diff options
Diffstat (limited to 'thirdparty/pcre2/src/sljit/sljitNativeS390X.c')
| -rw-r--r-- | thirdparty/pcre2/src/sljit/sljitNativeS390X.c | 2812 |
1 files changed, 2812 insertions, 0 deletions
diff --git a/thirdparty/pcre2/src/sljit/sljitNativeS390X.c b/thirdparty/pcre2/src/sljit/sljitNativeS390X.c new file mode 100644 index 0000000000..a8b65112d4 --- /dev/null +++ b/thirdparty/pcre2/src/sljit/sljitNativeS390X.c @@ -0,0 +1,2812 @@ +/* + * Stack-less Just-In-Time compiler + * + * Copyright Zoltan Herczeg (hzmester@freemail.hu). All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, are + * permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this list of + * conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, this list + * of conditions and the following disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/auxv.h> + +#ifdef __ARCH__ +#define ENABLE_STATIC_FACILITY_DETECTION 1 +#else +#define ENABLE_STATIC_FACILITY_DETECTION 0 +#endif +#define ENABLE_DYNAMIC_FACILITY_DETECTION 1 + +SLJIT_API_FUNC_ATTRIBUTE const char* sljit_get_platform_name(void) +{ + return "s390x" SLJIT_CPUINFO; +} + +/* Instructions. */ +typedef sljit_uw sljit_ins; + +/* Instruction tags (most significant halfword). */ +const sljit_ins sljit_ins_const = (sljit_ins)1 << 48; + +static const sljit_u8 reg_map[SLJIT_NUMBER_OF_REGISTERS + 4] = { + 14, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 0, 1 +}; + +/* there are also a[2-15] available, but they are slower to access and + * their use is limited as mundaym explained: + * https://github.com/zherczeg/sljit/pull/91#discussion_r486895689 + */ + +/* General Purpose Registers [0-15]. */ +typedef sljit_uw sljit_gpr; + +/* + * WARNING + * the following code is non standard and should be improved for + * consistency, but doesn't use SLJIT_NUMBER_OF_REGISTERS based + * registers because r0 and r1 are the ABI recommended volatiles. + * there is a gpr() function that maps sljit to physical register numbers + * that should be used instead of the usual index into reg_map[] and + * will be retired ASAP (TODO: carenas) + */ + +const sljit_gpr r0 = 0; /* reg_map[SLJIT_NUMBER_OF_REGISTERS + 2]: 0 in address calculations; reserved */ +const sljit_gpr r1 = 1; /* reg_map[SLJIT_NUMBER_OF_REGISTERS + 3]: reserved */ +const sljit_gpr r2 = 2; /* reg_map[1]: 1st argument */ +const sljit_gpr r3 = 3; /* reg_map[2]: 2nd argument */ +const sljit_gpr r4 = 4; /* reg_map[3]: 3rd argument */ +const sljit_gpr r5 = 5; /* reg_map[4]: 4th argument */ +const sljit_gpr r6 = 6; /* reg_map[5]: 5th argument; 1st saved register */ +const sljit_gpr r7 = 7; /* reg_map[6] */ +const sljit_gpr r8 = 8; /* reg_map[7] */ +const sljit_gpr r9 = 9; /* reg_map[8] */ +const sljit_gpr r10 = 10; /* reg_map[9] */ +const sljit_gpr r11 = 11; /* reg_map[10] */ +const sljit_gpr r12 = 12; /* reg_map[11]: GOT */ +const sljit_gpr r13 = 13; /* reg_map[12]: Literal Pool pointer */ +const sljit_gpr r14 = 14; /* reg_map[0]: return address and flag register */ +const sljit_gpr r15 = 15; /* reg_map[SLJIT_NUMBER_OF_REGISTERS + 1]: stack pointer */ + +/* WARNING: r12 and r13 shouldn't be used as per ABI recommendation */ +/* TODO(carenas): r12 might conflict in PIC code, reserve? */ +/* TODO(carenas): r13 is usually pointed to "pool" per ABI, using a tmp + * like we do know might be faster though, reserve? + */ + +/* TODO(carenas): should be named TMP_REG[1-2] for consistency */ +#define tmp0 r0 +#define tmp1 r1 + +/* TODO(carenas): flags should move to a different register so that + * link register doesn't need to change + */ + +/* Link registers. The normal link register is r14, but since + we use that for flags we need to use r0 instead to do fast + calls so that flags are preserved. */ +const sljit_gpr link_r = 14; /* r14 */ +const sljit_gpr fast_link_r = 0; /* r0 */ + +/* Flag register layout: + + 0 32 33 34 36 64 + +---------------+---+---+-------+-------+ + | ZERO | 0 | 0 | C C |///////| + +---------------+---+---+-------+-------+ +*/ +const sljit_gpr flag_r = 14; /* r14 */ + +struct sljit_s390x_const { + struct sljit_const const_; /* must be first */ + sljit_sw init_value; /* required to build literal pool */ +}; + +/* Convert SLJIT register to hardware register. */ +static SLJIT_INLINE sljit_gpr gpr(sljit_s32 r) +{ + SLJIT_ASSERT(r != SLJIT_UNUSED); + SLJIT_ASSERT(r < (sljit_s32)(sizeof(reg_map) / sizeof(reg_map[0]))); + return reg_map[r]; +} + +/* Size of instruction in bytes. Tags must already be cleared. */ +static SLJIT_INLINE sljit_uw sizeof_ins(sljit_ins ins) +{ + /* keep faulting instructions */ + if (ins == 0) + return 2; + + if ((ins & 0x00000000ffffL) == ins) + return 2; + if ((ins & 0x0000ffffffffL) == ins) + return 4; + if ((ins & 0xffffffffffffL) == ins) + return 6; + + SLJIT_UNREACHABLE(); + return (sljit_uw)-1; +} + +static sljit_s32 push_inst(struct sljit_compiler *compiler, sljit_ins ins) +{ + sljit_ins *ibuf = (sljit_ins *)ensure_buf(compiler, sizeof(sljit_ins)); + FAIL_IF(!ibuf); + *ibuf = ins; + compiler->size++; + return SLJIT_SUCCESS; +} + +static sljit_s32 encode_inst(void **ptr, sljit_ins ins) +{ + sljit_u16 *ibuf = (sljit_u16 *)*ptr; + sljit_uw size = sizeof_ins(ins); + + SLJIT_ASSERT((size & 6) == size); + switch (size) { + case 6: + *ibuf++ = (sljit_u16)(ins >> 32); + /* fallthrough */ + case 4: + *ibuf++ = (sljit_u16)(ins >> 16); + /* fallthrough */ + case 2: + *ibuf++ = (sljit_u16)(ins); + } + *ptr = (void*)ibuf; + return SLJIT_SUCCESS; +} + +/* Map the given type to a 4-bit condition code mask. */ +static SLJIT_INLINE sljit_u8 get_cc(sljit_s32 type) { + const sljit_u8 eq = 1 << 3; /* equal {,to zero} */ + const sljit_u8 lt = 1 << 2; /* less than {,zero} */ + const sljit_u8 gt = 1 << 1; /* greater than {,zero} */ + const sljit_u8 ov = 1 << 0; /* {overflow,NaN} */ + + switch (type) { + case SLJIT_EQUAL: + case SLJIT_EQUAL_F64: + return eq; + + case SLJIT_NOT_EQUAL: + case SLJIT_NOT_EQUAL_F64: + return ~eq; + + case SLJIT_LESS: + case SLJIT_SIG_LESS: + case SLJIT_LESS_F64: + return lt; + + case SLJIT_LESS_EQUAL: + case SLJIT_SIG_LESS_EQUAL: + case SLJIT_LESS_EQUAL_F64: + return (lt | eq); + + case SLJIT_GREATER: + case SLJIT_SIG_GREATER: + case SLJIT_GREATER_F64: + return gt; + + case SLJIT_GREATER_EQUAL: + case SLJIT_SIG_GREATER_EQUAL: + case SLJIT_GREATER_EQUAL_F64: + return (gt | eq); + + case SLJIT_OVERFLOW: + case SLJIT_MUL_OVERFLOW: + case SLJIT_UNORDERED_F64: + return ov; + + case SLJIT_NOT_OVERFLOW: + case SLJIT_MUL_NOT_OVERFLOW: + case SLJIT_ORDERED_F64: + return ~ov; + } + + SLJIT_UNREACHABLE(); + return (sljit_u8)-1; +} + +/* Facility to bit index mappings. + Note: some facilities share the same bit index. */ +typedef sljit_uw facility_bit; +#define STORE_FACILITY_LIST_EXTENDED_FACILITY 7 +#define FAST_LONG_DISPLACEMENT_FACILITY 19 +#define EXTENDED_IMMEDIATE_FACILITY 21 +#define GENERAL_INSTRUCTION_EXTENSION_FACILITY 34 +#define DISTINCT_OPERAND_FACILITY 45 +#define HIGH_WORD_FACILITY 45 +#define POPULATION_COUNT_FACILITY 45 +#define LOAD_STORE_ON_CONDITION_1_FACILITY 45 +#define MISCELLANEOUS_INSTRUCTION_EXTENSIONS_1_FACILITY 49 +#define LOAD_STORE_ON_CONDITION_2_FACILITY 53 +#define MISCELLANEOUS_INSTRUCTION_EXTENSIONS_2_FACILITY 58 +#define VECTOR_FACILITY 129 +#define VECTOR_ENHANCEMENTS_1_FACILITY 135 + +/* Report whether a facility is known to be present due to the compiler + settings. This function should always be compiled to a constant + value given a constant argument. */ +static SLJIT_INLINE int have_facility_static(facility_bit x) +{ +#if ENABLE_STATIC_FACILITY_DETECTION + switch (x) { + case FAST_LONG_DISPLACEMENT_FACILITY: + return (__ARCH__ >= 6 /* z990 */); + case EXTENDED_IMMEDIATE_FACILITY: + case STORE_FACILITY_LIST_EXTENDED_FACILITY: + return (__ARCH__ >= 7 /* z9-109 */); + case GENERAL_INSTRUCTION_EXTENSION_FACILITY: + return (__ARCH__ >= 8 /* z10 */); + case DISTINCT_OPERAND_FACILITY: + return (__ARCH__ >= 9 /* z196 */); + case MISCELLANEOUS_INSTRUCTION_EXTENSIONS_1_FACILITY: + return (__ARCH__ >= 10 /* zEC12 */); + case LOAD_STORE_ON_CONDITION_2_FACILITY: + case VECTOR_FACILITY: + return (__ARCH__ >= 11 /* z13 */); + case MISCELLANEOUS_INSTRUCTION_EXTENSIONS_2_FACILITY: + case VECTOR_ENHANCEMENTS_1_FACILITY: + return (__ARCH__ >= 12 /* z14 */); + default: + SLJIT_UNREACHABLE(); + } +#endif + return 0; +} + +static SLJIT_INLINE unsigned long get_hwcap() +{ + static unsigned long hwcap = 0; + if (SLJIT_UNLIKELY(!hwcap)) { + hwcap = getauxval(AT_HWCAP); + SLJIT_ASSERT(hwcap != 0); + } + return hwcap; +} + +static SLJIT_INLINE int have_stfle() +{ + if (have_facility_static(STORE_FACILITY_LIST_EXTENDED_FACILITY)) + return 1; + + return (get_hwcap() & HWCAP_S390_STFLE); +} + +/* Report whether the given facility is available. This function always + performs a runtime check. */ +static int have_facility_dynamic(facility_bit x) +{ +#if ENABLE_DYNAMIC_FACILITY_DETECTION + static struct { + sljit_uw bits[4]; + } cpu_features; + size_t size = sizeof(cpu_features); + const sljit_uw word_index = x >> 6; + const sljit_uw bit_index = ((1UL << 63) >> (x & 63)); + + SLJIT_ASSERT(x < size * 8); + if (SLJIT_UNLIKELY(!have_stfle())) + return 0; + + if (SLJIT_UNLIKELY(cpu_features.bits[0] == 0)) { + __asm__ __volatile__ ( + "lgr %%r0, %0;" + "stfle 0(%1);" + /* outputs */: + /* inputs */: "d" ((size / 8) - 1), "a" (&cpu_features) + /* clobbers */: "r0", "cc", "memory" + ); + SLJIT_ASSERT(cpu_features.bits[0] != 0); + } + return (cpu_features.bits[word_index] & bit_index) != 0; +#else + return 0; +#endif +} + +#define HAVE_FACILITY(name, bit) \ +static SLJIT_INLINE int name() \ +{ \ + static int have = -1; \ + /* Static check first. May allow the function to be optimized away. */ \ + if (have_facility_static(bit)) \ + have = 1; \ + else if (SLJIT_UNLIKELY(have < 0)) \ + have = have_facility_dynamic(bit) ? 