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Hardcode pagesize for arm64 in native iOS debugger

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This commit is contained in:
pancake 2015-10-12 19:17:41 +02:00
parent 16d9f68e82
commit f9b661f839
1 changed files with 17 additions and 12 deletions
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29
libr/io/p/io_mach.c
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@ -155,7 +155,7 @@ static int __read(RIO *io, RIODesc *fd, ut8 *buf, int len) {
return len; //(int)size;
}
static vm_address_t tsk_getpage(ut64 addr) {
static vm_address_t tsk_getpagebase(ut64 addr) {
vm_address_t a = addr;
a >>= 12;
a <<= 12;
@ -178,8 +178,13 @@ static int tsk_getperm(task_t task, vm_address_t addr) {
return 0;
}
static int tsk_pagesize(int len) {
static int tsk_pagesize(RIO *io, int len) {
#if __arm__ || __arm64__ || __aarch64__
int is_arm64 = (io && io->bits == 64);
int pagesize = is_arm64? 16384: 4096;
#else
int pagesize = getpagesize();
#endif
if (pagesize<1) pagesize = 4096;
if (len > pagesize) {
pagesize *= (1 + (len / pagesize));
@ -187,12 +192,12 @@ static int tsk_pagesize(int len) {
return pagesize;
}
static bool tsk_setperm(task_t task, vm_address_t addr, int len, int perm) {
static bool tsk_setperm(RIO *io, task_t task, vm_address_t addr, int len, int perm) {
mach_msg_type_number_t info_count = VM_REGION_BASIC_INFO_COUNT;
vm_region_flavor_t flavor = VM_REGION_BASIC_INFO;
vm_address_t region = (vm_address_t)addr;
vm_region_basic_info_data_t info;
vm_size_t region_size = tsk_pagesize(len);
vm_size_t region_size = tsk_pagesize(io, len);
#if 1
task_t t;
vm_region_64 (task, &region, &region_size, flavor, (vm_region_info_t)&info,
@ -207,7 +212,7 @@ static bool tsk_write(task_t task, vm_address_t addr, const ut8 *buf, int len) {
return vm_write (task, addr, _buf, _len) == KERN_SUCCESS;
}
static int mach_write_at(RIOMach *riom, const void *buf, int len, ut64 addr) {
static int mach_write_at(RIO *io, RIOMach *riom, const void *buf, int len, ut64 addr) {
vm_address_t vaddr = addr;
vm_address_t pageaddr;
vm_size_t pagesize;
@ -219,14 +224,14 @@ static int mach_write_at(RIOMach *riom, const void *buf, int len, ut64 addr) {
}
task = riom->task;
pageaddr = tsk_getpage (addr);
pagesize = tsk_pagesize (len);
pageaddr = tsk_getpagebase (addr);
pagesize = tsk_pagesize (io, len);
if (tsk_write (task, vaddr, buf, len)) {
return len;
}
operms = tsk_getperm (task, pageaddr);
if (!tsk_setperm (task, pageaddr, pagesize, VM_PROT_READ | VM_PROT_WRITE | VM_PROT_COPY)) {
if (!tsk_setperm (io, task, pageaddr, pagesize, VM_PROT_READ | VM_PROT_WRITE | VM_PROT_COPY)) {
perror ("setperm");
eprintf ("io.mach: cant set page perms for %d bytes at 0x%08"
PFMT64x"\n", (int)pagesize, (ut64)pageaddr);
@ -238,7 +243,7 @@ static int mach_write_at(RIOMach *riom, const void *buf, int len, ut64 addr) {
len = -1;
}
if (operms) {
if (!tsk_setperm (task, pageaddr, pagesize, operms)) {
if (!tsk_setperm (io, task, pageaddr, pagesize, operms)) {
eprintf ("io.mach: cant restore page perms\n");
return -1;
}
@ -247,7 +252,7 @@ static int mach_write_at(RIOMach *riom, const void *buf, int len, ut64 addr) {
}
static int __write(RIO *io, RIODesc *fd, const ut8 *buf, int len) {
return mach_write_at ((RIOMach*)fd->data, buf, len, io->off);
return mach_write_at (io, (RIOMach*)fd->data, buf, len, io->off);
}
static int __plugin_open(RIO *io, const char *file, ut8 many) {
@ -362,8 +367,8 @@ static int __system(RIO *io, RIODesc *fd, const char *cmd) {
if (!strncmp (cmd, "perm", 4)) {
int perm = r_str_rwx (cmd+4);
if (perm) {
int pagesize = tsk_pagesize(1);
tsk_setperm (riom->task, io->off, pagesize, perm);
int pagesize = tsk_pagesize(io, 1);
tsk_setperm (io, riom->task, io->off, pagesize, perm);
} else {
eprintf ("Usage: =!perm [rwx]\n");
}