_ptr, target);
break;
case R_PPC_REL24:
reloc_pc24(code_ptr, target);
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 'A': case 'B': case 'C': case 'D':
ct->ct |= TCG_CT_REG;
tcg_regset_set_reg(ct->u.regs, 3 + ct_str[0] - 'A');
break;
case 'r':
ct->ct |= TCG_CT_REG;
tcg_regset_set32(ct->u.regs, 0, 0xffffffff);
break;
case 'L': /* qemu_ld constraint */
ct->ct |= TCG_CT_REG;
tcg_regset_set32(ct->u.regs, 0, 0xffffffff);
tcg_regset_reset_reg(ct->u.regs, TCG_REG_R3);
#ifdef CONFIG_SOFTMMU
tcg_regset_reset_reg(ct->u.regs, TCG_REG_R4);
tcg_regset_reset_reg(ct->u.regs, TCG_REG_R5);
#endif
break;
case 'S': /* qemu_st constraint */
ct->ct |= TCG_CT_REG;
tcg_regset_set32(ct->u.regs, 0, 0xffffffff);
tcg_regset_reset_reg(ct->u.regs, TCG_REG_R3);
#ifdef CONFIG_SOFTMMU
tcg_regset_reset_reg(ct->u.regs, TCG_REG_R4);
tcg_regset_reset_reg(ct->u.regs, TCG_REG_R5);
tcg_regset_reset_reg(ct->u.regs, TCG_REG_R6);
#endif
break;
case 'I':
ct->ct |= TCG_CT_CONST_S16;
break;
case 'J':
ct->ct |= TCG_CT_CONST_U16;
break;
case 'M':
ct->ct |= TCG_CT_CONST_MONE;
break;
case 'T':
ct->ct |= TCG_CT_CONST_S32;
break;
case 'U':
ct->ct |= TCG_CT_CONST_U32;
break;
case 'Z':
ct->ct |= TCG_CT_CONST_ZERO;
break;
default:
return -1;
}
ct_str++;
*pct_str = ct_str;
return 0;
}
/* test if a constant matches the constraint */
static int tcg_target_const_match(tcg_target_long val, TCGType type,
const TCGArgConstraint *arg_ct)
{
int ct = arg_ct->ct;
if (ct & TCG_CT_CONST) {
return 1;
}
/* The only 32-bit constraint we use aside from
TCG_CT_CONST is TCG_CT_CONST_S16. */
if (type == TCG_TYPE_I32) {
val = (int32_t)val;
}
if ((ct & TCG_CT_CONST_S16) && val == (int16_t)val) {
return 1;
} else if ((ct & TCG_CT_CONST_U16) && val == (uint16_t)val) {
return 1;
} else if ((ct & TCG_CT_CONST_S32) && val == (int32_t)val) {
return 1;
} else if ((ct & TCG_CT_CONST_U32) && val == (uint32_t)val) {
return 1;
} else if ((ct & TCG_CT_CONST_ZERO) && val == 0) {
return 1;
} else if ((ct & TCG_CT_CONST_MONE) && val == -1) {
return 1;
}
return 0;
}
#define OPCD(opc) ((opc)<<26)
#define XO19(opc) (OPCD(19)|((opc)<<1))
#define MD30(opc) (OPCD(30)|((opc)<<2))
#define MDS30(opc) (OPCD(30)|((opc)<<1))
#define XO31(opc) (OPCD(31)|((opc)<<1))
#define XO58(opc) (OPCD(58)|(opc))
#define XO62(opc) (OPCD(62)|(opc))
#define B OPCD( 18)
#define BC OPCD( 16)
#define LBZ OPCD( 34)
#define LHZ OPCD( 40)
#define LHA OPCD( 42)
#define LWZ OPCD( 32)
#define STB OPCD( 38)
#define STH OPCD( 44)
#define STW OPCD( 36)
#define STD XO62( 0)
#define STDU XO62( 1)
#define STDX XO31(149)
#define LD XO58( 0)
#define LDX XO31( 21)
#define LDU XO58( 1)
#define LWA XO58( 2)
#define LWAX XO31(341)
#define ADDIC OPCD( 12)
#define ADDI OPCD( 14)
#define ADDIS OPCD( 15)
#define ORI OPCD( 24)
#define ORIS OPCD( 25)
#define XORI OPCD( 26)
#define XORIS OPCD( 27)
#define ANDI OPCD( 28)
#define ANDIS OPCD( 29)
#define MULLI OPCD( 7)
#define CMPLI OPCD( 10)
#define CMPI OPCD( 11)
#define SUBFIC OPCD( 8)
#define LWZU OPCD( 33)
#define STWU OPCD( 37)
#define RLWIMI OPCD( 20)
#define RLWINM OPCD( 21)
#define RLWNM OPCD( 23)
#define RLDICL MD30( 0)
#define RLDICR MD30( 1)
#define RLDIMI MD30( 3)
#define RLDCL MDS30( 8)
#define BCLR XO19( 16)
#define BCCTR XO19(528)
#define CRAND XO19(257)
#define CRANDC XO19(129)
#define CRNAND XO19(225)
#define CROR XO19(449)
#define CRNOR XO19( 33)
#define EXTSB XO31(954)
#define EXTSH XO31(922)
#define EXTSW XO31(986)
#define ADD XO31(266)
#define ADDE XO31(138)
#define ADDME XO31(234)
#define ADDZE XO31(202)
#define ADDC XO31( 10)
#define AND XO31( 28)
#define SUBF XO31( 40)
#define SUBFC XO31( 8)
#define SUBFE XO31(136)
#define SUBFME XO31(232)
#define SUBFZE XO31(200)
#define OR XO31(444)
#define XOR XO31(316)
#define MULLW XO31(235)
#define MULHW XO31( 75)
#define MULHWU XO31( 11)
#define DIVW XO31(491)
#define DIVWU XO31(459)
#define CMP XO31( 0)
#define CMPL XO31( 32)
#define LHBRX XO31(790)
#define LWBRX XO31(534)
#define LDBRX XO31(532)
#define STHBRX XO31(918)
#define STWBRX XO31(662)
#define STDBRX XO31(660)
#define MFSPR XO31(339)
#define MTSPR XO31(467)
#define SRAWI XO31(824)
#define NEG XO31(104)
#define MFCR XO31( 19)
#define MFOCRF (MFCR | (1u << 20))
#define NOR XO31(124)
#define CNTLZW XO31( 26)
#define CNTLZD XO31( 58)
#define ANDC XO31( 60)
#define ORC XO31(412)
#define EQV XO31(284)
#define NAND XO31(476)
#define ISEL XO31( 15)
#define MULLD XO31(233)
#define MULHD XO31( 73)
#define MULHDU XO31( 9)
#define DIVD XO31(489)
#define DIVDU XO31(457)
#define LBZX XO31( 87)
#define LHZX XO31(279)
#define LHAX XO31(343)
#define LWZX XO31( 23)
#define STBX XO31(215)
#define STHX XO31(407)
#define STWX XO31(151)
#define SPR(a, b) ((((a)<<5)|(b))<<11)
#define LR SPR(8, 0)
#define CTR SPR(9, 0)
#define SLW XO31( 24)
#define SRW XO31(536)
#define SRAW XO31(792)
#define SLD XO31( 27)
#define SRD XO31(539)
#define SRAD XO31(794)
#define SRADI XO31(413<<1)
#define TW XO31( 4)
#define TRAP (TW | TO(31))
#define NOP ORI /* ori 0,0,0 */
#define RT(r) ((r)<<21)
#define RS(r) ((r)<<21)
#define RA(r) ((r)<<16)
#define RB(r) ((r)<<11)
#define TO(t) ((t)<<21)
#define SH(s) ((s)<<11)
#define MB(b) ((b)<<6)
#define ME(e) ((e)<<1)
#define BO(o) ((o)<<21)
#define MB64(b) ((b)<<5)
#define FXM(b) (1 << (19 - (b)))
#define LK 1
#define TAB(t, a, b) (RT(t) | RA(a) | RB(b))
#define SAB(s, a, b) (RS(s) | RA(a) | RB(b))
#define TAI(s, a, i) (RT(s) | RA(a) | ((i) & 0xffff))
#define SAI(s, a, i) (RS(s) | RA(a) | ((i) & 0xffff))
#define BF(n) ((n)<<23)
#define BI(n, c) (((c)+((n)*4))<<16)
#define BT(n, c) (((c)+((n)*4))<<21)
#define BA(n, c) (((c)+((n)*4))<<16)
#define BB(n, c) (((c)+((n)*4))<<11)
#define BC_(n, c) (((c)+((n)*4))<<6)
#define BO_COND_TRUE BO(12)
#define BO_COND_FALSE BO( 4)
#define BO_ALWAYS BO(20)
enum {
CR_LT,
CR_GT,
CR_EQ,
CR_SO
};
static const uint32_t tcg_to_bc[] = {
[TCG_COND_EQ] = BC | BI(7, CR_EQ) | BO_COND_TRUE,
[TCG_COND_NE] = BC | BI(7, CR_EQ) | BO_COND_FALSE,
[TCG_COND_LT] = BC | BI(7, CR_LT) | BO_COND_TRUE,
[TCG_COND_GE] = BC | BI(7, CR_LT) | BO_COND_FALSE,
[TCG_COND_LE] = BC | BI(7, CR_GT) | BO_COND_FALSE,
[TCG_COND_GT] = BC | BI(7, CR_GT) | BO_COND_TRUE,
[TCG_COND_LTU] = BC | BI(7, CR_LT) | BO_COND_TRUE,
[TCG_COND_GEU] = BC | BI(7, CR_LT) | BO_COND_FALSE,
[TCG_COND_LEU] = BC | BI(7, CR_GT) | BO_COND_FALSE,
[TCG_COND_GTU] = BC | BI(7, CR_GT) | BO_COND_TRUE,
};
/* The low bit here is set if the RA and RB fields must be inverted. */
static const uint32_t tcg_to_isel[] = {
[TCG_COND_EQ] = ISEL | BC_(7, CR_EQ),
[TCG_COND_NE] = ISEL | BC_(7, CR_EQ) | 1,
[TCG_COND_LT] = ISEL | BC_(7, CR_LT),
[TCG_COND_GE] = ISEL | BC_(7, CR_LT) | 1,
[TCG_COND_LE] = ISEL | BC_(7, CR_GT) | 1,
[TCG_COND_GT] = ISEL | BC_(7, CR_GT),
[TCG_COND_LTU] = ISEL | BC_(7, CR_LT),
[TCG_COND_GEU] = ISEL | BC_(7, CR_LT) | 1,
[TCG_COND_LEU] = ISEL | BC_(7, CR_GT) | 1,
[TCG_COND_GTU] = ISEL | BC_(7, CR_GT),
};
static void tcg_out_mem_long(TCGContext *s, int opi, int opx, TCGReg rt,
TCGReg base, tcg_target_long offset);
static void tcg_out_mov(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg)
{
tcg_debug_assert(TCG_TARGET_REG_BITS == 64 || type == TCG_TYPE_I32);
if (ret != arg) {
tcg_out32(s, OR | SAB(arg, ret, arg));
}
}
static inline void tcg_out_rld(TCGContext *s, int op, TCGReg ra, TCGReg rs,
int sh, int mb)
{
assert(TCG_TARGET_REG_BITS == 64);
sh = SH(sh & 0x1f) | (((sh >> 5) & 1) << 1);
mb = MB64((mb >> 5) | ((mb << 1) & 0x3f));
tcg_out32(s, op | RA(ra) | RS(rs) | sh | mb);
}
static inline void tcg_out_rlw(TCGContext *s, int op, TCGReg ra, TCGReg rs,
int sh, int mb, int me)
{
tcg_out32(s, op | RA(ra) | RS(rs) | SH(sh) | MB(mb) | ME(me));
}
static inline void tcg_out_ext32u(TCGContext *s, TCGReg dst, TCGReg src)
{
tcg_out_rld(s, RLDICL, dst, src, 0, 32);
}
static inline void tcg_out_shli32(TCGContext *s, TCGReg dst, TCGReg src, int c)
{
tcg_out_rlw(s, RLWINM, dst, src, c, 0, 31 - c);
}
static inline void tcg_out_shli64(TCGContext *s, TCGReg dst, TCGReg src, int c)
{
tcg_out_rld(s, RLDICR, dst, src, c, 63 - c);
}
static inline void tcg_out_shri32(TCGContext *s, TCGReg dst, TCGReg src, int c)
{
tcg_out_rlw(s, RLWINM, dst, src, 32 - c, c, 31);
}
static inline void tcg_out_shri64(TCGContext *s, TCGReg dst, TCGReg src, int c)
{
tcg_out_rld(s, RLDICL, dst, src, 64 - c, c);
}
static void tcg_out_movi32(TCGContext *s, TCGReg ret, int32_t arg)
{
if (arg == (int16_t) arg) {
tcg_out32(s, ADDI | TAI(ret, 0, arg));
} else {