1 : 0; \ +\ + return have; \ +} + +HAVE_FACILITY(have_eimm, EXTENDED_IMMEDIATE_FACILITY) +HAVE_FACILITY(have_ldisp, FAST_LONG_DISPLACEMENT_FACILITY) +HAVE_FACILITY(have_genext, GENERAL_INSTRUCTION_EXTENSION_FACILITY) +HAVE_FACILITY(have_lscond1, LOAD_STORE_ON_CONDITION_1_FACILITY) +HAVE_FACILITY(have_lscond2, LOAD_STORE_ON_CONDITION_2_FACILITY) +HAVE_FACILITY(have_misc2, MISCELLANEOUS_INSTRUCTION_EXTENSIONS_2_FACILITY) +#undef HAVE_FACILITY + +#define is_u12(d) (0 <= (d) && (d) <= 0x00000fffL) +#define is_u32(d) (0 <= (d) && (d) <= 0xffffffffL) + +#define CHECK_SIGNED(v, bitlen) \ + ((v) == (((v) << (sizeof(v) * 8 - bitlen)) >> (sizeof(v) * 8 - bitlen))) + +#define is_s16(d) CHECK_SIGNED((d), 16) +#define is_s20(d) CHECK_SIGNED((d), 20) +#define is_s32(d) CHECK_SIGNED((d), 32) + +static SLJIT_INLINE sljit_uw disp_s20(sljit_s32 d) +{ + sljit_uw dh = (d >> 12) & 0xff; + sljit_uw dl = (d << 8) & 0xfff00; + + SLJIT_ASSERT(is_s20(d)); + return dh | dl; +} + +/* TODO(carenas): variadic macro is not strictly needed */ +#define SLJIT_S390X_INSTRUCTION(op, ...) \ +static SLJIT_INLINE sljit_ins op(__VA_ARGS__) + +/* RR form instructions. */ +#define SLJIT_S390X_RR(name, pattern) \ +SLJIT_S390X_INSTRUCTION(name, sljit_gpr dst, sljit_gpr src) \ +{ \ + return (pattern) | ((dst & 0xf) << 4) | (src & 0xf); \ +} + +/* ADD */ +SLJIT_S390X_RR(ar, 0x1a00) + +/* ADD LOGICAL */ +SLJIT_S390X_RR(alr, 0x1e00) + +/* AND */ +SLJIT_S390X_RR(nr, 0x1400) + +/* BRANCH AND SAVE */ +SLJIT_S390X_RR(basr, 0x0d00) + +/* BRANCH ON CONDITION */ +SLJIT_S390X_RR(bcr, 0x0700) /* TODO(mundaym): type for mask? */ + +/* COMPARE */ +SLJIT_S390X_RR(cr, 0x1900) + +/* COMPARE LOGICAL */ +SLJIT_S390X_RR(clr, 0x1500) + +/* DIVIDE */ +SLJIT_S390X_RR(dr, 0x1d00) + +/* EXCLUSIVE OR */ +SLJIT_S390X_RR(xr, 0x1700) + +/* LOAD */ +SLJIT_S390X_RR(lr, 0x1800) + +/* LOAD COMPLEMENT */ +SLJIT_S390X_RR(lcr, 0x1300) + +/* OR */ +SLJIT_S390X_RR(or, 0x1600) + +/* SUBTRACT */ +SLJIT_S390X_RR(sr, 0x1b00) + +/* SUBTRACT LOGICAL */ +SLJIT_S390X_RR(slr, 0x1f00) + +#undef SLJIT_S390X_RR + +/* RRE form instructions */ +#define SLJIT_S390X_RRE(name, pattern) \ +SLJIT_S390X_INSTRUCTION(name, sljit_gpr dst, sljit_gpr src) \ +{ \ + return (pattern) | ((dst & 0xf) << 4) | (src & 0xf); \ +} + +/* ADD */ +SLJIT_S390X_RRE(agr, 0xb9080000) + +/* ADD LOGICAL */ +SLJIT_S390X_RRE(algr, 0xb90a0000) + +/* ADD LOGICAL WITH CARRY */ +SLJIT_S390X_RRE(alcr, 0xb9980000) +SLJIT_S390X_RRE(alcgr, 0xb9880000) + +/* AND */ +SLJIT_S390X_RRE(ngr, 0xb9800000) + +/* COMPARE */ +SLJIT_S390X_RRE(cgr, 0xb9200000) + +/* COMPARE LOGICAL */ +SLJIT_S390X_RRE(clgr, 0xb9210000) + +/* DIVIDE LOGICAL */ +SLJIT_S390X_RRE(dlr, 0xb9970000) +SLJIT_S390X_RRE(dlgr, 0xb9870000) + +/* DIVIDE SINGLE */ +SLJIT_S390X_RRE(dsgr, 0xb90d0000) + +/* EXCLUSIVE OR */ +SLJIT_S390X_RRE(xgr, 0xb9820000) + +/* LOAD */ +SLJIT_S390X_RRE(lgr, 0xb9040000) +SLJIT_S390X_RRE(lgfr, 0xb9140000) + +/* LOAD BYTE */ +SLJIT_S390X_RRE(lbr, 0xb9260000) +SLJIT_S390X_RRE(lgbr, 0xb9060000) + +/* LOAD COMPLEMENT */ +SLJIT_S390X_RRE(lcgr, 0xb9030000) + +/* LOAD HALFWORD */ +SLJIT_S390X_RRE(lhr, 0xb9270000) +SLJIT_S390X_RRE(lghr, 0xb9070000) + +/* LOAD LOGICAL */ +SLJIT_S390X_RRE(llgfr, 0xb9160000) + +/* LOAD LOGICAL CHARACTER */ +SLJIT_S390X_RRE(llcr, 0xb9940000) +SLJIT_S390X_RRE(llgcr, 0xb9840000) + +/* LOAD LOGICAL HALFWORD */ +SLJIT_S390X_RRE(llhr, 0xb9950000) +SLJIT_S390X_RRE(llghr, 0xb9850000) + +/* MULTIPLY LOGICAL */ +SLJIT_S390X_RRE(mlgr, 0xb9860000) + +/* MULTIPLY SINGLE */ +SLJIT_S390X_RRE(msr, 0xb2520000) +SLJIT_S390X_RRE(msgr, 0xb90c0000) +SLJIT_S390X_RRE(msgfr, 0xb91c0000) + +/* OR */ +SLJIT_S390X_RRE(ogr, 0xb9810000) + +/* SUBTRACT */ +SLJIT_S390X_RRE(sgr, 0xb9090000) + +/* SUBTRACT LOGICAL */ +SLJIT_S390X_RRE(slgr, 0xb90b0000) + +/* SUBTRACT LOGICAL WITH BORROW */ +SLJIT_S390X_RRE(slbr, 0xb9990000) +SLJIT_S390X_RRE(slbgr, 0xb9890000) + +#undef SLJIT_S390X_RRE + +/* RI-a form instructions */ +#define SLJIT_S390X_RIA(name, pattern, imm_type) \ +SLJIT_S390X_INSTRUCTION(name, sljit_gpr reg, imm_type imm) \ +{ \ + return (pattern) | ((reg & 0xf) << 20) | (imm & 0xffff); \ +} + +/* ADD HALFWORD IMMEDIATE */ +SLJIT_S390X_RIA(ahi, 0xa70a0000, sljit_s16) +SLJIT_S390X_RIA(aghi, 0xa70b0000, sljit_s16) + +/* COMPARE HALFWORD IMMEDIATE */ +SLJIT_S390X_RIA(chi, 0xa70e0000, sljit_s16) +SLJIT_S390X_RIA(cghi, 0xa70f0000, sljit_s16) + +/* LOAD HALFWORD IMMEDIATE */ +SLJIT_S390X_RIA(lhi, 0xa7080000, sljit_s16) +SLJIT_S390X_RIA(lghi, 0xa7090000, sljit_s16) + +/* LOAD LOGICAL IMMEDIATE */ +SLJIT_S390X_RIA(llihh, 0xa50c0000, sljit_u16) +SLJIT_S390X_RIA(llihl, 0xa50d0000, sljit_u16) +SLJIT_S390X_RIA(llilh, 0xa50e0000, sljit_u16) +SLJIT_S390X_RIA(llill, 0xa50f0000, sljit_u16) + +/* MULTIPLY HALFWORD IMMEDIATE */ +SLJIT_S390X_RIA(mhi, 0xa70c0000, sljit_s16) +SLJIT_S390X_RIA(mghi, 0xa70d0000, sljit_s16) + +/* OR IMMEDIATE */ +SLJIT_S390X_RIA(oilh, 0xa50a0000, sljit_u16) + +/* TEST UNDER MASK */ +SLJIT_S390X_RIA(tmlh, 0xa7000000, sljit_u16) + +#undef SLJIT_S390X_RIA + +/* RIL-a form instructions (requires extended immediate facility) */ +#define SLJIT_S390X_RILA(name, pattern, imm_type) \ +SLJIT_S390X_INSTRUCTION(name, sljit_gpr reg, imm_type imm) \ +{ \ + SLJIT_ASSERT(have_eimm()); \ + return (pattern) | ((sljit_ins)(reg & 0xf) << 36) | (imm & 0xffffffff); \ +} + +/* ADD IMMEDIATE */ +SLJIT_S390X_RILA(afi, 0xc20900000000, sljit_s32) +SLJIT_S390X_RILA(agfi, 0xc20800000000, sljit_s32) + +/* ADD IMMEDIATE HIGH */ +SLJIT_S390X_RILA(aih, 0xcc0800000000, sljit_s32) /* TODO(mundaym): high-word facility? */ + +/* ADD LOGICAL IMMEDIATE */ +SLJIT_S390X_RILA(alfi, 0xc20b00000000, sljit_u32) +SLJIT_S390X_RILA(algfi, 0xc20a00000000, sljit_u32) + +/* AND IMMEDIATE */ +SLJIT_S390X_RILA(nihf, 0xc00a00000000, sljit_u32) +SLJIT_S390X_RILA(nilf, 0xc00b00000000, sljit_u32) + +/* COMPARE IMMEDIATE */ +SLJIT_S390X_RILA(cfi, 0xc20d00000000, sljit_s32) +SLJIT_S390X_RILA(cgfi, 0xc20c00000000, sljit_s32) + +/* COMPARE IMMEDIATE HIGH */ +SLJIT_S390X_RILA(cih, 0xcc0d00000000, sljit_s32) /* TODO(mundaym): high-word facility? */ + +/* COMPARE LOGICAL IMMEDIATE */ +SLJIT_S390X_RILA(clfi, 0xc20f00000000, sljit_u32) +SLJIT_S390X_RILA(clgfi, 0xc20e00000000, sljit_u32) + +/* EXCLUSIVE OR IMMEDIATE */ +SLJIT_S390X_RILA(xilf, 0xc00700000000, sljit_u32) + +/* INSERT IMMEDIATE */ +SLJIT_S390X_RILA(iihf, 0xc00800000000, sljit_u32) +SLJIT_S390X_RILA(iilf, 0xc00900000000, sljit_u32) + +/* LOAD IMMEDIATE */ +SLJIT_S390X_RILA(lgfi, 0xc00100000000, sljit_s32) + +/* LOAD LOGICAL IMMEDIATE */ +SLJIT_S390X_RILA(llihf, 0xc00e00000000, sljit_u32) +SLJIT_S390X_RILA(llilf, 0xc00f00000000, sljit_u32) + +/* OR IMMEDIATE */ +SLJIT_S390X_RILA(oilf, 0xc00d00000000, sljit_u32) + +#undef SLJIT_S390X_RILA + +/* RX-a form instructions */ +#define SLJIT_S390X_RXA(name, pattern) \ +SLJIT_S390X_INSTRUCTION(name, sljit_gpr r, sljit_u16 d, sljit_gpr x, sljit_gpr b) \ +{ \ + sljit_ins ri, xi, bi, di; \ +\ + SLJIT_ASSERT((d & 0xfff) == d); \ + ri = (sljit_ins)(r & 0xf) << 20; \ + xi = (sljit_ins)(x & 0xf) << 16; \ + bi = (sljit_ins)(b & 0xf) << 12; \ + di = (sljit_ins)(d & 0xfff); \ +\ + return (pattern) | ri | xi | bi | di; \ +} + +/* ADD */ +SLJIT_S390X_RXA(a, 0x5a000000) + +/* ADD LOGICAL */ +SLJIT_S390X_RXA(al, 0x5e000000) + +/* AND */ +SLJIT_S390X_RXA(n, 0x54000000) + +/* EXCLUSIVE OR */ +SLJIT_S390X_RXA(x, 0x57000000) + +/* LOAD */ +SLJIT_S390X_RXA(l, 0x58000000) + +/* LOAD ADDRESS */ +SLJIT_S390X_RXA(la, 0x41000000) + +/* LOAD HALFWORD */ +SLJIT_S390X_RXA(lh, 0x48000000) + +/* MULTIPLY SINGLE */ +SLJIT_S390X_RXA(ms, 0x71000000) + +/* OR */ +SLJIT_S390X_RXA(o, 0x56000000) + +/* STORE */ +SLJIT_S390X_RXA(st, 0x50000000) + +/* STORE CHARACTER */ +SLJIT_S390X_RXA(stc, 0x42000000) + +/* STORE HALFWORD */ +SLJIT_S390X_RXA(sth, 0x40000000) + +/* SUBTRACT */ +SLJIT_S390X_RXA(s, 0x5b000000) + +/* SUBTRACT LOGICAL */ +SLJIT_S390X_RXA(sl, 0x5f000000) + +#undef SLJIT_S390X_RXA + +/* RXY-a instructions */ +#define SLJIT_S390X_RXYA(name, pattern, cond) \ +SLJIT_S390X_INSTRUCTION(name, sljit_gpr r, sljit_s32 d, sljit_gpr x, sljit_gpr b) \ +{ \ + sljit_ins ri, xi, bi, di; \ +\ + SLJIT_ASSERT(cond); \ + ri = (sljit_ins)(r & 0xf) << 36; \ + xi = (sljit_ins)(x & 0xf) << 32; \ + bi = (sljit_ins)(b & 0xf) << 28; \ + di = (sljit_ins)disp_s20(d) << 8; \ +\ + return (pattern) | ri | xi | bi | di; \ +} + +/* ADD */ +SLJIT_S390X_RXYA(ay, 0xe3000000005a, have_ldisp()) +SLJIT_S390X_RXYA(ag, 0xe30000000008, 1) + +/* ADD LOGICAL */ +SLJIT_S390X_RXYA(aly, 0xe3000000005e, have_ldisp()) +SLJIT_S390X_RXYA(alg, 0xe3000000000a, 1) + +/* ADD LOGICAL WITH CARRY */ +SLJIT_S390X_RXYA(alc, 0xe30000000098, 1) +SLJIT_S390X_RXYA(alcg, 0xe30000000088, 1) + +/* AND */ +SLJIT_S390X_RXYA(ny, 0xe30000000054, have_ldisp()) +SLJIT_S390X_RXYA(ng, 0xe30000000080, 1) + +/* EXCLUSIVE OR */ +SLJIT_S390X_RXYA(xy, 0xe30000000057, have_ldisp()) +SLJIT_S390X_RXYA(xg, 0xe30000000082, 1) + +/* LOAD */ +SLJIT_S390X_RXYA(ly, 0xe30000000058, have_ldisp()) +SLJIT_S390X_RXYA(lg, 0xe30000000004, 1) +SLJIT_S390X_RXYA(lgf, 0xe30000000014, 1) + +/* LOAD BYTE */ +SLJIT_S390X_RXYA(lb, 0xe30000000076, have_ldisp()) +SLJIT_S390X_RXYA(lgb, 0xe30000000077, have_ldisp()) + +/* LOAD HALFWORD */ +SLJIT_S390X_RXYA(lhy, 0xe30000000078, have_ldisp()) +SLJIT_S390X_RXYA(lgh, 0xe30000000015, 1) + +/* LOAD LOGICAL */ +SLJIT_S390X_RXYA(llgf, 0xe30000000016, 1) + +/* LOAD LOGICAL CHARACTER */ +SLJIT_S390X_RXYA(llc, 0xe30000000094, have_eimm()) +SLJIT_S390X_RXYA(llgc, 0xe30000000090, 1) + +/* LOAD LOGICAL HALFWORD */ +SLJIT_S390X_RXYA(llh, 0xe30000000095, have_eimm()) +SLJIT_S390X_RXYA(llgh, 0xe30000000091, 1) + +/* MULTIPLY SINGLE */ +SLJIT_S390X_RXYA(msy, 0xe30000000051, have_ldisp()) +SLJIT_S390X_RXYA(msg, 0xe3000000000c, 1) + +/* OR */ +SLJIT_S390X_RXYA(oy, 0xe30000000056, have_ldisp()) +SLJIT_S390X_RXYA(og, 0xe30000000081, 1) + +/* STORE */ +SLJIT_S390X_RXYA(sty, 0xe30000000050, have_ldisp()) +SLJIT_S390X_RXYA(stg, 0xe30000000024, 1) + +/* STORE