mirror of
https://github.com/ringtailsoftware/uvm32.git
synced 2026-06-06 06:53:39 +00:00
Rework syscall ABI.
Syscalls now accept two parameters, allowing for things like "int count = read(buf, len)" Rather than providing safe signatures for syscalls, the user is now given helper functions to safely parse incoming values, c-strings and slices.
This commit is contained in:
Toby Jaffey
parent
f046a590c0
commit
76fba39a21
28 changed files with 543 additions and 537 deletions
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@ -1,11 +1,12 @@
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// Definitions needed by both host and target
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// syscalls for exposed host functions, start at 0
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#define UVM32_SYSCALL_PRINTC 0x00000000
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#define UVM32_SYSCALL_PUTC 0x00000000
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#define UVM32_SYSCALL_GETC 0x00000001
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#define UVM32_SYSCALL_PRINT 0x00000002
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#define UVM32_SYSCALL_PRINTLN 0x00000003
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#define UVM32_SYSCALL_PRINTD 0x00000004
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#define UVM32_SYSCALL_PRINTX 0x00000005
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#define UVM32_SYSCALL_PRINTDEC 0x00000004
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#define UVM32_SYSCALL_PRINTHEX 0x00000005
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#define UVM32_SYSCALL_MILLIS 0x00000006
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#define UVM32_SYSCALL_PRINTBUF 0x00000007
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@ -2,43 +2,30 @@
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#include "uvm32.h"
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#include "common/uvm32_common_custom.h"
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// Precompiled binary program to print integers
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// This code expects to print via syscall 0x13C (UVM32_SYSCALL_PRINTDEC in common/uvm32_common_custom.h)
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uint8_t rom[] = {
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0x23, 0x26, 0x11, 0x00, 0xef, 0x00, 0xc0, 0x00, 0xb7, 0x08, 0x00, 0x01,
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0x73, 0x00, 0x00, 0x00, 0x37, 0xf5, 0xff, 0xff, 0xb7, 0x15, 0x00, 0x00,
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0x37, 0xe6, 0xff, 0xff, 0x13, 0x07, 0xf0, 0x01, 0xb7, 0x47, 0x00, 0x00,
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0xb7, 0x06, 0x00, 0x01, 0x13, 0x08, 0xd5, 0xcc, 0x93, 0x82, 0x35, 0x33,
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0x13, 0x03, 0x76, 0xe6, 0x93, 0x83, 0x35, 0xb3, 0x13, 0x86, 0x16, 0x00,
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0x63, 0xc8, 0x02, 0x09, 0x13, 0x0e, 0x03, 0x00, 0x63, 0xca, 0x63, 0x06,
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0x93, 0x0e, 0x00, 0x00, 0x93, 0x05, 0x00, 0x00, 0x13, 0x0f, 0x00, 0x00,
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0x93, 0x0f, 0x00, 0x00, 0x93, 0x06, 0x00, 0x02, 0x13, 0x85, 0x06, 0xfe,
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0x63, 0x62, 0xa7, 0x04, 0x33, 0x85, 0xd5, 0x01, 0x63, 0xee, 0xa7, 0x02,
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0x13, 0x05, 0x00, 0x00, 0x93, 0x08, 0x06, 0x00, 0x33, 0x8f, 0xef, 0x03,
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0xb3, 0x8f, 0xd5, 0x41, 0x73, 0x00, 0x00, 0x00, 0x13, 0x5f, 0xbf, 0x40,
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0xb3, 0x8f, 0xcf, 0x01, 0x33, 0x0f, 0x0f, 0x01, 0xb3, 0x85, 0xff, 0x03,
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0x93, 0xd5, 0xc5, 0x00, 0x33, 0x05, 0xef, 0x03, 0x93, 0x5e, 0xc5, 0x00,
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0x93, 0x86, 0x16, 0x00, 0x6f, 0xf0, 0xdf, 0xfb, 0x13, 0x85, 0x06, 0x00,
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0x93, 0x08, 0x00, 0x00, 0x73, 0x00, 0x00, 0x00, 0x13, 0x0e, 0x1e, 0x09,
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0xe3, 0xda, 0xc3, 0xf9, 0x13, 0x05, 0xa0, 0x00, 0x93, 0x08, 0x00, 0x00,
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0x73, 0x00, 0x00, 0x00, 0x13, 0x08, 0x98, 0x19, 0xe3, 0xdc, 0x02, 0xf7,
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0x37, 0x05, 0x00, 0x80, 0x13, 0x05, 0x05, 0x0e, 0x93, 0x08, 0x30, 0x00,
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0x73, 0x00, 0x00, 0x00, 0x67, 0x80, 0x00, 0x00, 0x48, 0x65, 0x6c, 0x6c,
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0x6f, 0x20, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x00
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};
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// Create an identifier for our host handler
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typedef enum {
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F_PRINTDEC,
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F_PRINTLN,
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F_PUTC,
