Cristian-Bogdan SIRB 5aa5ce53bc Kernel: Fix the gettid syscall ...

syscall_handler was not actually updating the value in regs->eax, so the
gettid() was always returning 85: the value of regs->eax was not
actually updated, and it remained the one from Userland (the value of
SC_gettid).

The syscall_handler was modified to actually get a pointer to
RegisterState, so any changes to it will actually be saved.

NOTE: This was actually more of a compiler optimization:
On the SC_gettid flow, we saved in regs.eax the return value of
sys$gettid(), but the compiler discarded it, since it followed a return.
On a normal flow, the value of regs.eax was reused in
tracer->did_syscall, so the compiler actually updated the value.

2020-02-27 10:58:43 +01:00

6.1 KiB

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