CHARACTER */ +SLJIT_S390X_RXYA(stcy, 0xe30000000072, have_ldisp()) + +/* STORE HALFWORD */ +SLJIT_S390X_RXYA(sthy, 0xe30000000070, have_ldisp()) + +/* SUBTRACT */ +SLJIT_S390X_RXYA(sy, 0xe3000000005b, have_ldisp()) +SLJIT_S390X_RXYA(sg, 0xe30000000009, 1) + +/* SUBTRACT LOGICAL */ +SLJIT_S390X_RXYA(sly, 0xe3000000005f, have_ldisp()) +SLJIT_S390X_RXYA(slg, 0xe3000000000b, 1) + +/* SUBTRACT LOGICAL WITH BORROW */ +SLJIT_S390X_RXYA(slb, 0xe30000000099, 1) +SLJIT_S390X_RXYA(slbg, 0xe30000000089, 1) + +#undef SLJIT_S390X_RXYA + +/* RS-a instructions */ +#define SLJIT_S390X_RSA(name, pattern) \ +SLJIT_S390X_INSTRUCTION(name, sljit_gpr reg, sljit_sw d, sljit_gpr b) \ +{ \ + sljit_ins r1 = (sljit_ins)(reg & 0xf) << 20; \ + sljit_ins b2 = (sljit_ins)(b & 0xf) << 12; \ + sljit_ins d2 = (sljit_ins)(d & 0xfff); \ + return (pattern) | r1 | b2 | d2; \ +} + +/* SHIFT LEFT SINGLE LOGICAL */ +SLJIT_S390X_RSA(sll, 0x89000000) + +/* SHIFT RIGHT SINGLE */ +SLJIT_S390X_RSA(sra, 0x8a000000) + +/* SHIFT RIGHT SINGLE LOGICAL */ +SLJIT_S390X_RSA(srl, 0x88000000) + +#undef SLJIT_S390X_RSA + +/* RSY-a instructions */ +#define SLJIT_S390X_RSYA(name, pattern, cond) \ +SLJIT_S390X_INSTRUCTION(name, sljit_gpr dst, sljit_gpr src, sljit_sw d, sljit_gpr b) \ +{ \ + sljit_ins r1, r3, b2, d2; \ +\ + SLJIT_ASSERT(cond); \ + r1 = (sljit_ins)(dst & 0xf) << 36; \ + r3 = (sljit_ins)(src & 0xf) << 32; \ + b2 = (sljit_ins)(b & 0xf) << 28; \ + d2 = (sljit_ins)disp_s20(d) << 8; \ +\ + return (pattern) | r1 | r3 | b2 | d2; \ +} + +/* LOAD MULTIPLE */ +SLJIT_S390X_RSYA(lmg, 0xeb0000000004, 1) + +/* SHIFT LEFT LOGICAL */ +SLJIT_S390X_RSYA(sllg, 0xeb000000000d, 1) + +/* SHIFT RIGHT SINGLE */ +SLJIT_S390X_RSYA(srag, 0xeb000000000a, 1) + +/* SHIFT RIGHT SINGLE LOGICAL */ +SLJIT_S390X_RSYA(srlg, 0xeb000000000c, 1) + +/* STORE MULTIPLE */ +SLJIT_S390X_RSYA(stmg, 0xeb0000000024, 1) + +#undef SLJIT_S390X_RSYA + +/* RIE-f instructions (require general-instructions-extension facility) */ +#define SLJIT_S390X_RIEF(name, pattern) \ +SLJIT_S390X_INSTRUCTION(name, sljit_gpr dst, sljit_gpr src, sljit_u8 start, sljit_u8 end, sljit_u8 rot) \ +{ \ + sljit_ins r1, r2, i3, i4, i5; \ +\ + SLJIT_ASSERT(have_genext()); \ + r1 = (sljit_ins)(dst & 0xf) << 36; \ + r2 = (sljit_ins)(src & 0xf) << 32; \ + i3 = (sljit_ins)start << 24; \ + i4 = (sljit_ins)end << 16; \ + i5 = (sljit_ins)rot << 8; \ +\ + return (pattern) | r1 | r2 | i3 | i4 | i5; \ +} + +/* ROTATE THEN AND SELECTED BITS */ +/* SLJIT_S390X_RIEF(rnsbg, 0xec0000000054) */ + +/* ROTATE THEN EXCLUSIVE OR SELECTED BITS */ +/* SLJIT_S390X_RIEF(rxsbg, 0xec0000000057) */ + +/* ROTATE THEN OR SELECTED BITS */ +SLJIT_S390X_RIEF(rosbg, 0xec0000000056) + +/* ROTATE THEN INSERT SELECTED BITS */ +/* SLJIT_S390X_RIEF(risbg, 0xec0000000055) */ +/* SLJIT_S390X_RIEF(risbgn, 0xec0000000059) */ + +/* ROTATE THEN INSERT SELECTED BITS HIGH */ +SLJIT_S390X_RIEF(risbhg, 0xec000000005d) + +/* ROTATE THEN INSERT SELECTED BITS LOW */ +/* SLJIT_S390X_RIEF(risblg, 0xec0000000051) */ + +#undef SLJIT_S390X_RIEF + +/* RRF-a instructions */ +#define SLJIT_S390X_RRFA(name, pattern, cond) \ +SLJIT_S390X_INSTRUCTION(name, sljit_gpr dst, sljit_gpr src1, sljit_gpr src2) \ +{ \ + sljit_ins r1, r2, r3; \ +\ + SLJIT_ASSERT(cond); \ + r1 = (sljit_ins)(dst & 0xf) << 4; \ + r2 = (sljit_ins)(src1 & 0xf); \ + r3 = (sljit_ins)(src2 & 0xf) << 12; \ +\ + return (pattern) | r3 | r1 | r2; \ +} + +/* MULTIPLY */ +SLJIT_S390X_RRFA(msrkc, 0xb9fd0000, have_misc2()) +SLJIT_S390X_RRFA(msgrkc, 0xb9ed0000, have_misc2()) + +#undef SLJIT_S390X_RRFA + +/* RRF-c instructions (require load/store-on-condition 1 facility) */ +#define SLJIT_S390X_RRFC(name, pattern) \ +SLJIT_S390X_INSTRUCTION(name, sljit_gpr dst, sljit_gpr src, sljit_uw mask) \ +{ \ + sljit_ins r1, r2, m3; \ +\ + SLJIT_ASSERT(have_lscond1()); \ + r1 = (sljit_ins)(dst & 0xf) << 4; \ + r2 = (sljit_ins)(src & 0xf); \ + m3 = (sljit_ins)(mask & 0xf) << 12; \ +\ + return (pattern) | m3 | r1 | r2; \ +} + +/* LOAD HALFWORD IMMEDIATE ON CONDITION */ +SLJIT_S390X_RRFC(locr, 0xb9f20000) +SLJIT_S390X_RRFC(locgr, 0xb9e20000) + +#undef SLJIT_S390X_RRFC + +/* RIE-g instructions (require load/store-on-condition 2 facility) */ +#define SLJIT_S390X_RIEG(name, pattern) \ +SLJIT_S390X_INSTRUCTION(name, sljit_gpr reg, sljit_sw imm, sljit_uw mask) \ +{ \ + sljit_ins r1, m3, i2; \ +\ + SLJIT_ASSERT(have_lscond2()); \ + r1 = (sljit_ins)(reg & 0xf) << 36; \ + m3 = (sljit_ins)(mask & 0xf) << 32; \ + i2 = (sljit_ins)(imm & 0xffffL) << 16; \ +\ + return (pattern) | r1 | m3 | i2; \ +} + +/* LOAD HALFWORD IMMEDIATE ON CONDITION */ +SLJIT_S390X_RIEG(lochi, 0xec0000000042) +SLJIT_S390X_RIEG(locghi, 0xec0000000046) + +#undef SLJIT_S390X_RIEG + +#define SLJIT_S390X_RILB(name, pattern, cond) \ +SLJIT_S390X_INSTRUCTION(name, sljit_gpr reg, sljit_sw ri) \ +{ \ + sljit_ins r1, ri2; \ +\ + SLJIT_ASSERT(cond); \ + r1 = (sljit_ins)(reg & 0xf) << 36; \ + ri2 = (sljit_ins)(ri & 0xffffffff); \ +\ + return (pattern) | r1 | ri2; \ +} + +/* BRANCH RELATIVE AND SAVE LONG */ +SLJIT_S390X_RILB(brasl, 0xc00500000000, 1) + +/* LOAD ADDRESS RELATIVE LONG */ +SLJIT_S390X_RILB(larl, 0xc00000000000, 1) + +/* LOAD RELATIVE LONG */ +SLJIT_S390X_RILB(lgrl, 0xc40800000000, have_genext()) + +#undef SLJIT_S390X_RILB + +SLJIT_S390X_INSTRUCTION(br, sljit_gpr target) +{ + return 0x07f0 | target; +} + +SLJIT_S390X_INSTRUCTION(brcl, sljit_uw mask, sljit_sw target) +{ + sljit_ins m1 = (sljit_ins)(mask & 0xf) << 36; + sljit_ins ri2 = (sljit_ins)target & 0xffffffff; + return 0xc00400000000L | m1 | ri2; +} + +SLJIT_S390X_INSTRUCTION(flogr, sljit_gpr dst, sljit_gpr src) +{ + sljit_ins r1 = ((sljit_ins)dst & 0xf) << 8; + sljit_ins r2 = ((sljit_ins)src & 0xf); + SLJIT_ASSERT(have_eimm()); + return 0xb9830000 | r1 | r2; +} + +/* INSERT PROGRAM MASK */ +SLJIT_S390X_INSTRUCTION(ipm, sljit_gpr dst) +{ + return 0xb2220000 | ((sljit_ins)(dst & 0xf) << 4); +} + +/* ROTATE THEN INSERT SELECTED BITS HIGH (ZERO) */ +SLJIT_S390X_INSTRUCTION(risbhgz, sljit_gpr dst, sljit_gpr src, sljit_u8 start, sljit_u8 end, sljit_u8 rot) +{ + return risbhg(dst, src, start, 0x8 | end, rot); +} + +#undef SLJIT_S390X_INSTRUCTION + +/* load condition code as needed to match type */ +static sljit_s32 push_load_cc(struct sljit_compiler *compiler, sljit_s32 type) +{ + type &= ~SLJIT_I32_OP; + switch (type) { + case SLJIT_ZERO: + case SLJIT_NOT_ZERO: + return push_inst(compiler, cih(flag_r, 0)); + break; + default: + return push_inst(compiler, tmlh(flag_r, 0x3000)); + break; + } + return SLJIT_SUCCESS; +} + +static sljit_s32 push_store_zero_flag(struct sljit_compiler *compiler, sljit_s32 op, sljit_gpr source) +{ + /* insert low 32-bits into high 32-bits of flag register */ + FAIL_IF(push_inst(compiler, risbhgz(flag_r, source, 0, 31, 32))); + if (!(op & SLJIT_I32_OP)) { + /* OR high 32-bits with high 32-bits of flag register */ + return push_inst(compiler, rosbg(flag_r, source, 0, 31, 0)); + } + return SLJIT_SUCCESS; +} + +/* load 64-bit immediate into register without clobbering flags */ +static sljit_s32 push_load_imm_inst(struct sljit_compiler *compiler, sljit_gpr target, sljit_sw v) +{ + /* 4 byte instructions */ + if (is_s16(v)) + return push_inst(compiler, lghi(target, (sljit_s16)v)); + + if ((sljit_uw)v == (v & 0x000000000000ffffU)) + return push_inst(compiler, llill(target, (sljit_u16)v)); + + if ((sljit_uw)v == (v & 0x00000000ffff0000U)) + return push_inst(compiler, llilh(target, (sljit_u16)(v >> 16))); + + if ((sljit_uw)v == (v & 0x0000ffff00000000U)) + return push_inst(compiler, llihl(target, (sljit_u16)(v >> 32))); + + if ((sljit_uw)v == (v & 0xffff000000000000U)) + return push_inst(compiler, llihh(target, (sljit_u16)(v >> 48))); + + /* 6 byte instructions (requires extended immediate facility) */ + if (have_eimm()) { + if (is_s32(v)) + return push_inst(compiler, lgfi(target, (sljit_s32)v)); + + if ((sljit_uw)v == (v & 0x00000000ffffffffU)) + return push_inst(compiler, llilf(target, (sljit_u32)v)); + + if ((sljit_uw)v == (v & 0xffffffff00000000U)) + return push_inst(compiler, llihf(target, (sljit_u32)(v >> 32))); + + FAIL_IF(push_inst(compiler, llilf(target, (sljit_u32)v))); + return push_inst(compiler, iihf(target, (sljit_u32)(v >> 32))); + } + /* TODO(mundaym): instruction sequences that don't use extended immediates */ + abort(); +} + +struct addr { + sljit_gpr base; + sljit_gpr index; + sljit_sw offset; +}; + +/* transform memory operand into D(X,B) form with a signed 20-bit offset */ +static sljit_s32 make_addr_bxy(struct sljit_compiler *compiler, + struct addr *addr, sljit_s32 mem, sljit_sw off, + sljit_gpr tmp /* clobbered, must not be r0 */) +{ + sljit_gpr base = r0; + sljit_gpr index = r0; + + SLJIT_ASSERT(tmp != r0); + if (mem & REG_MASK) + base = gpr(mem & REG_MASK); + + if (mem & OFFS_REG_MASK) { + index = gpr(OFFS_REG(mem)); + if (off != 0) { + /* shift and put the result into tmp */ + SLJIT_ASSERT(0 <= off && off < 64); + FAIL_IF(push_inst(compiler, sllg(tmp, index, off, 0))); + index = tmp; + off = 0; /* clear offset */ + } + } + else if (!is_s20(off)) { + FAIL_IF(push_load_imm_inst(compiler, tmp, off)); + index = tmp; + off = 0; /* clear offset */ + } + addr->base = base; + addr->index = index; + addr->offset = off; + return SLJIT_SUCCESS; +} + +/* transform memory operand into D(X,B) form with an unsigned 12-bit offset */ +static sljit_s32 make_addr_bx(struct sljit_compiler *compiler, + struct addr *addr, sljit_s32 mem, sljit_sw off, + sljit_gpr tmp /* clobbered, must not be r0 */) +{ + sljit_gpr base = r0; + sljit_gpr index = r0; + + SLJIT_ASSERT(tmp != r0); + if (mem & REG_MASK) + base = gpr(mem & REG_MASK); + + if (mem & OFFS_REG_MASK) { + index = gpr(OFFS_REG(mem)); + if (off != 0) { + /* shift and put the result into tmp */ + SLJIT_ASSERT(0 <= off && off < 64); + FAIL_IF(push_inst(compiler, sllg(tmp, index, off, 0))); + index = tmp; + off = 0; /* clear offset */ + } + } + else if (!is_u12(off)) { + FAIL_IF(push_load_imm_inst(compiler, tmp, off)); + index = tmp; + off = 0; /* clear offset */ + } + addr->base = base; + addr->index = index; + addr->offset = off; + return SLJIT_SUCCESS; +} + +#define EVAL(op, r, addr) op(r, addr.offset, addr.index, addr.base) +#define WHEN(cond, r, i1, i2, addr) \ + (cond) ? EVAL(i1, r, addr) : EVAL(i2, r, addr) + +static sljit_s32 load_word(struct sljit_compiler *compiler, sljit_gpr dst, + sljit_s32 src, sljit_sw srcw, + sljit_gpr tmp /* clobbered */, sljit_s32 is_32bit) +{ + struct addr addr; + sljit_ins ins; + + SLJIT_ASSERT(src & SLJIT_MEM); + if (have_ldisp() || !is_32bit) + FAIL_IF(make_addr_bxy(compiler, &addr, src, srcw, tmp)); + else + FAIL_IF(make_addr_bx(compiler, &addr, src, srcw, tmp)); + + if (is_32bit) + ins = WHEN(is_u12(addr.offset), dst, l, ly, addr); + else + ins = lg(dst, addr.offset, addr.index, addr.base); + + return push_inst(compiler, ins); +} + +static sljit_s32 store_word(struct sljit_compiler *compiler, sljit_gpr src, + sljit_s32 dst, sljit_sw dstw, + sljit_gpr tmp /* clobbered */, sljit_s32 is_32bit) +{ + struct addr addr; + sljit_ins ins; + + SLJIT_ASSERT(dst & SLJIT_MEM); + if (have_ldisp() || !is_32bit) + FAIL_IF(make_addr_bxy(compiler, &addr, dst, dstw, tmp)); + else + FAIL_IF(make_addr_bx(compiler, &addr, dst, dstw, tmp)); + + if (is_32bit) + ins = WHEN(is_u12(addr.offset), src, st, sty, addr); + else + ins = stg(src, addr.offset, addr.index, addr.base); + + return push_inst(compiler, ins); +} + +#undef WHEN + +SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler) +{ + struct sljit_label *label; + struct sljit_jump *jump; + struct sljit_s390x_const *const_; + struct sljit_put_label *put_label; + sljit_sw executable_offset; + sljit_uw ins_size = 0; /* instructions */ + sljit_uw pool_size = 0; /* literal pool */ + sljit_uw pad_size; + sljit_uw i, j = 0; + struct sljit_memory_fragment *buf; + void *code, *code_ptr; + sljit_uw *pool, *pool_ptr; + + sljit_uw source; + sljit_sw offset; /* TODO(carenas): only need 32 bit */ + + CHECK_ERROR_PTR(); + CHECK_PTR(check_sljit_generate_code(compiler)); + reverse_buf(compiler); + + /* branch handling */ + label = compiler->labels; + jump = compiler->jumps; + put_label = compiler->put_labels; + + /* TODO(carenas): compiler->executable_size could be calculated + * before to avoid the following loop (except for + * pool_size) + */ + /* calculate the size of the code */ + for (buf = compiler->buf; buf != NULL; buf = buf->next) { + sljit_uw len = buf->used_size / sizeof(sljit_ins); + sljit_ins *ibuf = (sljit_ins *)buf->memory; + for (i = 0; i < len; ++i, ++j) { + sljit_ins ins = ibuf[i]; + + /* TODO(carenas): instruction tag vs size/addr == j + * using instruction tags for const is creative + * but unlike all other architectures, and is not + * done consistently for all other objects. + * This might need reviewing later. + */ + if (ins & sljit_ins_const) { + pool_size += sizeof(*pool); + ins &= ~sljit_ins_const; + } + if (label && label->size == j) { + label->size = ins_size; + label = label->next; + } + if (jump && jump->addr == j) { + if ((jump->flags & SLJIT_REWRITABLE_JUMP) || (jump->flags & JUMP_ADDR)) { + /* encoded: */ + /* brasl %r14, <rel_addr> (or brcl <mask>, <rel_addr>) */ + /* replace with: */ + /* lgrl %r1, <pool_addr> */ + /* bras %r14, %r1 (or bcr <mask>, %r1) */ + pool_size += sizeof(*pool); + ins_size += 2; + } + jump = jump->next; + } + if (put_label && put_label->addr == j) { + pool_size += sizeof(*pool); + put_label = put_label->next; + } + ins_size += sizeof_ins(ins); + } + } + + /* emit trailing label */ + if (label && label->size == j) { + label->size = ins_size; + label = label->next; + } + + SLJIT_ASSERT(!label); + SLJIT_ASSERT(!jump); + SLJIT_ASSERT(!put_label); + + /* pad code size to 8 bytes so is accessible with half word offsets */ + /* the literal pool needs to be doubleword aligned */ + pad_size = ((ins_size + 7UL) & ~7UL) - ins_size; + SLJIT_ASSERT(pad_size < 8UL); + + /* allocate target buffer */ + code = SLJIT_MALLOC_EXEC(ins_size + pad_size + pool_size, + compiler->exec_allocator_data); + PTR_FAIL_WITH_EXEC_IF(code); + code_ptr = code; + executable_offset = SLJIT_EXEC_OFFSET(code); + + /* TODO(carenas): pool is optional, and the ABI recommends it to + * be created before the function code, instead of + * globally; if generated code is too big could + * need offsets bigger than 32bit words and asser() + */ + pool = (sljit_uw *)((sljit_uw)code + ins_size + pad_size); + pool_ptr = pool; + const_ = (struct sljit_s390x_const *)compiler->consts; + + /* update label addresses */ + label = compiler->labels; + while (label) { + label->addr = (sljit_uw)SLJIT_ADD_EXEC_OFFSET( + (sljit_uw)code_ptr + label->size, executable_offset); + label = label->next; + } + + /* reset jumps */ + jump = compiler->jumps; + put_label = compiler->put_labels; + + /* emit the code */ + j = 0; + for (buf = compiler->buf; buf != NULL; buf = buf->next) { + sljit_uw len = buf->used_size / sizeof(sljit_ins); + sljit_ins *ibuf = (sljit_ins *)buf->memory; + for (i = 0; i < len; ++i, ++j) { + sljit_ins ins = ibuf[i]; + if (ins & sljit_ins_const) { + /* clear the const tag */ + ins &= ~sljit_ins_const; + + /* update instruction with relative address of constant */ + source = (sljit_uw)code_ptr; + offset = (sljit_uw)pool_ptr - source; + SLJIT_ASSERT(!(offset & 1)); + offset >>= 1; /* halfword (not byte) offset */ + SLJIT_ASSERT(is_s32(offset)); + ins |= (sljit_ins)offset & 0xffffffff; + + /* update address */ + const_->const_.addr = (sljit_uw)pool_ptr; + + /* store initial value into pool and update pool address */ + *(pool_ptr++) = const_->init_value; + + /* move to next constant */ + const_ = (struct sljit_s390x_const *)const_->const_.next; + } + if (jump && jump->addr == j) { + sljit_sw target = (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target; + if ((jump->flags & SLJIT_REWRITABLE_JUMP) || (jump->flags & JUMP_ADDR)) { + jump->addr = (sljit_uw)pool_ptr; + + /* load address into tmp1 */ + source = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset); + offset = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(pool_ptr, executable_offset) - source; + SLJIT_ASSERT(!(offset & 1)); + offset >>= 1; + SLJIT_ASSERT(is_s32(offset)); + encode_inst(&code_ptr, + lgrl(tmp1, offset & 0xffffffff)); + + /* store jump target into pool and update pool address */ + *(pool_ptr++) = target; + + /* branch to tmp1 */ + sljit_ins op = (ins >> 32) & 0xf; + sljit_ins arg = (ins >> 36) & 0xf; + switch (op) { + case 4: /* brcl -> bcr */ + ins = bcr(arg, tmp1); + break; + case 5: /* brasl -> basr */ + ins = basr(arg, tmp1); + break; + default: + abort(); + } + } + else { + jump->addr = (sljit_uw)code_ptr + 2; + source = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset); + offset = target - source; + + /* offset must be halfword aligned */ + SLJIT_ASSERT(!(offset & 1)); + offset >>= 1; + SLJIT_ASSERT(is_s32(offset)); /* TODO(mundaym): handle arbitrary offsets */ + + /* patch jump target */ + ins |= (sljit_ins)offset & 0xffffffff; + } + jump = jump->next; + } + if (put_label && put_label->addr == j) { + source = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset); + + SLJIT_ASSERT(put_label->label); + put_label->addr = (sljit_uw)code_ptr; + + /* store target into pool */ + *pool_ptr = put_label->label->addr; + offset = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(pool_ptr, executable_offset) - source; + pool_ptr++; + + SLJIT_ASSERT(!(offset & 1)); + offset >>= 1; + SLJIT_ASSERT(is_s32(offset)); + ins |= (sljit_ins)offset & 0xffffffff; + + put_label = put_label->next; + } + encode_inst(&code_ptr, ins); + } + } + SLJIT_ASSERT((sljit_u8 *)code + ins_size == code_ptr); + SLJIT_ASSERT((sljit_u8 *)pool + pool_size == (sljit_u8 *)pool_ptr); + + compiler->error = SLJIT_ERR_COMPILED; + compiler->executable_offset = executable_offset; + compiler->executable_size = ins_size; + code = SLJIT_ADD_EXEC_OFFSET(code, executable_offset); + code_ptr = SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset); + SLJIT_CACHE_FLUSH(code, code_ptr); + SLJIT_UPDATE_WX_FLAGS(code, code_ptr, 1); + return code; +} + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_has_cpu_feature(sljit_s32 feature_type) +{ + /* TODO(mundaym): implement all */ + switch (feature_type) { + case SLJIT_HAS_CLZ: + return have_eimm() ? 1 : 0; /* FLOGR instruction */ + case SLJIT_HAS_CMOV: + return have_lscond1() ? 