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syscall.S

syscall.S 1.5 KB
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  1. /* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
    2. 

  2.    This file is part of the GNU C Library.
    3. 

  3. 

  4.    The GNU C Library is free software; you can redistribute it and/or
    5. 

  5.    modify it under the terms of the GNU Lesser General Public
    6. 

  6.    License as published by the Free Software Foundation; either
    7. 

  7.    version 2.1 of the License, or (at your option) any later version.
    8. 

  8. 

  9.    The GNU C Library is distributed in the hope that it will be useful,
    10. 

  10.    but WITHOUT ANY WARRANTY; without even the implied warranty of
    11. 

  11.    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    12. 

  12.    Lesser General Public License for more details.
    13. 

  13. 

  14.    You should have received a copy of the GNU Lesser General Public
    15. 

  15.    License along with the GNU C Library; if not, write to the Free
    16. 

  16.    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    17. 

  17.    02111-1307 USA.  */
    18. 

  18. 

  19. #include <features.h>
    20. 

  20. #include <asm/asm.h>
    21. 

  21. #include <asm/regdef.h>
    22. 

  22. 

  23. #ifdef PIC
    24. 

  24. 	.option pic2
    25. 

  25. #endif
    26. 

  26. .text
    27. 

  27. .align  2
    28. 

  28. .globl  syscall
    29. 

  29. .type   syscall,@function
    30. 

  30. .ent    syscall
    31. 

  31. syscall:
    32. 

  32. 	move	v0, a0		/* Load system call number from first arg.  */
    33. 

  33. 	move	a0, a1		/* Move the next three args up a register.  */
    34. 

  34. 	move	a1, a2
    35. 

  35. 	move	a2, a3
    36. 

  36.      	/* Load the remaining possible args (up to 11) from the stack.  */
    37. 

  37. #ifdef __mips64
    38. 

  38. 	ld	t0,4*8(sp)
    39. 

  39. 	ld	t1,5*8(sp)
    40. 

  40. 	ld	t2,6*8(sp)
    41. 

  41. 	ld	t3,7*8(sp)
    42. 

  42. 	ld	t4,8*8(sp)
    43. 

  43. 	ld	t5,9*8(sp)
    44. 

  44. 	ld	t6,10*8(sp)
    45. 

  45. #else
    46. 

  46. 	lw	t0,4*4(sp)
    47. 

  47. 	lw	t1,5*4(sp)
    48. 

  48. 	lw	t2,6*4(sp)
    49. 

  49. 	lw	t3,7*4(sp)
    50. 

  50. 	lw	t4,8*4(sp)
    51. 

  51. 	lw	t5,9*4(sp)
    52. 

  52. 	lw	t6,10*4(sp)
    53. 

  53. #endif
    54. 

  54. 	syscall			/* Do the system call.  */
    55. 

  55.      	j ra			/* Return to caller.  */
    56.