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https://github.com/ringtailsoftware/uvm32.git
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105 lines
2.6 KiB
C
105 lines
2.6 KiB
C
#ifndef UVM32_H
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#define UVM32_H 1
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#include <stdint.h>
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#include <stdbool.h>
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#include "uvm32_sys.h"
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#define LIST_OF_UVM32_ERRS \
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X(UVM32_ERR_NONE) \
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X(UVM32_ERR_NOTREADY) \
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X(UVM32_ERR_MEM_RD) \
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X(UVM32_ERR_MEM_WR) \
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X(UVM32_ERR_BAD_SYSCALL) \
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X(UVM32_ERR_HUNG) \
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X(UVM32_ERR_INTERNAL_CORE) \
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X(UVM32_ERR_INTERNAL_STATE) \
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#define X(name) name,
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typedef enum {
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LIST_OF_UVM32_ERRS
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} uvm32_err_t;
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#undef X
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typedef enum {
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UVM32_EVT_ERR,
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UVM32_EVT_SYSCALL,
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UVM32_EVT_YIELD,
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UVM32_EVT_END,
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} uvm32_evt_typ_t;
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typedef enum {
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UVM32_SYSCALL_TYP_BUF_TERMINATED_WR, // data write from vm, NULL terminated string of bytes, in uvm32_evt_syscall_t.val.buf
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UVM32_SYSCALL_TYP_VOID, // no data
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UVM32_SYSCALL_TYP_U32_WR, // data write from vm, in uvm32_evt_syscall_t.val.u32
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UVM32_SYSCALL_TYP_U32_RD, // data read from vm, expects response in uvm32_evt_syscall_t.val.u32p
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} uvm32_syscall_typ_t;
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typedef uint32_t uvm32_user_syscall_code_t;
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// user supplied mapping from syscall to typed syscall
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typedef struct {
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uint32_t syscall;
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uvm32_user_syscall_code_t code;
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uvm32_syscall_typ_t typ;
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} uvm32_mapping_t;
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typedef struct {
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uint8_t *ptr;
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uint32_t len;
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} uvm32_evt_syscall_buf_t;
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typedef struct {
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uvm32_syscall_typ_t typ;
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uvm32_user_syscall_code_t code;
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union {
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uvm32_evt_syscall_buf_t buf;
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uint32_t u32;
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uint32_t *u32p;
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} val;
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} uvm32_evt_syscall_t;
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typedef struct {
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uvm32_err_t errcode;
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const char *errstr;
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} uvm32_evt_err_t;
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typedef struct {
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uvm32_evt_typ_t typ;
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union {
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uvm32_evt_syscall_t syscall;
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uvm32_evt_err_t err;
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} data;
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} uvm32_evt_t;
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#define MINIRV32_DECORATE static
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#define MINI_RV32_RAM_SIZE UVM32_MEMORY_SIZE
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#define MINIRV32_POSTEXEC(pc, ir, retval) {if (retval > 0) return 3;}
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#ifndef MINIRV32_IMPLEMENTATION
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#define MINIRV32_STEPPROTO
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#endif
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#include "mini-rv32ima.h"
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typedef enum {
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UVM32_STATUS_PAUSED,
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UVM32_STATUS_RUNNING,
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UVM32_STATUS_ERROR,
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UVM32_STATUS_ENDED,
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} uvm32_status_t;
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typedef struct {
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uvm32_status_t status;
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uvm32_err_t err;
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struct MiniRV32IMAState* core; // points at end of memory
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uint8_t memory[UVM32_MEMORY_SIZE];
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uvm32_evt_t ioevt; // for building up in callbacks
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const uvm32_mapping_t *mappings;
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uint32_t numMappings;
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} uvm32_state_t;
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void uvm32_init(uvm32_state_t *vmst, const uvm32_mapping_t *mappings, uint32_t numMappings);
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bool uvm32_load(uvm32_state_t *vmst, uint8_t *rom, int len);
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bool uvm32_hasEnded(const uvm32_state_t *vmst);
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uint32_t uvm32_run(uvm32_state_t *vmst, uvm32_evt_t *evt, uint32_t instr_meter);
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#endif
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