1 : 0; + case SLJIT_HAS_FPU: + return 0; + } + return 0; +} + +/* --------------------------------------------------------------------- */ +/* Entry, exit */ +/* --------------------------------------------------------------------- */ + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compiler, + sljit_s32 options, sljit_s32 arg_types, sljit_s32 scratches, sljit_s32 saveds, + sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size) +{ + sljit_s32 args = get_arg_count(arg_types); + sljit_sw frame_size; + + CHECK_ERROR(); + CHECK(check_sljit_emit_enter(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size)); + set_emit_enter(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size); + + /* saved registers go in callee allocated save area */ + compiler->local_size = (local_size + 0xf) & ~0xf; + frame_size = compiler->local_size + SLJIT_S390X_DEFAULT_STACK_FRAME_SIZE; + + FAIL_IF(push_inst(compiler, stmg(r6, r15, r6 * sizeof(sljit_sw), r15))); /* save registers TODO(MGM): optimize */ + if (frame_size != 0) { + if (is_s16(-frame_size)) + FAIL_IF(push_inst(compiler, aghi(r15, -((sljit_s16)frame_size)))); + else if (is_s32(-frame_size)) + FAIL_IF(push_inst(compiler, agfi(r15, -((sljit_s32)frame_size)))); + else { + FAIL_IF(push_load_imm_inst(compiler, tmp1, -frame_size)); + FAIL_IF(push_inst(compiler, la(r15, 0, tmp1, r15))); + } + } + + if (args >= 1) + FAIL_IF(push_inst(compiler, lgr(gpr(SLJIT_S0), gpr(SLJIT_R0)))); + if (args >= 2) + FAIL_IF(push_inst(compiler, lgr(gpr(SLJIT_S1), gpr(SLJIT_R1)))); + if (args >= 3) + FAIL_IF(push_inst(compiler, lgr(gpr(SLJIT_S2), gpr(SLJIT_R2)))); + SLJIT_ASSERT(args < 4); + + return SLJIT_SUCCESS; +} + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_set_context(struct sljit_compiler *compiler, + sljit_s32 options, sljit_s32 arg_types, sljit_s32 scratches, sljit_s32 saveds, + sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size) +{ + CHECK_ERROR(); + CHECK(check_sljit_set_context(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size)); + set_set_context(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size); + + /* TODO(mundaym): stack space for saved floating point registers */ + compiler->local_size = (local_size + 0xf) & ~0xf; + return SLJIT_SUCCESS; +} + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 src, sljit_sw srcw) +{ + sljit_sw size; + sljit_gpr end; + + CHECK_ERROR(); + CHECK(check_sljit_emit_return(compiler, op, src, srcw)); + + FAIL_IF(emit_mov_before_return(compiler, op, src, srcw)); + + size = compiler->local_size + SLJIT_S390X_DEFAULT_STACK_FRAME_SIZE + (r6 * sizeof(sljit_sw)); + if (!is_s20(size)) { + FAIL_IF(push_load_imm_inst(compiler, tmp1, compiler->local_size + SLJIT_S390X_DEFAULT_STACK_FRAME_SIZE)); + FAIL_IF(push_inst(compiler, la(r15, 0, tmp1, r15))); + size = r6 * sizeof(sljit_sw); + end = r14; /* r15 has been restored already */ + } + else + end = r15; + + FAIL_IF(push_inst(compiler, lmg(r6, end, size, r15))); /* restore registers TODO(MGM): optimize */ + FAIL_IF(push_inst(compiler, br(r14))); /* return */ + + return SLJIT_SUCCESS; +} + +/* --------------------------------------------------------------------- */ +/* Operators */ +/* --------------------------------------------------------------------- */ + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op0(struct sljit_compiler *compiler, sljit_s32 op) +{ + sljit_gpr arg0 = gpr(SLJIT_R0); + sljit_gpr arg1 = gpr(SLJIT_R1); + + CHECK_ERROR(); + CHECK(check_sljit_emit_op0(compiler, op)); + + op = GET_OPCODE(op) | (op & SLJIT_I32_OP); + switch (op) { + case SLJIT_BREAKPOINT: + /* TODO(mundaym): insert real breakpoint? */ + case SLJIT_NOP: + return push_inst(compiler, 0x0700 /* 2-byte nop */); + case SLJIT_LMUL_UW: + FAIL_IF(push_inst(compiler, mlgr(arg0, arg0))); + break; + case SLJIT_LMUL_SW: + /* signed multiplication from: */ + /* Hacker's Delight, Second Edition: Chapter 8-3. */ + FAIL_IF(push_inst(compiler, srag(tmp0, arg0, 63, 0))); + FAIL_IF(push_inst(compiler, srag(tmp1, arg1, 63, 0))); + FAIL_IF(push_inst(compiler, ngr(tmp0, arg1))); + FAIL_IF(push_inst(compiler, ngr(tmp1, arg0))); + + /* unsigned multiplication */ + FAIL_IF(push_inst(compiler, mlgr(arg0, arg0))); + + FAIL_IF(push_inst(compiler, sgr(arg0, tmp0))); + FAIL_IF(push_inst(compiler, sgr(arg0, tmp1))); + break; + case SLJIT_DIV_U32: + case SLJIT_DIVMOD_U32: + FAIL_IF(push_inst(compiler, lhi(tmp0, 0))); + FAIL_IF(push_inst(compiler, lr(tmp1, arg0))); + FAIL_IF(push_inst(compiler, dlr(tmp0, arg1))); + FAIL_IF(push_inst(compiler, lr(arg0, tmp1))); /* quotient */ + if (op == SLJIT_DIVMOD_U32) + return push_inst(compiler, lr(arg1, tmp0)); /* remainder */ + + return SLJIT_SUCCESS; + case SLJIT_DIV_S32: + case SLJIT_DIVMOD_S32: + FAIL_IF(push_inst(compiler, lhi(tmp0, 0))); + FAIL_IF(push_inst(compiler, lr(tmp1, arg0))); + FAIL_IF(push_inst(compiler, dr(tmp0, arg1))); + FAIL_IF(push_inst(compiler, lr(arg0, tmp1))); /* quotient */ + if (op == SLJIT_DIVMOD_S32) + return push_inst(compiler, lr(arg1, tmp0)); /* remainder */ + + return SLJIT_SUCCESS; + case SLJIT_DIV_UW: + case SLJIT_DIVMOD_UW: + FAIL_IF(push_inst(compiler, lghi(tmp0, 0))); + FAIL_IF(push_inst(compiler, lgr(tmp1, arg0))); + FAIL_IF(push_inst(compiler, dlgr(tmp0, arg1))); + FAIL_IF(push_inst(compiler, lgr(arg0, tmp1))); /* quotient */ + if (op == SLJIT_DIVMOD_UW) + return push_inst(compiler, lgr(arg1, tmp0)); /* remainder */ + + return SLJIT_SUCCESS; + case SLJIT_DIV_SW: + case SLJIT_DIVMOD_SW: + FAIL_IF(push_inst(compiler, lgr(tmp1, arg0))); + FAIL_IF(push_inst(compiler, dsgr(tmp0, arg1))); + FAIL_IF(push_inst(compiler, lgr(arg0, tmp1))); /* quotient */ + if (op == SLJIT_DIVMOD_SW) + return push_inst(compiler, lgr(arg1, tmp0)); /* remainder */ + + return SLJIT_SUCCESS; + case SLJIT_ENDBR: + return SLJIT_SUCCESS; + case SLJIT_SKIP_FRAMES_BEFORE_RETURN: + return SLJIT_SUCCESS; + default: + SLJIT_UNREACHABLE(); + } + /* swap result registers */ + FAIL_IF(push_inst(compiler, lgr(tmp0, arg0))); + FAIL_IF(push_inst(compiler, lgr(arg0, arg1))); + return push_inst(compiler, lgr(arg1, tmp0)); +} + +/* LEVAL will be defined later with different parameters as needed */ +#define WHEN2(cond, i1, i2) (cond) ? LEVAL(i1) : LEVAL(i2) + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op1(struct sljit_compiler *compiler, sljit_s32 op, + sljit_s32 dst, sljit_sw dstw, + sljit_s32 src, sljit_sw srcw) +{ + sljit_ins ins; + struct addr mem; + sljit_gpr dst_r; + sljit_gpr src_r; + sljit_s32 opcode = GET_OPCODE(op); + + CHECK_ERROR(); + CHECK(check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw)); + ADJUST_LOCAL_OFFSET(dst, dstw); + ADJUST_LOCAL_OFFSET(src, srcw); + + if ((dst == SLJIT_UNUSED) && !HAS_FLAGS(op)) { + /* TODO(carenas): implement prefetch? */ + return SLJIT_SUCCESS; + } + if (opcode >= SLJIT_MOV && opcode <= SLJIT_MOV_P) { + /* LOAD REGISTER */ + if (FAST_IS_REG(dst) && FAST_IS_REG(src)) { + dst_r = gpr(dst); + src_r = gpr(src); + switch (opcode | (op & SLJIT_I32_OP)) { + /* 32-bit */ + case SLJIT_MOV32_U8: + ins = llcr(dst_r, src_r); + break; + case SLJIT_MOV32_S8: + ins = lbr(dst_r, src_r); + break; + case SLJIT_MOV32_U16: + ins = llhr(dst_r, src_r); + break; + case SLJIT_MOV32_S16: + ins = lhr(dst_r, src_r); + break; + case SLJIT_MOV32: + ins = lr(dst_r, src_r); + break; + /* 64-bit */ + case SLJIT_MOV_U8: + ins = llgcr(dst_r, src_r); + break; + case SLJIT_MOV_S8: + ins = lgbr(dst_r, src_r); + break; + case SLJIT_MOV_U16: + ins = llghr(dst_r, src_r); + break; + case SLJIT_MOV_S16: + ins = lghr(dst_r, src_r); + break; + case SLJIT_MOV_U32: + ins = llgfr(dst_r, src_r); + break; + case SLJIT_MOV_S32: + ins = lgfr(dst_r, src_r); + break; + case SLJIT_MOV: + case SLJIT_MOV_P: + ins = lgr(dst_r, src_r); + break; + default: + ins = 0; + SLJIT_UNREACHABLE(); + } + FAIL_IF(push_inst(compiler, ins)); + if (HAS_FLAGS(op)) { + /* only handle zero flag */ + SLJIT_ASSERT(!(op & VARIABLE_FLAG_MASK)); + return push_store_zero_flag(compiler, op, dst_r); + } + return SLJIT_SUCCESS; + } + /* LOAD IMMEDIATE */ + if (FAST_IS_REG(dst) && (src & SLJIT_IMM)) { + switch (opcode) { + case SLJIT_MOV_U8: + srcw = (sljit_sw)((sljit_u8)(srcw)); + break; + case SLJIT_MOV_S8: + srcw = (sljit_sw)((sljit_s8)(srcw)); + break; + case SLJIT_MOV_U16: + srcw = (sljit_sw)((sljit_u16)(srcw)); + break; + case SLJIT_MOV_S16: + srcw = (sljit_sw)((sljit_s16)(srcw)); + break; + case SLJIT_MOV_U32: + srcw = (sljit_sw)((sljit_u32)(srcw)); + break; + case SLJIT_MOV_S32: + srcw = (sljit_sw)((sljit_s32)(srcw)); + break; + } + return push_load_imm_inst(compiler, gpr(dst), srcw); + } + /* LOAD */ + /* TODO(carenas): avoid reg being defined later */ + #define LEVAL(i) EVAL(i, reg, mem) + if (FAST_IS_REG(dst) && (src & SLJIT_MEM)) { + sljit_gpr reg = gpr(dst); + + FAIL_IF(make_addr_bxy(compiler, &mem, src, srcw, tmp1)); + /* TODO(carenas): convert all calls below to LEVAL */ + switch (opcode | (op & SLJIT_I32_OP)) { + case SLJIT_MOV32_U8: + ins = llc(reg, mem.offset, mem.index, mem.base); + break; + case SLJIT_MOV32_S8: + ins = lb(reg, mem.offset, mem.index, mem.base); + break; + case SLJIT_MOV32_U16: + ins = llh(reg, mem.offset, mem.index, mem.base); + break; + case SLJIT_MOV32_S16: + ins = WHEN2(is_u12(mem.offset), lh, lhy); + break; + case SLJIT_MOV32: + ins = WHEN2(is_u12(mem.offset), l, ly); + break; + case SLJIT_MOV_U8: + ins = LEVAL(llgc); + break; + case SLJIT_MOV_S8: + ins = lgb(reg, mem.offset, mem.index, mem.base); + break; + case SLJIT_MOV_U16: + ins = LEVAL(llgh); + break; + case SLJIT_MOV_S16: + ins = lgh(reg, mem.offset, mem.index, mem.base); + break; + case SLJIT_MOV_U32: + ins = LEVAL(llgf); + break; + case SLJIT_MOV_S32: + ins = lgf(reg, mem.offset, mem.index, mem.base); + break; + case SLJIT_MOV_P: + case SLJIT_MOV: + ins = lg(reg, mem.offset, mem.index, mem.base); + break; + default: + SLJIT_UNREACHABLE(); + } + FAIL_IF(push_inst(compiler, ins)); + if (HAS_FLAGS(op)) { + /* only handle zero flag */ + SLJIT_ASSERT(!(op & VARIABLE_FLAG_MASK)); + return push_store_zero_flag(compiler, op, reg); + } + return SLJIT_SUCCESS; + } + /* STORE and STORE IMMEDIATE */ + if ((dst & SLJIT_MEM) + && (FAST_IS_REG(src) || (src & SLJIT_IMM))) { + sljit_gpr reg = FAST_IS_REG(src) ? gpr(src) : tmp0; + if (src & SLJIT_IMM) { + /* TODO(mundaym): MOVE IMMEDIATE? */ + FAIL_IF(push_load_imm_inst(compiler, reg, srcw)); + } + struct addr mem; + FAIL_IF(make_addr_bxy(compiler, &mem, dst, dstw, tmp1)); + switch (opcode) { + case SLJIT_MOV_U8: + case SLJIT_MOV_S8: + return push_inst(compiler, + WHEN2(is_u12(mem.offset), stc, stcy)); + case SLJIT_MOV_U16: + case SLJIT_MOV_S16: + return push_inst(compiler, + WHEN2(is_u12(mem.offset), sth, sthy)); + case SLJIT_MOV_U32: + case SLJIT_MOV_S32: + return push_inst(compiler, + WHEN2(is_u12(mem.offset), st, sty)); + case SLJIT_MOV_P: + case SLJIT_MOV: + FAIL_IF(push_inst(compiler, LEVAL(stg))); + if (HAS_FLAGS(op)) { + /* only handle zero flag */ + SLJIT_ASSERT(!