tcg_out32(s, ADDIS | TAI(ret, 0, arg >> 16));
if (arg & 0xffff) {
tcg_out32(s, ORI | SAI(ret, ret, arg));
}
}
}
static void tcg_out_movi(TCGContext *s, TCGType type, TCGReg ret,
tcg_target_long arg)
{
tcg_debug_assert(TCG_TARGET_REG_BITS == 64 || type == TCG_TYPE_I32);
if (type == TCG_TYPE_I32 || arg == (int32_t)arg) {
tcg_out_movi32(s, ret, arg);
} else if (arg == (uint32_t)arg && !(arg & 0x8000)) {
tcg_out32(s, ADDI | TAI(ret, 0, arg));
tcg_out32(s, ORIS | SAI(ret, ret, arg >> 16));
} else {
int32_t high;
if (USE_REG_RA) {
intptr_t diff = arg - (intptr_t)tb_ret_addr;
if (diff == (int32_t)diff) {
tcg_out_mem_long(s, ADDI, ADD, ret, TCG_REG_RA, diff);
return;
}
}
high = arg >> 31 >> 1;
tcg_out_movi32(s, ret, high);
if (high) {
tcg_out_shli64(s, ret, ret, 32);
}
if (arg & 0xffff0000) {
tcg_out32(s, ORIS | SAI(ret, ret, arg >> 16));
}
if (arg & 0xffff) {
tcg_out32(s, ORI | SAI(ret, ret, arg));
}
}
}
static bool mask_operand(uint32_t c, int *mb, int *me)
{
uint32_t lsb, test;
/* Accept a bit pattern like:
0....01....1
1....10....0
0..01..10..0
Keep track of the transitions. */
if (c == 0 || c == -1) {
return false;
}
test = c;
lsb = test & -test;
test += lsb;
if (test & (test - 1)) {
return false;
}
*me = clz32(lsb);
*mb = test ? clz32(test & -test) + 1 : 0;
return true;
}
static bool mask64_operand(uint64_t c, int *mb, int *me)
{
uint64_t lsb;
if (c == 0) {
return false;
}
lsb = c & -c;
/* Accept 1..10..0. */
if (c == -lsb) {
*mb = 0;
*me = clz64(lsb);
return true;
}
/* Accept 0..01..1. */
if (lsb == 1 && (c & (c + 1)) == 0) {
*mb = clz64(c + 1) + 1;
*me = 63;
return true;
}
return false;
}
static void tcg_out_andi32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c)
{
int mb, me;
if ((c & 0xffff) == c) {
tcg_out32(s, ANDI | SAI(src, dst, c));
return;
} else if ((c & 0xffff0000) == c) {
tcg_out32(s, ANDIS | SAI(src, dst, c >> 16));
return;
} else if (mask_operand(c, &mb, &me)) {
tcg_out_rlw(s, RLWINM, dst, src, 0, mb, me);
} else {
tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_R0, c);
tcg_out32(s, AND | SAB(src, dst, TCG_REG_R0));
}
}
static void tcg_out_andi64(TCGContext *s, TCGReg dst, TCGReg src, uint64_t c)
{
int mb, me;
assert(TCG_TARGET_REG_BITS == 64);
if ((c & 0xffff) == c) {
tcg_out32(s, ANDI | SAI(src, dst, c));
return;
} else if ((c & 0xffff0000) == c) {
tcg_out32(s, ANDIS | SAI(src, dst, c >> 16));
return;
} else if (mask64_operand(c, &mb, &me)) {
if (mb == 0) {
tcg_out_rld(s, RLDICR, dst, src, 0, me);
} else {
tcg_out_rld(s, RLDICL, dst, src, 0, mb);
}
} else {
tcg_out_movi(s, TCG_TYPE_I64, TCG_REG_R0, c);
tcg_out32(s, AND | SAB(src, dst, TCG_REG_R0));
}
}
static void tcg_out_zori32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c,
int op_lo, int op_hi)
{
if (c >> 16) {
tcg_out32(s, op_hi | SAI(src, dst, c >> 16));
src = dst;
}
if (c & 0xffff) {
tcg_out32(s, op_lo | SAI(src, dst, c));
src = dst;
}
}
static void tcg_out_ori32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c)
{
tcg_out_zori32(s, dst, src, c, ORI, ORIS);
}
static void tcg_out_xori32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c)
{
tcg_out_zori32(s, dst, src, c, XORI, XORIS);
}
static void tcg_out_b(TCGContext *s, int mask, tcg_insn_unit *target)
{
ptrdiff_t disp = tcg_pcrel_diff(s, target);
if (in_range_b(disp)) {
tcg_out32(s, B | (disp & 0x3fffffc) | mask);
} else {
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R0, (uintptr_t)target);
tcg_out32(s, MTSPR | RS(TCG_REG_R0) | CTR);
tcg_out32(s, BCCTR | BO_ALWAYS | mask);
}
}
static void tcg_out_mem_long(TCGContext *s, int opi, int opx, TCGReg rt,
TCGReg base, tcg_target_long offset)
{
tcg_target_long orig = offset, l0, l1, extra = 0, align = 0;
bool is_store = false;
TCGReg rs = TCG_REG_TMP1;
switch (opi) {
case LD: case LWA:
align = 3;
/* FALLTHRU */
default:
if (rt != TCG_REG_R0) {
rs = rt;
break;
}
break;
case STD:
align = 3;
/* FALLTHRU */
case STB: case STH: case STW:
is_store = true;
break;
}
/* For unaligned, or very large offsets, use the indexed form. */
if (offset & align || offset != (int32_t)offset) {
if (rs == base) {
rs = TCG_REG_R0;
}
tcg_debug_assert(!is_store || rs != rt);
tcg_out_movi(s, TCG_TYPE_PTR, rs, orig);
tcg_out32(s, opx | TAB(rt, base, rs));
return;
}
l0 = (int16_t)offset;
offset = (offset - l0) >> 16;
l1 = (int16_t)offset;
if (l1 < 0 && orig >= 0) {
extra = 0x4000;
l1 = (int16_t)(offset - 0x4000);
}
if (l1) {
tcg_out32(s, ADDIS | TAI(rs, base, l1));
base = rs;
}
if (extra) {
tcg_out32(s, ADDIS | TAI(rs, base, extra));
base = rs;
}
if (opi != ADDI || base != rt || l0 != 0) {
tcg_out32(s, opi | TAI(rt, base, l0));
}
}
static inline void tcg_out_ld(TCGContext *s, TCGType type, TCGReg ret,
TCGReg arg1, intptr_t arg2)
{
int opi, opx;
assert(TCG_TARGET_REG_BITS == 64 || type == TCG_TYPE_I32);
if (type == TCG_TYPE_I32) {
opi = LWZ, opx = LWZX;
} else {
opi = LD, opx = LDX;
}
tcg_out_mem_long(s, opi, opx, ret, arg1, arg2);
}
static inline void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg,
TCGReg arg1, intptr_t arg2)
{
int opi, opx;
assert(TCG_TARGET_REG_BITS == 64 || type == TCG_TYPE_I32);
if (type == TCG_TYPE_I32) {
opi = STW, opx = STWX;
} else {
opi = STD, opx = STDX;
}
tcg_out_mem_long(s, opi, opx, arg, arg1, arg2);
}
static void tcg_out_cmp(TCGContext *s, int cond, TCGArg arg1, TCGArg arg2,
int const_arg2, int cr, TCGType type)
{
int imm;
uint32_t op;
tcg_debug_assert(TCG_TARGET_REG_BITS == 64 || type == TCG_TYPE_I32);
/* Simplify the comparisons below wrt CMPI. */
if (type == TCG_TYPE_I32) {
arg2 = (int32_t)arg2;
}
switch (cond) {
case TCG_COND_EQ:
case TCG_COND_NE:
if (const_arg2) {
if ((int16_t) arg2 == arg2) {
op = CMPI;
imm = 1;
break;
} else if ((uint16_t) arg2 == arg2) {
op = CMPLI;
imm = 1;
break;
}
}
op = CMPL;
imm = 0;
break;
case TCG_COND_LT:
case TCG_COND_GE:
case TCG_COND_LE:
case TCG_COND_GT:
if (const_arg2) {
if ((int16_t) arg2 == arg2) {
op = CMPI;
imm = 1;
break;
}
}
op = CMP;
imm = 0;
break;
case TCG_COND_LTU:
case TCG_COND_GEU:
case TCG_COND_LEU:
case TCG_COND_GTU:
if (const_arg2) {
if ((uint16_t) arg2 == arg2) {
op = CMPLI;
imm = 1;
break;
}
}
op = CMPL;
imm = 0;
break;
default:
tcg_abort();
}
op |= BF(cr) | ((type == TCG_TYPE_I64) << 21);
if (imm) {
tcg_out32(s, op | RA(arg1) | (arg2 & 0xffff));
} else {
if (const_arg2) {
tcg_out_movi(s, type, TCG_REG_R0, arg2);
arg2 = TCG_REG_R0;
}
tcg_out32(s, op | RA(arg1) | RB(arg2));
}
}
static void tcg_out_setcond_eq0(TCGContext *s, TCGType type,
TCGReg dst, TCGReg src)
{
if (type == TCG_TYPE_I32) {
tcg_out32(s, CNTLZW | RS(src) | RA(dst));
tcg_out_shri32(s, dst, dst, 5);
} else {
tcg_out32(s, CNTLZD | RS(src) | RA(dst));
tcg_out_shri64(s, dst, dst, 6);
}
}
static void tcg_out_setcond_ne0(TCGContext *s, TCGReg dst, TCGReg src)
{
/* X != 0 implies X + -1 generates a carry. Extra addition
trickery means: R = X-1 + ~X + C = X-1 + (-X+1) + C = C. */
if (dst != src) {
tcg_out32(s, ADDIC | TAI(dst, src, -1));
tcg_out32(s, SUBFE | TAB(dst, dst, src));
} else {
tcg_out32(s, ADDIC | TAI(TCG_REG_R0, src, -1));
tcg_out32(s, SUBFE | TAB(dst, TCG_REG_R0, src));
}
}
static TCGReg tcg_gen_setcond_xor(TCGContext *s, TCGReg arg1, TCGArg arg2,
bool const_arg2)
{
if (const_arg2) {
if ((uint32_t)arg2 == arg2) {
tcg_out_xori32(s, TCG_REG_R0, arg1, arg2);
} else {
tcg_out_movi(s, TCG_TYPE_I64, TCG_REG_R0, arg2);
tcg_out32(s, XOR | SAB(arg1, TCG_REG_R0, TCG_REG_R0));
}
} else {
tcg_out32(s, XOR | SAB(arg1, TCG_REG_R0, arg2));
}
return TCG_REG_R0;
}
static void tcg_out_setcond(TCGContext *s, TCGType type, TCGCond cond,
TCGArg arg0, TCGArg arg1, TCGArg arg2,
int const_arg2)
{
int crop, sh;
assert(TCG_TARGET_REG_BITS == 64 || type == TCG_TYPE_I32);
/* Ignore high bits of a potential constant arg2. */
if (type == TCG_TYPE_I32) {
arg2 = (uint32_t)arg2;
}
/* Handle common and trivial cases before handling anything else. */
if (arg2 == 0) {
switch (cond) {
case TCG_COND_EQ:
tcg_out_setcond_eq0(s, type, arg0, arg1);
return;
case TCG_COND_NE:
if (TCG_TARGET_REG_BITS == 64 && type == TCG_TYPE_I32) {
tcg_out_ext32u(s, TCG_REG_R0, arg1);
arg1 = TCG_REG_R0;
}
tcg_out_setcond_ne0(s, arg0, arg1);
return;
case TCG_COND_GE:
tcg_out32(s, NOR | SAB(arg1, arg0, arg1));
arg1 = arg0;
/* FALLTHRU */
case TCG_COND_LT:
/* Extract the sign bit. */
if (type == TCG_TYPE_I32) {
tcg_out_shri32(s, arg0, arg1, 31);
} else {
tcg_out_shri64(s, arg0, arg1, 63);
}
return;
default:
break;
}
}
/* If we have ISEL, we can implement everything with 3 or 4 insns.
