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view gen.h @ 987:1f09994e92c5
Initial stab at implementing address error exceptions. Need to fill in the value of IR, undefined bits of last stack frame word and properly deal with address errors that occur during exception processing.
author | Michael Pavone <pavone@retrodev.com> |
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date | Tue, 26 Apr 2016 23:13:37 -0700 |
parents | a7774fc2de4b |
children | 2ec5e6eaf81d |
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#ifndef GEN_H_ #define GEN_H_ #include <stdint.h> #if defined(X86_64) || defined(X86_32) typedef uint8_t code_word; #define RESERVE_WORDS 5 //opcode + 4-byte displacement #else typedef uint32_t code_word; #define RESERVE_WORDS 4 //1 push + 1 ldr + 1bx + 1 constant #endif typedef code_word * code_ptr; #define CODE_ALLOC_SIZE (1024*1024) typedef struct { code_ptr cur; code_ptr last; uint32_t stack_off; } code_info; void check_alloc_code(code_info *code, uint32_t inst_size); void init_code_info(code_info *code); void call(code_info *code, code_ptr fun); void jmp(code_info *code, code_ptr dest); void jmp_r(code_info *code, uint8_t dst); //call a function and put the arguments in the appropriate place according to the host ABI void call_args(code_info *code, code_ptr fun, uint32_t num_args, ...); //like the above, but follows other aspects of the ABI like stack alignment //void call_args_abi(code_info *code, code_ptr fun, uint32_t num_args, ...); #define call_args_abi call_args void save_callee_save_regs(code_info *code); void restore_callee_save_regs(code_info *code); #endif //GEN_H_