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} f_code_t;
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// Map VM syscall UVM32_SYSCALL_PRINTDEC to F_PRINTDEC, tell VM to expect write of a U32
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const uvm32_mapping_t env[] = {
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{ UVM32_SYSCALL_PRINTDEC, F_PRINTDEC, UVM32_SYSCALL_TYP_U32_WR },
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{ UVM32_SYSCALL_PUTC, F_PUTC, UVM32_SYSCALL_TYP_U32_WR },
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{ UVM32_SYSCALL_PRINTLN, F_PRINTLN, UVM32_SYSCALL_TYP_BUF_TERMINATED_WR },
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0x73, 0x00, 0x00, 0x00, 0x13, 0x01, 0x01, 0xff, 0x23, 0x26, 0x81, 0x00,
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0x37, 0xf5, 0xff, 0xff, 0xb7, 0x15, 0x00, 0x00, 0x37, 0xe6, 0xff, 0xff,
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0x13, 0x07, 0xf0, 0x01, 0xb7, 0x47, 0x00, 0x00, 0xb7, 0x06, 0x00, 0x01,
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0x13, 0x08, 0xd5, 0xcc, 0x93, 0x82, 0x35, 0x33, 0x13, 0x03, 0x76, 0xe6,
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0x93, 0x83, 0x35, 0xb3, 0x13, 0x86, 0x16, 0x00, 0x63, 0xce, 0x02, 0x09,
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0x13, 0x0e, 0x03, 0x00, 0x63, 0xce, 0x63, 0x06, 0x93, 0x0f, 0x00, 0x00,
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0x13, 0x0f, 0x00, 0x00, 0x13, 0x04, 0x00, 0x00, 0x93, 0x0e, 0x00, 0x00,
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0x93, 0x06, 0x00, 0x02, 0x13, 0x85, 0x06, 0xfe, 0x63, 0x64, 0xa7, 0x04,
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0x33, 0x05, 0xff, 0x01, 0x63, 0xe0, 0xa7, 0x04, 0x13, 0x05, 0x00, 0x00,
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0x93, 0x05, 0x00, 0x00, 0x93, 0x08, 0x06, 0x00, 0xb3, 0x8e, 0x8e, 0x02,
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0x33, 0x0f, 0xff, 0x41, 0x13, 0xd4, 0xbe, 0x40, 0xb3, 0x0e, 0xcf, 0x01,
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0x73, 0x00, 0x00, 0x00, 0x33, 0x04, 0x04, 0x01, 0x33, 0x85, 0xde, 0x03,
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0x13, 0x5f, 0xc5, 0x00, 0x33, 0x05, 0x84, 0x02, 0x93, 0x5f, 0xc5, 0x00,
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0x93, 0x86, 0x16, 0x00, 0x6f, 0xf0, 0x9f, 0xfb, 0x13, 0x85, 0x06, 0x00,
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0x93, 0x05, 0x00, 0x00, 0x93, 0x08, 0x00, 0x00, 0x73, 0x00, 0x00, 0x00,
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0x13, 0x0e, 0x1e, 0x09, 0xe3, 0xd6, 0xc3, 0xf9, 0x13, 0x05, 0xa0, 0x00,
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0x93, 0x05, 0x00, 0x00, 0x93, 0x08, 0x00, 0x00, 0x73, 0x00, 0x00, 0x00,
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0x13, 0x08, 0x98, 0x19, 0xe3, 0xd6, 0x02, 0xf7, 0x37, 0x05, 0x00, 0x80,
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0x13, 0x05, 0x05, 0x10, 0x93, 0x08, 0x30, 0x00, 0x93, 0x05, 0x00, 0x00,
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0x73, 0x00, 0x00, 0x00, 0x03, 0x24, 0xc1, 0x00, 0x13, 0x01, 0x01, 0x01,
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0x67, 0x80, 0x00, 0x00, 0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x77, 0x6f,
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0x72, 0x6c, 0x64, 0x00
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};
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uvm32_state_t vmst;
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@ -69,18 +56,17 @@ void loop(void) {
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isrunning = false;
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break;
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case UVM32_EVT_SYSCALL: // vm has paused to handle UVM32_SYSCALL
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switch((f_code_t)evt.data.syscall.code) {
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case F_PRINTDEC:
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Serial.println(evt.data.syscall.val.u32);
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switch(evt.data.syscall.code) {
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case UVM32_SYSCALL_PUTC:
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Serial.print((char)uvm32_getval(&vmst, &evt, ARG0));
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break;
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case F_PUTC:
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Serial.print((char)evt.data.syscall.val.u32);
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break;
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case F_PRINTLN:
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for (int i=0;i<evt.data.syscall.val.buf.len;i++) {
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Serial.print((char)evt.data.syscall.val.buf.ptr[i]);
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}
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case UVM32_SYSCALL_PRINTLN: {
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const char *str = uvm32_getcstr(&vmst, &evt, ARG0);
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Serial.print(str);