All other cases below are also at least 3 insns, so speed up the
code generator by not considering them and always using ISEL. */
if (HAVE_ISEL) {
int isel, tab;
tcg_out_cmp(s, cond, arg1, arg2, const_arg2, 7, type);
isel = tcg_to_isel[cond];
tcg_out_movi(s, type, arg0, 1);
if (isel & 1) {
/* arg0 = (bc ? 0 : 1) */
tab = TAB(arg0, 0, arg0);
isel &= ~1;
} else {
/* arg0 = (bc ? 1 : 0) */
tcg_out_movi(s, type, TCG_REG_R0, 0);
tab = TAB(arg0, arg0, TCG_REG_R0);
}
tcg_out32(s, isel | tab);
return;
}
switch (cond) {
case TCG_COND_EQ:
arg1 = tcg_gen_setcond_xor(s, arg1, arg2, const_arg2);
tcg_out_setcond_eq0(s, type, arg0, arg1);
return;
case TCG_COND_NE:
arg1 = tcg_gen_setcond_xor(s, arg1, arg2, const_arg2);
/* Discard the high bits only once, rather than both inputs. */
if (TCG_TARGET_REG_BITS == 64 && type == TCG_TYPE_I32) {
tcg_out_ext32u(s, TCG_REG_R0, arg1);
arg1 = TCG_REG_R0;
}
tcg_out_setcond_ne0(s, arg0, arg1);
return;
case TCG_COND_GT:
case TCG_COND_GTU:
sh = 30;
crop = 0;
goto crtest;
case TCG_COND_LT:
case TCG_COND_LTU:
sh = 29;
crop = 0;
goto crtest;
case TCG_COND_GE:
case TCG_COND_GEU:
sh = 31;
crop = CRNOR | BT(7, CR_EQ) | BA(7, CR_LT) | BB(7, CR_LT);
goto crtest;
case TCG_COND_LE:
case TCG_COND_LEU:
sh = 31;
crop = CRNOR | BT(7, CR_EQ) | BA(7, CR_GT) | BB(7, CR_GT);
crtest:
tcg_out_cmp(s, cond, arg1, arg2, const_arg2, 7, type);
if (crop) {
tcg_out32(s, crop);
}
tcg_out32(s, MFOCRF | RT(TCG_REG_R0) | FXM(7));
tcg_out_rlw(s, RLWINM, arg0, TCG_REG_R0, sh, 31, 31);
break;
default:
tcg_abort();
}
}
static void tcg_out_bc(TCGContext *s, int bc, TCGLabel *l)
{
if (l->has_value) {
tcg_out32(s, bc | reloc_pc14_val(s->code_ptr, l->u.value_ptr));
} else {
tcg_out_reloc(s, s->code_ptr, R_PPC_REL14, l, 0);
tcg_out_bc_noaddr(s, bc);
}
}
static void tcg_out_brcond(TCGContext *s, TCGCond cond,
TCGArg arg1, TCGArg arg2, int const_arg2,
TCGLabel *l, TCGType type)
{
tcg_out_cmp(s, cond, arg1, arg2, const_arg2, 7, type);
tcg_out_bc(s, tcg_to_bc[cond], l);
}
static void tcg_out_movcond(TCGContext *s, TCGType type, TCGCond cond,
TCGArg dest, TCGArg c1, TCGArg c2, TCGArg v1,
TCGArg v2, bool const_c2)
{
/* If for some reason both inputs are zero, don't produce bad code. */
if (v1 == 0 && v2 == 0) {
tcg_out_movi(s, type, dest, 0);
return;
}
tcg_out_cmp(s, cond, c1, c2, const_c2, 7, type);
if (HAVE_ISEL) {
int isel = tcg_to_isel[cond];
/* Swap the V operands if the operation indicates inversion. */
if (isel & 1) {
int t = v1;
v1 = v2;
v2 = t;
isel &= ~1;
}
/* V1 == 0 is handled by isel; V2 == 0 must be handled by hand. */
if (v2 == 0) {
tcg_out_movi(s, type, TCG_REG_R0, 0);
}
tcg_out32(s, isel | TAB(dest, v1, v2));
} else {
if (dest == v2) {
cond = tcg_invert_cond(cond);
v2 = v1;
} else if (dest != v1) {
if (v1 == 0) {
tcg_out_movi(s, type, dest, 0);
} else {
tcg_out_mov(s, type, dest, v1);
}
}
/* Branch forward over one insn */
tcg_out32(s, tcg_to_bc[cond] | 8);
if (v2 == 0) {
tcg_out_movi(s, type, dest, 0);
} else {
tcg_out_mov(s, type, dest, v2);
}
}
}
static void tcg_out_cmp2(TCGContext *s, const TCGArg *args,
const int *const_args)
{
static const struct { uint8_t bit1, bit2; } bits[] = {
[TCG_COND_LT ] = { CR_LT, CR_LT },
[TCG_COND_LE ] = { CR_LT, CR_GT },
[TCG_COND_GT ] = { CR_GT, CR_GT },
[TCG_COND_GE ] = { CR_GT, CR_LT },
[TCG_COND_LTU] = { CR_LT, CR_LT },
[TCG_COND_LEU] = { CR_LT, CR_GT },
[TCG_COND_GTU] = { CR_GT, CR_GT },
[TCG_COND_GEU] = { CR_GT, CR_LT },
};
TCGCond cond = args[4], cond2;
TCGArg al, ah, bl, bh;
int blconst, bhconst;
int op, bit1, bit2;
al = args[0];
ah = args[1];
bl = args[2];
bh = args[3];
blconst = const_args[2];
bhconst = const_args[3];
switch (cond) {
case TCG_COND_EQ:
op = CRAND;
goto do_equality;
case TCG_COND_NE:
op = CRNAND;
do_equality:
tcg_out_cmp(s, cond, al, bl, blconst, 6, TCG_TYPE_I32);
tcg_out_cmp(s, cond, ah, bh, bhconst, 7, TCG_TYPE_I32);
tcg_out32(s, op | BT(7, CR_EQ) | BA(6, CR_EQ) | BB(7, CR_EQ));
break;
case TCG_COND_LT:
case TCG_COND_LE:
case TCG_COND_GT:
case TCG_COND_GE:
case TCG_COND_LTU:
case TCG_COND_LEU:
case TCG_COND_GTU:
case TCG_COND_GEU:
bit1 = bits[cond].bit1;
bit2 = bits[cond].bit2;
op = (bit1 != bit2 ? CRANDC : CRAND);
cond2 = tcg_unsigned_cond(cond);
tcg_out_cmp(s, cond, ah, bh, bhconst, 6, TCG_TYPE_I32);
tcg_out_cmp(s, cond2, al, bl, blconst, 7, TCG_TYPE_I32);
tcg_out32(s, op | BT(7, CR_EQ) | BA(6, CR_EQ) | BB(7, bit2));
tcg_out32(s, CROR | BT(7, CR_EQ) | BA(6, bit1) | BB(7, CR_EQ));
break;
default:
tcg_abort();
}
}
static void tcg_out_setcond2(TCGContext *s, const TCGArg *args,
const int *const_args)
{
tcg_out_cmp2(s, args + 1, const_args + 1);
tcg_out32(s, MFOCRF | RT(TCG_REG_R0) | FXM(7));
tcg_out_rlw(s, RLWINM, args[0], TCG_REG_R0, 31, 31, 31);
}
static void tcg_out_brcond2 (TCGContext *s, const TCGArg *args,
const int *const_args)
{
tcg_out_cmp2(s, args, const_args);
tcg_out_bc(s, BC | BI(7, CR_EQ) | BO_COND_TRUE, arg_label(args[5]));
}
void ppc_tb_set_jmp_target(uintptr_t jmp_addr, uintptr_t addr)
{
TCGContext s;
s.code_buf = s.code_ptr = (tcg_insn_unit *)jmp_addr;
tcg_out_b(&s, 0, (tcg_insn_unit *)addr);
flush_icache_range(jmp_addr, jmp_addr + tcg_current_code_size(&s));
}
static void tcg_out_call(TCGContext *s, tcg_insn_unit *target)
{
#ifdef _CALL_AIX
/* Look through the descriptor. If the branch is in range, and we
don't have to spend too much effort on building the toc. */
void *tgt = ((void **)target)[0];
uintptr_t toc = ((uintptr_t *)target)[1];
intptr_t diff = tcg_pcrel_diff(s, tgt);
if (in_range_b(diff) && toc == (uint32_t)toc) {
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_TMP1, toc);
tcg_out_b(s, LK, tgt);
} else {
/* Fold the low bits of the constant into the addresses below. */
intptr_t arg = (intptr_t)target;
int ofs = (int16_t)arg;
if (ofs + 8 < 0x8000) {
arg -= ofs;
} else {
ofs = 0;
}
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_TMP1, arg);
tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_R0, TCG_REG_TMP1, ofs);
tcg_out32(s, MTSPR | RA(TCG_REG_R0) | CTR);
tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_R2, TCG_REG_TMP1, ofs + SZP);
tcg_out32(s, BCCTR | BO_ALWAYS | LK);
}
#elif defined(_CALL_ELF) && _CALL_ELF == 2
intptr_t diff;
/* In the ELFv2 ABI, we have to set up r12 to contain the destination
address, which the callee uses to compute its TOC address. */
/* FIXME: when the branch is in range, we could avoid r12 load if we
knew that the destination uses the same TOC, and what its local
entry point offset is. */
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R12, (intptr_t)target);
diff = tcg_pcrel_diff(s, target);
if (in_range_b(diff)) {
tcg_out_b(s, LK, target);
} else {
tcg_out32(s, MTSPR | RS(TCG_REG_R12) | CTR);
tcg_out32(s, BCCTR | BO_ALWAYS | LK);
}
#else
tcg_out_b(s, LK, target);
#endif
}
static const uint32_t qemu_ldx_opc[16] = {
[MO_UB] = LBZX,
[MO_UW] = LHZX,
[MO_UL] = LWZX,
[MO_Q] = LDX,
[MO_SW] = LHAX,
[MO_SL] = LWAX,
[MO_BSWAP | MO_UB] = LBZX,
[MO_BSWAP | MO_UW] = LHBRX,
[MO_BSWAP | MO_UL] = LWBRX,
[MO_BSWAP | MO_Q] = LDBRX,
};
static const uint32_t qemu_stx_opc[16] = {
[MO_UB] = STBX,
[MO_UW] = STHX,
[MO_UL] = STWX,
[MO_Q] = STDX,
[MO_BSWAP | MO_UB] = STBX,
[MO_BSWAP | MO_UW] = STHBRX,
[MO_BSWAP | MO_UL] = STWBRX,
[MO_BSWAP | MO_Q] = STDBRX,
};
static const uint32_t qemu_exts_opc[4] = {
EXTSB, EXTSH, EXTSW, 0
};
#if defined (CONFIG_SOFTMMU)
/* helper signature: helper_ld_mmu(CPUState *env, target_ulong addr,
* int mmu_idx, uintptr_t ra)
*/
static void * const qemu_ld_helpers[16] = {
[MO_UB] = helper_ret_ldub_mmu,
[MO_LEUW] = helper_le_lduw_mmu,
[MO_LEUL] = helper_le_ldul_mmu,
[MO_LEQ] = helper_le_ldq_mmu,
[MO_BEUW] = helper_be_lduw_mmu,
[MO_BEUL] = helper_be_ldul_mmu,
[MO_BEQ] = helper_be_ldq_mmu,
};
/* helper signature: helper_st_mmu(CPUState *env, target_ulong addr,
* uintxx_t val, int mmu_idx, uintptr_t ra)
*/
static void * const qemu_st_helpers[16] = {
[MO_UB] = helper_ret_stb_mmu,
[MO_LEUW] = helper_le_stw_mmu,
[MO_LEUL] = helper_le_stl_mmu,
[MO_LEQ] = helper_le_stq_mmu,
[MO_BEUW] = helper_be_stw_mmu,
[MO_BEUL] = helper_be_stl_mmu,
[MO_BEQ] = helper_be_stq_mmu,
};
/* Perform the TLB load and compare. Places the result of the comparison
in CR7, loads the addend of the TLB into R3, and returns the register
containing the guest address (zero-extended into R4). Clobbers R0 and R2. */
static TCGReg tcg_out_tlb_read(TCGContext *s, TCGMemOp opc,
TCGReg addrlo, TCGReg addrhi,
int mem_index, bool is_read)
{
int cmp_off
= (is_read
? offsetof(CPUArchState, tlb_table[mem_index][0].addr_read)
: offsetof(CPUArchState, tlb_table[mem_index][0].addr_write));
int add_off = offsetof(CPUArchState, tlb_table[mem_index][0].addend);
TCGReg base = TCG_AREG0;
TCGMemOp s_bits = opc & MO_SIZE;
/* Extract the page index, shifted into place for tlb index. */
if (TCG_TARGET_REG_BITS == 64) {
if (TARGET_LONG_BITS == 32) {
/* Zero-extend the address into a place helpful for further use. */
tcg_out_ext32u(s, TCG_REG_R4, addrlo);
addrlo = TCG_REG_R4;
} else {
tcg_out_rld(s, RLDICL, TCG_REG_R3, addrlo,
64 - TARGET_PAGE_BITS, 64 - CPU_TLB_BITS);
}
}
/* Compensate for very large offsets. */
if (add_off >= 0x8000) {
/* Most target env are smaller than 32k; none are larger than 64k.
