imxrt/syscalls: Don't touch r9 at all
@@ -271,7 +271,7 @@ _start_1:
.type _syscallend, %function
_syscall_dispatch:
- stmdb sp!, {r4-r9}
+ stmdb sp!, {r4-r8}
mrs r0, psp
ldmia r0!, {r1-r8}
@@ -316,7 +316,7 @@ _syscallend:
stmdb lr!, {r1-r8}
msr psp, lr
- ldmia sp!, {r4-r9}
+ ldmia sp!, {r4-r8}
/* Switch stacks */
mov r0, #7