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Serial.println("");
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} break;
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default:
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Serial.println("Unhandled syscall");
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break;
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}
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break;
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@ -95,7 +81,7 @@ void loop(void) {
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} else {
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Serial.println("Starting VM");
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// setup vm
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uvm32_init(&vmst, env, sizeof(env) / sizeof(env[0]));
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uvm32_init(&vmst);
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uvm32_load(&vmst, rom, sizeof(rom));
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isrunning = true;
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delay(2000);
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@ -1,13 +1,37 @@
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#include "config.h"
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#define MINIRV32_IMPLEMENTATION
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#include "uvm32.h"
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#include <stdio.h>
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#include <string.h>
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#ifndef UVM32_MEMORY_SIZE
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#error Define UVM32_MEMORY_SIZE
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#endif
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#define UVM32_NULL (void *)0
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// On an invalid operation, an error is set in uvm32_state_t, but a valid pointer still needs to be temporarily used
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static uint32_t garbage;
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#ifndef UVM32_MEMCPY
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#define UVM32_MEMCPY uvm32_memcpy
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void uvm32_memcpy(void *dst, const void *src, int len) {
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uint8_t *d = (uint8_t *)dst;
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const uint8_t *s = (const uint8_t *)src;
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while(len--) {
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*(d++) = *(s++);
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}
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}
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#endif
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#ifndef UVM32_MEMSET
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#define UVM32_MEMSET uvm32_memset
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void uvm32_memset(void *buf, int c, int len) {
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uint8_t *b = (uint8_t *)buf;
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while(len--) {
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*(b++) = c;
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}
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}
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#endif
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#include "mini-rv32ima.h"
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#define X(name) #name,
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@ -32,79 +56,85 @@ static void setStatus(uvm32_state_t *vmst, uvm32_status_t newStatus) {
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}
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static void setStatusErr(uvm32_state_t *vmst, uvm32_err_t err) {
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setStatus(vmst, UVM32_STATUS_ERROR);
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vmst->err = err;
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// if already in error state, stay in the first error state
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if (vmst->status != UVM32_STATUS_ERROR) {
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setStatus(vmst, UVM32_STATUS_ERROR);
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vmst->err = err;
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}
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}
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void uvm32_init(uvm32_state_t *vmst, const uvm32_mapping_t *mappings, uint32_t numMappings) {
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void uvm32_init(uvm32_state_t *vmst) {
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UVM32_MEMSET(vmst, 0x00, sizeof(uvm32_state_t));
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vmst->status = UVM32_STATUS_PAUSED;
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memset(vmst->memory, 0x00, UVM32_MEMORY_SIZE);
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// The core lives at the end of RAM.