Simplify the logic here merely to offset by 0x7ff0, giving us a
range just shy of 64k. Check this assumption. */
QEMU_BUILD_BUG_ON(offsetof(CPUArchState,
tlb_table[NB_MMU_MODES - 1][1])
> 0x7ff0 + 0x7fff);
tcg_out32(s, ADDI | TAI(TCG_REG_TMP1, base, 0x7ff0));
base = TCG_REG_TMP1;
cmp_off -= 0x7ff0;
add_off -= 0x7ff0;
}
/* Extraction and shifting, part 2. */
if (TCG_TARGET_REG_BITS == 32 || TARGET_LONG_BITS == 32) {
tcg_out_rlw(s, RLWINM, TCG_REG_R3, addrlo,
32 - (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS),
32 - (CPU_TLB_BITS + CPU_TLB_ENTRY_BITS),
31 - CPU_TLB_ENTRY_BITS);
} else {
tcg_out_shli64(s, TCG_REG_R3, TCG_REG_R3, CPU_TLB_ENTRY_BITS);
}
tcg_out32(s, ADD | TAB(TCG_REG_R3, TCG_REG_R3, base));
/* Load the tlb comparator. */
if (TCG_TARGET_REG_BITS < TARGET_LONG_BITS) {
tcg_out_ld(s, TCG_TYPE_I32, TCG_REG_R4, TCG_REG_R3, cmp_off);
tcg_out_ld(s, TCG_TYPE_I32, TCG_REG_TMP1, TCG_REG_R3, cmp_off + 4);
} else {
tcg_out_ld(s, TCG_TYPE_TL, TCG_REG_TMP1, TCG_REG_R3, cmp_off);
}
/* Load the TLB addend for use on the fast path. Do this asap
to minimize any load use delay. */
tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_R3, TCG_REG_R3, add_off);
/* Clear the non-page, non-alignment bits from the address */
if (TCG_TARGET_REG_BITS == 32 || TARGET_LONG_BITS == 32) {
/* We don't support unaligned accesses on 32-bits, preserve
* the bottom bits and thus trigger a comparison failure on
* unaligned accesses
*/
tcg_out_rlw(s, RLWINM, TCG_REG_R0, addrlo, 0,
(32 - s_bits) & 31, 31 - TARGET_PAGE_BITS);
} else if (s_bits) {
/* > byte access, we need to handle alignment */
if ((opc & MO_AMASK) == MO_ALIGN) {
/* Alignment required by the front-end, same as 32-bits */
tcg_out_rld(s, RLDICL, TCG_REG_R0, addrlo,
64 - TARGET_PAGE_BITS, TARGET_PAGE_BITS - s_bits);
tcg_out_rld(s, RLDICL, TCG_REG_R0, TCG_REG_R0, TARGET_PAGE_BITS, 0);
} else {
/* We support unaligned accesses, we need to make sure we fail
* if we cross a page boundary. The trick is to add the
* access_size-1 to the address before masking the low bits.
* That will make the address overflow to the next page if we
* cross a page boundary which will then force a mismatch of
* the TLB compare since the next page cannot possibly be in
* the same TLB index.
*/
tcg_out32(s, ADDI | TAI(TCG_REG_R0, addrlo, (1 << s_bits) - 1));
tcg_out_rld(s, RLDICR, TCG_REG_R0, TCG_REG_R0,
0, 63 - TARGET_PAGE_BITS);
}
} else {
/* Byte access, just chop off the bits below the page index */
tcg_out_rld(s, RLDICR, TCG_REG_R0, addrlo, 0, 63 - TARGET_PAGE_BITS);
}
if (TCG_TARGET_REG_BITS < TARGET_LONG_BITS) {
tcg_out_cmp(s, TCG_COND_EQ, TCG_REG_R0, TCG_REG_TMP1,
0, 7, TCG_TYPE_I32);
tcg_out_cmp(s, TCG_COND_EQ, addrhi, TCG_REG_R4, 0, 6, TCG_TYPE_I32);
tcg_out32(s, CRAND | BT(7, CR_EQ) | BA(6, CR_EQ) | BB(7, CR_EQ));
} else {
tcg_out_cmp(s, TCG_COND_EQ, TCG_REG_R0, TCG_REG_TMP1,
0, 7, TCG_TYPE_TL);
}
return addrlo;
}
/* Record the context of a call to the out of line helper code for the slow
path for a load or store, so that we can later generate the correct
helper code. */
static void add_qemu_ldst_label(TCGContext *s, bool is_ld, TCGMemOpIdx oi,
TCGReg datalo_reg, TCGReg datahi_reg,
TCGReg addrlo_reg, TCGReg addrhi_reg,
tcg_insn_unit *raddr, tcg_insn_unit *lptr)
{
TCGLabelQemuLdst *label = new_ldst_label(s);
label->is_ld = is_ld;
label->oi = oi;
label->datalo_reg = datalo_reg;
label->datahi_reg = datahi_reg;
label->addrlo_reg = addrlo_reg;
label->addrhi_reg = addrhi_reg;
label->raddr = raddr;
label->label_ptr[0] = lptr;
}
static void tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
{
TCGMemOpIdx oi = lb->oi;
TCGMemOp opc = get_memop(oi);
TCGReg hi, lo, arg = TCG_REG_R3;
reloc_pc14(lb->label_ptr[0], s->code_ptr);
tcg_out_mov(s, TCG_TYPE_PTR, arg++, TCG_AREG0);
lo = lb->addrlo_reg;
hi = lb->addrhi_reg;
if (TCG_TARGET_REG_BITS < TARGET_LONG_BITS) {
#ifdef TCG_TARGET_CALL_ALIGN_ARGS
arg |= 1;
#endif
tcg_out_mov(s, TCG_TYPE_I32, arg++, hi);
tcg_out_mov(s, TCG_TYPE_I32, arg++, lo);
} else {
/* If the address needed to be zero-extended, we'll have already
placed it in R4. The only remaining case is 64-bit guest. */
tcg_out_mov(s, TCG_TYPE_TL, arg++, lo);
}
tcg_out_movi(s, TCG_TYPE_I32, arg++, oi);
tcg_out32(s, MFSPR | RT(arg) | LR);
tcg_out_call(s, qemu_ld_helpers[opc & (MO_BSWAP | MO_SIZE)]);
lo = lb->datalo_reg;
hi = lb->datahi_reg;
if (TCG_TARGET_REG_BITS == 32 && (opc & MO_SIZE) == MO_64) {
tcg_out_mov(s, TCG_TYPE_I32, lo, TCG_REG_R4);
tcg_out_mov(s, TCG_TYPE_I32, hi, TCG_REG_R3);
} else if (opc & MO_SIGN) {
uint32_t insn = qemu_exts_opc[opc & MO_SIZE];
tcg_out32(s, insn | RA(lo) | RS(TCG_REG_R3));
} else {
tcg_out_mov(s, TCG_TYPE_REG, lo, TCG_REG_R3);
}
tcg_out_b(s, 0, lb->raddr);
}
static void tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *lb)
{
TCGMemOpIdx oi = lb->oi;
TCGMemOp opc = get_memop(oi);
TCGMemOp s_bits = opc & MO_SIZE;
TCGReg hi, lo, arg = TCG_REG_R3;
reloc_pc14(lb->label_ptr[0], s->code_ptr);
tcg_out_mov(s, TCG_TYPE_PTR, arg++, TCG_AREG0);
lo = lb->addrlo_reg;
hi = lb->addrhi_reg;
if (TCG_TARGET_REG_BITS < TARGET_LONG_BITS) {
#ifdef TCG_TARGET_CALL_ALIGN_ARGS
arg |= 1;
#endif
tcg_out_mov(s, TCG_TYPE_I32, arg++, hi);
tcg_out_mov(s, TCG_TYPE_I32, arg++, lo);
} else {
/* If the address needed to be zero-extended, we'll have already
placed it in R4. The only remaining case is 64-bit guest. */
tcg_out_mov(s, TCG_TYPE_TL, arg++, lo);
}
lo = lb->datalo_reg;
hi = lb->datahi_reg;
if (TCG_TARGET_REG_BITS == 32) {
switch (s_bits) {
case MO_64:
#ifdef TCG_TARGET_CALL_ALIGN_ARGS
arg |= 1;
#endif
tcg_out_mov(s, TCG_TYPE_I32, arg++, hi);
/* FALLTHRU */
case MO_32:
tcg_out_mov(s, TCG_TYPE_I32, arg++, lo);
break;
default:
tcg_out_rlw(s, RLWINM, arg++, lo, 0, 32 - (8 << s_bits), 31);
break;
}
} else {
if (s_bits == MO_64) {
tcg_out_mov(s, TCG_TYPE_I64, arg++, lo);
} else {
tcg_out_rld(s, RLDICL, arg++, lo, 0, 64 - (8 << s_bits));
}
}
tcg_out_movi(s, TCG_TYPE_I32, arg++, oi);
tcg_out32(s, MFSPR | RT(arg) | LR);
tcg_out_call(s, qemu_st_helpers[opc & (MO_BSWAP | MO_SIZE)]);
tcg_out_b(s, 0, lb->raddr);
}
#endif /* SOFTMMU */
static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, bool is_64)
{
TCGReg datalo, datahi, addrlo, rbase;
TCGReg addrhi __attribute__((unused));
TCGMemOpIdx oi;
TCGMemOp opc, s_bits;
#ifdef CONFIG_SOFTMMU
int mem_index;
tcg_insn_unit *label_ptr;
#endif
datalo = *args++;
datahi = (TCG_TARGET_REG_BITS == 32 && is_64 ? *args++ : 0);
addrlo = *args++;
addrhi = (TCG_TARGET_REG_BITS < TARGET_LONG_BITS ? *args++ : 0);
oi = *args++;
opc = get_memop(oi);
s_bits = opc & MO_SIZE;
#ifdef CONFIG_SOFTMMU
mem_index = get_mmuidx(oi);
addrlo = tcg_out_tlb_read(s, opc, addrlo, addrhi, mem_index, true);
/* Load a pointer into the current opcode w/conditional branch-link. */
label_ptr = s->code_ptr;
tcg_out_bc_noaddr(s, BC | BI(7, CR_EQ) | BO_COND_FALSE | LK);
rbase = TCG_REG_R3;
#else /* !CONFIG_SOFTMMU */
rbase = GUEST_BASE ? TCG_GUEST_BASE_REG : 0;
if (TCG_TARGET_REG_BITS > TARGET_LONG_BITS) {
tcg_out_ext32u(s, TCG_REG_TMP1, addrlo);
addrlo = TCG_REG_TMP1;
}
#endif