(op & VARIABLE_FLAG_MASK)); + return push_store_zero_flag(compiler, op, reg); + } + return SLJIT_SUCCESS; + default: + SLJIT_UNREACHABLE(); + } + } + #undef LEVAL + /* MOVE CHARACTERS */ + if ((dst & SLJIT_MEM) && (src & SLJIT_MEM)) { + struct addr mem; + FAIL_IF(make_addr_bxy(compiler, &mem, src, srcw, tmp1)); + switch (opcode) { + case SLJIT_MOV_U8: + case SLJIT_MOV_S8: + FAIL_IF(push_inst(compiler, + EVAL(llgc, tmp0, mem))); + FAIL_IF(make_addr_bxy(compiler, &mem, dst, dstw, tmp1)); + return push_inst(compiler, + EVAL(stcy, tmp0, mem)); + case SLJIT_MOV_U16: + case SLJIT_MOV_S16: + FAIL_IF(push_inst(compiler, + EVAL(llgh, tmp0, mem))); + FAIL_IF(make_addr_bxy(compiler, &mem, dst, dstw, tmp1)); + return push_inst(compiler, + EVAL(sthy, tmp0, mem)); + case SLJIT_MOV_U32: + case SLJIT_MOV_S32: + FAIL_IF(push_inst(compiler, + EVAL(ly, tmp0, mem))); + FAIL_IF(make_addr_bxy(compiler, &mem, dst, dstw, tmp1)); + return push_inst(compiler, + EVAL(sty, tmp0, mem)); + case SLJIT_MOV_P: + case SLJIT_MOV: + FAIL_IF(push_inst(compiler, + EVAL(lg, tmp0, mem))); + FAIL_IF(make_addr_bxy(compiler, &mem, dst, dstw, tmp1)); + FAIL_IF(push_inst(compiler, + EVAL(stg, tmp0, mem))); + if (HAS_FLAGS(op)) { + /* only handle zero flag */ + SLJIT_ASSERT(!(op & VARIABLE_FLAG_MASK)); + return push_store_zero_flag(compiler, op, tmp0); + } + return SLJIT_SUCCESS; + default: + SLJIT_UNREACHABLE(); + } + } + SLJIT_UNREACHABLE(); + } + + SLJIT_ASSERT((src & SLJIT_IMM) == 0); /* no immediates */ + + dst_r = SLOW_IS_REG(dst) ? gpr(REG_MASK & dst) : tmp0; + src_r = FAST_IS_REG(src) ? gpr(REG_MASK & src) : tmp0; + if (src & SLJIT_MEM) + FAIL_IF(load_word(compiler, src_r, src, srcw, tmp1, src & SLJIT_I32_OP)); + + /* TODO(mundaym): optimize loads and stores */ + switch (opcode | (op & SLJIT_I32_OP)) { + case SLJIT_NOT: + /* emulate ~x with x^-1 */ + FAIL_IF(push_load_imm_inst(compiler, tmp1, -1)); + if (src_r != dst_r) + FAIL_IF(push_inst(compiler, lgr(dst_r, src_r))); + + FAIL_IF(push_inst(compiler, xgr(dst_r, tmp1))); + break; + case SLJIT_NOT32: + /* emulate ~x with x^-1 */ + if (have_eimm()) + FAIL_IF(push_inst(compiler, xilf(dst_r, -1))); + else { + FAIL_IF(push_load_imm_inst(compiler, tmp1, -1)); + if (src_r != dst_r) + FAIL_IF(push_inst(compiler, lr(dst_r, src_r))); + + FAIL_IF(push_inst(compiler, xr(dst_r, tmp1))); + } + break; + case SLJIT_NEG: + FAIL_IF(push_inst(compiler, lcgr(dst_r, src_r))); + break; + case SLJIT_NEG32: + FAIL_IF(push_inst(compiler, lcr(dst_r, src_r))); + break; + case SLJIT_CLZ: + if (have_eimm()) { + FAIL_IF(push_inst(compiler, flogr(tmp0, src_r))); /* clobbers tmp1 */ + if (dst_r != tmp0) + FAIL_IF(push_inst(compiler, lgr(dst_r, tmp0))); + } else { + abort(); /* TODO(mundaym): no eimm (?) */ + } + break; + case SLJIT_CLZ32: + if (have_eimm()) { + FAIL_IF(push_inst(compiler, sllg(tmp1, src_r, 32, 0))); + FAIL_IF(push_inst(compiler, iilf(tmp1, 0xffffffff))); + FAIL_IF(push_inst(compiler, flogr(tmp0, tmp1))); /* clobbers tmp1 */ + if (dst_r != tmp0) + FAIL_IF(push_inst(compiler, lr(dst_r, tmp0))); + } else { + abort(); /* TODO(mundaym): no eimm (?) */ + } + break; + default: + SLJIT_UNREACHABLE(); + } + + /* write condition code to emulated flag register */ + if (op & VARIABLE_FLAG_MASK) + FAIL_IF(push_inst(compiler, ipm(flag_r))); + + /* write zero flag to emulated flag register */ + if (op & SLJIT_SET_Z) + FAIL_IF(push_store_zero_flag(compiler, op, dst_r)); + + /* TODO(carenas): doesn't need FAIL_IF */ + if ((dst != SLJIT_UNUSED) && (dst & SLJIT_MEM)) + FAIL_IF(store_word(compiler, dst_r, dst, dstw, tmp1, op & SLJIT_I32_OP)); + + return SLJIT_SUCCESS; +} + +static SLJIT_INLINE int is_commutative(sljit_s32 op) +{ + switch (GET_OPCODE(op)) { + case SLJIT_ADD: + case SLJIT_ADDC: + case SLJIT_MUL: + case SLJIT_AND: + case SLJIT_OR: + case SLJIT_XOR: + return 1; + } + return 0; +} + +static SLJIT_INLINE int is_shift(sljit_s32 op) { + sljit_s32 v = GET_OPCODE(op); + return (v == SLJIT_SHL || v == SLJIT_ASHR || v == SLJIT_LSHR) ? 1 : 0; +} + +static SLJIT_INLINE int sets_signed_flag(sljit_s32 op) +{ + switch (GET_FLAG_TYPE(op)) { + case SLJIT_OVERFLOW: + case SLJIT_NOT_OVERFLOW: + case SLJIT_SIG_LESS: + case SLJIT_SIG_LESS_EQUAL: + case SLJIT_SIG_GREATER: + case SLJIT_SIG_GREATER_EQUAL: + return 1; + } + return 0; +} + +/* Report whether we have an instruction for: + op dst src imm + where dst and src are separate registers. */ +static int have_op_3_imm(sljit_s32 op, sljit_sw imm) { + return 0; /* TODO(mundaym): implement */ +} + +/* Report whether we have an instruction for: + op reg imm + where reg is both a source and the destination. */ +static int have_op_2_imm(sljit_s32 op, sljit_sw imm) { + switch (GET_OPCODE(op) | (op & SLJIT_I32_OP)) { + case SLJIT_ADD32: + case SLJIT_ADD: + if (!HAS_FLAGS(op) || sets_signed_flag(op)) + return have_eimm() ? is_s32(imm) : is_s16(imm); + + return have_eimm() && is_u32(imm); + case SLJIT_MUL32: + case SLJIT_MUL: + /* TODO(mundaym): general extension check */ + /* for ms{,g}fi */ + if (op & VARIABLE_FLAG_MASK) + return 0; + + return have_genext() && is_s16(imm); + case SLJIT_OR32: + case SLJIT_XOR32: + case SLJIT_AND32: + /* only use if have extended immediate facility */ + /* this ensures flags are set correctly */ + return have_eimm(); + case SLJIT_AND: + case SLJIT_OR: + case SLJIT_XOR: + /* TODO(mundaym): make this more flexible */ + /* avoid using immediate variations, flags */ + /* won't be set correctly */ + return 0; + case SLJIT_ADDC32: + case SLJIT_ADDC: + /* no ADD LOGICAL WITH CARRY IMMEDIATE */ + return 0; + case SLJIT_SUB: + case SLJIT_SUB32: + case SLJIT_SUBC: + case SLJIT_SUBC32: + /* no SUBTRACT IMMEDIATE */ + /* TODO(mundaym): SUBTRACT LOGICAL IMMEDIATE */ + return 0; + } + return 0; +} + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op2(struct sljit_compiler *compiler, sljit_s32 op, + sljit_s32 dst, sljit_sw dstw, + sljit_s32 src1, sljit_sw src1w, + sljit_s32 src2, sljit_sw src2w) +{ + CHECK_ERROR(); + CHECK(check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w)); + ADJUST_LOCAL_OFFSET(dst, dstw); + ADJUST_LOCAL_OFFSET(src1, src1w); + ADJUST_LOCAL_OFFSET(src2, src2w); + + if (dst == SLJIT_UNUSED && !HAS_FLAGS(op)) + return SLJIT_SUCCESS; + + sljit_gpr dst_r = SLOW_IS_REG(dst) ? gpr(dst & REG_MASK) : tmp0; + + if (is_commutative(op)) { + #define SWAP_ARGS \ + do { \ + sljit_s32 t = src1; \ + sljit_sw tw = src1w; \ + src1 = src2; \ + src1w = src2w; \ + src2 = t; \ + src2w = tw; \ + } while(0); + + /* prefer immediate in src2 */ + if (src1 & SLJIT_IMM) { + SWAP_ARGS + } + + /* prefer to have src1 use same register as dst */ + if (FAST_IS_REG(src2) && gpr(src2 & REG_MASK) == dst_r) { + SWAP_ARGS + } + + /* prefer memory argument in src2 */ + if (FAST_IS_REG(src2) && (src1 & SLJIT_MEM)) { + SWAP_ARGS + } + #undef SWAP_ARGS + } + + /* src1 must be in a register */ + sljit_gpr src1_r = FAST_IS_REG(src1) ? gpr(src1 & REG_MASK) : tmp0; + if (src1 & SLJIT_IMM) + FAIL_IF(push_load_imm_inst(compiler, src1_r, src1w)); + + if (src1 & SLJIT_MEM) + FAIL_IF(load_word(compiler, src1_r, src1, src1w, tmp1, op & SLJIT_I32_OP)); + + /* emit comparison before subtract */ + if (GET_OPCODE(op) == SLJIT_SUB && (op & VARIABLE_FLAG_MASK)) { + sljit_sw cmp = 0; + switch (GET_FLAG_TYPE(op)) { + case SLJIT_LESS: + case SLJIT_LESS_EQUAL: + case SLJIT_GREATER: + case SLJIT_GREATER_EQUAL: + cmp = 1; /* unsigned */ + break; + case SLJIT_EQUAL: + case SLJIT_SIG_LESS: + case SLJIT_SIG_LESS_EQUAL: + case SLJIT_SIG_GREATER: + case SLJIT_SIG_GREATER_EQUAL: + cmp = -1; /* signed */ + break; + } + if (cmp) { + /* clear flags - no need to generate now */ + op &= ~VARIABLE_FLAG_MASK; + sljit_gpr src2_r = FAST_IS_REG(src2) ? gpr(src2 & REG_MASK) : tmp1; + if (src2 & SLJIT_IMM) { + #define LEVAL(i) i(src1_r, src2w) + if (cmp > 0 && is_u32(src2w)) { + /* unsigned */ + FAIL_IF(push_inst(compiler, + WHEN2(op & SLJIT_I32_OP, clfi, clgfi))); + } + else if (cmp < 0 && is_s16(src2w)) { + /* signed */ + FAIL_IF(push_inst(compiler, + WHEN2(op & SLJIT_I32_OP, chi, cghi))); + } + else if (cmp < 0 && is_s32(src2w)) { + /* signed */ + FAIL_IF(push_inst(compiler, + WHEN2(op & SLJIT_I32_OP, cfi, cgfi))); + } + #undef LEVAL + #define LEVAL(i) i(src1_r, src2_r) + else { + FAIL_IF(push_load_imm_inst(compiler, src2_r, src2w)); + if (cmp > 0) { + /* unsigned */ + FAIL_IF(push_inst(compiler, + WHEN2(op & SLJIT_I32_OP, clr, clgr))); + } + if (cmp < 0) { + /* signed */ + FAIL_IF(push_inst(compiler, + WHEN2(op & SLJIT_I32_OP, cr, cgr))); + } + } + } + else { + if (src2 & SLJIT_MEM) { + /* TODO(mundaym): comparisons with memory */ + /* load src2 into register */ + FAIL_IF(load_word(compiler, src2_r, src2, src2w, tmp1, op & SLJIT_I32_OP)); + } + if (cmp > 0) { + /* unsigned */ + FAIL_IF(push_inst(compiler, + WHEN2(op & SLJIT_I32_OP, clr, clgr))); + } + if (cmp < 0) { + /* signed */ + FAIL_IF(push_inst(compiler, + WHEN2(op & SLJIT_I32_OP, cr, cgr))); + } + #undef LEVAL + } + FAIL_IF(push_inst(compiler, ipm(flag_r))); + } + } + + if (!HAS_FLAGS(op) && dst == SLJIT_UNUSED) + return SLJIT_SUCCESS; + + /* need to specify signed or logical operation */ + int signed_flags = sets_signed_flag(op); + + if (is_shift(op)) { + /* handle shifts first, they have more constraints than other operations */ + sljit_sw d = 0; + sljit_gpr b = FAST_IS_REG(src2) ? gpr(src2 & REG_MASK) : r0; + if (src2 & SLJIT_IMM) + d = src2w & ((op & SLJIT_I32_OP) ? 