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vmst->core = (struct MiniRV32IMAState*)(vmst->memory + UVM32_MEMORY_SIZE - sizeof(struct MiniRV32IMAState));
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vmst->core->pc = MINIRV32_RAM_IMAGE_OFFSET;
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vmst->core.pc = MINIRV32_RAM_IMAGE_OFFSET;
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// https://projectf.io/posts/riscv-cheat-sheet/
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// setup stack pointer
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// la sp, _sstack
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// addi sp,sp,-16
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vmst->core->regs[2] = (MINIRV32_RAM_IMAGE_OFFSET + UVM32_MEMORY_SIZE - sizeof(struct MiniRV32IMAState)) - 16;
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vmst->core->regs[10] = 0x00; //hart ID
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vmst->core->regs[11] = 0;
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vmst->core->extraflags |= 3; // Machine-mode.
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vmst->mappings = mappings;
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vmst->numMappings = numMappings;
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vmst->core.regs[2] = (MINIRV32_RAM_IMAGE_OFFSET + UVM32_MEMORY_SIZE) - 16;
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vmst->core.regs[10] = 0x00; //hart ID
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vmst->core.regs[11] = 0;
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vmst->core.extraflags |= 3; // Machine-mode.
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}
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bool uvm32_load(uvm32_state_t *vmst, uint8_t *rom, int len) {
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// RAM needs at least image then MiniRV32IMAState (core)
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if (len > UVM32_MEMORY_SIZE - sizeof(struct MiniRV32IMAState)) {
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if (len > UVM32_MEMORY_SIZE) {
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// too big
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return false;
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}
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memcpy(vmst->memory, rom, len);
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UVM32_MEMCPY(vmst->memory, rom, len);
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return true;
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}
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// Read C-string up to terminator and return len,ptr
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static void get_safeptr_terminated(uvm32_state_t *vmst, uint32_t addr, uint8_t terminator, uvm32_evt_syscall_buf_t *buf) {
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bool get_safeptr_null_terminated(uvm32_state_t *vmst, uint32_t addr, uvm32_evt_syscall_buf_t *buf) {
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uint32_t ptrstart = addr - MINIRV32_RAM_IMAGE_OFFSET;
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uint32_t p = ptrstart;
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if (p >= UVM32_MEMORY_SIZE) {
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setStatusErr(vmst, UVM32_ERR_MEM_RD);
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buf->ptr = NULL;
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buf->ptr = (uint8_t *)UVM32_NULL;
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buf->len = 0;
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return;
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return false;
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}
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while(vmst->memory[p] != terminator) {
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while(vmst->memory[p] != '\0') {
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p++;
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if (p >= UVM32_MEMORY_SIZE) {
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setStatusErr(vmst, UVM32_ERR_MEM_RD);
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buf->ptr = NULL;
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buf->ptr = (uint8_t *)UVM32_NULL;
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buf->len = 0;
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return;
