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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [lwIP_MCF5235_GCC/] [system/] [mcf5xxx.S] - Blame information for rev 773

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Line No. Rev Author Line
1 583 jeremybenn 
/*
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 * Lowest level routines for all ColdFire processors. Based on the
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 * MCF523x examples from Freescale.
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 *
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 * Freescale explicitly grants the redistribution and modification
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 * of these source files. The complete licensing information is
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 * available in the file LICENSE_FREESCALE.TXT.
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 *
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 * Modifications Copyright (c) 2006 Christian Walter
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 *
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 * File: $Id: mcf5xxx.S 2 2011-07-17 20:13:17Z filepang@gmail.com $
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 */
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  .global asm_set_ipl
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  .global _asm_set_ipl
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  .global mcf5xxx_wr_cacr
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  .global _mcf5xxx_wr_cacr
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  .global mcf5xxx_wr_acr0
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  .global _mcf5xxx_wr_acr0
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  .global mcf5xxx_wr_acr1
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  .global _mcf5xxx_wr_acr1
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  .global mcf5xxx_wr_acr2
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  .global _mcf5xxx_wr_acr2
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  .global mcf5xxx_wr_acr3
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  .global _mcf5xxx_wr_acr3
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  .global mcf5xxx_wr_other_sp
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  .global _mcf5xxx_wr_other_sp
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  .global mcf5xxx_wr_other_a7
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  .global _mcf5xxx_wr_other_a7
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  .global mcf5xxx_wr_vbr
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  .global _mcf5xxx_wr_vbr
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  .global mcf5xxx_wr_macsr
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  .global _mcf5xxx_wr_macsr
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  .global mcf5xxx_wr_mask
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  .global _mcf5xxx_wr_mask
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  .global mcf5xxx_wr_acc0
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  .global _mcf5xxx_wr_acc0
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  .global mcf5xxx_wr_accext01
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  .global _mcf5xxx_wr_accext01
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  .global mcf5xxx_wr_accext23
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  .global _mcf5xxx_wr_accext23
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  .global mcf5xxx_wr_acc1
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  .global _mcf5xxx_wr_acc1
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  .global mcf5xxx_wr_acc2
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  .global _mcf5xxx_wr_acc2
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  .global mcf5xxx_wr_acc3
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  .global _mcf5xxx_wr_acc3
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  .global mcf5xxx_wr_sr
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  .global _mcf5xxx_wr_sr
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  .global mcf5xxx_wr_rambar0
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  .global _mcf5xxx_wr_rambar0
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  .global mcf5xxx_wr_rambar1
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  .global _mcf5xxx_wr_rambar1
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  .global mcf5xxx_wr_mbar
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  .global _mcf5xxx_wr_mbar
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  .global mcf5xxx_wr_mbar0
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  .global _mcf5xxx_wr_mbar0
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  .global mcf5xxx_wr_mbar1
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  .global _mcf5xxx_wr_mbar1
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  .text
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/********************************************************************/
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/*
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 * This routines changes the IPL to the value passed into the routine.
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 * It also returns the old IPL value back.
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 * Calling convention from C:
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 *   old_ipl = asm_set_ipl(new_ipl);
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 * For the Diab Data C compiler, it passes return value thru D0.
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 * Note that only the least significant three bits of the passed
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 * value are used.
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 */
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asm_set_ipl:
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_asm_set_ipl:
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  link  a6,#-8
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  movem.l d6-d7,(sp)
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  move.w  sr,d7   /* current sr  */
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  move.l  d7,d0   /* prepare return value  */
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  andi.l  #0x0700,d0  /* mask out IPL  */
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  lsr.l #8,d0   /* IPL   */
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  move.l  8(a6),d6  /* get argument  */
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  andi.l  #0x07,d6    /* least significant three bits  */
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  lsl.l #8,d6   /* move over to make mask  */
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  andi.l  #0x0000F8FF,d7  /* zero out current IPL  */
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  or.l  d6,d7     /* place new IPL in sr   */
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  move.w  d7,sr
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  movem.l (sp),d6-d7
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  lea   8(sp),sp
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  unlk  a6
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  rts
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/********************************************************************/
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/*
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 * These routines write to the special purpose registers in the ColdFire
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 * core.  Since these registers are write-only in the supervisor model,
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 * no corresponding read routines exist.
