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5206bca10a
- %fs register is added to trapframe and saved/restored upon kernel entry/exit. - Per-cpu pages are no longer mapped at the same virtual address. - Each cpu now has a separate gdt selector table. A new segment selector is added to point to per-cpu pages, per-cpu global variables are now accessed through this new selector (%fs). The selectors in gdt table are rearranged for cache line optimization. - fask_vfork is now on as default for both UP and SMP. - Some aio code cleanup. Reviewed by: Alan Cox <alc@cs.rice.edu> John Dyson <dyson@iquest.net> Julian Elischer <julian@whistel.com> Bruce Evans <bde@zeta.org.au> David Greenman <dg@root.com>
25 lines
662 B
ArmAsm
25 lines
662 B
ArmAsm
#include "linux_assym.h" /* system definitions */
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#include <machine/asmacros.h> /* miscellaneous asm macros */
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#include <i386/linux/linux_syscall.h> /* system call numbers */
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NON_GPROF_ENTRY(linux_sigcode)
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call LINUX_SIGF_HANDLER(%esp)
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leal LINUX_SIGF_SC(%esp),%ebx /* linux scp */
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movl LINUX_SC_GS(%ebx),%edx
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movl %dx,%gs
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push %eax /* fake ret addr */
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movl $LINUX_SYS_linux_sigreturn,%eax /* linux_sigreturn() */
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int $0x80 /* enter kernel with args on stack */
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hlt /* never gets here */
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.align 2 /* long word align */
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_linux_esigcode:
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.data
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.globl _linux_szsigcode
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_linux_szsigcode:
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.long _linux_esigcode-_linux_sigcode
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.text
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