if (TCG_TARGET_REG_BITS == 32 && s_bits == MO_64) {
if (opc & MO_BSWAP) {
tcg_out32(s, ADDI | TAI(TCG_REG_R0, addrlo, 4));
tcg_out32(s, LWBRX | TAB(datalo, rbase, addrlo));
tcg_out32(s, LWBRX | TAB(datahi, rbase, TCG_REG_R0));
} else if (rbase != 0) {
tcg_out32(s, ADDI | TAI(TCG_REG_R0, addrlo, 4));
tcg_out32(s, LWZX | TAB(datahi, rbase, addrlo));
tcg_out32(s, LWZX | TAB(datalo, rbase, TCG_REG_R0));
} else if (addrlo == datahi) {
tcg_out32(s, LWZ | TAI(datalo, addrlo, 4));
tcg_out32(s, LWZ | TAI(datahi, addrlo, 0));
} else {
tcg_out32(s, LWZ | TAI(datahi, addrlo, 0));
tcg_out32(s, LWZ | TAI(datalo, addrlo, 4));
}
} else {
uint32_t insn = qemu_ldx_opc[opc & (MO_BSWAP | MO_SSIZE)];
if (!HAVE_ISA_2_06 && insn == LDBRX) {
tcg_out32(s, ADDI | TAI(TCG_REG_R0, addrlo, 4));
tcg_out32(s, LWBRX | TAB(datalo, rbase, addrlo));
tcg_out32(s, LWBRX | TAB(TCG_REG_R0, rbase, TCG_REG_R0));
tcg_out_rld(s, RLDIMI, datalo, TCG_REG_R0, 32, 0);
} else if (insn) {
tcg_out32(s, insn | TAB(datalo, rbase, addrlo));
} else {
insn = qemu_ldx_opc[opc & (MO_SIZE | MO_BSWAP)];
tcg_out32(s, insn | TAB(datalo, rbase, addrlo));
insn = qemu_exts_opc[s_bits];
tcg_out32(s, insn | RA(datalo) | RS(datalo));
}
}
#ifdef CONFIG_SOFTMMU
add_qemu_ldst_label(s, true, oi, datalo, datahi, addrlo, addrhi,
s->code_ptr, label_ptr);
#endif
}
static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, bool is_64)
{
TCGReg datalo, datahi, addrlo, rbase;
TCGReg addrhi __attribute__((unused));
TCGMemOpIdx oi;
TCGMemOp opc, s_bits;
#ifdef CONFIG_SOFTMMU
int mem_index;
tcg_insn_unit *label_ptr;
#endif
datalo = *args++;
datahi = (TCG_TARGET_REG_BITS == 32 && is_64 ? *args++ : 0);
addrlo = *args++;
addrhi = (TCG_TARGET_REG_BITS < TARGET_LONG_BITS ? *args++ : 0);
oi = *args++;
opc = get_memop(oi);
s_bits = opc & MO_SIZE;
#ifdef CONFIG_SOFTMMU
mem_index = get_mmuidx(oi);
addrlo = tcg_out_tlb_read(s, opc, addrlo, addrhi, mem_index, false);
/* Load a pointer into the current opcode w/conditional branch-link. */
label_ptr = s->code_ptr;
tcg_out_bc_noaddr(s, BC | BI(7, CR_EQ) | BO_COND_FALSE | LK);
rbase = TCG_REG_R3;
#else /* !CONFIG_SOFTMMU */
rbase = GUEST_BASE ? TCG_GUEST_BASE_REG : 0;
if (TCG_TARGET_REG_BITS > TARGET_LONG_BITS) {
tcg_out_ext32u(s, TCG_REG_TMP1, addrlo);
addrlo = TCG_REG_TMP1;
}
#endif
if (TCG_TARGET_REG_BITS == 32 && s_bits == MO_64) {
if (opc & MO_BSWAP) {
tcg_out32(s, ADDI | TAI(TCG_REG_R0, addrlo, 4));
tcg_out32(s, STWBRX | SAB(datalo, rbase, addrlo));
tcg_out32(s, STWBRX | SAB(datahi, rbase, TCG_REG_R0));
} else if (rbase != 0) {
tcg_out32(s, ADDI | TAI(TCG_REG_R0, addrlo, 4));
tcg_out32(s, STWX | SAB(datahi, rbase, addrlo));
tcg_out32(s, STWX | SAB(datalo, rbase, TCG_REG_R0));
} else {
tcg_out32(s, STW | TAI(datahi, addrlo, 0));
tcg_out32(s, STW | TAI(datalo, addrlo, 4));
}
} else {
uint32_t insn = qemu_stx_opc[opc & (MO_BSWAP | MO_SIZE)];
if (!HAVE_ISA_2_06 && insn == STDBRX) {
tcg_out32(s, STWBRX | SAB(datalo, rbase, addrlo));
tcg_out32(s, ADDI | TAI(TCG_REG_TMP1, addrlo, 4));
tcg_out_shri64(s, TCG_REG_R0, datalo, 32);
tcg_out32(s, STWBRX | SAB(TCG_REG_R0, rbase, TCG_REG_TMP1));
} else {
tcg_out32(s, insn | SAB(datalo, rbase, addrlo));
}
}
#ifdef CONFIG_SOFTMMU
add_qemu_ldst_label(s, false, oi, datalo, datahi, addrlo, addrhi,
s->code_ptr, label_ptr);
#endif
}
/* Parameters for function call generation, used in tcg.c. */
#define TCG_TARGET_STACK_ALIGN 16
#define TCG_TARGET_EXTEND_ARGS 1
#ifdef _CALL_AIX
# define LINK_AREA_SIZE (6 * SZR)
# define LR_OFFSET (1 * SZR)
# define TCG_TARGET_CALL_STACK_OFFSET (LINK_AREA_SIZE + 8 * SZR)
#elif defined(TCG_TARGET_CALL_DARWIN)
# define LINK_AREA_SIZE (6 * SZR)
# define LR_OFFSET (2 * SZR)
#elif TCG_TARGET_REG_BITS == 64
# if defined(_CALL_ELF) && _CALL_ELF == 2
# define LINK_AREA_SIZE (4 * SZR)
# define LR_OFFSET (1 * SZR)
# endif
#else /* TCG_TARGET_REG_BITS == 32 */
# if defined(_CALL_SYSV)
# define LINK_AREA_SIZE (2 * SZR)
# define LR_OFFSET (1 * SZR)
# endif
#endif
#ifndef LR_OFFSET
# error "Unhandled abi"
#endif
#ifndef TCG_TARGET_CALL_STACK_OFFSET
# define TCG_TARGET_CALL_STACK_OFFSET LINK_AREA_SIZE
#endif
#define CPU_TEMP_BUF_SIZE (CPU_TEMP_BUF_NLONGS * (int)sizeof(long))
#define REG_SAVE_SIZE ((int)ARRAY_SIZE(tcg_target_callee_save_regs) * SZR)
#define FRAME_SIZE ((TCG_TARGET_CALL_STACK_OFFSET \
+ TCG_STATIC_CALL_ARGS_SIZE \
+ CPU_TEMP_BUF_SIZE \
+ REG_SAVE_SIZE \
+ TCG_TARGET_STACK_ALIGN - 1) \
& -TCG_TARGET_STACK_ALIGN)
#define REG_SAVE_BOT (FRAME_SIZE - REG_SAVE_SIZE)
static void tcg_target_qemu_prologue(TCGContext *s)
{
int i;
#ifdef _CALL_AIX
void **desc = (void **)s->code_ptr;
desc[0] = desc + 2; /* entry point */
desc[1] = 0; /* environment pointer */
s->code_ptr = (void *)(desc + 2); /* skip over descriptor */
#endif
tcg_set_frame(s, TCG_REG_CALL_STACK, REG_SAVE_BOT - CPU_TEMP_BUF_SIZE,
CPU_TEMP_BUF_SIZE);
/* Prologue */
tcg_out32(s, MFSPR | RT(TCG_REG_R0) | LR);
tcg_out32(s, (SZR == 8 ? STDU : STWU)
| SAI(TCG_REG_R1, TCG_REG_R1, -FRAME_SIZE));
for (i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); ++i) {
tcg_out_st(s, TCG_TYPE_REG, tcg_target_callee_save_regs[i],
TCG_REG_R1, REG_SAVE_BOT + i * SZR);
}
tcg_out_st(s, TCG_TYPE_PTR, TCG_REG_R0, TCG_REG_R1, FRAME_SIZE+LR_OFFSET);
#ifdef CONFIG_USE_GUEST_BASE
if (GUEST_BASE) {
tcg_out_movi(s, TCG_TYPE_PTR, TCG_GUEST_BASE_REG, GUEST_BASE);
tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG);
}
#endif
tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]);
tcg_out32(s, MTSPR | RS(tcg_target_call_iarg_regs[1]) | CTR);
if (USE_REG_RA) {
#ifdef _CALL_AIX
/* Make the caller load the value as the TOC into R2. */
tb_ret_addr = s->code_ptr + 2;
desc[1] = tb_ret_addr;
tcg_out_mov(s, TCG_TYPE_PTR, TCG_REG_RA, TCG_REG_R2);
tcg_out32(s, BCCTR | BO_ALWAYS);
#elif defined(_CALL_ELF) && _CALL_ELF == 2
/* Compute from the incoming R12 value. */
tb_ret_addr = s->code_ptr + 2;
tcg_out32(s, ADDI | TAI(TCG_REG_RA, TCG_REG_R12,
tcg_ptr_byte_diff(tb_ret_addr, s->code_buf)));
tcg_out32(s, BCCTR | BO_ALWAYS);
#else
/* Reserve max 5 insns for the constant load. */
tb_ret_addr = s->code_ptr + 6;
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_RA, (intptr_t)tb_ret_addr);
tcg_out32(s, BCCTR | BO_ALWAYS);
while (s->code_ptr < tb_ret_addr) {
tcg_out32(s, NOP);
}
#endif
} else {
tcg_out32(s, BCCTR | BO_ALWAYS);
tb_ret_addr = s->code_ptr;
}
/* Epilogue */
assert(tb_ret_addr == s->code_ptr);
tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_R0, TCG_REG_R1, FRAME_SIZE+LR_OFFSET);
for (i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); ++i) {
tcg_out_ld(s, TCG_TYPE_REG, tcg_target_callee_save_regs[i],
TCG_REG_R1, REG_SAVE_BOT + i * SZR);
}
tcg_out32(s, MTSPR | RS(TCG_REG_R0) | LR);
tcg_out32(s, ADDI | TAI(TCG_REG_R1, TCG_REG_R1, FRAME_SIZE));
tcg_out32(s, BCLR | BO_ALWAYS);
}
static void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args,
const int *const_args)
{
TCGArg a0, a1, a2;
int c;
switch (opc) {
case INDEX_op_exit_tb:
if (USE_REG_RA) {
ptrdiff_t disp = tcg_pcrel_diff(s, tb_ret_addr);
/* If we can use a direct branch, otherwise use the value in RA.
