2d72cbec41
. add cpufeature detection of both . use it for both ipc and kernelcall traps, using a register for call number . SYSENTER/SYSCALL does not save any context, therefore userland has to save it . to accomodate multiple kernel entry/exit types, the entry type is recorded in the process struct. hitherto all types were interrupt (soft int, exception, hard int); now SYSENTER/SYSCALL is new, with the difference that context is not fully restored from proc struct when running the process again. this can't be done as some information is missing. . complication: cases in which the kernel has to fully change process context (i.e. sigreturn). in that case the exit type is changed from SYSENTER/SYSEXIT to soft-int (i.e. iret) and context is fully restored from the proc struct. this does mean the PC and SP must change, as the sysenter/sysexit userland code will otherwise try to restore its own context. this is true in the sigreturn case. . override all usage by setting libc_ipc=1
21 lines
427 B
CFEngine3
21 lines
427 B
CFEngine3
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include "kernel.h"
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struct proc
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member DIREG p_reg.di
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member SIREG p_reg.si
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member BPREG p_reg.fp
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member STREG p_reg.st
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member BXREG p_reg.bx
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member DXREG p_reg.dx
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member CXREG p_reg.cx
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member AXREG p_reg.retreg
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member RETADR p_reg.retadr
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member PCREG p_reg.pc
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member CSREG p_reg.cs
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member PSWREG p_reg.psw
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member SPREG p_reg.sp
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member P_CR3 p_seg.p_cr3
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member P_KERN_TRAP_STYLE p_seg.p_kern_trap_style
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member P_MAGIC p_magic
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