31 : 63); + + if (src2 & SLJIT_MEM) { + /* shift amount (b) cannot be in r0 (i.e. tmp0) */ + FAIL_IF(load_word(compiler, tmp1, src2, src2w, tmp1, op & SLJIT_I32_OP)); + b = tmp1; + } + /* src1 and dst share the same register in the base 32-bit ISA */ + /* TODO(mundaym): not needed when distinct-operand facility is available */ + int workaround_alias = op & SLJIT_I32_OP && src1_r != dst_r; + if (workaround_alias) { + /* put src1 into tmp0 so we can overwrite it */ + FAIL_IF(push_inst(compiler, lr(tmp0, src1_r))); + src1_r = tmp0; + } + switch (GET_OPCODE(op) | (op & SLJIT_I32_OP)) { + case SLJIT_SHL: + FAIL_IF(push_inst(compiler, sllg(dst_r, src1_r, d, b))); + break; + case SLJIT_SHL32: + FAIL_IF(push_inst(compiler, sll(src1_r, d, b))); + break; + case SLJIT_LSHR: + FAIL_IF(push_inst(compiler, srlg(dst_r, src1_r, d, b))); + break; + case SLJIT_LSHR32: + FAIL_IF(push_inst(compiler, srl(src1_r, d, b))); + break; + case SLJIT_ASHR: + FAIL_IF(push_inst(compiler, srag(dst_r, src1_r, d, b))); + break; + case SLJIT_ASHR32: + FAIL_IF(push_inst(compiler, sra(src1_r, d, b))); + break; + default: + SLJIT_UNREACHABLE(); + } + if (workaround_alias && dst_r != src1_r) + FAIL_IF(push_inst(compiler, lr(dst_r, src1_r))); + + } + else if ((GET_OPCODE(op) == SLJIT_MUL) && HAS_FLAGS(op)) { + /* multiply instructions do not generally set flags so we need to manually */ + /* detect overflow conditions */ + /* TODO(mundaym): 64-bit overflow */ + SLJIT_ASSERT(GET_FLAG_TYPE(op) == SLJIT_MUL_OVERFLOW || + GET_FLAG_TYPE(op) == SLJIT_MUL_NOT_OVERFLOW); + sljit_gpr src2_r = FAST_IS_REG(src2) ? gpr(src2 & REG_MASK) : tmp1; + if (src2 & SLJIT_IMM) { + /* load src2 into register */ + FAIL_IF(push_load_imm_inst(compiler, src2_r, src2w)); + } + if (src2 & SLJIT_MEM) { + /* load src2 into register */ + FAIL_IF(load_word(compiler, src2_r, src2, src2w, tmp1, op & SLJIT_I32_OP)); + } + if (have_misc2()) { + #define LEVAL(i) i(dst_r, src1_r, src2_r) + FAIL_IF(push_inst(compiler, + WHEN2(op & SLJIT_I32_OP, msrkc, msgrkc))); + #undef LEVAL + } + else if (op & SLJIT_I32_OP) { + op &= ~VARIABLE_FLAG_MASK; + FAIL_IF(push_inst(compiler, lgfr(tmp0, src1_r))); + FAIL_IF(push_inst(compiler, msgfr(tmp0, src2_r))); + if (dst_r != tmp0) { + FAIL_IF(push_inst(compiler, lr(dst_r, tmp0))); + } + FAIL_IF(push_inst(compiler, aih(tmp0, 1))); + FAIL_IF(push_inst(compiler, nihf(tmp0, ~1U))); + FAIL_IF(push_inst(compiler, ipm(flag_r))); + FAIL_IF(push_inst(compiler, oilh(flag_r, 0x2000))); + } + else + return SLJIT_ERR_UNSUPPORTED; + + } + else if ((GET_OPCODE(op) == SLJIT_SUB) && (op & SLJIT_SET_Z) && !signed_flags) { + /* subtract logical instructions do not set the right flags unfortunately */ + /* instead, negate src2 and issue an add logical */ + /* TODO(mundaym): distinct operand facility where needed */ + if (src1_r != dst_r && src1_r != tmp0) { + #define LEVAL(i) i(tmp0, src1_r) + FAIL_IF(push_inst(compiler, + WHEN2(op & SLJIT_I32_OP, lr, lgr))); + src1_r = tmp0; + #undef LEVAL + } + sljit_gpr src2_r = FAST_IS_REG(src2) ? gpr(src2 & REG_MASK) : tmp1; + if (src2 & SLJIT_IMM) { + /* load src2 into register */ + FAIL_IF(push_load_imm_inst(compiler, src2_r, src2w)); + } + if (src2 & SLJIT_MEM) { + /* load src2 into register */ + FAIL_IF(load_word(compiler, src2_r, src2, src2w, tmp1, op & SLJIT_I32_OP)); + } + if (op & SLJIT_I32_OP) { + FAIL_IF(push_inst(compiler, lcr(tmp1, src2_r))); + FAIL_IF(push_inst(compiler, alr(src1_r, tmp1))); + if (src1_r != dst_r) + FAIL_IF(push_inst(compiler, lr(dst_r, src1_r))); + } + else { + FAIL_IF(push_inst(compiler, lcgr(tmp1, src2_r))); + FAIL_IF(push_inst(compiler, algr(src1_r, tmp1))); + if (src1_r != dst_r) + FAIL_IF(push_inst(compiler, lgr(dst_r, src1_r))); + } + } + else if ((src2 & SLJIT_IMM) && (src1_r == dst_r) && have_op_2_imm(op, src2w)) { + switch (GET_OPCODE(op) | (op & SLJIT_I32_OP)) { + #define LEVAL(i) i(dst_r, src2w) + case SLJIT_ADD: + if (!HAS_FLAGS(op) || signed_flags) { + FAIL_IF(push_inst(compiler, + WHEN2(is_s16(src2w), aghi, agfi))); + } + else + FAIL_IF(push_inst(compiler, LEVAL(algfi))); + + break; + case SLJIT_ADD32: + if (!HAS_FLAGS(op) || signed_flags) + FAIL_IF(push_inst(compiler, + WHEN2(is_s16(src2w), ahi, afi))); + else + FAIL_IF(push_inst(compiler, LEVAL(alfi))); + + break; + #undef LEVAL /* TODO(carenas): move down and refactor? */ + case SLJIT_MUL: + FAIL_IF(push_inst(compiler, mhi(dst_r, src2w))); + break; + case SLJIT_MUL32: + FAIL_IF(push_inst(compiler, mghi(dst_r, src2w))); + break; + case SLJIT_OR32: + FAIL_IF(push_inst(compiler, oilf(dst_r, src2w))); + break; + case SLJIT_XOR32: + FAIL_IF(push_inst(compiler, xilf(dst_r, src2w))); + break; + case SLJIT_AND32: + FAIL_IF(push_inst(compiler, nilf(dst_r, src2w))); + break; + default: + SLJIT_UNREACHABLE(); + } + } + else if ((src2 & SLJIT_IMM) && have_op_3_imm(op, src2w)) { + abort(); /* TODO(mundaym): implement */ + } + else if ((src2 & SLJIT_MEM) && (dst_r == src1_r)) { + /* most 32-bit instructions can only handle 12-bit immediate offsets */ + int need_u12 = !have_ldisp() && + (op & SLJIT_I32_OP) && + (GET_OPCODE(op) != SLJIT_ADDC) && + (GET_OPCODE(op) != SLJIT_SUBC); + struct addr mem; + if (need_u12) + FAIL_IF(make_addr_bx(compiler, &mem, src2, src2w, tmp1)); + else + FAIL_IF(make_addr_bxy(compiler, &mem, src2, src2w, tmp1)); + + int can_u12 = is_u12(mem.offset) ? 1 : 0; + sljit_ins ins = 0; + switch (GET_OPCODE(op) | (op & SLJIT_I32_OP)) { + /* 64-bit ops */ + #define LEVAL(i) EVAL(i, dst_r, mem) + case SLJIT_ADD: + ins = WHEN2(signed_flags, ag, alg); + break; + case SLJIT_SUB: + ins = WHEN2(signed_flags, sg, slg); + break; + case SLJIT_ADDC: + ins = LEVAL(alcg); + break; + case SLJIT_SUBC: + ins = LEVAL(slbg); + break; + case SLJIT_MUL: + ins = LEVAL(msg); + break; + case SLJIT_OR: + ins = LEVAL(og); + break; + case SLJIT_XOR: + ins = LEVAL(xg); + break; + case SLJIT_AND: + ins = LEVAL(ng); + break; + /* 32-bit ops */ + case SLJIT_ADD32: + if (signed_flags) + ins = WHEN2(can_u12, a, ay); + else + ins = WHEN2(can_u12, al, aly); + break; + case SLJIT_SUB32: + if (signed_flags) + ins = WHEN2(can_u12, s, sy); + else + ins = WHEN2(can_u12, sl, sly); + break; + case SLJIT_ADDC32: + ins = LEVAL(alc); + break; + case SLJIT_SUBC32: + ins = LEVAL(slb); + break; + case SLJIT_MUL32: + ins = WHEN2(can_u12, ms, msy); + break; + case SLJIT_OR32: + ins = WHEN2(can_u12, o, oy); + break; + case SLJIT_XOR32: + ins = WHEN2(can_u12, x, xy); + break; + case SLJIT_AND32: + ins = WHEN2(can_u12, n, ny); + break; + #undef LEVAL + default: + SLJIT_UNREACHABLE(); + } + FAIL_IF(push_inst(compiler, ins)); + } + else { + sljit_gpr src2_r = FAST_IS_REG(src2) ? gpr(src2 & REG_MASK) : tmp1; + if (src2 & SLJIT_IMM) { + /* load src2 into register */ + FAIL_IF(push_load_imm_inst(compiler, src2_r, src2w)); + } + if (src2 & SLJIT_MEM) { + /* load src2 into register */ + FAIL_IF(load_word(compiler, src2_r, src2, src2w, tmp1, op & SLJIT_I32_OP)); + } + /* TODO(mundaym): distinct operand facility where needed */ + #define LEVAL(i) i(tmp0, src1_r) + if (src1_r != dst_r && src1_r != tmp0) { + FAIL_IF(push_inst(compiler, + WHEN2(op & SLJIT_I32_OP, lr, lgr))); + src1_r = tmp0; + } + #undef LEVAL + sljit_ins ins = 0; + switch (GET_OPCODE(op) | (op & SLJIT_I32_OP)) { + #define LEVAL(i) i(src1_r, src2_r) + /* 64-bit ops */ + case SLJIT_ADD: + ins = WHEN2(signed_flags, agr, algr); + break; + case SLJIT_SUB: + ins = WHEN2(signed_flags, sgr, slgr); + break; + case SLJIT_ADDC: + ins = LEVAL(alcgr); + break; + case SLJIT_SUBC: + ins = LEVAL(slbgr); + break; + case SLJIT_MUL: + ins = LEVAL(msgr); + break; + case SLJIT_AND: + ins = LEVAL(ngr); + break; + case SLJIT_OR: + ins = LEVAL(ogr); + break; + case SLJIT_XOR: + ins = LEVAL(xgr); + break; + /* 32-bit ops */ + case SLJIT_ADD32: + ins = WHEN2(signed_flags, ar, alr); + break; + case SLJIT_SUB32: + ins = WHEN2(signed_flags, sr, slr); + break; + case SLJIT_ADDC32: + ins = LEVAL(alcr); + break; + case SLJIT_SUBC32: + ins = LEVAL(slbr); + break; + case SLJIT_MUL32: + ins = LEVAL(msr); + break; + case SLJIT_AND32: + ins = LEVAL(nr); + break; + case SLJIT_OR32: + ins = LEVAL(or); + break; + case SLJIT_XOR32: + ins = LEVAL(xr); + break; + #undef LEVAL + default: + SLJIT_UNREACHABLE(); + } + FAIL_IF(push_inst(compiler, ins)); + #define LEVAL(i) i(dst_r, src1_r) + if (src1_r != dst_r) + FAIL_IF(push_inst(compiler, + WHEN2(op & SLJIT_I32_OP, lr, lgr))); + #undef LEVAL + } + + /* write condition code to emulated flag register */ + if (op & VARIABLE_FLAG_MASK) + FAIL_IF(push_inst(compiler, ipm(flag_r))); + + /* write zero flag to emulated flag register */ + if (op & SLJIT_SET_Z) + FAIL_IF(push_store_zero_flag(compiler, op, dst_r)); + + /* finally write the result to memory if required */ + if (dst & SLJIT_MEM) { + SLJIT_ASSERT(dst_r != tmp1); + /* TODO(carenas): s/FAIL_IF/ return */ + FAIL_IF(store_word(compiler, dst_r, dst, dstw, tmp1, op & SLJIT_I32_OP)); + } + + return SLJIT_SUCCESS; +} + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_src( + struct sljit_compiler *compiler, + sljit_s32 op, sljit_s32 src, sljit_sw srcw) +{ + sljit_gpr src_r; + + CHECK_ERROR(); + CHECK(check_sljit_emit_op_src(compiler, op, src, srcw)); + ADJUST_LOCAL_OFFSET(src, srcw); + + switch (op) { + case SLJIT_FAST_RETURN: + src_r = FAST_IS_REG(src) ? gpr(src) : tmp1; + if (src & SLJIT_MEM) + FAIL_IF(load_word(compiler, tmp1, src, srcw, tmp1, 0)); + + return push_inst(compiler, br(src_r)); + case SLJIT_SKIP_FRAMES_BEFORE_FAST_RETURN: + /* TODO(carenas): implement? */ + return SLJIT_SUCCESS; + case SLJIT_PREFETCH_L1: + case SLJIT_PREFETCH_L2: + case SLJIT_PREFETCH_L3: + case SLJIT_PREFETCH_ONCE: + /* TODO(carenas): implement */ + return SLJIT_SUCCESS; + default: + /* TODO(carenas): probably should not success by default */ + return SLJIT_SUCCESS; + } + + return SLJIT_SUCCESS; +} + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_register_index(sljit_s32 reg) +{ + CHECK_REG_INDEX(check_sljit_get_register_index(reg)); + return gpr(reg); +} + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_float_register_index(sljit_s32 reg) +{ + CHECK_REG_INDEX(check_sljit_get_float_register_index(reg)); + abort(); +} + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_custom(struct sljit_compiler *compiler, + void *instruction, sljit_s32 size) +{ + sljit_ins ins = 0; + + CHECK_ERROR(); + CHECK(check_sljit_emit_op_custom(compiler, instruction, size)); + + memcpy((sljit_u8 *)&ins + sizeof(ins) - size, instruction, size); + return push_inst(compiler, ins); +} + +/* --------------------------------------------------------------------- */ +/* Floating point operators */ +/* --------------------------------------------------------------------- */ + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop1(struct