Note that the direct branch is always forward. If it's in
range now, it'll still be in range after the movi. Don't
bother about the 20 bytes where the test here fails but it
would succeed below. */
if (!in_range_b(disp)) {
tcg_out32(s, MTSPR | RS(TCG_REG_RA) | CTR);
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R3, args[0]);
tcg_out32(s, BCCTR | BO_ALWAYS);
break;
}
}
tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R3, args[0]);
tcg_out_b(s, 0, tb_ret_addr);
break;
case INDEX_op_goto_tb:
if (s->tb_jmp_offset) {
/* Direct jump method. */
s->tb_jmp_offset[args[0]] = tcg_current_code_size(s);
s->code_ptr += 7;
} else {
/* Indirect jump method. */
tcg_abort();
}
s->tb_next_offset[args[0]] = tcg_current_code_size(s);
break;
case INDEX_op_br:
{
TCGLabel *l = arg_label(args[0]);
if (l->has_value) {
tcg_out_b(s, 0, l->u.value_ptr);
} else {
tcg_out_reloc(s, s->code_ptr, R_PPC_REL24, l, 0);
tcg_out_b_noaddr(s, B);
}
}
break;
case INDEX_op_ld8u_i32:
case INDEX_op_ld8u_i64:
tcg_out_mem_long(s, LBZ, LBZX, args[0], args[1], args[2]);
break;
case INDEX_op_ld8s_i32:
case INDEX_op_ld8s_i64:
tcg_out_mem_long(s, LBZ, LBZX, args[0], args[1], args[2]);
tcg_out32(s, EXTSB | RS(args[0]) | RA(args[0]));
break;
case INDEX_op_ld16u_i32:
case INDEX_op_ld16u_i64:
tcg_out_mem_long(s, LHZ, LHZX, args[0], args[1], args[2]);
break;
case INDEX_op_ld16s_i32:
case INDEX_op_ld16s_i64:
tcg_out_mem_long(s, LHA, LHAX, args[0], args[1], args[2]);
break;
case INDEX_op_ld_i32:
case INDEX_op_ld32u_i64:
tcg_out_mem_long(s, LWZ, LWZX, args[0], args[1], args[2]);
break;
case INDEX_op_ld32s_i64:
tcg_out_mem_long(s, LWA, LWAX, args[0], args[1], args[2]);
break;
case INDEX_op_ld_i64:
tcg_out_mem_long(s, LD, LDX, args[0], args[1], args[2]);
break;
case INDEX_op_st8_i32:
case INDEX_op_st8_i64:
tcg_out_mem_long(s, STB, STBX, args[0], args[1], args[2]);
break;
case INDEX_op_st16_i32:
case INDEX_op_st16_i64:
tcg_out_mem_long(s, STH, STHX, args[0], args[1], args[2]);
break;
case INDEX_op_st_i32:
case INDEX_op_st32_i64:
tcg_out_mem_long(s, STW, STWX, args[0], args[1], args[2]);
break;
case INDEX_op_st_i64:
tcg_out_mem_long(s, STD, STDX, args[0], args[1], args[2]);
break;
case INDEX_op_add_i32:
a0 = args[0], a1 = args[1], a2 = args[2];
if (const_args[2]) {
do_addi_32:
tcg_out_mem_long(s, ADDI, ADD, a0, a1, (int32_t)a2);
} else {
tcg_out32(s, ADD | TAB(a0, a1, a2));
}
break;
case INDEX_op_sub_i32:
a0 = args[0], a1 = args[1], a2 = args[2];
if (const_args[1]) {
if (const_args[2]) {
tcg_out_movi(s, TCG_TYPE_I32, a0, a1 - a2);
} else {
tcg_out32(s, SUBFIC | TAI(a0, a2, a1));
}
} else if (const_args[2]) {
a2 = -a2;
goto do_addi_32;
} else {
tcg_out32(s, SUBF | TAB(a0, a2, a1));
}
break;
case INDEX_op_and_i32:
a0 = args[0], a1 = args[1], a2 = args[2];
if (const_args[2]) {
tcg_out_andi32(s, a0, a1, a2);
} else {
tcg_out32(s, AND | SAB(a1, a0, a2));
}
break;
case INDEX_op_and_i64:
a0 = args[0], a1 = args[1], a2 = args[2];
if (const_args[2]) {
tcg_out_andi64(s, a0, a1, a2);
} else {
tcg_out32(s, AND | SAB(a1, a0, a2));
}
break;
case INDEX_op_or_i64:
case INDEX_op_or_i32:
a0 = args[0], a1 = args[1], a2 = args[2];
if (const_args[2]) {
tcg_out_ori32(s, a0, a1, a2);
} else {
tcg_out32(s, OR | SAB(a1, a0, a2));
}
break;
case INDEX_op_xor_i64:
case INDEX_op_xor_i32:
a0 = args[0], a1 = args[1], a2 = args[2];
if (const_args[2]) {
tcg_out_xori32(s, a0, a1, a2);
} else {
tcg_out32(s, XOR | SAB(a1, a0, a2));
}
break;
case INDEX_op_andc_i32:
a0 = args[0], a1 = args[1], a2 = args[2];
if (const_args[2]) {
tcg_out_andi32(s, a0, a1, ~a2);
} else {
tcg_out32(s, ANDC | SAB(a1, a0, a2));
}
break;
case INDEX_op_andc_i64:
a0 = args[0], a1 = args[1], a2 = args[2];
if (const_args[2]) {
tcg_out_andi64(s, a0, a1, ~a2);
} else {
tcg_out32(s, ANDC | SAB(a1, a0, a2));
}
break;
case INDEX_op_orc_i32:
if (const_args[2]) {
tcg_out_ori32(s, args[0], args[1], ~args[2]);
break;
}
/* FALLTHRU */
case INDEX_op_orc_i64:
tcg_out32(s, ORC | SAB(args[1], args[0], args[2]));
break;
case INDEX_op_eqv_i32:
if (const_args[2]) {
tcg_out_xori32(s, args[0], args[1], ~args[2]);
break;
}
/* FALLTHRU */
case INDEX_op_eqv_i64:
tcg_out32(s, EQV | SAB(args[1], args[0], args[2]));
break;
case INDEX_op_nand_i32:
case INDEX_op_nand_i64:
tcg_out32(s, NAND | SAB(args[1], args[0], args[2]));
break;
case INDEX_op_nor_i32:
case INDEX_op_nor_i64:
tcg_out32(s, NOR | SAB(args[1], args[0], args[2]));
break;
case INDEX_op_mul_i32:
a0 = args[0], a1 = args[1], a2 = args[2];
if (const_args[2]) {
tcg_out32(s, MULLI | TAI(a0, a1, a2));
} else {
tcg_out32(s, MULLW | TAB(a0, a1, a2));
}
break;
case INDEX_op_div_i32:
tcg_out32(s, DIVW | TAB(args[0], args[1], args[2]));
break;
case INDEX_op_divu_i32:
tcg_out32(s, DIVWU | TAB(args[0], args[1], args[2]));
break;
case INDEX_op_shl_i32:
if (const_args[2]) {
tcg_out_shli32(s, args[0], args[1], args[2]);
} else {
tcg_out32(s, SLW | SAB(args[1], args[0], args[2]));
}
break;
case INDEX_op_shr_i32:
if (const_args[2]) {
tcg_out_shri32(s, args[0], args[1], args[2]);
} else {
tcg_out32(s, SRW | SAB(args[1], args[0], args[2]));
}
break;
case INDEX_op_sar_i32:
if (const_args[2]) {
tcg_out32(s, SRAWI | RS(args[1]) | RA(args[0]) | SH(args[2]));
} else {
tcg_out32(s, SRAW | SAB(args[1], args[0], args[2]));
}
break;
case INDEX_op_rotl_i32:
if (const_args[2]) {
tcg_out_rlw(s, RLWINM, args[0], args[1], args[2], 0, 31);
} else {
tcg_out32(s, RLWNM | SAB(args[1], args[0], args[2])
| MB(0) | ME(31));
}
break;
case INDEX_op_rotr_i32:
if (const_args[2]) {
tcg_out_rlw(s, RLWINM, args[0], args[1], 32 - args[2], 0, 31);
} else {
tcg_out32(s, SUBFIC | TAI(TCG_REG_R0, args[2], 32));
tcg_out32(s, RLWNM | SAB(args[1], args[0], TCG_REG_R0)
| MB(0) | ME(31));
}
break;
case INDEX_op_brcond_i32:
tcg_out_brcond(s, args[2], args[0], args[1], const_args[1],
arg_label(args[3]), TCG_TYPE_I32);
break;
case INDEX_op_brcond_i64:
tcg_out_brcond(s, args[2], args[0], args[1], const_args[1],
arg_label(args[3]), TCG_TYPE_I64);
break;
case INDEX_op_brcond2_i32:
tcg_out_brcond2(s, args, const_args);
break;
