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diff --git a/pcre/sljit/sljitLir.h b/pcre/sljit/sljitLir.h new file mode 100644 index 0000000..836d25c --- /dev/null +++ b/pcre/sljit/sljitLir.h @@ -0,0 +1,1493 @@ +/* + * 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. + */ + +#ifndef _SLJIT_LIR_H_ +#define _SLJIT_LIR_H_ + +/* + ------------------------------------------------------------------------ + Stack-Less JIT compiler for multiple architectures (x86, ARM, PowerPC) + ------------------------------------------------------------------------ + + Short description + Advantages: + - The execution can be continued from any LIR instruction. In other + words, it is possible to jump to any label from anywhere, even from + a code fragment, which is compiled later, if both compiled code + shares the same context. See sljit_emit_enter for more details + - Supports self modifying code: target of (conditional) jump and call + instructions and some constant values can be dynamically modified + during runtime + - although it is not suggested to do it frequently + - can be used for inline caching: save an important value once + in the instruction stream + - since this feature limits the optimization possibilities, a + special flag must be passed at compile time when these + instructions are emitted + - A fixed stack space can be allocated for local variables + - The compiler is thread-safe + - The compiler is highly configurable through preprocessor macros. + You can disable unneeded features (multithreading in single + threaded applications), and you can use your own system functions + (including memory allocators). See sljitConfig.h + Disadvantages: + - No automatic register allocation, and temporary results are + not stored on the stack. (hence the name comes) + In practice: + - This approach is very effective for interpreters + - One of the saved registers typically points to a stack interface + - It can jump to any exception handler anytime (even if it belongs + to another function) + - Hot paths can be modified during runtime reflecting the changes + of the fastest execution path of the dynamic language + - SLJIT supports complex memory addressing modes + - mainly position and context independent code (except some cases) + + For valgrind users: + - pass --smc-check=all argument to valgrind, since JIT is a "self-modifying code" +*/ + +#if !(defined SLJIT_NO_DEFAULT_CONFIG && SLJIT_NO_DEFAULT_CONFIG) +#include "sljitConfig.h" +#endif + +/* The following header file defines useful macros for fine tuning +sljit based code generators. They are listed in the beginning +of sljitConfigInternal.h */ + +#include "sljitConfigInternal.h" + +/* --------------------------------------------------------------------- */ +/* Error codes */ +/* --------------------------------------------------------------------- */ + +/* Indicates no error. */ +#define SLJIT_SUCCESS 0 +/* After the call of sljit_generate_code(), the error code of the compiler + is set to this value to avoid future sljit calls (in debug mode at least). + The complier should be freed after sljit_generate_code(). */ +#define SLJIT_ERR_COMPILED 1 +/* Cannot allocate non executable memory. */ +#define SLJIT_ERR_ALLOC_FAILED 2 +/* Cannot allocate executable memory. + Only for sljit_generate_code() */ +#define SLJIT_ERR_EX_ALLOC_FAILED 3 +/* Return value for SLJIT_CONFIG_UNSUPPORTED placeholder architecture. */ +#define SLJIT_ERR_UNSUPPORTED 4 +/* An ivalid argument is passed to any SLJIT function. */ +#define SLJIT_ERR_BAD_ARGUMENT 5 +/* Dynamic code modification is not enabled. */ +#define SLJIT_ERR_DYN_CODE_MOD 6 + +/* --------------------------------------------------------------------- */ +/* Registers */ +/* --------------------------------------------------------------------- */ + +/* + Scratch (R) registers: registers whose may not preserve their values + across function calls. + + Saved (S) registers: registers whose preserve their values across + function calls. + + The scratch and saved register sets are overlap. The last scratch register + is the first saved register, the one before the last is the second saved + register, and so on. + + If an architecture provides two scratch and three saved registers, + its scratch and saved register sets are the following: + + R0 | | R0 is always a scratch register + R1 | | R1 is always a scratch register + [R2] | S2 | R2 and S2 represent the same physical register + [R3] | S1 | R3 and S1 represent the same physical register + [R4] | S0 | R4 and S0 represent the same physical register + + Note: SLJIT_NUMBER_OF_SCRATCH_REGISTERS would be 2 and + SLJIT_NUMBER_OF_SAVED_REGISTERS would be 3 for this architecture. + + Note: On all supported architectures SLJIT_NUMBER_OF_REGISTERS >= 12 + and SLJIT_NUMBER_OF_SAVED_REGISTERS >= 6. However, 6 registers + are virtual on x86-32. See below. + + The purpose of this definition is convenience: saved registers can + be used as extra scratch registers. For example four registers can + be specified as scratch registers and the fifth one as saved register + on the CPU above and any user code which requires four scratch + registers can run unmodified. The SLJIT compiler automatically saves + the content of the two extra scratch register on the stack. Scratch + registers can also be preserved by saving their value on the stack + but this needs to be done manually. + + Note: To emphasize that registers assigned to R2-R4 are saved + registers, they are enclosed by square brackets. + + Note: sljit_emit_enter and sljit_set_context defines whether a register + is S or R register. E.g: when 3 scratches and 1 saved is mapped + by sljit_emit_enter, the allowed register set will be: R0-R2 and + S0. Although S2 is mapped to the same position as R2, it does not + available in the current configuration. Furthermore the S1 register + is not available at all. +*/ + +/* When SLJIT_UNUSED is specified as the destination of sljit_emit_op1 + or sljit_emit_op2 operations the result is discarded. If no status + flags are set, no instructions are emitted for these operations. Data + prefetch is a special exception, see SLJIT_MOV operation. Other SLJIT + operations do not support SLJIT_UNUSED as a destination operand. */ +#define SLJIT_UNUSED 0 + +/* Scratch registers. */ +#define SLJIT_R0 1 +#define SLJIT_R1 2 +#define SLJIT_R2 3 +/* Note: on x86-32, R3 - R6 (same as S3 - S6) are emulated (they + are allocated on the stack). These registers are called virtual + and cannot be used for memory addressing (cannot be part of + any SLJIT_MEM1, SLJIT_MEM2 construct). There is no such + limitation on other CPUs. See sljit_get_register_index(). */ +#define SLJIT_R3 4 +#define SLJIT_R4 5 +#define SLJIT_R5 6 +#define SLJIT_R6 7 +#define SLJIT_R7 8 +#define SLJIT_R8 9 +#define SLJIT_R9 10 +/* All R registers provided by the architecture can be accessed by SLJIT_R(i) + The i parameter must be >= 0 and < SLJIT_NUMBER_OF_REGISTERS. */ +#define SLJIT_R(i) (1 + (i)) + +/* Saved registers. */ +#define SLJIT_S0 (SLJIT_NUMBER_OF_REGISTERS) +#define SLJIT_S1 (SLJIT_NUMBER_OF_REGISTERS - 1) +#define SLJIT_S2 (SLJIT_NUMBER_OF_REGISTERS - 2) +/* Note: on x86-32, S3 - S6 (same as R3 - R6) are emulated (they + are allocated on the stack). These registers are called virtual + and cannot be used for memory addressing (cannot be part of + any SLJIT_MEM1, SLJIT_MEM2 construct). There is no such + limitation on other CPUs. See sljit_get_register_index(). */ +#define SLJIT_S3 (SLJIT_NUMBER_OF_REGISTERS - 3) +#define SLJIT_S4 (SLJIT_NUMBER_OF_REGISTERS - 4) +#define SLJIT_S5 (SLJIT_NUMBER_OF_REGISTERS - 5) +#define SLJIT_S6 (SLJIT_NUMBER_OF_REGISTERS - 6) +#define SLJIT_S7 (SLJIT_NUMBER_OF_REGISTERS - 7) +#define SLJIT_S8 (SLJIT_NUMBER_OF_REGISTERS - 8) +#define SLJIT_S9 (SLJIT_NUMBER_OF_REGISTERS - 9) +/* All S registers provided by the architecture can be accessed by SLJIT_S(i) + The i parameter must be >= 0 and < SLJIT_NUMBER_OF_SAVED_REGISTERS. */ +#define SLJIT_S(i) (SLJIT_NUMBER_OF_REGISTERS - (i)) + +/* Registers >= SLJIT_FIRST_SAVED_REG are saved registers. */ +#define SLJIT_FIRST_SAVED_REG (SLJIT_S0 - SLJIT_NUMBER_OF_SAVED_REGISTERS + 1) + +/* The SLJIT_SP provides direct access to the linear stack space allocated by + sljit_emit_enter. It can only be used in the following form: SLJIT_MEM1(SLJIT_SP). + The immediate offset is extended by the relative stack offset automatically. + The sljit_get_local_base can be used to obtain the absolute offset. */ +#define SLJIT_SP (SLJIT_NUMBER_OF_REGISTERS + 1) + +/* Return with machine word. */ + +#define SLJIT_RETURN_REG SLJIT_R0 + +/* --------------------------------------------------------------------- */ +/* Floating point registers */ +/* --------------------------------------------------------------------- */ + +/* Each floating point register can store a 32 or a 64 bit precision + value. The FR and FS register sets are overlap in the same way as R + and S register sets. See above. */ + +/* Note: SLJIT_UNUSED as destination is not valid for floating point + operations, since they cannot be used for setting flags. */ + +/* Floating point scratch registers. */ +#define SLJIT_FR0 1 +#define SLJIT_FR1 2 +#define SLJIT_FR2 3 +#define SLJIT_FR3 4 +#define SLJIT_FR4 5 +#define SLJIT_FR5 6 +/* All FR registers provided by the architecture can be accessed by SLJIT_FR(i) + The i parameter must be >= 0 and < SLJIT_NUMBER_OF_FLOAT_REGISTERS. */ +#define SLJIT_FR(i) (1 + (i)) + +/* Floating point saved registers. */ +#define SLJIT_FS0 (SLJIT_NUMBER_OF_FLOAT_REGISTERS) +#define SLJIT_FS1 (SLJIT_NUMBER_OF_FLOAT_REGISTERS - 1) +#define SLJIT_FS2 (SLJIT_NUMBER_OF_FLOAT_REGISTERS - 2) +#define SLJIT_FS3 (SLJIT_NUMBER_OF_FLOAT_REGISTERS - 3) +#define SLJIT_FS4 (SLJIT_NUMBER_OF_FLOAT_REGISTERS - 4) +#define SLJIT_FS5 (SLJIT_NUMBER_OF_FLOAT_REGISTERS - 5) +/* All S registers provided by the architecture can be accessed by SLJIT_FS(i) + The i parameter must be >= 0 and < SLJIT_NUMBER_OF_SAVED_FLOAT_REGISTERS. */ +#define SLJIT_FS(i) (SLJIT_NUMBER_OF_FLOAT_REGISTERS - (i)) + +/* Float registers >= SLJIT_FIRST_SAVED_FLOAT_REG are saved registers. */ +#define SLJIT_FIRST_SAVED_FLOAT_REG (SLJIT_FS0 - SLJIT_NUMBER_OF_SAVED_FLOAT_REGISTERS + 1) + +/* --------------------------------------------------------------------- */ +/* Argument type definitions */ +/* --------------------------------------------------------------------- */ + +/* Argument type definitions. + Used by SLJIT_[DEF_]ARGx and SLJIT_[DEF]_RET macros. */ + +#define SLJIT_ARG_TYPE_VOID 0 +#define SLJIT_ARG_TYPE_SW 1 +#define SLJIT_ARG_TYPE_UW 2 +#define SLJIT_ARG_TYPE_S32 3 +#define SLJIT_ARG_TYPE_U32 4 +#define SLJIT_ARG_TYPE_F32 5 +#define SLJIT_ARG_TYPE_F64 6 + +/* The following argument type definitions are used by sljit_emit_enter, + sljit_set_context, sljit_emit_call, and sljit_emit_icall functions. + The following return type definitions are used by sljit_emit_call + and sljit_emit_icall functions. + + When a function is called, the first integer argument must be placed + in SLJIT_R0, the second in SLJIT_R1, and so on. Similarly the first + floating point argument must be placed in SLJIT_FR0, the second in + SLJIT_FR1, and so on. + + Example function definition: + sljit_f32 SLJIT_FUNC example_c_callback(sljit_sw arg_a, + sljit_f64 arg_b, sljit_u32 arg_c, sljit_f32 arg_d); + + Argument type definition: + SLJIT_DEF_RET(SLJIT_ARG_TYPE_F32) + | SLJIT_DEF_ARG1(SLJIT_ARG_TYPE_SW) | SLJIT_DEF_ARG2(SLJIT_ARG_TYPE_F64) + | SLJIT_DEF_ARG3(SLJIT_ARG_TYPE_U32) | SLJIT_DEF_ARG2(SLJIT_ARG_TYPE_F32) + + Short form of argument type definition: + SLJIT_RET(F32) | SLJIT_ARG1(SW) | SLJIT_ARG2(F64) + | SLJIT_ARG3(S32) | SLJIT_ARG4(F32) + + Argument passing: + arg_a must be placed in SLJIT_R0 + arg_c must be placed in SLJIT_R1 + arg_b must be placed in SLJIT_FR0 + arg_d must be placed in SLJIT_FR1 + +Note: + The SLJIT_ARG_TYPE_VOID type is only supported by + SLJIT_DEF_RET, and SLJIT_ARG_TYPE_VOID is also the + default value when SLJIT_DEF_RET is not specified. */ +#define SLJIT_DEF_SHIFT 4 +#define SLJIT_DEF_RET(type) (type) +#define SLJIT_DEF_ARG1(type) ((type) << SLJIT_DEF_SHIFT) +#define SLJIT_DEF_ARG2(type) ((type) << (2 * SLJIT_DEF_SHIFT)) +#define SLJIT_DEF_ARG3(type) ((type) << (3 * SLJIT_DEF_SHIFT)) +#define SLJIT_DEF_ARG4(type) ((type) << (4 * SLJIT_DEF_SHIFT)) + +/* Short form of the macros above. + + For example the following definition: + SLJIT_DEF_RET(SLJIT_ARG_TYPE_SW) | SLJIT_DEF_ARG1(SLJIT_ARG_TYPE_F32) + + can be shortened to: + SLJIT_RET(SW) | SLJIT_ARG1(F32) + +Note: + The VOID type is only supported by SLJIT_RET, and + VOID is also the default value when SLJIT_RET is + not specified. */ +#define SLJIT_RET(type) SLJIT_DEF_RET(SLJIT_ARG_TYPE_ ## type) +#define SLJIT_ARG1(type) SLJIT_DEF_ARG1(SLJIT_ARG_TYPE_ ## type) +#define SLJIT_ARG2(type) SLJIT_DEF_ARG2(SLJIT_ARG_TYPE_ ## type) +#define SLJIT_ARG3(type) SLJIT_DEF_ARG3(SLJIT_ARG_TYPE_ ## type) +#define SLJIT_ARG4(type) SLJIT_DEF_ARG4(SLJIT_ARG_TYPE_ ## type) + +/* --------------------------------------------------------------------- */ +/* Main structures and functions */ +/* --------------------------------------------------------------------- */ + +/* + The following structures are private, and can be changed in the + future. Keeping them here allows code inlining. +*/ + +struct sljit_memory_fragment { + struct sljit_memory_fragment *next; + sljit_uw used_size; + /* Must be aligned to sljit_sw. */ + sljit_u8 memory[1]; +}; + +struct sljit_label { + struct sljit_label *next; + sljit_uw addr; + /* The maximum size difference. */ + sljit_uw size; +}; + +struct sljit_jump { + struct sljit_jump *next; + sljit_uw addr; + sljit_uw flags; + union { + sljit_uw target; + struct sljit_label *label; + } u; +}; + +struct sljit_put_label { + struct sljit_put_label *next; + struct sljit_label *label; + sljit_uw addr; + sljit_uw flags; +}; + +struct sljit_const { + struct sljit_const *next; + sljit_uw addr; +}; + +struct sljit_compiler { + sljit_s32 error; + sljit_s32 options; + + struct sljit_label *labels; + struct sljit_jump *jumps; + struct sljit_put_label *put_labels; + struct sljit_const *consts; + struct sljit_label *last_label; + struct sljit_jump *last_jump; + struct sljit_const *last_const; + struct sljit_put_label *last_put_label; + + void *allocator_data; + struct sljit_memory_fragment *buf; + struct sljit_memory_fragment *abuf; + + /* Used scratch registers. */ + sljit_s32 scratches; + /* Used saved registers. */ + sljit_s32 saveds; + /* Used float scratch registers. */ + sljit_s32 fscratches; + /* Used float saved registers. */ + sljit_s32 fsaveds; + /* Local stack size. */ + sljit_s32 local_size; + /* Code size. */ + sljit_uw size; + /* Relative offset of the executable mapping from the writable mapping. */ + sljit_uw executable_offset; + /* Executable size for statistical purposes. */ + sljit_uw executable_size; + +#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32) + sljit_s32 args; + sljit_s32 locals_offset; + sljit_s32 saveds_offset; + sljit_s32 stack_tmp_size; +#endif + +#if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64) + sljit_s32 mode32; +#ifdef _WIN64 + sljit_s32 locals_offset; +#endif +#endif + +#if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) + /* Constant pool handling. */ + sljit_uw *cpool; + sljit_u8 *cpool_unique; + sljit_uw cpool_diff; + sljit_uw cpool_fill; + /* Other members. */ + /* Contains pointer, "ldr pc, [...]" pairs. */ + sljit_uw patches; +#endif + +#if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) || (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) + /* Temporary fields. */ + sljit_uw shift_imm; +#endif + +#if (defined SLJIT_CONFIG_PPC && SLJIT_CONFIG_PPC) + sljit_sw imm; +#endif + +#if (defined SLJIT_CONFIG_MIPS && SLJIT_CONFIG_MIPS) + sljit_s32 delay_slot; + sljit_s32 cache_arg; + sljit_sw