[ts-7000] Reading memory using inline assemble causes segmentation fault

["carol9078" <>]

I'm alsot certainly missing the point, but why dows a simple memory
read of the JP6 setting address not work and cause a segmntation fault
and what can I do to fix it, I'm trying to write the smallest possible
program to go in the initial ramdisk image to read the jumper on
header 6 and decide which filesystem to boot on my TS7250, using the
normal includes and statically linking results in a huge file (400K)
so I thought I would try the inline assembler route:


#define JP6 0x22800000

int main(void)
{
        int ret;
        asm volatile (
                "ldrh %0, [ %1 ]\n"
                : "=r" (ret)
                : "r" (JP6)
                : "memory"
        );
        return ret;
}


./a.out
pc : [<000083d8>]    lr : [<2aadde44>]    Not tainted
sp : 7ffffe14  ip : 7ffffe28  fp : 7ffffe24
r10: 2abd9000  r9 : 000083c4  r8 : 00000001
r7 : 00008440  r6 : 7ffffe34  r5 : 2aac7e14  r4 : 00000000
r3 : 22800000  r2 : 7ffffe3c  r1 : 7ffffe34  r0 : 00000001
Flags: nZCv  IRQs on  FIQs on  Mode USER_32  Segment user
Control: C000317F  Table: 01770000  DAC: 00000015
Segmentation fault



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