case INDEX_op_neg_i32:
case INDEX_op_neg_i64:
tcg_out32(s, NEG | RT(args[0]) | RA(args[1]));
break;
case INDEX_op_not_i32:
case INDEX_op_not_i64:
tcg_out32(s, NOR | SAB(args[1], args[0], args[1]));
break;
case INDEX_op_add_i64:
a0 = args[0], a1 = args[1], a2 = args[2];
if (const_args[2]) {
do_addi_64:
tcg_out_mem_long(s, ADDI, ADD, a0, a1, a2);
} else {
tcg_out32(s, ADD | TAB(a0, a1, a2));
}
break;
case INDEX_op_sub_i64:
a0 = args[0], a1 = args[1], a2 = args[2];
if (const_args[1]) {
if (const_args[2]) {
tcg_out_movi(s, TCG_TYPE_I64, a0, a1 - a2);
} else {
tcg_out32(s, SUBFIC | TAI(a0, a2, a1));
}
} else if (const_args[2]) {
a2 = -a2;
goto do_addi_64;
} else {
tcg_out32(s, SUBF | TAB(a0, a2, a1));
}
break;
case INDEX_op_shl_i64:
if (const_args[2]) {
tcg_out_shli64(s, args[0], args[1], args[2]);
} else {
tcg_out32(s, SLD | SAB(args[1], args[0], args[2]));
}
break;
case INDEX_op_shr_i64:
if (const_args[2]) {
tcg_out_shri64(s, args[0], args[1], args[2]);
} else {
tcg_out32(s, SRD | SAB(args[1], args[0], args[2]));
}
break;
case INDEX_op_sar_i64:
if (const_args[2]) {
int sh = SH(args[2] & 0x1f) | (((args[2] >> 5) & 1) << 1);
tcg_out32(s, SRADI | RA(args[0]) | RS(args[1]) | sh);
} else {
tcg_out32(s, SRAD | SAB(args[1], args[0], args[2]));
}
break;
case INDEX_op_rotl_i64:
if (const_args[2]) {
tcg_out_rld(s, RLDICL, args[0], args[1], args[2], 0);
} else {
tcg_out32(s, RLDCL | SAB(args[1], args[0], args[2]) | MB64(0));
}
break;
case INDEX_op_rotr_i64:
if (const_args[2]) {
tcg_out_rld(s, RLDICL, args[0], args[1], 64 - args[2], 0);
} else {
tcg_out32(s, SUBFIC | TAI(TCG_REG_R0, args[2], 64));
tcg_out32(s, RLDCL | SAB(args[1], args[0], TCG_REG_R0) | MB64(0));
}
break;
case INDEX_op_mul_i64:
a0 = args[0], a1 = args[1], a2 = args[2];
if (const_args[2]) {
tcg_out32(s, MULLI | TAI(a0, a1, a2));
} else {
tcg_out32(s, MULLD | TAB(a0, a1, a2));
}
break;
case INDEX_op_div_i64:
tcg_out32(s, DIVD | TAB(args[0], args[1], args[2]));
break;
case INDEX_op_divu_i64:
tcg_out32(s, DIVDU | TAB(args[0], args[1], args[2]));
break;
case INDEX_op_qemu_ld_i32:
tcg_out_qemu_ld(s, args, false);
break;
case INDEX_op_qemu_ld_i64:
tcg_out_qemu_ld(s, args, true);
break;
case INDEX_op_qemu_st_i32:
tcg_out_qemu_st(s, args, false);
break;
case INDEX_op_qemu_st_i64:
tcg_out_qemu_st(s, args, true);
break;
case INDEX_op_ext8s_i32:
case INDEX_op_ext8s_i64:
c = EXTSB;
goto gen_ext;
case INDEX_op_ext16s_i32:
case INDEX_op_ext16s_i64:
c = EXTSH;
goto gen_ext;
case INDEX_op_ext_i32_i64:
case INDEX_op_ext32s_i64:
c = EXTSW;
goto gen_ext;
gen_ext:
tcg_out32(s, c | RS(args[1]) | RA(args[0]));
break;
case INDEX_op_extu_i32_i64:
tcg_out_ext32u(s, args[0], args[1]);
break;
case INDEX_op_setcond_i32:
tcg_out_setcond(s, TCG_TYPE_I32, args[3], args[0], args[1], args[2],
const_args[2]);
break;
case INDEX_op_setcond_i64:
tcg_out_setcond(s, TCG_TYPE_I64, args[3], args[0], args[1], args[2],
const_args[2]);
break;
case INDEX_op_setcond2_i32:
tcg_out_setcond2(s, args, const_args);
break;
case INDEX_op_bswap16_i32:
case INDEX_op_bswap16_i64:
a0 = args[0], a1 = args[1];
/* a1 = abcd */
if (a0 != a1) {
/* a0 = (a1 r<< 24) & 0xff # 000c */
tcg_out_rlw(s, RLWINM, a0, a1, 24, 24, 31);
/* a0 = (a0 & ~0xff00) | (a1 r<< 8) & 0xff00 # 00dc */
tcg_out_rlw(s, RLWIMI, a0, a1, 8, 16, 23);
} else {
/* r0 = (a1 r<< 8) & 0xff00 # 00d0 */
tcg_out_rlw(s, RLWINM, TCG_REG_R0, a1, 8, 16, 23);
/* a0 = (a1 r<< 24) & 0xff # 000c */
tcg_out_rlw(s, RLWINM, a0, a1, 24, 24, 31);
/* a0 = a0 | r0 # 00dc */
tcg_out32(s, OR | SAB(TCG_REG_R0, a0, a0));
}
break;
case INDEX_op_bswap32_i32:
case INDEX_op_bswap32_i64:
/* Stolen from gcc's builtin_bswap32 */
a1 = args[1];
a0 = args[0] == a1 ? TCG_REG_R0 : args[0];
/* a1 = args[1] # abcd */
/* a0 = rotate_left (a1, 8) # bcda */
tcg_out_rlw(s, RLWINM, a0, a1, 8, 0, 31);
/* a0 = (a0 & ~0xff000000) | ((a1 r<< 24) & 0xff000000) # dcda */
tcg_out_rlw(s, RLWIMI, a0, a1, 24, 0, 7);
/* a0 = (a0 & ~0x0000ff00) | ((a1 r<< 24) & 0x0000ff00) # dcba */
tcg_out_rlw(s, RLWIMI, a0, a1, 24, 16, 23);
if (a0 == TCG_REG_R0) {
tcg_out_mov(s, TCG_TYPE_REG, args[0], a0);
}
break;
case INDEX_op_bswap64_i64:
a0 = args[0], a1 = args[1], a2 = TCG_REG_R0;
if (a0 == a1) {
a0 = TCG_REG_R0;
a2 = a1;
}
/* a1 = # abcd efgh */
/* a0 = rl32(a1, 8) # 0000 fghe */
tcg_out_rlw(s, RLWINM, a0, a1, 8, 0, 31);
/* a0 = dep(a0, rl32(a1, 24), 0xff000000) # 0000 hghe */
tcg_out_rlw(s, RLWIMI, a0, a1, 24, 0, 7);
/* a0 = dep(a0, rl32(a1, 24), 0x0000ff00) # 0000 hgfe */
tcg_out_rlw(s, RLWIMI, a0, a1, 24, 16, 23);
/* a0 = rl64(a0, 32) # hgfe 0000 */
/* a2 = rl64(a1, 32) # efgh abcd */
tcg_out_rld(s, RLDICL, a0, a0, 32, 0);
tcg_out_rld(s, RLDICL, a2, a1, 32, 0);
/* a0 = dep(a0, rl32(a2, 8), 0xffffffff) # hgfe bcda */
tcg_out_rlw(s, RLWIMI, a0, a2, 8, 0, 31);
/* a0 = dep(a0, rl32(a2, 24), 0xff000000) # hgfe dcda */
tcg_out_rlw(s, RLWIMI, a0, a2, 24, 0, 7);
/* a0 = dep(a0, rl32(a2, 24), 0x0000ff00) # hgfe dcba */
tcg_out_rlw(s, RLWIMI, a0, a2, 24, 16, 23);
if (a0 == 0) {
tcg_out_mov(s, TCG_TYPE_REG, args[0], a0);
}
break;
case INDEX_op_deposit_i32:
if (const_args[2]) {
uint32_t mask = ((2u << (args[4] - 1)) - 1) << args[3];
tcg_out_andi32(s, args[0], args[0], ~mask);
} else {
tcg_out_rlw(s, RLWIMI, args[0], args[2], args[3],
32 - args[3] - args[4], 31 - args[3]);
}
break;
case INDEX_op_deposit_i64:
if (const_args[2]) {
uint64_t mask = ((2ull << (args[4] - 1)) - 1) << args[3];
tcg_out_andi64(s, args[0], args[0], ~mask);
} else {
tcg_out_rld(s, RLDIMI, args[0], args[2], args[3],
64 - args[3] - args[4]);
}
break;
case INDEX_op_movcond_i32:
tcg_out_movcond(s, TCG_TYPE_I32, args[5], args[0], args[1], args[2],
args[3], args[4], const_args[2]);
break;
case INDEX_op_movcond_i64:
tcg_out_movcond(s, TCG_TYPE_I64, args[5], args[0], args[1], args[2],
args[3], args[4], const_args[2]);
break;
#if TCG_TARGET_REG_BITS == 64
case INDEX_op_add2_i64:
#else
case INDEX_op_add2_i32:
#endif
/* Note that the CA bit is defined based on the word size of the
environment. So in 64-bit mode it's always carry-out of bit 63.
