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Changeset 8e000b8d in mainline


Ignore:
Timestamp:
2009-10-22T16:22:53Z (11 years ago)
Author:
Jakub Jermar <jakub@…>
Branches:
master
Children:
3cc110f
Parents:
4a537dd
Message:

Rename syscall_{int,sysenter} to syscall_{slow,fast}. Syscalls that could be
potentially handled by the fast version make an indirect call using
syscall_fast_func function pointer so that libc has a chance to switch the
implementation. The default implementation is
syscall_slow.

Location:
uspace/lib/libc/arch/ia32
Files:
2 edited

Legend:

Unmodified
Added
Removed
  • uspace/lib/libc/arch/ia32/include/syscall.h

    r4a537dd r8e000b8d  
    4040#include <kernel/syscall/syscall.h>
    4141
    42 #define __syscall0      __syscall_sysenter
    43 #define __syscall1      __syscall_sysenter
    44 #define __syscall2      __syscall_sysenter
    45 #define __syscall3      __syscall_sysenter
    46 #define __syscall4      __syscall_sysenter
    47 #define __syscall5      __syscall_int
    48 #define __syscall6      __syscall_int
     42#define __syscall0      __syscall_fast_func
     43#define __syscall1      __syscall_fast_func
     44#define __syscall2      __syscall_fast_func
     45#define __syscall3      __syscall_fast_func
     46#define __syscall4      __syscall_fast_func
     47#define __syscall5      __syscall_slow
     48#define __syscall6      __syscall_slow
    4949
    5050extern sysarg_t
    51 __syscall_sysenter(const sysarg_t, const sysarg_t, const sysarg_t, const sysarg_t,
    52     const sysarg_t, const sysarg_t, const syscall_t);
     51(* __syscall_fast_func)(const sysarg_t, const sysarg_t, const sysarg_t,
     52    const sysarg_t, const sysarg_t, const sysarg_t, const syscall_t);
    5353
    5454extern sysarg_t
    55 __syscall_int(const sysarg_t, const sysarg_t, const sysarg_t, const sysarg_t,
    56      const sysarg_t, const sysarg_t, const syscall_t);
     55__syscall_slow(const sysarg_t, const sysarg_t, const sysarg_t, const sysarg_t,
     56    const sysarg_t, const sysarg_t, const syscall_t);
    5757
    5858#endif
  • uspace/lib/libc/arch/ia32/src/syscall.S

    r4a537dd r8e000b8d  
    2727#
    2828
     29.data
     30
     31.global __syscall_fast_func
     32__syscall_fast_func:
     33        .long __syscall_slow
     34
    2935.text
    3036
     
    3541 * could benefit from this and not save unused registers on the stack.
    3642 */
    37 .global __syscall_int
    38 __syscall_int:
     43.global __syscall_slow
     44__syscall_slow:
    3945        pushl %ebx
    4046        pushl %esi
     
    6470 * segment, otherwise the SYSENTER wouldn't work in the first place).
    6571 */
    66 .global __syscall_sysenter
    67 __syscall_sysenter:
     72.global __syscall_fast
     73__syscall_fast:
    6874        pushl %ebx
    6975        pushl %esi
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