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return false;
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}
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}
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buf->ptr = &vmst->memory[ptrstart];
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buf->len = p - ptrstart;
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return true;
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}
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#if 0
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static void get_safeptr(uvm32_state_t *vmst, uint32_t addr, uint32_t len, uvm32_evt_syscall_buf_t *buf) {
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bool get_safeptr(uvm32_state_t *vmst, uint32_t addr, uint32_t len, uvm32_evt_syscall_buf_t *buf) {
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uint32_t ptrstart = addr - MINIRV32_RAM_IMAGE_OFFSET;
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if (ptrstart + len >= UVM32_MEMORY_SIZE) {
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if ((ptrstart > UVM32_MEMORY_SIZE) || (ptrstart + len >= UVM32_MEMORY_SIZE)) {
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setStatusErr(vmst, UVM32_ERR_MEM_RD);
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buf->ptr = (uint8_t *)UVM32_NULL;
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buf->len = 0;
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return false;
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}
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buf->ptr = &vmst->memory[ptrstart];
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buf->len = len;
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return true;
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}
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#endif
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void uvm32_clearError(uvm32_state_t *vmst) {
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if (vmst->status == UVM32_STATUS_ERROR) {
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// vm is in an error state, but user wants to continue
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// most likely after UVM32_ERR_HUNG
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vmst->status = UVM32_STATUS_PAUSED;
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}
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}
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uint32_t uvm32_run(uvm32_state_t *vmst, uvm32_evt_t *evt, uint32_t instr_meter) {
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uint32_t num_instr = 0;
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// uvm32_evt_syscall_buf_t b;
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if (vmst->status != UVM32_STATUS_PAUSED) {
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setStatusErr(vmst, UVM32_ERR_NOTREADY);
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@ -118,59 +148,30 @@ uint32_t uvm32_run(uvm32_state_t *vmst, uvm32_evt_t *evt, uint32_t instr_meter)
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while(vmst->status == UVM32_STATUS_RUNNING) {
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uint64_t elapsedUs = 1;
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uint32_t ret;
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ret = MiniRV32IMAStep(vmst, vmst->core, vmst->memory, 0, elapsedUs, 1);
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ret = MiniRV32IMAStep(vmst, &vmst->core, vmst->memory, 0, elapsedUs, 1);
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if (3 == ret) {
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const uint32_t syscall = vmst->core->regs[17]; // a7
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uint32_t value = vmst->core->regs[10]; // a0
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bool syscall_valid = false;
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// Fetch registers used by syscall
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const uint32_t syscall = vmst->core.regs[17]; // a7
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// on exception we should jump to mtvec, but we handle directly
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// and skip over the ecall instruction
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vmst->core->pc += 4;
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vmst->core.pc += 4;
