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devs/nand/micron_mt29: Remove defunct references (in comments) to mt29f2g08_oob_ecc.
author Ross Younger <wry@ecoscentric.com>
date Sun, 18 Jan 2015 17:59:01 +1300
parents 42c5ca5ac4e2
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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1 /*==========================================================================
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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2 //
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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3 // mcount.S
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4 //
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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5 // PowerPC mcount implementation
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6 //
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7 //==========================================================================
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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8 // ####ECOSGPLCOPYRIGHTBEGIN####
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9 // -------------------------------------------
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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10 // This file is part of eCos, the Embedded Configurable Operating System.
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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11 // Copyright (C) 2014 Free Software Foundation, Inc.
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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12 //
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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13 // eCos is free software; you can redistribute it and/or modify it under
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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14 // the terms of the GNU General Public License as published by the Free
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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15 // Software Foundation; either version 2 or (at your option) any later
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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16 // version.
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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17 //
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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18 // eCos is distributed in the hope that it will be useful, but WITHOUT
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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19 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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21 // for more details.
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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22 //
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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23 // You should have received a copy of the GNU General Public License
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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24 // along with eCos; if not, write to the Free Software Foundation, Inc.,
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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25 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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26 //
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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27 // As a special exception, if other files instantiate templates or use
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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28 // macros or inline functions from this file, or you compile this file
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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29 // and link it with other works to produce a work based on this file,
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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30 // this file does not by itself cause the resulting work to be covered by
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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31 // the GNU General Public License. However the source code for this file
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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32 // must still be made available in accordance with section (3) of the GNU
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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33 // General Public License v2.
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34 //
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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35 // This exception does not invalidate any other reasons why a work based
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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36 // on this file might be covered by the GNU General Public License.
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37 // -------------------------------------------
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38 // ####ECOSGPLCOPYRIGHTEND####
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39 //==========================================================================
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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40 //#####DESCRIPTIONBEGIN####
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41 //
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42 // Author(s): jld
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43 // Contributor(s):
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44 // Date: 2014-03-20
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45 // Description: This file provides mcount functions used for
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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46 // call-graph profiling.
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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47 //
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48 //####DESCRIPTIONEND####
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49 //
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50 //========================================================================
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51 */
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52
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53 #include <cyg/hal/arch.inc>
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54
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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55 /*
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56 // GCC inserts mcount code at the start of every function when compiling
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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57 // with "-pg". For GCC targeting PowerPC, the following code is inserted:
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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58 //
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59 // mflr r0
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60 // stw r0, 4(r1)
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61 // bl _mcount
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62 //
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63 // We provide an implementation of _mcount() to call the eCos
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64 // __profile_mcount() function.
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65 */
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66
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67 .section ".text.mcount"
42c5ca5ac4e2 * src/mcount.S: Add mcount functions for call-graph profiling.
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68 .globl _mcount
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69 _mcount:
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70 // create stack frame
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71 stwu r1, -48(r1)
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72
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73 // caller assumes r3-r10 will be preserved and we use r14
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74 stw r3, 8(r1)
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75 stw r4, 12(r1)
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76 stw r5, 16(r1)
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77 stw r6, 20(r1)
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78 stw r7, 24(r1)
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79 stw r8, 28(r1)
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80 stw r9, 32(r1)
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81 stw r10, 36(r1)
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82 stw r14, 40(r1)
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83
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84 // set up parameters for __profile_mcount() and preserve
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85 // lr across our __profile_mcount() call
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86 lwz r3, 52(r1)
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87 subi r3, r3, 2
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88 mflr r4
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89 stw r4, 44(r1)
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90
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91 // disable interrupts
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92 lwi r0, ~CYGARC_REG_MSR_INTBITS
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93 mfmsr r14
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94 and r0, r0, r14
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95 mtmsr r0
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96
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97 // call eCos __profile_mcount()
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98 // r14 is preserved across the call per EABI standard
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99 bl __profile_mcount
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100
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101 // restore interrupts
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102 mtmsr r14
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103
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104 // restore registers
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105 lwz r3, 8(r1)
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106 lwz r4, 12(r1)
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107 lwz r5, 16(r1)
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108 lwz r6, 20(r1)
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109 lwz r7, 24(r1)
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110 lwz r8, 28(r1)
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111 lwz r9, 32(r1)
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112 lwz r10, 36(r1)
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113 lwz r14, 40(r1)
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114
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115 // unwind stack frame and return
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116 lwz r0, 44(r1)
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117 mtctr r0
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118 lwz r0, 52(r1)
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119 mtlr r0
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120 addi r1, r1, 48
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121 bctr
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122
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123 //==========================================================================
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124 // end of mcount.S