sljit_compiler *compiler, sljit_s32 op, + sljit_s32 dst, sljit_sw dstw, + sljit_s32 src, sljit_sw srcw) +{ + CHECK_ERROR(); + abort(); +} + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop2(struct sljit_compiler *compiler, sljit_s32 op, + sljit_s32 dst, sljit_sw dstw, + sljit_s32 src1, sljit_sw src1w, + sljit_s32 src2, sljit_sw src2w) +{ + CHECK_ERROR(); + abort(); +} + +/* --------------------------------------------------------------------- */ +/* Other instructions */ +/* --------------------------------------------------------------------- */ + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_enter(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw) +{ + CHECK_ERROR(); + CHECK(check_sljit_emit_fast_enter(compiler, dst, dstw)); + ADJUST_LOCAL_OFFSET(dst, dstw); + + if (FAST_IS_REG(dst)) + return push_inst(compiler, lgr(gpr(dst), fast_link_r)); + + /* memory */ + return store_word(compiler, fast_link_r, dst, dstw, tmp1, 0); +} + +/* --------------------------------------------------------------------- */ +/* Conditional instructions */ +/* --------------------------------------------------------------------- */ + +SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler) +{ + struct sljit_label *label; + + CHECK_ERROR_PTR(); + CHECK_PTR(check_sljit_emit_label(compiler)); + + if (compiler->last_label && compiler->last_label->size == compiler->size) + return compiler->last_label; + + label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label)); + PTR_FAIL_IF(!label); + set_label(label, compiler); + return label; +} + +SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, sljit_s32 type) +{ + sljit_u8 mask = ((type & 0xff) < SLJIT_JUMP) ? get_cc(type & 0xff) : 0xf; + + CHECK_ERROR_PTR(); + CHECK_PTR(check_sljit_emit_jump(compiler, type)); + + /* reload condition code */ + if (mask != 0xf) + PTR_FAIL_IF(push_load_cc(compiler, type & 0xff)); + + /* record jump */ + struct sljit_jump *jump = (struct sljit_jump *) + ensure_abuf(compiler, sizeof(struct sljit_jump)); + PTR_FAIL_IF(!jump); + set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP); + jump->addr = compiler->size; + + /* emit jump instruction */ + type &= 0xff; + if (type >= SLJIT_FAST_CALL) + PTR_FAIL_IF(push_inst(compiler, brasl(type == SLJIT_FAST_CALL ? fast_link_r : link_r, 0))); + else + PTR_FAIL_IF(push_inst(compiler, brcl(mask, 0))); + + return jump; +} + +SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_call(struct sljit_compiler *compiler, sljit_s32 type, + sljit_s32 arg_types) +{ + CHECK_ERROR_PTR(); + CHECK_PTR(check_sljit_emit_call(compiler, type, arg_types)); + +#if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \ + || (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS) + compiler->skip_checks = 1; +#endif + + return sljit_emit_jump(compiler, type); +} + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_ijump(struct sljit_compiler *compiler, sljit_s32 type, sljit_s32 src, sljit_sw srcw) +{ + sljit_gpr src_r = FAST_IS_REG(src) ? gpr(src) : tmp1; + + CHECK_ERROR(); + CHECK(check_sljit_emit_ijump(compiler, type, src, srcw)); + ADJUST_LOCAL_OFFSET(src, srcw); + + if (src & SLJIT_IMM) { + SLJIT_ASSERT(!(srcw & 1)); /* target address must be even */ + FAIL_IF(push_load_imm_inst(compiler, src_r, srcw)); + } + else if (src & SLJIT_MEM) + FAIL_IF(load_word(compiler, src_r, src, srcw, tmp1, 0 /* 64-bit */)); + + /* emit jump instruction */ + if (type >= SLJIT_FAST_CALL) + return push_inst(compiler, basr(type == SLJIT_FAST_CALL ? fast_link_r : link_r, src_r)); + + return push_inst(compiler, br(src_r)); +} + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_icall(struct sljit_compiler *compiler, sljit_s32 type, + sljit_s32 arg_types, + sljit_s32 src, sljit_sw srcw) +{ + CHECK_ERROR(); + CHECK(check_sljit_emit_icall(compiler, type, arg_types, src, srcw)); + +#if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \ + || (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS) + compiler->skip_checks = 1; +#endif + + return sljit_emit_ijump(compiler, type, src, srcw); +} + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_flags(struct sljit_compiler *compiler, sljit_s32 op, + sljit_s32 dst, sljit_sw dstw, + sljit_s32 type) +{ + sljit_u8 mask = get_cc(type & 0xff); + + CHECK_ERROR(); + CHECK(check_sljit_emit_op_flags(compiler, op, dst, dstw, type)); + + sljit_gpr dst_r = FAST_IS_REG(dst) ? gpr(dst & REG_MASK) : tmp0; + sljit_gpr loc_r = tmp1; + switch (GET_OPCODE(op)) { + case SLJIT_AND: + case SLJIT_OR: + case SLJIT_XOR: + /* dst is also source operand */ + if (dst & SLJIT_MEM) + FAIL_IF(load_word(compiler, dst_r, dst, dstw, tmp1, op & SLJIT_I32_OP)); + + break; + case SLJIT_MOV: + case (SLJIT_MOV32 & ~SLJIT_I32_OP): + /* can write straight into destination */ + loc_r = dst_r; + break; + default: + SLJIT_UNREACHABLE(); + } + + if (mask != 0xf) + FAIL_IF(push_load_cc(compiler, type & 0xff)); + + /* TODO(mundaym): fold into cmov helper function? */ + #define LEVAL(i) i(loc_r, 1, mask) + if (have_lscond2()) { + FAIL_IF(push_load_imm_inst(compiler, loc_r, 0)); + FAIL_IF(push_inst(compiler, + WHEN2(op & SLJIT_I32_OP, lochi, locghi))); + } else { + /* TODO(mundaym): no load/store-on-condition 2 facility (ipm? branch-and-set?) */ + abort(); + } + #undef LEVAL + + /* apply bitwise op and set condition codes */ + switch (GET_OPCODE(op)) { + #define LEVAL(i) i(dst_r, loc_r) + case SLJIT_AND: + FAIL_IF(push_inst(compiler, + WHEN2(op & SLJIT_I32_OP, nr, ngr))); + break; + case SLJIT_OR: + FAIL_IF(push_inst(compiler, + WHEN2(op & SLJIT_I32_OP, or, ogr))); + break; + case SLJIT_XOR: + FAIL_IF(push_inst(compiler, + WHEN2(op & SLJIT_I32_OP, xr, xgr))); + break; + #undef LEVAL + } + + /* set zero flag if needed */ + if (op & SLJIT_SET_Z) + FAIL_IF(push_store_zero_flag(compiler, op, dst_r)); + + /* store result to memory if required */ + /* TODO(carenas): s/FAIL_IF/ return */ + if (dst & SLJIT_MEM) + FAIL_IF(store_word(compiler, dst_r, dst, dstw, tmp1, op & SLJIT_I32_OP)); + + return SLJIT_SUCCESS; +} + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_cmov(struct sljit_compiler *compiler, sljit_s32 type, + sljit_s32 dst_reg, + sljit_s32 src, sljit_sw srcw) +{ + sljit_u8 mask = get_cc(type & 0xff); + sljit_gpr dst_r = gpr(dst_reg & ~SLJIT_I32_OP); + sljit_gpr src_r = FAST_IS_REG(src) ? gpr(src) : tmp0; + + CHECK_ERROR(); + CHECK(check_sljit_emit_cmov(compiler, type, dst_reg, src, srcw)); + + if (mask != 0xf) + FAIL_IF(push_load_cc(compiler, type & 0xff)); + + if (src & SLJIT_IMM) { + /* TODO(mundaym): fast path with lscond2 */ + FAIL_IF(push_load_imm_inst(compiler, src_r, srcw)); + } + + #define LEVAL(i) i(dst_r, src_r, mask) + if (have_lscond1()) + return push_inst(compiler, + WHEN2(dst_reg & SLJIT_I32_OP, locr, locgr)); + + #undef LEVAL + + /* TODO(mundaym): implement */ + return SLJIT_ERR_UNSUPPORTED; +} + +/* --------------------------------------------------------------------- */ +/* Other instructions */ +/* --------------------------------------------------------------------- */ + +/* On s390x we build a literal pool to hold constants. This has two main + advantages: + + 1. we only need one instruction in the instruction stream (LGRL) + 2. we can store 64 bit addresses and use 32 bit offsets + + To retrofit the extra information needed to build the literal pool we + add a new sljit_s390x_const struct that contains the initial value but + can still be cast to a sljit_const. */ + +SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw, sljit_sw init_value) +{ + struct sljit_s390x_const *const_; + sljit_gpr dst_r; + + CHECK_ERROR_PTR(); + CHECK_PTR(check_sljit_emit_const(compiler, dst, dstw, init_value)); + + const_ = (struct sljit_s390x_const*)ensure_abuf(compiler, + sizeof(struct sljit_s390x_const)); + PTR_FAIL_IF(!const_); + set_const((struct sljit_const*)const_, compiler); + const_->init_value = init_value; + + dst_r = FAST_IS_REG(dst) ? gpr(dst & REG_MASK) : tmp0; + if (have_genext()) + PTR_FAIL_IF(push_inst(compiler, sljit_ins_const | lgrl(dst_r, 0))); + else { + PTR_FAIL_IF(push_inst(compiler, sljit_ins_const | larl(tmp1, 0))); + PTR_FAIL_IF(push_inst(compiler, lg(dst_r, 0, r0, tmp1))); + } + + if (dst & SLJIT_MEM) + PTR_FAIL_IF(store_word(compiler, dst_r, dst, dstw, tmp1, 0 /* always 64-bit */)); + + return (struct sljit_const*)const_; +} + +SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_target, sljit_sw executable_offset) +{ + /* Update the constant pool. */ + sljit_uw *ptr = (sljit_uw *)addr; + SLJIT_UNUSED_ARG(executable_offset); + + SLJIT_UPDATE_WX_FLAGS(ptr, ptr + 1, 0); + *ptr = new_target; + SLJIT_UPDATE_WX_FLAGS(ptr, ptr + 1, 1); + SLJIT_CACHE_FLUSH(ptr, ptr + 1); +} + +SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant, sljit_sw executable_offset) +{ + sljit_set_jump_addr(addr, new_constant, executable_offset); +} + +SLJIT_API_FUNC_ATTRIBUTE struct sljit_put_label *sljit_emit_put_label( + struct sljit_compiler *compiler, + sljit_s32 dst, sljit_sw dstw) +{ + struct sljit_put_label *put_label; + sljit_gpr dst_r; + + CHECK_ERROR_PTR(); + CHECK_PTR(check_sljit_emit_put_label(compiler, dst, dstw)); + ADJUST_LOCAL_OFFSET(dst, dstw); + + put_label = (struct sljit_put_label*)ensure_abuf(compiler, sizeof(struct sljit_put_label)); + PTR_FAIL_IF(!put_label); + set_put_label(put_label, compiler, 0); + + dst_r = FAST_IS_REG(dst) ? gpr(dst & REG_MASK) : tmp0; + + if (have_genext()) + PTR_FAIL_IF(push_inst(compiler, lgrl(dst_r, 0))); + else { + PTR_FAIL_IF(push_inst(compiler, larl(tmp1, 0))); + PTR_FAIL_IF(push_inst(compiler, lg(dst_r, 0, r0, tmp1))); + } + + if (dst & SLJIT_MEM) + PTR_FAIL_IF(store_word(compiler, dst_r, dst, dstw, tmp1, 0)); + + return put_label; +} + +/* TODO(carenas): EVAL probably should move up or be refactored */ +#undef WHEN2 +#undef EVAL + +#undef tmp1 +#undef tmp0 + +/* TODO(carenas): undef other macros that spill like is_u12? */ |