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switch(syscall) {
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// inbuilt syscalls
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case UVM32_SYSCALL_HALT:
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setStatus(vmst, UVM32_STATUS_ENDED);
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syscall_valid = true;
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break;
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case UVM32_SYSCALL_YIELD:
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vmst->ioevt.typ = UVM32_EVT_YIELD;
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setStatus(vmst, UVM32_STATUS_PAUSED);
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syscall_valid = true;
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break;
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// user defined syscalls
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default:
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// search in mappings
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for (int i=0;i<vmst->numMappings;i++) {
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if (syscall == vmst->mappings[i].syscall) {
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// setup ioevt.data according to mapping typ
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switch(vmst->mappings[i].typ) {
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case UVM32_SYSCALL_TYP_VOID:
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break;
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case UVM32_SYSCALL_TYP_U32_WR:
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vmst->ioevt.data.syscall.val.u32 = value;
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break;
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case UVM32_SYSCALL_TYP_BUF_TERMINATED_WR:
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get_safeptr_terminated(vmst, value, 0x00, &vmst->ioevt.data.syscall.val.buf);
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break;
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case UVM32_SYSCALL_TYP_U32_RD:
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// pass link to r1 for user function to update
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||||
vmst->ioevt.data.syscall.val.u32p = &vmst->core->regs[11];
|
||||
break;
|
||||
}
|
||||
vmst->ioevt.typ = UVM32_EVT_SYSCALL;
|
||||
vmst->ioevt.data.syscall.code = vmst->mappings[i].code;
|
||||
vmst->ioevt.data.syscall.typ = vmst->mappings[i].typ;
|
||||
setStatus(vmst, UVM32_STATUS_PAUSED);
|
||||
syscall_valid = true;
|
||||
break; // stop searching
|
||||
}
|
||||
}
|
||||
// no mapping found
|
||||
if (!syscall_valid) {
|
||||
printf("BADSYS %08x halt=%08x YIELD=%08x\n", syscall, UVM32_SYSCALL_HALT, UVM32_SYSCALL_YIELD);
|
||||
setStatusErr(vmst, UVM32_ERR_BAD_SYSCALL);
|
||||
}
|
||||
// user defined syscalls
|
||||
vmst->ioevt.typ = UVM32_EVT_SYSCALL;
|
||||
vmst->ioevt.data.syscall.code = syscall;
|
||||
vmst->ioevt.data.syscall.ret = &vmst->core.regs[12]; // a2
|
||||
vmst->ioevt.data.syscall.params[0] = &vmst->core.regs[10]; // a0
|
||||
vmst->ioevt.data.syscall.params[1] = &vmst->core.regs[11]; // a1
|
||||
setStatus(vmst, UVM32_STATUS_PAUSED);
|
||||
break;
|
||||
}
|
||||
} else if (ret != 0) {
|
||||
|
|
@ -197,7 +198,7 @@ printf("BADSYS %08x halt=%08x YIELD=%08x\n", syscall, UVM32_SYSCALL_HALT, UVM32_
|
|||
// an event is ready
|
||||
if (vmst->status == UVM32_STATUS_PAUSED) {
|
||||
// send back the built up event
|
||||
memcpy(evt, &vmst->ioevt, sizeof(uvm32_evt_t));
|
||||
UVM32_MEMCPY(evt, &vmst->ioevt, sizeof(uvm32_evt_t));
|
||||
return num_instr;
|
||||
} else {
|
||||
if (vmst->status == UVM32_STATUS_ERROR) {
|
||||
|
|
@ -214,4 +215,54 @@ bool uvm32_hasEnded(const uvm32_state_t *vmst) {
|
|||
return vmst->status == UVM32_STATUS_ENDED;
|
||||
}
|
||||
|
||||
static uint32_t *arg_to_ptr(uvm32_state_t *vmst, uvm32_evt_t *evt, uvm32_arg_t arg) {
|
||||
switch(arg) {
|
||||
case ARG0:
|
||||
return evt->data.syscall.params[0];
|
||||
break;
|
||||
case ARG1:
|
||||
return evt->data.syscall.params[1];
|
||||
break;
|
||||
case RET:
|
||||
return evt->data.syscall.ret;
|
||||
break;
|
||||
default:
|
||||
// if something invalid is passed to arg, we should never crash
|
||||
// return a pointer to something readable
|
||||
setStatusErr(vmst, UVM32_ERR_ARGS);
|
||||
garbage = 0;
