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Implement makectx().

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This commit is contained in:
Olivier Houchard 2004-07-12 21:19:43 +00:00
parent 33f588f13b
commit 8b39400fc8
1 changed files with 19 additions and 0 deletions
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19
sys/arm/arm/machdep.c
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@ -407,3 +407,22 @@ sigreturn(td, uap)
}
/*
* Construct a PCB from a trapframe. This is called from kdb_trap() where
* we want to start a backtrace from the function that caused us to enter
* the debugger. We have the context in the trapframe, but base the trace
* on the PCB. The PCB doesn't have to be perfect, as long as it contains
* enough for a backtrace.
*/
void
makectx(struct trapframe *tf, struct pcb *pcb)
{
pcb->un_32.pcb32_r8 = tf->tf_r8;
pcb->un_32.pcb32_r9 = tf->tf_r9;
pcb->un_32.pcb32_r10 = tf->tf_r10;
pcb->un_32.pcb32_r11 = tf->tf_r11;
pcb->un_32.pcb32_r12 = tf->tf_r12;
pcb->un_32.pcb32_pc = tf->tf_pc;
pcb->un_32.pcb32_lr = tf->tf_usr_lr;
pcb->un_32.pcb32_sp = tf->tf_usr_sp;
}