/* SPDX-License-Identifier: MPL-2.0 */
.text
# Atomically loads a 32-bit integer value. This function works with exception
# handling and can recover from a page fault.
#
# Returns the loaded value or `!0u64` if failed to load.
.global __atomic_load_fallible
.type __atomic_load_fallible, @function
__atomic_load_fallible: # (ptr: *const u32) -> u64;
li t0, {SSTATUS_SUM}
csrs sstatus, t0
load:
lwu a0, (a0)
csrc sstatus, t0
ret
load_fault:
li a0, -1
csrc sstatus, t0
ret
.size __atomic_load_fallible, .-__atomic_load_fallible
.pushsection .ex_table, "a", @progbits
.balign 8
.quad load
.quad load_fault
.popsection