Hello,
I'm working with a Cortex-M3 target device and noticed that 0.9.31
clone() doesn't work. The library .config enables CONFIG_ARM7TDMI=y.
Putting aside the 2.6.33 Cortex-M3 kernel bugs, the
following code in libc/sysdeps/linux/arm/clone.S looks strange to me:
#if defined(THUMB1_ONLY)
...
#else
...
@ pick the function arg and call address off the stack and execute
ldr r0, [sp, #4]
mov lr, pc
^^^^^^^^^^^^^^^^^^^^^^^^^
ldr pc, [sp]
@ and we are done, passing the return value through r0
b HIDDEN_JUMPTARGET(_exit)
#endif
Where the clone() function returns? In my case, it crashes on the
"ldr pc, [sp]", as far as I can see.
Why not to use
mov r1, [sp]
blx r1
?
This works.
Could someone clarify?
Regards,
Sergei
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