The fallback code using deposit works just as well for 32-bit. */
a0 = args[0], a1 = args[1];
if (a0 == args[3] || (!const_args[5] && a0 == args[5])) {
a0 = TCG_REG_R0;
}
if (const_args[4]) {
tcg_out32(s, ADDIC | TAI(a0, args[2], args[4]));
} else {
tcg_out32(s, ADDC | TAB(a0, args[2], args[4]));
}
if (const_args[5]) {
tcg_out32(s, (args[5] ? ADDME : ADDZE) | RT(a1) | RA(args[3]));
} else {
tcg_out32(s, ADDE | TAB(a1, args[3], args[5]));
}
if (a0 != args[0]) {
tcg_out_mov(s, TCG_TYPE_REG, args[0], a0);
}
break;
#if TCG_TARGET_REG_BITS == 64
case INDEX_op_sub2_i64:
#else
case INDEX_op_sub2_i32:
#endif
a0 = args[0], a1 = args[1];
if (a0 == args[5] || (!const_args[3] && a0 == args[3])) {
a0 = TCG_REG_R0;
}
if (const_args[2]) {
tcg_out32(s, SUBFIC | TAI(a0, args[4], args[2]));
} else {
tcg_out32(s, SUBFC | TAB(a0, args[4], args[2]));
}
if (const_args[3]) {
tcg_out32(s, (args[3] ? SUBFME : SUBFZE) | RT(a1) | RA(args[5]));
} else {
tcg_out32(s, SUBFE | TAB(a1, args[5], args[3]));
}
if (a0 != args[0]) {
tcg_out_mov(s, TCG_TYPE_REG, args[0], a0);
}
break;
case INDEX_op_muluh_i32:
tcg_out32(s, MULHWU | TAB(args[0], args[1], args[2]));
break;
case INDEX_op_mulsh_i32:
tcg_out32(s, MULHW | TAB(args[0], args[1], args[2]));
break;
case INDEX_op_muluh_i64:
tcg_out32(s, MULHDU | TAB(args[0], args[1], args[2]));
break;
case INDEX_op_mulsh_i64:
tcg_out32(s, MULHD | TAB(args[0], args[1], args[2]));
break;
case INDEX_op_mov_i32: /* Always emitted via tcg_out_mov. */
case INDEX_op_mov_i64:
case INDEX_op_movi_i32: /* Always emitted via tcg_out_movi. */
case INDEX_op_movi_i64:
case INDEX_op_call: /* Always emitted via tcg_out_call. */
default:
tcg_abort();
}
}
static const TCGTargetOpDef ppc_op_defs[] = {
{ INDEX_op_exit_tb, { } },
{ INDEX_op_goto_tb, { } },
{ INDEX_op_br, { } },
{ 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_st8_i32, { "r", "r" } },
{ INDEX_op_st16_i32, { "r", "r" } },
{ INDEX_op_st_i32, { "r", "r" } },
{ INDEX_op_add_i32, { "r", "r", "ri" } },
{ INDEX_op_mul_i32, { "r", "r", "rI" } },
{ INDEX_op_div_i32, { "r", "r", "r" } },
{ INDEX_op_divu_i32, { "r", "r", "r" } },
{ INDEX_op_sub_i32, { "r", "rI", "ri" } },
{ INDEX_op_and_i32, { "r", "r", "ri" } },
{ INDEX_op_or_i32, { "r", "r", "ri" } },
{ INDEX_op_xor_i32, { "r", "r", "ri" } },
{ INDEX_op_andc_i32, { "r", "r", "ri" } },
{ INDEX_op_orc_i32, { "r", "r", "ri" } },
{ INDEX_op_eqv_i32, { "r", "r", "ri" } },
{ INDEX_op_nand_i32, { "r", "r", "r" } },
{ INDEX_op_nor_i32, { "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_neg_i32, { "r", "r" } },
{ INDEX_op_not_i32, { "r", "r" } },
{ INDEX_op_ext8s_i32, { "r", "r" } },
{ INDEX_op_ext16s_i32, { "r", "r" } },
{ INDEX_op_bswap16_i32, { "r", "r" } },
{ INDEX_op_bswap32_i32, { "r", "r" } },
{ INDEX_op_brcond_i32, { "r", "ri" } },
{ INDEX_op_setcond_i32, { "r", "r", "ri" } },
{ INDEX_op_movcond_i32, { "r", "r", "ri", "rZ", "rZ" } },
{ INDEX_op_deposit_i32, { "r", "0", "rZ" } },
{ INDEX_op_muluh_i32, { "r", "r", "r" } },
{ INDEX_op_mulsh_i32, { "r", "r", "r" } },
#if TCG_TARGET_REG_BITS == 64
{ 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_i64, { "r", "r" } },
{ INDEX_op_st16_i64, { "r", "r" } },
{ INDEX_op_st32_i64, { "r", "r" } },
{ INDEX_op_st_i64, { "r", "r" } },
{ INDEX_op_add_i64, { "r", "r", "rT" } },
{ INDEX_op_sub_i64, { "r", "rI", "rT" } },
{ INDEX_op_and_i64, { "r", "r", "ri" } },
{ INDEX_op_or_i64, { "r", "r", "rU" } },
{ INDEX_op_xor_i64, { "r", "r", "rU" } },
{ INDEX_op_andc_i64, { "r", "r", "ri" } },
{ INDEX_op_orc_i64, { "r", "r", "r" } },
{ INDEX_op_eqv_i64, { "r", "r", "r" } },
{ INDEX_op_nand_i64, { "r", "r", "r" } },
{ INDEX_op_nor_i64, { "r", "r", "r" } },
{ 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_mul_i64, { "r", "r", "rI" } },
{ INDEX_op_div_i64, { "r", "r", "r" } },
{ INDEX_op_divu_i64, { "r", "r", "r" } },
{ INDEX_op_neg_i64, { "r", "r" } },
{ INDEX_op_not_i64, { "r", "r" } },
{ INDEX_op_ext8s_i64, { "r", "r" } },
{ INDEX_op_ext16s_i64, { "r", "r" } },
{ INDEX_op_ext32s_i64, { "r", "r" } },
{ INDEX_op_ext_i32_i64, { "r", "r" } },
{ INDEX_op_extu_i32_i64, { "r", "r" } },
{ INDEX_op_bswap16_i64, { "r", "r" } },
{ INDEX_op_bswap32_i64, { "r", "r" } },
{ INDEX_op_bswap64_i64, { "r", "r" } },
{ INDEX_op_brcond_i64, { "r", "ri" } },
{ INDEX_op_setcond_i64, { "r", "r", "ri" } },
{ INDEX_op_movcond_i64, { "r", "r", "ri", "rZ", "rZ" } },
{ INDEX_op_deposit_i64, { "r", "0", "rZ" } },
{ INDEX_op_mulsh_i64, { "r", "r", "r" } },
{ INDEX_op_muluh_i64, { "r", "r", "r" } },
#endif
#if TCG_TARGET_REG_BITS == 32
{ INDEX_op_brcond2_i32, { "r", "r", "ri", "ri" } },
{ INDEX_op_setcond2_i32, { "r", "r", "r", "ri", "ri" } },
#endif
#if TCG_TARGET_REG_BITS == 64
{ INDEX_op_add2_i64, { "r", "r", "r", "r", "rI", "rZM" } },
{ INDEX_op_sub2_i64, { "r", "r", "rI", "rZM", "r", "r" } },
#else
{ INDEX_op_add2_i32, { "r", "r", "r", "r", "rI", "rZM" } },
{ INDEX_op_sub2_i32, { "r", "r", "rI", "rZM", "r", "r" } },
#endif
#if TCG_TARGET_REG_BITS == 64
{ INDEX_op_qemu_ld_i32, { "r", "L" } },
{ INDEX_op_qemu_st_i32, { "S", "S" } },
{ INDEX_op_qemu_ld_i64, { "r", "L" } },
{ INDEX_op_qemu_st_i64, { "S", "S" } },
#elif TARGET_LONG_BITS == 32
{ INDEX_op_qemu_ld_i32, { "r", "L" } },
{ INDEX_op_qemu_st_i32, { "S", "S" } },
{ INDEX_op_qemu_ld_i64, { "L", "L", "L" } },
{ INDEX_op_qemu_st_i64, { "S", "S", "S" } },
#else
{ INDEX_op_qemu_ld_i32, { "r", "L", "L" } },
{ INDEX_op_qemu_st_i32, { "S", "S", "S" } },
{ INDEX_op_qemu_ld_i64, { "L", "L", "L", "L" } },
{ INDEX_op_qemu_st_i64, { "S", "S", "S", "S" } },
#endif
{ -1 },
};
static void tcg_target_init(TCGContext *s)
{
unsigned long hwcap = qemu_getauxval(AT_HWCAP);
if (hwcap & PPC_FEATURE_ARCH_2_06) {
have_isa_2_06 = true;
}
tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0, 0xffffffff);
tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I64], 0, 0xffffffff);
tcg_regset_set32(tcg_target_call_clobber_regs, 0,
(1 << TCG_REG_R0) |
(1 << TCG_REG_R2) |
(1 << TCG_REG_R3) |
(1 << TCG_REG_R4) |
(1 << TCG_REG_R5) |
(1 << TCG_REG_R6) |
(1 << TCG_REG_R7) |
(1 << TCG_REG_R8) |
(1 << TCG_REG_R9) |
(1 << TCG_REG_R10) |
(1 << TCG_REG_R11) |
(1 << TCG_REG_R12));
tcg_regset_clear(s->reserved_regs);
tcg_regset_set_reg(s->reserved_regs, TCG_REG_R0); /* tcg temp */
tcg_regset_set_reg(s->reserved_regs, TCG_REG_R1); /* stack pointer */
#if defined(_CALL_SYSV)
tcg_regset_set_reg(s->reserved_regs, TCG_REG_R2); /* toc pointer */
#endif
#if defined(_CALL_SYSV) || TCG_TARGET_REG_BITS == 64
tcg_regset_set_reg(s->reserved_regs, TCG_REG_R13); /* thread pointer */
#endif
tcg_regset_set_reg(s->reserved_regs, TCG_REG_TMP1); /* mem temp */
if (USE_REG_RA) {
tcg_regset_set_reg(s->reserved_regs, TCG_REG_RA); /* return addr */
}
tcg_add_target_add_op_defs(ppc_op_defs);
}
#ifdef __ELF__
typedef struct {
DebugFrameCIE cie;
DebugFrameFDEHeader fde;
uint8_t fde_def_cfa[4];
uint8_t fde_reg_ofs[ARRAY_SIZE(tcg_target_callee_save_regs) * 2 + 3];
} DebugFrame;
/* We're expecting a 2 byte uleb128 encoded value. */
QEMU_BUILD_BUG_ON(FRAME_SIZE >= (1 << 14));
#if TCG_TARGET_REG_BITS == 64
# define ELF_HOST_MACHINE EM_PPC64
#else
# define ELF_HOST_MACHINE EM_PPC
#endif
static DebugFrame debug_frame = {
.cie.len = sizeof(DebugFrameCIE)-4, /* length after .len member */
.cie.id = -1,
.cie.version = 1,
.cie.code_align = 1,
.cie.data_align = (-SZR & 0x7f), /* sleb128 -SZR */
.cie.return_column = 65,
/* Total FDE size does not include the "len" member. */
.fde.len = sizeof(DebugFrame) - offsetof(DebugFrame, fde.cie_offset),
.fde_def_cfa = {
12, TCG_REG_R1, /* DW_CFA_def_cfa r1, ... */
(FRAME_SIZE & 0x7f) | 0x80, /* ... uleb128 FRAME_SIZE */
(FRAME_SIZE >> 7)
},
.fde_reg_ofs = {
/* DW_CFA_offset_extended_sf, lr, LR_OFFSET */
0x11, 65, (LR_OFFSET / -SZR) & 0x7f,
}
};
void tcg_register_jit(void *buf, size_t buf_size)
{
uint8_t *p = &debug_frame.fde_reg_ofs[3];
int i;
for (i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); ++i, p += 2) {
p[0] = 0x80 + tcg_target_callee_save_regs[i];
p[1] = (FRAME_SIZE - (REG_SAVE_BOT + i * SZR)) / SZR;
}
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));
}
#endif /* __ELF__ */
static size_t dcache_bsize = 16;
static size_t icache_bsize = 16;
void flush_icache_range(uintptr_t start, uintptr_t stop)
{
uintptr_t p, start1, stop1;
size_t dsize = dcache_bsize;
size_t isize = icache_bsize;
start1 = start & ~(dsize - 1);
stop1 = (stop + dsize - 1) & ~(dsize - 1);
for (p = start1; p < stop1; p += dsize) {
asm volatile ("dcbst 0,%0" : : "r"(p) : "memory");
}
asm volatile ("sync" : : : "memory");
start &= start & ~(isize - 1);
stop1 = (stop + isize - 1) & ~(isize - 1);
for (p = start1; p < stop1; p += isize) {
asm volatile ("icbi 0,%0" : : "r"(p) : "memory");
}
asm volatile ("sync" : : : "memory");
asm volatile ("isync" : : : "memory");
}
#if defined _AIX
#include <sys/systemcfg.h>
static void __attribute__((constructor)) tcg_cache_init(void)
{
icache_bsize = _system_configuration.icache_line;
dcache_bsize = _system_configuration.dcache_line;
}
#elif defined __linux__
static void __attribute__((constructor)) tcg_cache_init(void)
{
unsigned long dsize = qemu_getauxval(AT_DCACHEBSIZE);
unsigned long isize = qemu_getauxval(AT_ICACHEBSIZE);
if (dsize == 0 || isize == 0) {
if (dsize == 0) {
fprintf(stderr, "getauxval AT_DCACHEBSIZE failed\n");
}
if (isize == 0) {
fprintf(stderr, "getauxval AT_ICACHEBSIZE failed\n");
}
exit(1);
}
dcache_bsize = dsize;
icache_bsize = isize;
}
#elif defined __APPLE__
#include <stdio.h>
#include <sys/types.h>
#include <sys/sysctl.h>
static void __attribute__((constructor)) tcg_cache_init(void)
{
size_t len;
unsigned cacheline;
int name[2] = { CTL_HW, HW_CACHELINE };
len = sizeof(cacheline);
if (sysctl(name, 2, &cacheline, &len, NULL, 0)) {
perror("sysctl CTL_HW HW_CACHELINE failed");
exit(1);
}
dcache_bsize = cacheline;
icache_bsize = cacheline;
}
#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/sysctl.h>
static void __attribute__((constructor)) tcg_cache_init(void)
{
size_t len = 4;
unsigned cacheline;
if (sysctlbyname ("machdep.cacheline_size", &cacheline, &len, NULL, 0)) {
fprintf(stderr, "sysctlbyname machdep.cacheline_size failed: %s\n",
strerror(errno));
exit(1);
}
dcache_bsize = cacheline;
icache_bsize = cacheline;
}
#endif
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