void
runtime·raceread(uintptr addr)
{
if(!onstack(addr)) {
m->racecall = true;
runtime∕race·Read(g->racectx, (void*)addr, runtime·getcallerpc(&addr));
m->racecall = false;
}
}
void
runtime·racewrite(uintptr addr)
{
if(!onstack(addr)) {
m->racecall = true;
runtime∕race·Write(g->goid-1, (void*)addr, runtime·getcallerpc(&addr));
m->racecall = false;
}
}
static void
rangeaccess(void *addr, uintptr size, uintptr step, uintptr callpc, uintptr pc, bool write)
{
uintptr racectx;
if(!onstack((uintptr)addr)) {
m->racecall = true;
racectx = g->racectx;
if(callpc) {
if(callpc == (uintptr)runtime·lessstack)
runtime·callers(3, &callpc, 1);
runtime∕race·FuncEnter(racectx, (void*)callpc);
}
if(write)
runtime∕race·WriteRange(racectx, addr, size, step, (void*)pc);
else
runtime∕race·ReadRange(racectx, addr, size, step, (void*)pc);
if(callpc)
runtime∕race·FuncExit(racectx);
m->racecall = false;
}
}
static void
memoryaccess(void *addr, uintptr callpc, uintptr pc, bool write)
{
int64 goid;
if(!onstack((uintptr)addr)) {
m->racecall = true;
goid = g->goid-1;
if(callpc) {
if(callpc == (uintptr)runtime·lessstack ||
(callpc >= (uintptr)runtime·mheap.arena_start && callpc < (uintptr)runtime·mheap.arena_used))
runtime·callers(3, &callpc, 1);
runtime∕race·FuncEnter(goid, (void*)callpc);
}
if(write)
runtime∕race·Write(goid, addr, (void*)pc);
else
runtime∕race·Read(goid, addr, (void*)pc);
if(callpc)
runtime∕race·FuncExit(goid);
m->racecall = false;
}
}
static int
get_info(efi_guid_t *guid, uint64_t hw_inst, update_info **info)
{
efi_guid_t varguid = FWUPDATE_GUID;
char *varname = NULL;
char *guidstr = NULL;
int rc;
update_info *local;
int error;
rc = efi_guid_to_str(guid, &guidstr);
if (rc < 0)
return -1;
guidstr = onstack(guidstr, strlen(guidstr)+1);
rc = asprintf(&varname, "fwupdate-%s-%"PRIx64, guidstr, hw_inst);
if (rc < 0)
return -1;
varname = onstack(varname, strlen(varname)+1);
uint8_t *data = NULL;
size_t data_size = 0;
uint32_t attributes;
rc = efi_get_variable(varguid, varname, &data, &data_size, &attributes);
if (rc < 0) {
if (errno != ENOENT)
return -1;
local = calloc(1, sizeof (*local));
if (!local)
return -1;
local->update_info_version = UPDATE_INFO_VERSION;
local->guid = *guid;
local->hw_inst = hw_inst;
local->dp_ptr = calloc(1, 1024);
if (!local->dp_ptr) {
alloc_err:
error = errno;
free_info(local);
errno = error;
return -1;
}
ssize_t sz;
sz = efidp_make_end_entire((uint8_t *)local->dp_ptr, 1024);
if (sz < 0) {
rc = sz;
goto alloc_err;
}
*info = local;
return 0;
}
/* If our size is wrong, or our data is otherwise bad, try to delete
* the variable and create a new one. */
if (data_size < sizeof (*local) || !data) {
if (data)
free(data);
get_err:
rc = efi_del_variable(varguid, varname);
if (rc < 0)
return -1;
return get_info(guid, hw_inst, info);
}
local = (update_info *)data;
if (local->update_info_version != UPDATE_INFO_VERSION)
goto get_err;
ssize_t sz = efidp_size((efidp)local->dp);
if (sz < 0) {
free(data);
errno = EINVAL;
return -1;
}
efidp_header *dp = malloc((size_t)sz);
if (!dp) {
free(data);
errno = ENOMEM;
return -1;
}
memcpy(dp, local->dp, (size_t)sz);
local->dp_ptr = dp;
*info = local;
return 0;
}