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 */
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mcf5xxx_wr_cacr:
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_mcf5xxx_wr_cacr:
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    move.l  4(sp),d0
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    .long   0x4e7b0002      /* movec d0,cacr   */
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    nop
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    rts
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mcf5xxx_wr_acr0:
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_mcf5xxx_wr_acr0:
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    move.l  4(sp),d0
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    .long   0x4e7b0004      /* movec d0,ACR0  */
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    nop
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    rts
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mcf5xxx_wr_acr1:
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_mcf5xxx_wr_acr1:
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    move.l  4(sp),d0
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    .long   0x4e7b0005      /* movec d0,ACR1  */
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    nop
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    rts
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mcf5xxx_wr_acr2:
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_mcf5xxx_wr_acr2:
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    move.l  4(sp),d0
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    .long   0x4e7b0006      /* movec d0,ACR2  */
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    nop
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    rts
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mcf5xxx_wr_acr3:
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_mcf5xxx_wr_acr3:
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    move.l  4(sp),d0
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    .long   0x4e7b0007      /* movec d0,ACR3  */
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    nop
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    rts
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mcf5xxx_wr_other_sp:
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_mcf5xxx_wr_other_sp:
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mcf5xxx_wr_other_a7:
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_mcf5xxx_wr_other_a7:
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  move.l  4(sp),d0
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  .long 0x4e7b0800    /* movec d0,OTHER_A7 */
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  nop
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  rts
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mcf5xxx_wr_vbr:
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_mcf5xxx_wr_vbr:
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  move.l  4(sp),d0
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  .long 0x4e7b0801    /* movec d0,VBR */
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  nop
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  rts
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mcf5xxx_wr_macsr:
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_mcf5xxx_wr_macsr:
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    move.l  4(sp),d0
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    .long   0x4e7b0804      /* movec d0,MACSR */
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    nop
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    rts
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mcf5xxx_wr_mask:
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_mcf5xxx_wr_mask:
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    move.l  4(sp),d0
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    .long   0x4e7b0805      /* movec d0,MASK  */
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    nop
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    rts
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mcf5xxx_wr_acc0:
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_mcf5xxx_wr_acc0:
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    move.l  4(sp),d0
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    .long   0x4e7b0806      /* movec d0,ACC0  */
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    nop
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    rts
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mcf5xxx_wr_accext01:
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_mcf5xxx_wr_accext01:
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    move.l  4(sp),d0
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    .long   0x4e7b0807      /* movec d0,ACCEXT01  */
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    nop
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    rts
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mcf5xxx_wr_accext23:
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_mcf5xxx_wr_accext23:
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    move.l  4(sp),d0
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    .long   0x4e7b0808      /* movec d0,ACCEXT23  */
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    nop
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    rts
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mcf5xxx_wr_acc1:
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_mcf5xxx_wr_acc1:
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    move.l  4(sp),d0
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    .long   0x4e7b0809      /* movec d0,ACC1  */
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    nop
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    rts
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mcf5xxx_wr_acc2:
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_mcf5xxx_wr_acc2:
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    move.l  4(sp),d0
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    .long   0x4e7b080A      /* movec d0,ACC2  */
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    nop
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    rts
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mcf5xxx_wr_acc3:
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_mcf5xxx_wr_acc3:
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    move.l  4(sp),d0
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    .long   0x4e7b080B      /* movec d0,ACC3  */
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    nop
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    rts
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mcf5xxx_wr_sr:
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_mcf5xxx_wr_sr:
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  move.l  4(sp),d0
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  move.w  d0,SR
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  rts
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mcf5xxx_wr_rambar0:
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_mcf5xxx_wr_rambar0:
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    move.l  4(sp),d0
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    .long   0x4e7b0C04      /* movec d0,RAMBAR0 */
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    nop
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    rts
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mcf5xxx_wr_rambar1:
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_mcf5xxx_wr_rambar1:
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    move.l  4(sp),d0
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    .long   0x4e7b0C05      /* movec d0,RAMBAR1 */
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    nop
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    rts
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mcf5xxx_wr_mbar:
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_mcf5xxx_wr_mbar:
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mcf5xxx_wr_mbar0:
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_mcf5xxx_wr_mbar0:
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    move.l  4(sp),d0
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    .long   0x4e7b0C0F      /* movec d0,MBAR0 */
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    nop
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    rts
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mcf5xxx_wr_mbar1:
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_mcf5xxx_wr_mbar1:
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    move.l  4(sp),d0
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    .long   0x4e7b0C0E      /* movec d0,MBAR1 */
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    nop
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    rts
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  .end
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/********************************************************************/

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