void swaddr_write(swaddr_t addr, size_t len, uint32_t data, uint8_t sreg) {
#ifdef DEBUG
assert(len == 1 || len == 2 || len == 4);
#endif
#ifdef SEGMENTATION
if (cpu.cr0.protect_enable)
addr = seg_translate(addr, sreg);
#endif
lnaddr_write(addr, len, data);
}
uint32_t swaddr_read(swaddr_t addr, size_t len, uint8_t sreg) {
#ifdef DEBUG
assert(len == 1 || len == 2 || len == 4);
#endif
#ifdef SEGMENTATION
if (cpu.cr0.protect_enable)
addr = seg_translate(addr, sreg);
#endif
return lnaddr_read(addr, len);
}
static
int
load_segment(struct addrspace *as, struct vnode *v,
off_t offset, vaddr_t vaddr,
size_t memsize, size_t filesize,
int is_executable)
{
KASSERT(vaddr < 0x80000000);
DEBUG(DB_VM, "Running load segment %p, size %d\n", (void*)vaddr, memsize);
struct iovec iov;
struct uio u;
int result;
if (filesize > memsize) {
DEBUG(DB_VM,"ELF: warning: segment filesize > segment memsize\n");
filesize = memsize;
}
DEBUG(DB_EXEC, "ELF: Loading %lu bytes to 0x%lx\n", (unsigned long) filesize, (unsigned long) vaddr);
struct segment *seg;
paddr_t kpaddr;
result = as_which_seg(as, vaddr, &seg);
if (result) return result;
result = seg_translate(seg, vaddr, &kpaddr);
if (result) return result;
(void) is_executable;
iov.iov_ubase = (userptr_t)PADDR_TO_KVADDR(kpaddr);
iov.iov_len = memsize; // length of the memory space
u.uio_iov = &iov;
u.uio_iovcnt = 1;
u.uio_resid = filesize; // amount to read from the file
u.uio_offset = offset;
u.uio_segflg = UIO_SYSSPACE;// is_executable ? UIO_USERISPACE : UIO_USERSPACE;
u.uio_rw = UIO_READ;
u.uio_space = NULL;
DEBUG(DB_VM,"ELF loading segment into %p(%p) as %p\n", (void*)PADDR_TO_KVADDR(kpaddr), (void*) kpaddr,(void*)vaddr);
result = VOP_READ(v, &u);
if (result) {
return result;
}
DEBUG(DB_VM, "\tDone loading\n");
return result;
}
static int cmd_page(char *args){
if(args == NULL){
printf("Please input a number!\n");
return 0;
}
char expre[32];
sscanf(args, "%s", expre);
swaddr_t addr = 0;
bool success = true;
addr = expr(expre, &success);
if(success == false) return 0;
lnaddr_t lnaddr = seg_translate(addr, R_SS);
printf("lnaddr = 0x%x\n", lnaddr);
page_debug(lnaddr);
return 0;
}