cache_argw; +#endif + +#if (defined SLJIT_CONFIG_SPARC_32 && SLJIT_CONFIG_SPARC_32) + sljit_s32 delay_slot; + sljit_s32 cache_arg; + sljit_sw cache_argw; +#endif + +#if (defined SLJIT_CONFIG_TILEGX && SLJIT_CONFIG_TILEGX) + sljit_s32 cache_arg; + sljit_sw cache_argw; +#endif + +#if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) + FILE* verbose; +#endif + +#if (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS) \ + || (defined SLJIT_DEBUG && SLJIT_DEBUG) + /* Flags specified by the last arithmetic instruction. + It contains the type of the variable flag. */ + sljit_s32 last_flags; + /* Local size passed to the functions. */ + sljit_s32 logical_local_size; +#endif + +#if (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS) \ + || (defined SLJIT_DEBUG && SLJIT_DEBUG) \ + || (defined SLJIT_VERBOSE && SLJIT_VERBOSE) + /* Trust arguments when the API function is called. */ + sljit_s32 skip_checks; +#endif +}; + +/* --------------------------------------------------------------------- */ +/* Main functions */ +/* --------------------------------------------------------------------- */ + +/* Creates an sljit compiler. The allocator_data is required by some + custom memory managers. This pointer is passed to SLJIT_MALLOC + and SLJIT_FREE macros. Most allocators (including the default + one) ignores this value, and it is recommended to pass NULL + as a dummy value for allocator_data. + + Returns NULL if failed. */ +SLJIT_API_FUNC_ATTRIBUTE struct sljit_compiler* sljit_create_compiler(void *allocator_data); + +/* Frees everything except the compiled machine code. */ +SLJIT_API_FUNC_ATTRIBUTE void sljit_free_compiler(struct sljit_compiler *compiler); + +/* Returns the current error code. If an error is occurred, future sljit + calls which uses the same compiler argument returns early with the same + error code. Thus there is no need for checking the error after every + call, it is enough to do it before the code is compiled. Removing + these checks increases the performance of the compiling process. */ +static SLJIT_INLINE sljit_s32 sljit_get_compiler_error(struct sljit_compiler *compiler) { return compiler->error; } + +/* Sets the compiler error code to SLJIT_ERR_ALLOC_FAILED except + if an error was detected before. After the error code is set + the compiler behaves as if the allocation failure happened + during an sljit function call. This can greatly simplify error + checking, since only the compiler status needs to be checked + after the compilation. */ +SLJIT_API_FUNC_ATTRIBUTE void sljit_set_compiler_memory_error(struct sljit_compiler *compiler); + +/* + Allocate a small amount of memory. The size must be <= 64 bytes on 32 bit, + and <= 128 bytes on 64 bit architectures. The memory area is owned by the + compiler, and freed by sljit_free_compiler. The returned pointer is + sizeof(sljit_sw) aligned. Excellent for allocating small blocks during + the compiling, and no need to worry about freeing them. The size is + enough to contain at most 16 pointers. If the size is outside of the range, + the function will return with NULL. However, this return value does not + indicate that there is no more memory (does not set the current error code + of the compiler to out-of-memory status). +*/ +SLJIT_API_FUNC_ATTRIBUTE void* sljit_alloc_memory(struct sljit_compiler *compiler, sljit_s32 size); + +#if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) +/* Passing NULL disables verbose. */ +SLJIT_API_FUNC_ATTRIBUTE void sljit_compiler_verbose(struct sljit_compiler *compiler, FILE* verbose); +#endif + +/* + Create executable code from the sljit instruction stream. This is the final step + of the code generation so no more instructions can be added after this call. +*/ + +SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler); + +/* Free executable code. */ + +SLJIT_API_FUNC_ATTRIBUTE void sljit_free_code(void* code); + +/* + When the protected executable allocator is used the JIT code is mapped + twice. The first mapping has read/write and the second mapping has read/exec + permissions. This function returns with the relative offset of the executable + mapping using the writable mapping as the base after the machine code is + successfully generated. The returned value is always 0 for the normal executable + allocator, since it uses only one mapping with read/write/exec permissions. + Dynamic code modifications requires this value. + + Before a successful code generation, this function returns with 0. +*/ +static SLJIT_INLINE sljit_sw sljit_get_executable_offset(struct sljit_compiler *compiler) { return compiler->executable_offset; } + +/* + The executable memory consumption of the generated code can be retrieved by + this function. The returned value can be used for statistical purposes. + + Before a successful code generation, this function returns with 0. +*/ +static SLJIT_INLINE sljit_uw sljit_get_generated_code_size(struct sljit_compiler *compiler) { return compiler->executable_size; } + +/* Returns with non-zero if the feature or limitation type passed as its + argument is present on the current CPU. + + Some features (e.g. floating point operations) require hardware (CPU) + support while others (e.g. move with update) are emulated if not available. + However even if a feature is emulated, specialized code paths can be faster + than the emulation. Some limitations are emulated as well so their general + case is supported but it has extra performance costs. */ + +/* [Not emulated] Floating-point support is available. */ +#define SLJIT_HAS_FPU 0 +/* [Limitation] Some registers are virtual registers. */ +#define SLJIT_HAS_VIRTUAL_REGISTERS 1 +/* [Emulated] Count leading zero is supported. */ +#define SLJIT_HAS_CLZ 2 +/* [Emulated] Conditional move is supported. */ +#define SLJIT_HAS_CMOV 3 + +#if (defined SLJIT_CONFIG_X86 && SLJIT_CONFIG_X86) +/* [Not emulated] SSE2 support is available on x86. */ +#define SLJIT_HAS_SSE2 100 +#endif + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_has_cpu_feature(sljit_s32 feature_type); + +/* Instruction generation. Returns with any error code. If there is no + error, they return with SLJIT_SUCCESS. */ + +/* + The executable code is a function from the viewpoint of the C + language. The function calls must obey to the ABI (Application + Binary Interface) of the platform, which specify the purpose of + machine registers and stack handling among other things. The + sljit_emit_enter function emits the necessary instructions for + setting up a new context for the executable code and moves function + arguments to the saved registers. Furthermore the options argument + can be used to pass configuration options to the compiler. The + available options are listed before sljit_emit_enter. + + The function argument list is the combination of SLJIT_ARGx + (SLJIT_DEF_ARG1) macros. Currently maximum 3 SW / UW + (SLJIT_ARG_TYPE_SW / LJIT_ARG_TYPE_UW) arguments are supported. + The first argument goes to SLJIT_S0, the second goes to SLJIT_S1 + and so on. The register set used by the function must be declared + as well. The number of scratch and saved registers used by the + function must be passed to sljit_emit_enter. Only R registers + between R0 and "scratches" argument can be used later. E.g. if + "scratches" is set to 2, the scratch register set will be limited + to SLJIT_R0 and SLJIT_R1. The S registers and the floating point + registers ("fscratches" and "fsaveds") are specified in a similar + manner. The sljit_emit_enter is also capable of allocating a stack + space for local variables. The "local_size" argument contains the + size in bytes of this local area and its staring address is stored + in SLJIT_SP. The memory area between SLJIT_SP (inclusive) and + SLJIT_SP + local_size (exclusive) can be modified freely until + the function returns. The stack space is not initialized. + + Note: the following conditions must met: + 0 <= scratches <= SLJIT_NUMBER_OF_REGISTERS + 0 <= saveds <= SLJIT_NUMBER_OF_REGISTERS + scratches + saveds <= SLJIT_NUMBER_OF_REGISTERS + 0 <= fscratches <= SLJIT_NUMBER_OF_FLOAT_REGISTERS + 0 <= fsaveds <= SLJIT_NUMBER_OF_FLOAT_REGISTERS + fscratches + fsaveds <= SLJIT_NUMBER_OF_FLOAT_REGISTERS + + Note: every call of sljit_emit_enter and sljit_set_context + overwrites the previous context. +*/ + +/* The absolute address returned by sljit_get_local_base with +offset 0 is aligned to sljit_f64. Otherwise it is aligned to sljit_sw. */ +#define SLJIT_F64_ALIGNMENT 0x00000001 + +/* The local_size must be >= 0 and <= SLJIT_MAX_LOCAL_SIZE. */ +#define SLJIT_MAX_LOCAL_SIZE 65536 + +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); + +/* The machine code has a context (which contains the local stack space size, + number of used registers, etc.) which initialized by sljit_emit_enter. Several + functions (like sljit_emit_return) requres this context to be able to generate + the appropriate code. However, some code fragments (like inline cache) may have + no normal entry point so their context is unknown for the compiler. Their context + can be provided to the compiler by the sljit_set_context function. + + Note: every call of sljit_emit_enter and sljit_set_context overwrites + the previous context. */ + +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); + +/* Return from machine code. The op argument can be SLJIT_UNUSED which means the + function does not return with anything or any opcode between SLJIT_MOV and + SLJIT_MOV_P (see sljit_emit_op1). As for src and srcw they must be 0 if op + is SLJIT_UNUSED, otherwise see below the description about source and + destination arguments. */ + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return(struct sljit_compiler *compiler, sljit_s32 op, + sljit_s32 src, sljit_sw srcw); + +/* Generating entry and exit points for fast call functions (see SLJIT_FAST_CALL). + Both sljit_emit_fast_enter and sljit_emit_fast_return functions preserve the + values of all registers and stack frame. The return address is stored in the + dst argument of sljit_emit_fast_enter, and this return address can be passed + to sljit_emit_fast_return to continue the execution after the fast call. + + Fast calls are cheap operations (usually only a single call instruction is + emitted) but they do not preserve any registers. However the callee function + can freely use / update any registers and stack values which can be + efficiently exploited by various optimizations. Registers can be saved + manually by the callee function if needed. + + Although returning to different address by sljit_emit_fast_return is possible, + this address usually cannot be predicted by the return address predictor of + modern CPUs which may reduce performance. Furthermore using sljit_emit_ijump + to return is also inefficient since return address prediction is usually + triggered by a specific form of ijump. + + Flags: - (does not modify flags). */ + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_enter(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw); +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_return(struct sljit_compiler *compiler, sljit_s32 src, sljit_sw srcw); + +/* + Source and destination operands for arithmetical instructions + imm - a simple immediate value (cannot be used as a destination) + reg - any of the registers (immediate argument must be 0) + [imm] - absolute immediate memory address + [reg+imm] - indirect memory address + [reg+(reg<<imm)] - indirect indexed memory address (shift must be between 0 and 3) + useful for (byte, half, int, sljit_sw) array access + (fully supported by both x86 and ARM architectures, and cheap operation on others) +*/ + +/* + IMPORATNT NOTE: memory access MUST be naturally aligned except + SLJIT_UNALIGNED macro is defined and its value is 1. + + length | alignment + ---------+----------- + byte | 1 byte (any physical_address is accepted) + half | 2 byte (physical_address & 0x1 == 0) + int | 4 byte (physical_address & 0x3 == 0) + word | 4 byte if SLJIT_32BIT_ARCHITECTURE is defined and its value is 1 + | 8 byte if SLJIT_64BIT_ARCHITECTURE is defined and its value is 1 + pointer | size of sljit_p type (4 byte on 32 bit machines, 4 or 8 byte + | on 64 bit machines) + + Note: Different architectures have different addressing limitations. + A single instruction is enough for the following addressing + modes. Other adrressing modes are emulated by instruction + sequences. This information could help to improve those code + generators which focuses only a few architectures. + + x86: [reg+imm], -2^32+1 <= imm <= 2^32-1 (full address space on x86-32) + [reg+(reg<<imm)] is supported + [imm], -2^32+1 <= imm <= 2^32-1 is supported + Write-back is not supported + arm: [reg+imm], -4095 <= imm <= 4095 or -255 <= imm <= 255 for signed + bytes, any halfs or floating point values) + [reg+(reg<<imm)] is supported + Write-back is supported + arm-t2: [reg+imm], -255 <= imm <= 4095 + [reg+(reg<<imm)] is supported + Write back is supported only for [reg+imm], where -255 <= imm <= 255 + arm64: [reg+imm], -256 <= imm <= 255, 0 <= aligned imm <= 4095 * alignment + [reg+(reg<<imm)] is supported + Write back is supported only for [reg+imm], where -256 <= imm <= 255 + ppc: [reg+imm], -65536 <= imm <= 65535. 64 bit loads/stores and 32 bit + signed load on 64 bit requires immediates divisible by 4. + [reg+imm] is not supported for signed 8 bit values. + [reg+reg] is supported + Write-back is supported except for one instruction: 32 bit signed + load with [reg+imm] addressing mode on 64 bit. + mips: [reg+imm], -65536 <= imm <= 65535 + sparc: [reg+imm], -4096 <= imm <= 4095 + [reg+reg] is supported +*/ + +/* Macros for specifying operand types. */ +#define SLJIT_MEM 0x80 +#define SLJIT_MEM0() (SLJIT_MEM) +#define SLJIT_MEM1(r1) (SLJIT_MEM | (r1)) +#define SLJIT_MEM2(r1, r2) (SLJIT_MEM | (r1) | ((r2) << 8)) +#define SLJIT_IMM 0x40 + +/* Set 32 bit operation mode (I) on 64 bit CPUs. This option is ignored on + 32 bit CPUs. When this option is set for an arithmetic operation, only + the lower 32 bit of the input registers are used, and the CPU status + flags are set according to the 32 bit result. Although the higher 32 bit + of the input and the result registers are not defined by SLJIT, it might + be defined by the CPU architecture (e.g. MIPS). To satisfy these CPU + requirements all source registers must be the result of those operations + where this option was also set. Memory loads read 32 bit values rather + than 64 bit ones. In other words 32 bit and 64 bit operations cannot + be mixed. The only exception is SLJIT_MOV32 and SLJIT_MOVU32 whose source + register can hold any 32 or 64 bit value, and it is converted to a 32 bit + compatible format first. This conversion is free (no instructions are + emitted) on most CPUs. A 32 bit value can also be converted to a 64 bit + value by SLJIT_MOV_S32 (sign extension) or SLJIT_MOV_U32 (zero extension). + + Note: memory addressing always uses 64 bit values on 64 bit systems so + the result of a 32 bit operation must not be used with SLJIT_MEMx + macros. + + This option is part of the instruction name, so there is no need to + manually set it. E.g: + + SLJIT_ADD32 == (SLJIT_ADD | SLJIT_I32_OP) */ +#define SLJIT_I32_OP 0x100 + +/* Set F32 (single) precision mode for floating-point computation. This + option is similar to SLJIT_I32_OP, it just applies to floating point + registers. When this option is passed, the CPU performs 32 bit floating + point operations, rather than 64 bit one. Similar to SLJIT_I32_OP, all + register arguments must be the result of those operations where this + option was also set. + + This option is part of the instruction name, so there is no need to + manually set it. E.g: + + SLJIT_MOV_F32 = (SLJIT_MOV_F64 | SLJIT_F32_OP) + */ +#define SLJIT_F32_OP SLJIT_I32_OP + +/* Many CPUs (x86, ARM, PPC) have status flags which can be set according + to the result of an operation. Other CPUs (MIPS) do not have status + flags, and results must be stored in registers. To cover both architecture + types efficiently only two flags are defined by SLJIT: + + * Zero (equal) flag: it is set if the result is zero + * Variable flag: its value is defined by the last arithmetic operation + + SLJIT instructions can set any or both of these flags. The value of + these flags is undefined if the instruction does not specify their value. + The description of each instruction contains the list of allowed flag + types. + + Example: SLJIT_ADD can set the Z, OVERFLOW, CARRY flags hence + + sljit_op2(..., SLJIT_ADD, ...) + Both the zero and variable flags are undefined so they can + have any value after the operation is completed. + + sljit_op2(..., SLJIT_ADD | SLJIT_SET_Z, ...) + Sets the zero flag if the result is zero, clears it otherwise. + The variable flag is undefined. + + sljit_op2(..., SLJIT_ADD | SLJIT_SET_OVERFLOW, ...) + Sets the variable flag if an integer overflow occurs, clears + it otherwise. The zero flag is undefined. + + sljit_op2(..., SLJIT_ADD | SLJIT_SET_Z | SLJIT_SET_CARRY, ...) + Sets the zero flag if the result is zero, clears it otherwise. + Sets the variable flag if unsigned overflow (carry) occurs, + clears it otherwise. + + If an instruction (e.g. SLJIT_MOV) does not modify flags the flags are + unchanged. + + Using these flags can reduce the number of emitted instructions. E.g. a + fast loop can be implemented by decreasing a counter register and set the + zero flag to jump back if the counter register has not reached zero. + + Motivation: although CPUs can set a large number of flags, usually their + values are ignored or only one of them is used. Emulating a large number + of flags on systems without flag register is complicated so SLJIT + instructions must specify the flag they want to use and only that flag + will be emulated. The last arithmetic instruction can be repeated if + multiple flags need to be checked. +*/ + +/* Set Zero status flag. */ +#define SLJIT_SET_Z 0x0200 +/* Set the variable status flag if condition is true. + See comparison types. */ +#define SLJIT_SET(condition) ((condition) << 10) + +/* Notes: + - you cannot postpone conditional jump instructions except if noted that + the instruction does not set flags (See: SLJIT_KEEP_FLAGS). + - flag combinations: '|' means 'logical or'. */ + +/* Starting index of opcodes for sljit_emit_op0. */ +#define SLJIT_OP0_BASE 0 + +/* Flags: - (does not modify flags) + Note: breakpoint instruction is not supported by all architectures (e.g. ppc) + It falls back to SLJIT_NOP in those cases. */ +#define SLJIT_BREAKPOINT (SLJIT_OP0_BASE + 0) +/* Flags: - (does not modify flags) + Note: may or may not cause an extra cycle wait + it can even decrease the runtime in a few cases. */ +#define SLJIT_NOP (SLJIT_OP0_BASE + 1) +/* Flags: - (may destroy flags) + Unsigned multiplication of SLJIT_R0 and SLJIT_R1. + Result is placed into SLJIT_R1:SLJIT_R0 (high:low) word */ +#define SLJIT_LMUL_UW (SLJIT_OP0_BASE + 2) +/* Flags: - (may destroy flags) + Signed multiplication of SLJIT_R0 and SLJIT_R1. + Result is placed into SLJIT_R1:SLJIT_R0 (high:low) word */ +#define SLJIT_LMUL_SW (SLJIT_OP0_BASE + 3) +/* Flags: - (may destroy flags) + Unsigned divide of the value in SLJIT_R0 by the value in SLJIT_R1. + The result is placed into SLJIT_R0 and the remainder into SLJIT_R1. + Note: if SLJIT_R1 is 0, the behaviour is undefined. */ +#define SLJIT_DIVMOD_UW (SLJIT_OP0_BASE + 4) +#define SLJIT_DIVMOD_U32 (SLJIT_DIVMOD_UW | SLJIT_I32_OP) +/* Flags: - (may destroy flags) + Signed divide of the value in SLJIT_R0 by the value in SLJIT_R1. + The result is placed into SLJIT_R0 and the remainder into SLJIT_R1. + Note: if SLJIT_R1 is 0, the behaviour is undefined. + Note: if SLJIT_R1 is -1 and SLJIT_R0 is integer min (0x800..00), + the behaviour is undefined. */ +#define SLJIT_DIVMOD_SW (SLJIT_OP0_BASE + 5) +#define SLJIT_DIVMOD_S32 (SLJIT_DIVMOD_SW | SLJIT_I32_OP) +/* Flags: - (may destroy flags) + Unsigned divide of the value in SLJIT_R0 by the value in SLJIT_R1. + The result is placed into SLJIT_R0. SLJIT_R1 preserves its value. + Note: if SLJIT_R1 is 0, the behaviour is undefined. */ +#define SLJIT_DIV_UW (SLJIT_OP0_BASE + 6) +#define SLJIT_DIV_U32 (SLJIT_DIV_UW | SLJIT_I32_OP) +/* Flags: - (may destroy flags) + Signed divide of the value in SLJIT_R0 by the value in SLJIT_R1. + The result is placed into SLJIT_R0. SLJIT_R1 preserves its value. + Note: if SLJIT_R1 is 0, the behaviour is undefined. + Note: if SLJIT_R1 is -1 and SLJIT_R0 is integer min (0x800..00), + the behaviour is undefined. */ +#define SLJIT_DIV_SW (SLJIT_OP0_BASE + 7) +#define SLJIT_DIV_S32 (SLJIT_DIV_SW | SLJIT_I32_OP) + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op0(struct sljit_compiler *compiler, sljit_s32 op); + +/* Starting index of opcodes for sljit_emit_op1. */ +#define SLJIT_OP1_BASE 32 + +/* The MOV instruction transfers data from source to destination. + + MOV instruction suffixes: + + U8 - unsigned 8 bit data transfer + S8 - signed 8 bit data transfer + U16 - unsigned 16 bit data transfer + S16 - signed 16 bit data transfer + U32 - unsigned int (32 bit) data transfer + S32 - signed int (32 bit) data transfer + P - pointer (sljit_p) data transfer + + If the destination of a MOV instruction is SLJIT_UNUSED and the source + operand is a memory address the compiler emits a prefetch instruction + if this instruction is supported by the current CPU. Higher data sizes + bring the data closer to the core: a MOV with word size loads the data + into a higher level cache than a byte size. Otherwise the type does not + affect the prefetch instruction. Furthermore a prefetch instruction + never fails, so it can be used to prefetch a data from an address and + check whether that address is NULL afterwards. +*/ + +/* Flags: - (does not modify flags) */ +#define SLJIT_MOV (SLJIT_OP1_BASE + 0) +/* Flags: - (does not modify flags) */ +#define SLJIT_MOV_U8 (SLJIT_OP1_BASE + 1) +#define SLJIT_MOV32_U8 (SLJIT_MOV_U8 | SLJIT_I32_OP) +/* Flags: - (does not modify flags) */ +#define SLJIT_MOV_S8 (SLJIT_OP1_BASE + 2) +#define SLJIT_MOV32_S8 (SLJIT_MOV_S8 | SLJIT_I32_OP) +/* Flags: - (does not modify flags) */ +#define SLJIT_MOV_U16 (SLJIT_OP1_BASE + 3) +#define SLJIT_MOV32_U16 (SLJIT_MOV_U16 | SLJIT_I32_OP) +/* Flags: - (does not modify flags) */ +#define SLJIT_MOV_S16 (SLJIT_OP1_BASE + 4) +#define SLJIT_MOV32_S16 (SLJIT_MOV_S16 | SLJIT_I32_OP) +/* Flags: - (does not modify flags) + Note: no SLJIT_MOV32_U32 form, since it is the same as SLJIT_MOV32 */ +#define SLJIT_MOV_U32 (SLJIT_OP1_BASE + 5) +/* Flags: - (does not modify flags) + Note: no SLJIT_MOV32_S32 form, since it is the same as SLJIT_MOV32 */ +#define SLJIT_MOV_S32 (SLJIT_OP1_BASE + 6) +/* Flags: - (does not modify flags) */ +#define SLJIT_MOV32 (SLJIT_MOV_S32 | SLJIT_I32_OP) +/* Flags: - (does not modify flags) + Note: load a pointer sized data, useful on x32 (a 32 bit mode on x86-64 + where all x64 features are available, e.g. 16 register) or similar + compiling modes */ +#define SLJIT_MOV_P (SLJIT_OP1_BASE + 7) +/* Flags: Z + Note: immediate source argument is not supported */ +#define SLJIT_NOT (SLJIT_OP1_BASE + 8) +#define SLJIT_NOT32 (SLJIT_NOT | SLJIT_I32_OP) +/* Flags: Z | OVERFLOW + Note: immediate source argument is not supported */ +#define SLJIT_NEG (SLJIT_OP1_BASE + 9) +#define SLJIT_NEG32 (SLJIT_NEG | SLJIT_I32_OP) +/* Count leading zeroes + Flags: - (may destroy flags) + Note: immediate source argument is not supported */ +#define SLJIT_CLZ (SLJIT_OP1_BASE + 10) +#define SLJIT_CLZ32 (SLJIT_CLZ | SLJIT_I32_OP) + +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); + +/* Starting index of opcodes for sljit_emit_op2. */ +#define SLJIT_OP2_BASE 96 + +/* Flags: Z | OVERFLOW | CARRY */ +#define SLJIT_ADD (SLJIT_OP2_BASE + 0) +#define SLJIT_ADD32 (SLJIT_ADD | SLJIT_I32_OP) +/* Flags: CARRY */ +#define SLJIT_ADDC (SLJIT_OP2_BASE + 1) +#define SLJIT_ADDC32 (SLJIT_ADDC | SLJIT_I32_OP) +/* Flags: Z | LESS | GREATER_EQUAL | GREATER | LESS_EQUAL + SIG_LESS | SIG_GREATER_EQUAL | SIG_GREATER + SIG_LESS_EQUAL | CARRY */ +#define SLJIT_SUB (SLJIT_OP2_BASE + 2) +#define SLJIT_SUB32 (SLJIT_SUB | SLJIT_I32_OP) +/* Flags: CARRY */ +#define SLJIT_SUBC (SLJIT_OP2_BASE + 3) +#define SLJIT_SUBC32 (SLJIT_SUBC | SLJIT_I32_OP) +/* Note: integer mul + Flags: MUL_OVERFLOW */ +#define SLJIT_MUL (SLJIT_OP2_BASE + 4) +#define SLJIT_MUL32 (SLJIT_MUL | SLJIT_I32_OP) +/* Flags: Z */ +#define SLJIT_AND (SLJIT_OP2_BASE + 5) +#define SLJIT_AND32 (SLJIT_AND | SLJIT_I32_OP) +/* Flags: Z */ +#define SLJIT_OR (SLJIT_OP2_BASE + 6) +#define SLJIT_OR32 (SLJIT_OR | SLJIT_I32_OP) +/* Flags: Z */ +#define SLJIT_XOR (SLJIT_OP2_BASE + 7) +#define SLJIT_XOR32 (SLJIT_XOR | SLJIT_I32_OP) +/* Flags: Z + Let bit_length be the length of the shift operation: 32 or 64. + If src2 is immediate, src2w is masked by (bit_length - 1). + Otherwise, if the content of src2 is outside the range from 0 + to bit_length - 1, the result is undefined. */ +#define SLJIT_SHL (SLJIT_OP2_BASE + 8) +#define SLJIT_SHL32 (SLJIT_SHL | SLJIT_I32_OP) +/* Flags: Z + Let bit_length be the length of the shift operation: 32 or 64. + If src2 is immediate, src2w is masked by (bit_length - 1). + Otherwise, if the content of src2 is outside the range from 0 + to bit_length - 1, the result is undefined. */ +#define SLJIT_LSHR (SLJIT_OP2_BASE + 9) +#define SLJIT_LSHR32 (SLJIT_LSHR | SLJIT_I32_OP) +/* Flags: Z + Let bit_length be the length of the shift operation: 32 or 64. + If src2 is immediate, src2w is masked by (bit_length - 1). + Otherwise, if the content of src2 is outside the range from 0 + to bit_length - 1, the result is undefined. */ +#define SLJIT_ASHR (SLJIT_OP2_BASE + 10) +#define SLJIT_ASHR32 (SLJIT_ASHR | SLJIT_I32_OP) + +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); + +/* Starting index of opcodes for sljit_emit_fop1. */ +#define SLJIT_FOP1_BASE 128 + +/* Flags: - (does not modify flags) */ +#define SLJIT_MOV_F64 (SLJIT_FOP1_BASE + 0) +#define SLJIT_MOV_F32 (SLJIT_MOV_F64 | SLJIT_F32_OP) +/* Convert opcodes: CONV[DST_TYPE].FROM[SRC_TYPE] + SRC/DST TYPE can be: D - double, S - single, W - signed word, I - signed int + Rounding mode when the destination is W or I: round towards zero. */ +/* Flags: - (does not modify flags) */ +#define SLJIT_CONV_F64_FROM_F32 (SLJIT_FOP1_BASE + 1) +#define SLJIT_CONV_F32_FROM_F64 (SLJIT_CONV_F64_FROM_F32 | SLJIT_F32_OP) +/* Flags: - (does not modify flags) */ +#define SLJIT_CONV_SW_FROM_F64 (SLJIT_FOP1_BASE + 2) +#define SLJIT_CONV_SW_FROM_F32 (SLJIT_CONV_SW_FROM_F64 | SLJIT_F32_OP) +/* Flags: - (does not modify flags) */ +#define SLJIT_CONV_S32_FROM_F64 (SLJIT_FOP1_BASE + 3) +#define SLJIT_CONV_S32_FROM_F32 (SLJIT_CONV_S32_FROM_F64 | SLJIT_F32_OP) +/* Flags: - (does not modify flags) */ +#define SLJIT_CONV_F64_FROM_SW (SLJIT_FOP1_BASE + 4) +#define SLJIT_CONV_F32_FROM_SW (SLJIT_CONV_F64_FROM_SW | SLJIT_F32_OP) +/* Flags: - (does not modify flags) */ +#define SLJIT_CONV_F64_FROM_S32 (SLJIT_FOP1_BASE + 5) +#define SLJIT_CONV_F32_FROM_S32 (SLJIT_CONV_F64_FROM_S32 | SLJIT_F32_OP) +/* Note: dst is the left and src is the right operand for SLJIT_CMPD. + Flags: EQUAL_F | LESS_F | GREATER_EQUAL_F | GREATER_F | LESS_EQUAL_F */ +#define SLJIT_CMP_F64 (SLJIT_FOP1_BASE + 6) +#define SLJIT_CMP_F32 (SLJIT_CMP_F64 | SLJIT_F32_OP) +/* Flags: - (does not modify flags) */ +#define SLJIT_NEG_F64 (SLJIT_FOP1_BASE + 7) +#define SLJIT_NEG_F32 (SLJIT_NEG_F64 | SLJIT_F32_OP) +/* Flags: - (does not modify flags) */ +#define SLJIT_ABS_F64 (SLJIT_FOP1_BASE + 8) +#define SLJIT_ABS_F32 (SLJIT_ABS_F64 | SLJIT_F32_OP) + +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); + +/* Starting index of opcodes for sljit_emit_fop2. */ +#define SLJIT_FOP2_BASE 160 + +/* Flags: - (does not modify flags) */ +#define SLJIT_ADD_F64 (SLJIT_FOP2_BASE + 0) +#define SLJIT_ADD_F32 (SLJIT_ADD_F64 | SLJIT_F32_OP) +/* Flags: - (does not modify flags) */ +#define SLJIT_SUB_F64 (SLJIT_FOP2_BASE + 1) +#define SLJIT_SUB_F32 (SLJIT_SUB_F64 | SLJIT_F32_OP) +/* Flags: - (does not modify flags) */ +#define SLJIT_MUL_F64 (SLJIT_FOP2_BASE + 2) +#define SLJIT_MUL_F32 (SLJIT_MUL_F64 | SLJIT_F32_OP) +/* Flags: - (does not modify flags) */ +#define SLJIT_DIV_F64 (SLJIT_FOP2_BASE + 3) +#define SLJIT_DIV_F32 (SLJIT_DIV_F64 | SLJIT_F32_OP) + +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); + +/* Label and jump instructions. */ + +SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler); + +/* Invert (negate) conditional type: xor (^) with 0x1 */ + +/* Integer comparison types. */ +#define SLJIT_EQUAL 0 +#define SLJIT_EQUAL32 (SLJIT_EQUAL | SLJIT_I32_OP) +#define SLJIT_ZERO 0 +#define SLJIT_ZERO32 (SLJIT_ZERO | SLJIT_I32_OP) +#define SLJIT_NOT_EQUAL 1 +#define SLJIT_NOT_EQUAL32 (SLJIT_NOT_EQUAL | SLJIT_I32_OP) +#define SLJIT_NOT_ZERO 1 +#define SLJIT_NOT_ZERO32 (SLJIT_NOT_ZERO | SLJIT_I32_OP) + +#define SLJIT_LESS 2 +#define SLJIT_LESS32 (SLJIT_LESS | SLJIT_I32_OP) +#define SLJIT_SET_LESS SLJIT_SET(SLJIT_LESS) +#define SLJIT_GREATER_EQUAL 3 +#define SLJIT_GREATER_EQUAL32 (SLJIT_GREATER_EQUAL | SLJIT_I32_OP) +#define SLJIT_SET_GREATER_EQUAL SLJIT_SET(SLJIT_GREATER_EQUAL) +#define SLJIT_GREATER 4 +#define SLJIT_GREATER32 (SLJIT_GREATER | SLJIT_I32_OP) +#define SLJIT_SET_GREATER SLJIT_SET(SLJIT_GREATER) +#define SLJIT_LESS_EQUAL 5 +#define SLJIT_LESS_EQUAL32 (SLJIT_LESS_EQUAL | SLJIT_I32_OP) +#define SLJIT_SET_LESS_EQUAL SLJIT_SET(SLJIT_LESS_EQUAL) +#define SLJIT_SIG_LESS 6 +#define SLJIT_SIG_LESS32 (SLJIT_SIG_LESS | SLJIT_I32_OP) +#define SLJIT_SET_SIG_LESS SLJIT_SET(SLJIT_SIG_LESS) +#define SLJIT_SIG_GREATER_EQUAL 7 +#define SLJIT_SIG_GREATER_EQUAL32 (SLJIT_SIG_GREATER_EQUAL | SLJIT_I32_OP) +#define SLJIT_SET_SIG_GREATER_EQUAL SLJIT_SET(SLJIT_SIG_GREATER_EQUAL) +#define SLJIT_SIG_GREATER 8 +#define SLJIT_SIG_GREATER32 (SLJIT_SIG_GREATER | SLJIT_I32_OP) +#define SLJIT_SET_SIG_GREATER SLJIT_SET(SLJIT_SIG_GREATER) +#define SLJIT_SIG_LESS_EQUAL 9 +#define SLJIT_SIG_LESS_EQUAL32 (SLJIT_SIG_LESS_EQUAL | SLJIT_I32_OP) +#define SLJIT_SET_SIG_LESS_EQUAL SLJIT_SET(SLJIT_SIG_LESS_EQUAL) + +#define SLJIT_OVERFLOW 10 +#define SLJIT_OVERFLOW32 (SLJIT_OVERFLOW | SLJIT_I32_OP) +#define SLJIT_SET_OVERFLOW SLJIT_SET(SLJIT_OVERFLOW) +#define SLJIT_NOT_OVERFLOW 11 +#define SLJIT_NOT_OVERFLOW32 (SLJIT_NOT_OVERFLOW | SLJIT_I32_OP) + +#define SLJIT_MUL_OVERFLOW 12 +#define SLJIT_MUL_OVERFLOW32 (SLJIT_MUL_OVERFLOW | SLJIT_I32_OP) +#define SLJIT_SET_MUL_OVERFLOW SLJIT_SET(SLJIT_MUL_OVERFLOW) +#define SLJIT_MUL_NOT_OVERFLOW 13 +#define SLJIT_MUL_NOT_OVERFLOW32 (SLJIT_MUL_NOT_OVERFLOW | SLJIT_I32_OP) + +/* There is no SLJIT_CARRY or SLJIT_NOT_CARRY. */ +#define SLJIT_SET_CARRY SLJIT_SET(14) + +/* Floating point comparison types. */ +#define SLJIT_EQUAL_F64 16 +#define SLJIT_EQUAL_F32 (SLJIT_EQUAL_F64 | SLJIT_F32_OP) +#define SLJIT_SET_EQUAL_F SLJIT_SET(SLJIT_EQUAL_F64) +#define SLJIT_NOT_EQUAL_F64 17 +#define SLJIT_NOT_EQUAL_F32 (SLJIT_NOT_EQUAL_F64 | SLJIT_F32_OP) +#define SLJIT_SET_NOT_EQUAL_F SLJIT_SET(SLJIT_NOT_EQUAL_F64) +#define SLJIT_LESS_F64 18 +#define SLJIT_LESS_F32 (SLJIT_LESS_F64 | SLJIT_F32_OP) +#define SLJIT_SET_LESS_F SLJIT_SET(SLJIT_LESS_F64) +#define SLJIT_GREATER_EQUAL_F64 19 +#define SLJIT_GREATER_EQUAL_F32 (SLJIT_GREATER_EQUAL_F64 | SLJIT_F32_OP) +#define SLJIT_SET_GREATER_EQUAL_F SLJIT_SET(SLJIT_GREATER_EQUAL_F64) +#define SLJIT_GREATER_F64 20 +#define SLJIT_GREATER_F32 (SLJIT_GREATER_F64 | SLJIT_F32_OP) +#define SLJIT_SET_GREATER_F SLJIT_SET(SLJIT_GREATER_F64) +#define SLJIT_LESS_EQUAL_F64 21 +#define SLJIT_LESS_EQUAL_F32 (SLJIT_LESS_EQUAL_F64 | SLJIT_F32_OP) +#define SLJIT_SET_LESS_EQUAL_F SLJIT_SET(SLJIT_LESS_EQUAL_F64) +#define SLJIT_UNORDERED_F64 22 +#define SLJIT_UNORDERED_F32 (SLJIT_UNORDERED_F64 | SLJIT_F32_OP) +#define SLJIT_SET_UNORDERED_F SLJIT_SET(SLJIT_UNORDERED_F64) +#define SLJIT_ORDERED_F64 23 +#define SLJIT_ORDERED_F32 (SLJIT_ORDERED_F64 | SLJIT_F32_OP) +#define SLJIT_SET_ORDERED_F SLJIT_SET(SLJIT_ORDERED_F64) + +/* Unconditional jump types. */ +#define SLJIT_JUMP 24 + /* Fast calling method. See sljit_emit_fast_enter / sljit_emit_fast_return. */ +#define SLJIT_FAST_CALL 25 + /* Called function must be declared with the SLJIT_FUNC attribute. */ +#define SLJIT_CALL 26 + /* Called function must be declared with cdecl attribute. + This is the default attribute for C functions. */ +#define SLJIT_CALL_CDECL 27 + +/* The target can be changed during runtime (see: sljit_set_jump_addr). */ +#define SLJIT_REWRITABLE_JUMP 0x1000 + +/* Emit a jump instruction. The destination is not set, only the type of the jump. + type must be between SLJIT_EQUAL and SLJIT_FAST_CALL + type can be combined (or'ed) with SLJIT_REWRITABLE_JUMP + + Flags: does not modify flags. */ +SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, sljit_s32 type); + +/* Emit a C compiler (ABI) compatible function call. + type must be SLJIT_CALL or SLJIT_CALL_CDECL + type can be combined (or'ed) with SLJIT_REWRITABLE_JUMP + arg_types is the combination of SLJIT_RET / SLJIT_ARGx (SLJIT_DEF_RET / SLJIT_DEF_ARGx) macros + + Flags: destroy all flags. */ +SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_call(struct sljit_compiler *compiler, sljit_s32 type, sljit_s32 arg_types); + +/* Basic arithmetic comparison. In most architectures it is implemented as + an SLJIT_SUB operation (with SLJIT_UNUSED destination and setting + appropriate flags) followed by a sljit_emit_jump. However some + architectures (i.e: ARM64 or MIPS) may employ special optimizations here. + It is suggested to use this comparison form when appropriate. + type must be between SLJIT_EQUAL and SLJIT_I_SIG_LESS_EQUAL + type can be combined (or'ed) with SLJIT_REWRITABLE_JUMP + + Flags: may destroy flags. */ +SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_cmp(struct sljit_compiler *compiler, sljit_s32 type, + sljit_s32 src1, sljit_sw src1w, + sljit_s32 src2, sljit_sw src2w); + +/* Basic floating point comparison. In most architectures it is implemented as + an SLJIT_FCMP operation (setting appropriate flags) followed by a + sljit_emit_jump. However some architectures (i.e: MIPS) may employ + special optimizations here. It is suggested to use this comparison form + when appropriate. + type must be between SLJIT_EQUAL_F64 and SLJIT_ORDERED_F32 + type can be combined (or'ed) with SLJIT_REWRITABLE_JUMP + Flags: destroy flags. + Note: if either operand is NaN, the behaviour is undefined for + types up to SLJIT_S_LESS_EQUAL. */ +SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_fcmp(struct sljit_compiler *compiler, sljit_s32 type, + sljit_s32 src1, sljit_sw src1w, + sljit_s32 src2, sljit_sw src2w); + +/* Set the destination of the jump to this label. */ +SLJIT_API_FUNC_ATTRIBUTE void sljit_set_label(struct sljit_jump *jump, struct sljit_label* label); +/* Set the destination address of the jump to this label. */ +SLJIT_API_FUNC_ATTRIBUTE void sljit_set_target(struct sljit_jump *jump, sljit_uw target); + +/* Emit an indirect jump or fast call. + Direct form: set src to SLJIT_IMM() and srcw to the address + Indirect form: any other valid addressing mode + type must be between SLJIT_JUMP and SLJIT_FAST_CALL + + Flags: does not modify flags. */ +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_ijump(struct sljit_compiler *compiler, sljit_s32 type, sljit_s32 src, sljit_sw srcw); + +/* Emit a C compiler (ABI) compatible function call. + Direct form: set src to SLJIT_IMM() and srcw to the address + Indirect form: any other valid addressing mode + type must be SLJIT_CALL or SLJIT_CALL_CDECL + arg_types is the combination of SLJIT_RET / SLJIT_ARGx (SLJIT_DEF_RET / SLJIT_DEF_ARGx) macros + + Flags: destroy all flags. */ +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); + +/* Perform the operation using the conditional flags as the second argument. + Type must always be between SLJIT_EQUAL and SLJIT_ORDERED_F64. The value + represented by the type is 1, if the condition represented by the type + is fulfilled, and 0 otherwise. + + If op == SLJIT_MOV, SLJIT_MOV32: + Set dst to the value represented by the type (0 or 1). + Flags: - (does not modify flags) + If op == SLJIT_OR, op == SLJIT_AND, op == SLJIT_XOR + Performs the binary operation using dst as the first, and the value + represented by type as the second argument. Result is written into dst. + Flags: Z (may destroy flags) */ +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); + +/* Emit a conditional mov instruction which moves source to destination, + if the condition is satisfied. Unlike other arithmetic operations this + instruction does not support memory access. + + type must be between SLJIT_EQUAL and SLJIT_ORDERED_F64 + dst_reg must be a valid register and it can be combined + with SLJIT_I32_OP to perform a 32 bit arithmetic operation + src must be register or immediate (SLJIT_IMM) + + Flags: - (does not modify flags) */ +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); + +/* The following flags are used by sljit_emit_mem() and sljit_emit_fmem(). */ + +/* When SLJIT_MEM_SUPP is passed, no instructions are emitted. + Instead the function returns with SLJIT_SUCCESS if the instruction + form is supported and SLJIT_ERR_UNSUPPORTED otherwise. This flag + allows runtime checking of available instruction forms. */ +#define SLJIT_MEM_SUPP 0x0200 +/* Memory load operation. This is the default. */ +#define SLJIT_MEM_LOAD 0x0000 +/* Memory store operation. */ +#define SLJIT_MEM_STORE 0x0400 +/* Base register is updated before the memory access. */ +#define SLJIT_MEM_PRE 0x0800 +/* Base register is updated after the memory access. */ +#define SLJIT_MEM_POST 0x1000 + +/* Emit a single memory load or store with update instruction. When the + requested instruction form is not supported by the CPU, it returns + with SLJIT_ERR_UNSUPPORTED instead of emulating the instruction. This + allows specializing tight loops based on the supported instruction + forms (see SLJIT_MEM_SUPP flag). + + type must be between SLJIT_MOV and SLJIT_MOV_P and can be + combined with SLJIT_MEM_* flags. Either SLJIT_MEM_PRE + or SLJIT_MEM_POST must be specified. + reg is the source or destination register, and must be + different from the base register of the mem operand + mem must be a SLJIT_MEM1() or SLJIT_MEM2() operand + + Flags: - (does not modify flags) */ +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_mem(struct sljit_compiler *compiler, sljit_s32 type, + sljit_s32 reg, + sljit_s32 mem, sljit_sw memw); + +/* Same as sljit_emit_mem except the followings: + + type must be SLJIT_MOV_F64 or SLJIT_MOV_F32 and can be + combined with SLJIT_MEM_* flags. Either SLJIT_MEM_PRE + or SLJIT_MEM_POST must be specified. + freg is the source or destination floating point register */ + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fmem(struct sljit_compiler *compiler, sljit_s32 type, + sljit_s32 freg, + sljit_s32 mem, sljit_sw memw); + +/* Copies the base address of SLJIT_SP + offset to dst. The offset can be + anything to negate the effect of relative addressing. For example if an + array of sljit_sw values is stored on the stack from offset 0x40, and R0 + contains the offset of an array item plus 0x120, this item can be + overwritten by two SLJIT instructions: + + sljit_get_local_base(compiler, SLJIT_R1, 0, 0x40 - 0x120); + sljit_emit_op1(compiler, SLJIT_MOV, SLJIT_MEM2(SLJIT_R1, SLJIT_R0), 0, SLJIT_IMM, 0x5); + + Flags: - (may destroy flags) */ +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_local_base(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw, sljit_sw offset); + +/* Store a value that can be changed runtime (see: sljit_get_const_addr / sljit_set_const) + Flags: - (does not modify flags) */ +SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw, sljit_sw init_value); + +/* Store the value of a label (see: sljit_set_put_label) + Flags: - (does not modify flags) */ +SLJIT_API_FUNC_ATTRIBUTE struct sljit_put_label* sljit_emit_put_label(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw); + +/* Set the value stored by put_label to this label. */ +SLJIT_API_FUNC_ATTRIBUTE void sljit_set_put_label(struct sljit_put_label *put_label, struct sljit_label *label); + +/* After the code generation the address for label, jump and const instructions + are computed. Since these structures are freed by sljit_free_compiler, the + addresses must be preserved by the user program elsewere. */ +static SLJIT_INLINE sljit_uw sljit_get_label_addr(struct sljit_label *label) { return label->addr; } +static SLJIT_INLINE sljit_uw sljit_get_jump_addr(struct sljit_jump *jump) { return jump->addr; } +static SLJIT_INLINE sljit_uw sljit_get_const_addr(struct sljit_const *const_) { return const_->addr; } + +/* Only the address and executable offset are required to perform dynamic + code modifications. See sljit_get_executable_offset function. */ +SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_target, sljit_sw executable_offset); +SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant, sljit_sw executable_offset); + +/* --------------------------------------------------------------------- */ +/* Miscellaneous utility functions */ +/* --------------------------------------------------------------------- */ + +#define SLJIT_MAJOR_VERSION 0 +#define SLJIT_MINOR_VERSION 94 + +/* Get the human readable name of the platform. Can be useful on platforms + like ARM, where ARM and Thumb2 functions can be mixed, and + it is useful to know the type of the code generator. */ +SLJIT_API_FUNC_ATTRIBUTE const char* sljit_get_platform_name(void); + +/* Portable helper function to get an offset of a member. */ +#define SLJIT_OFFSETOF(base, member) ((sljit_sw)(&((base*)0x10)->member) - 0x10) + +#if (defined SLJIT_UTIL_GLOBAL_LOCK && SLJIT_UTIL_GLOBAL_LOCK) +/* This global lock is useful to compile common functions. */ +SLJIT_API_FUNC_ATTRIBUTE void SLJIT_FUNC sljit_grab_lock(void); +SLJIT_API_FUNC_ATTRIBUTE void SLJIT_FUNC sljit_release_lock(void); +#endif + +#if (defined SLJIT_UTIL_STACK && SLJIT_UTIL_STACK) + +/* The sljit_stack structure and its manipulation functions provides + an implementation for a top-down stack. The stack top is stored + in the end field of the sljit_stack structure and the stack goes + down to the min_start field, so the memory region reserved for + this stack is between min_start (inclusive) and end (exclusive) + fields. However the application can only use the region between + start (inclusive) and end (exclusive) fields. The sljit_stack_resize + function can be used to extend this region up to min_start. + + This feature uses the "address space reserve" feature of modern + operating systems. Instead of allocating a large memory block + applications can allocate a small memory region and extend it + later without moving the content of the memory area. Therefore + after a successful resize by sljit_stack_resize all pointers into + this region are still valid. + + Note: + this structure may not be supported by all operating systems. + end and max_limit fields are aligned to PAGE_SIZE bytes (usually + 4 Kbyte or more). + stack should grow in larger steps, e.g. 4Kbyte, 16Kbyte or more. */ + +struct sljit_stack { + /* User data, anything can be stored here. + Initialized to the same value as the end field. */ + sljit_u8 *top; +/* These members are read only. */ + /* End address of the stack */ + sljit_u8 *end; + /* Current start address of the stack. */ + sljit_u8 *start; + /* Lowest start address of the stack. */ + sljit_u8 *min_start; +}; + +/* Allocates a new stack. Returns NULL if unsuccessful. + Note: see sljit_create_compiler for the explanation of allocator_data. */ +SLJIT_API_FUNC_ATTRIBUTE struct sljit_stack* SLJIT_FUNC sljit_allocate_stack(sljit_uw start_size, sljit_uw max_size, void *allocator_data); +SLJIT_API_FUNC_ATTRIBUTE void SLJIT_FUNC sljit_free_stack(struct sljit_stack *stack, void *allocator_data); + +/* Can be used to increase (extend) or decrease (shrink) the stack + memory area. Returns with new_start if successful and NULL otherwise. + It always fails if new_start is less than min_start or greater or equal + than end fields. The fields of the stack are not changed if the returned + value is NULL (the current memory content is never lost). */ +SLJIT_API_FUNC_ATTRIBUTE sljit_u8 *SLJIT_FUNC sljit_stack_resize(struct sljit_stack *stack, sljit_u8 *new_start); + +#endif /* (defined SLJIT_UTIL_STACK && SLJIT_UTIL_STACK) */ + +#if !(defined SLJIT_INDIRECT_CALL && SLJIT_INDIRECT_CALL) + +/* Get the entry address of a given function. */ +#define SLJIT_FUNC_OFFSET(func_name) ((sljit_sw)func_name) + +#else /* !(defined SLJIT_INDIRECT_CALL && SLJIT_INDIRECT_CALL) */ + +/* All JIT related code should be placed in the same context (library, binary, etc.). */ + +#define SLJIT_FUNC_OFFSET(func_name) (*(sljit_sw*)(void*)func_name) + +/* For powerpc64, the function pointers point to a context descriptor. */ +struct sljit_function_context { + sljit_sw addr; + sljit_sw r2; + sljit_sw r11; +}; + +/* Fill the context arguments using the addr and the function. + If func_ptr is NULL, it will not be set to the address of context + If addr is NULL, the function address also comes from the func pointer. */ +SLJIT_API_FUNC_ATTRIBUTE void sljit_set_function_context(void** func_ptr, struct sljit_function_context* context, sljit_sw addr, void* func); + +#endif /* !(defined SLJIT_INDIRECT_CALL && SLJIT_INDIRECT_CALL) */ + +#if (defined SLJIT_EXECUTABLE_ALLOCATOR && SLJIT_EXECUTABLE_ALLOCATOR) +/* Free unused executable memory. The allocator keeps some free memory + around to reduce the number of OS executable memory allocations. + This improves performance since these calls are costly. However + it is sometimes desired to free all unused memory regions, e.g. + before the application terminates. */ +SLJIT_API_FUNC_ATTRIBUTE void sljit_free_unused_memory_exec(void); +#endif + +/* --------------------------------------------------------------------- */ +/* CPU specific functions */ +/* --------------------------------------------------------------------- */ + +/* The following function is a helper function for sljit_emit_op_custom. + It returns with the real machine register index ( >=0 ) of any SLJIT_R, + SLJIT_S and SLJIT_SP registers. + + Note: it returns with -1 for virtual registers (only on x86-32). */ + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_register_index(sljit_s32 reg); + +/* The following function is a helper function for sljit_emit_op_custom. + It returns with the real machine register index of any SLJIT_FLOAT register. + + Note: the index is always an even number on ARM (except ARM-64), MIPS, and SPARC. */ + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_float_register_index(sljit_s32 reg); + +/* Any instruction can be inserted into the instruction stream by + sljit_emit_op_custom. It has a similar purpose as inline assembly. + The size parameter must match to the instruction size of the target + architecture: + + x86: 0 < size <= 15. The instruction argument can be byte aligned. + Thumb2: if size == 2, the instruction argument must be 2 byte aligned. + if size == 4, the instruction argument must be 4 byte aligned. + Otherwise: size must be 4 and instruction argument must be 4 byte aligned. */ + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_custom(struct sljit_compiler *compiler, + void *instruction, sljit_s32 size); + +/* Define the currently available CPU status flags. It is usually used after an + sljit_emit_op_custom call to define which flags are set. */ + +SLJIT_API_FUNC_ATTRIBUTE void sljit_set_current_flags(struct sljit_compiler *compiler, + sljit_s32 current_flags); + +#endif /* _SLJIT_LIR_H_ */ |