feb43c5f37
the the original trapframe of the syscall, trap, or interrupt that entered the kernel. Before SMPng, ast's were handled via a psuedo trap at the end of doerti. With the SMPng commit, ast's were broken out into a separate ast() function that was called from doreti to match the behavior of other architectures. Unfortunately, when this was done, the p_md.md_regs member of curproc was not updateda in ast(), thus when signals are handled by userret() after an interrupt that returns to userland, we end up using a stale trapframe that will result in the registers from the old trapframe overwriting the real trapframe and smashing all the registers right before we return to usermode. The saved %cs:%eip from where we were in usermode are saved in the trapframe for example. |
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| .. | ||
| acpica | ||
| apm | ||
| bios | ||
| conf | ||
| i386 | ||
| ibcs2 | ||
| include | ||
| isa | ||
| linux | ||
| pci | ||
| svr4 | ||
| Makefile | ||