|
||||
return &garbage;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
void uvm32_setval(uvm32_state_t *vmst, uvm32_evt_t *evt, uvm32_arg_t arg, uint32_t val) {
|
||||
*arg_to_ptr(vmst, evt, arg) = val;
|
||||
}
|
||||
|
||||
uint32_t uvm32_getval(uvm32_state_t *vmst, uvm32_evt_t *evt, uvm32_arg_t arg) {
|
||||
return *arg_to_ptr(vmst, evt, arg);
|
||||
}
|
||||
|
||||
const char *uvm32_getcstr(uvm32_state_t *vmst, uvm32_evt_t *evt, uvm32_arg_t arg) {
|
||||
uvm32_evt_syscall_buf_t scb;
|
||||
if (get_safeptr_null_terminated(vmst, uvm32_getval(vmst, evt, arg), &scb)) {
|
||||
return (const char *)scb.ptr; // we know the buffer in cpu memory is null terminated, so safe to pass back
|
||||
} else {
|
||||
setStatusErr(vmst, UVM32_ERR_MEM_RD);
|
||||
garbage = 0;
|
||||
return (const char *)&garbage;
|
||||
}
|
||||
}
|
||||
|
||||
uvm32_evt_syscall_buf_t uvm32_getbuf(uvm32_state_t *vmst, uvm32_evt_t *evt, uvm32_arg_t argPtr, uvm32_arg_t argLen) {
|
||||
uvm32_evt_syscall_buf_t scb;
|
||||
if (!get_safeptr(vmst, uvm32_getval(vmst, evt, argPtr), uvm32_getval(vmst, evt, argLen), &scb)) {
|
||||
setStatusErr(vmst, UVM32_ERR_MEM_RD);
|
||||
garbage = 0;
|
||||
scb.ptr = (uint8_t *)&garbage;
|
||||
scb.len = 0;
|
||||
}
|
||||
return scb;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -14,6 +14,7 @@
|
|||
X(UVM32_ERR_HUNG) \
|
||||
X(UVM32_ERR_INTERNAL_CORE) \
|
||||
X(UVM32_ERR_INTERNAL_STATE) \
|
||||
X(UVM32_ERR_ARGS) \
|
||||
|
||||
#define X(name) name,
|
||||
typedef enum {
|
||||
|
|
@ -28,42 +29,17 @@ typedef enum {
|
|||
UVM32_EVT_END,
|
||||
} uvm32_evt_typ_t;
|
||||
|
||||
typedef enum {
|
||||
UVM32_SYSCALL_TYP_BUF_TERMINATED_WR, // data write from vm, NULL terminated string of bytes, in uvm32_evt_syscall_t.val.buf
|
||||
UVM32_SYSCALL_TYP_VOID, // no data
|
||||
UVM32_SYSCALL_TYP_U32_WR, // data write from vm, in uvm32_evt_syscall_t.val.u32
|
||||
UVM32_SYSCALL_TYP_U32_RD, // data read from vm, expects response in uvm32_evt_syscall_t.val.u32p
|
||||
} uvm32_syscall_typ_t;
|
||||
|
||||
typedef uint32_t uvm32_user_syscall_code_t;
|
||||
|
||||
// user supplied mapping from syscall to typed syscall
|
||||
typedef struct {
|
||||
uint32_t syscall;
|
||||
uvm32_user_syscall_code_t code;
|
||||
uvm32_syscall_typ_t typ;
|
||||
} uvm32_mapping_t;
|
||||
|
||||
typedef struct {
|
||||
uint8_t *ptr;
|
||||
uint32_t len;
|
||||
} uvm32_evt_syscall_buf_t;
|
||||
|
||||
typedef struct {
|
||||
uvm32_syscall_typ_t typ;
|
||||
uvm32_user_syscall_code_t code;
|
||||
union {
|
||||
uvm32_evt_syscall_buf_t buf;
|
||||
uint32_t u32;
|
||||
uint32_t *u32p;
|
||||
} val;
|
||||
} uvm32_evt_syscall_t;
|
||||
|
||||
typedef struct {
|
||||
uvm32_err_t errcode;
|
||||
const char *errstr;
|
||||
} uvm32_evt_err_t;
|
||||
|
||||
typedef struct {
|
||||
uint32_t code; // syscall number
|
||||
uint32_t *ret;
|
||||
uint32_t *params[2];
|
||||
} uvm32_evt_syscall_t;
|
||||
|
||||
typedef struct {
|
||||
uvm32_evt_typ_t typ;
|
||||
union {
|
||||
|
|
@ -90,16 +66,33 @@ typedef enum {
|
|||
typedef struct {
|
||||
uvm32_status_t status;
|
||||
uvm32_err_t err;
|
||||
struct MiniRV32IMAState* core; // points at end of memory
|
||||
struct MiniRV32IMAState core;
|
||||
uint8_t memory[UVM32_MEMORY_SIZE];
|
||||
uvm32_evt_t ioevt; // for building up in callbacks
|
||||
const uvm32_mapping_t *mappings;
|
||||
uint32_t numMappings;
|
||||
} uvm32_state_t;
|
||||
|
||||
void uvm32_init(uvm32_state_t *vmst, const uvm32_mapping_t *mappings, uint32_t numMappings);
|
||||
void uvm32_init(uvm32_state_t *vmst);
|
||||
bool uvm32_load(uvm32_state_t *vmst, uint8_t *rom, int len);
|
||||
bool uvm32_hasEnded(const uvm32_state_t *vmst);
|
||||
uint32_t uvm32_run(uvm32_state_t *vmst, uvm32_evt_t *evt, uint32_t instr_meter);
|
||||
|
||||
// convenience for getptr
|
||||
typedef struct {
|
||||
uint8_t *ptr;
|
||||
uint32_t len;
|
||||
} uvm32_evt_syscall_buf_t;
|
||||
|
||||
typedef enum {
|
||||
ARG0,
|
||||
ARG1,
|
||||
RET
|
||||
} uvm32_arg_t;
|
||||
|
||||
uint32_t uvm32_getval(uvm32_state_t *vmst, uvm32_evt_t *evt, uvm32_arg_t);
|
||||
const char *uvm32_getcstr(uvm32_state_t *vmst, uvm32_evt_t *evt, uvm32_arg_t);
|
||||
void uvm32_setval(uvm32_state_t *vmst, uvm32_evt_t *evt, uvm32_arg_t, uint32_t val);
|
||||
uvm32_evt_syscall_buf_t uvm32_getbuf(uvm32_state_t *vmst, uvm32_evt_t *evt, uvm32_arg_t argPtr, uvm32_arg_t argLen);
|
||||
void uvm32_clearError(uvm32_state_t *vmst);
|
||||
|
||||
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue