81 lines
2.8 KiB
C
81 lines
2.8 KiB
C
/* spl_vm.h - SIR interpreter */
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#ifndef __SPL_VM_H__
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#define __SPL_VM_H__
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#include "include/core_vec.h"
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#include "spl_mcode.h"
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#include <stdint.h>
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#define SPL_STACK_CANARY ((spl_vm_val_t)0xDEADBEEFCAFEBABEull)
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typedef struct {
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uintptr_t saved_sp;
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uintptr_t saved_fp;
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uintptr_t saved_ip;
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spl_vm_val_t nargs;
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} spl_callframe_t;
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typedef VEC(spl_vm_val_t) spl_stack_vec_t;
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typedef VEC(spl_callframe_t) spl_frame_vec_t;
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typedef struct spl_vm {
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spl_stack_vec_t stacks;
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spl_frame_vec_t frames;
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uintptr_t gp; // global pointer
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uintptr_t sp; // stack pointer
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uintptr_t fp; // frame pointer
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uintptr_t cp; // call pointer
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uintptr_t ip; // instr pointer
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int exit_code;
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int trace; /* non-zero to print each instruction */
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int debug; /* non-zero to enable canary checks */
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int debug_addr; /* non-zero to check for low-address memory access */
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int skip_bp; /* non-zero: run_once 忽略下一次断点（continue 越过当前断点指令） */
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VEC(usize) breakpoints; /* ip 断点（执行到该指令前暂停，run_once 返回 2） */
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VEC(char *) fn_breakpoints; /* 函数名断点（CALL/CALLI 目标函数入口暂停） */
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spl_prog_t *prog;
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char error_msg[1024];
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struct {
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uintptr_t max_stack_depth;
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uintptr_t max_call_depth;
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} config;
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} spl_vm_t;
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/* Initialize VM with default sizes (SPL_DEFAULT_STACK_SIZE /
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* SPL_DEFAULT_CALL_DEPTH) */
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void spl_vm_init(spl_vm_t *vm);
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/* Initialize VM with custom sizes (pass 0 to use defaults) */
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void spl_vm_init_ex(spl_vm_t *vm, int stack_size, int call_depth);
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/* Free dynamically allocated memory in VM */
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void spl_vm_drop(spl_vm_t *vm);
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int spl_vm_addr_valid(uintptr_t p, usize size);
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int spl_vm_load_prog(spl_vm_t *vm, spl_prog_t *prog);
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int spl_vm_prepare(spl_vm_t *vm, const char *entry, int argc, const char **argv, const char **envp);
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/* Enable/disable instruction-level tracing */
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void spl_vm_set_trace(spl_vm_t *vm, int enabled);
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/* Enable/disable debug mode (stack canary protection) */
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void spl_vm_set_debug(spl_vm_t *vm, int enabled);
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int spl_vm_run_once(spl_vm_t *vm);
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int spl_vm_run_until(spl_vm_t *vm, size_t step);
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/* 断点：ip 断点 / 函数名断点（CALL/CALLI 目标函数入口）。命中时 run_once 返回 2。 */
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void spl_vm_add_breakpoint(spl_vm_t *vm, usize ip);
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void spl_vm_add_breakpoint_fn(spl_vm_t *vm, const char *name);
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void spl_vm_clear_breakpoints(spl_vm_t *vm);
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/* 让 run_once 执行当前指令（忽略一次断点命中）；continue 越过当前断点用 */
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void spl_vm_skip_breakpoint(spl_vm_t *vm);
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void spl_vm_dump_instr(spl_vm_t *vm, spl_vm_val_t ip);
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void spl_vm_stackdump(spl_vm_t *vm, spl_vm_val_t sp);
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int spl_vm_backtrace(spl_vm_t *vm, spl_vm_val_t fp);
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#endif /* __SPL_VM_H__ */
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