[e21c287c] | 1 | /* |
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[5d0fa047] | 2 | * Copyright (c) 2012, 2017 embedded brains GmbH. All rights reserved. |
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[e21c287c] | 3 | * |
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| 4 | * embedded brains GmbH |
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[8d6ceb1] | 5 | * Dornierstr. 4 |
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[e21c287c] | 6 | * 82178 Puchheim |
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| 7 | * Germany |
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| 8 | * <rtems@embedded-brains.de> |
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| 9 | * |
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| 10 | * The license and distribution terms for this file may be |
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| 11 | * found in the file LICENSE in this distribution or at |
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[c499856] | 12 | * http://www.rtems.org/license/LICENSE. |
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[e21c287c] | 13 | */ |
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| 14 | |
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| 15 | #include <bspopts.h> |
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| 16 | |
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[5d0fa047] | 17 | #include <rtems/score/percpu.h> |
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[e21c287c] | 18 | #include <libcpu/powerpc-utility.h> |
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| 19 | #include <bsp/vectors.h> |
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| 20 | |
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| 21 | .globl _start |
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| 22 | .globl bsp_exc_vector_base |
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| 23 | |
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| 24 | .section ".bsp_start_text", "ax" |
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| 25 | |
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[8d6ceb1] | 26 | /* Primitive NULL pointer protection */ |
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| 27 | .rept 1024 |
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| 28 | sc |
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| 29 | .endr |
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| 30 | |
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[e21c287c] | 31 | _start: |
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| 32 | /* Enable time base */ |
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| 33 | li r0, 0x4000 |
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| 34 | mtspr HID0, r0 |
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| 35 | |
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| 36 | /* Initialize start stack */ |
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| 37 | LWI r1, start_stack_end |
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| 38 | subi r1, r1, 16 |
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| 39 | li r0, 0 |
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| 40 | stw r0, 0(r1) |
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| 41 | |
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[5d0fa047] | 42 | #ifdef RTEMS_SMP |
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| 43 | SET_SELF_CPU_CONTROL r3 |
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| 44 | #endif |
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| 45 | |
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[e21c287c] | 46 | /* Copy fast text */ |
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| 47 | LWI r3, bsp_section_fast_text_begin |
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| 48 | LWI r4, bsp_section_fast_text_load_begin |
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| 49 | LWI r5, bsp_section_fast_text_size |
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| 50 | bl copy |
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| 51 | |
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| 52 | /* Copy read-only data */ |
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| 53 | LWI r3, bsp_section_rodata_begin |
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| 54 | LWI r4, bsp_section_rodata_load_begin |
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| 55 | LWI r5, bsp_section_rodata_size |
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| 56 | bl copy |
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| 57 | |
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| 58 | /* Copy fast data */ |
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| 59 | LWI r3, bsp_section_fast_data_begin |
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| 60 | LWI r4, bsp_section_fast_data_load_begin |
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| 61 | LWI r5, bsp_section_fast_data_size |
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| 62 | bl copy |
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| 63 | |
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| 64 | /* Copy data */ |
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| 65 | LWI r3, bsp_section_data_begin |
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| 66 | LWI r4, bsp_section_data_load_begin |
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| 67 | LWI r5, bsp_section_data_size |
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| 68 | bl copy |
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| 69 | |
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| 70 | /* Clear SBSS */ |
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| 71 | LWI r3, bsp_section_sbss_begin |
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| 72 | LWI r4, bsp_section_sbss_size |
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| 73 | bl bsp_start_zero |
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| 74 | |
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| 75 | /* Clear BSS */ |
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| 76 | LWI r3, bsp_section_bss_begin |
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| 77 | LWI r4, bsp_section_bss_size |
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| 78 | bl bsp_start_zero |
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| 79 | |
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| 80 | /* Set up EABI and SYSV environment */ |
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| 81 | bl __eabi |
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| 82 | |
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| 83 | /* Clear command line */ |
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| 84 | li r3, 0 |
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| 85 | |
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| 86 | bl boot_card |
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| 87 | |
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| 88 | twiddle: |
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| 89 | b twiddle |
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| 90 | |
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| 91 | copy: |
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| 92 | cmpw r3, r4 |
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| 93 | beqlr |
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| 94 | b memcpy |
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| 95 | |
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| 96 | /* Exception vector prologues area */ |
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| 97 | .section ".bsp_start_text", "ax" |
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| 98 | .align 4 |
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| 99 | bsp_exc_vector_base: |
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| 100 | stw r1, ppc_exc_lock_crit@sdarel(r13) |
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| 101 | stw r4, ppc_exc_vector_register_crit@sdarel(r13) |
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| 102 | li r4, -32767 |
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| 103 | b ppc_exc_wrap_bookE_crit |
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| 104 | stwu r1, -EXC_GENERIC_SIZE(r1) |
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| 105 | stw r4, GPR4_OFFSET(r1) |
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| 106 | li r4, 2 |
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| 107 | b ppc_exc_wrap_nopush_e500_mchk |
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| 108 | stwu r1, -EXC_GENERIC_SIZE(r1) |
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| 109 | stw r4, GPR4_OFFSET(r1) |
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| 110 | li r4, 3 |
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| 111 | b ppc_exc_wrap_nopush_std |
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| 112 | stwu r1, -EXC_GENERIC_SIZE(r1) |
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| 113 | stw r4, GPR4_OFFSET(r1) |
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| 114 | li r4, 4 |
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| 115 | b ppc_exc_wrap_nopush_std |
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[2599c8e] | 116 | stwu r1, -CPU_INTERRUPT_FRAME_SIZE(r1) |
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[e21c287c] | 117 | stw r4, PPC_EXC_VECTOR_PROLOGUE_OFFSET(r1) |
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| 118 | li r4, -32763 |
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| 119 | b ppc_exc_wrap_async_normal |
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| 120 | stwu r1, -EXC_GENERIC_SIZE(r1) |
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| 121 | stw r4, GPR4_OFFSET(r1) |
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| 122 | li r4, 6 |
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| 123 | b ppc_exc_wrap_nopush_std |
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| 124 | stwu r1, -EXC_GENERIC_SIZE(r1) |
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| 125 | stw r4, GPR4_OFFSET(r1) |
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| 126 | li r4, 7 |
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| 127 | b ppc_exc_wrap_nopush_std |
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| 128 | stwu r1, -EXC_GENERIC_SIZE(r1) |
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| 129 | stw r4, GPR4_OFFSET(r1) |
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| 130 | li r4, 8 |
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| 131 | b ppc_exc_wrap_nopush_std |
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| 132 | stwu r1, -EXC_GENERIC_SIZE(r1) |
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| 133 | stw r4, GPR4_OFFSET(r1) |
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| 134 | li r4, 12 |
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| 135 | b ppc_exc_wrap_nopush_std |
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| 136 | stwu r1, -EXC_GENERIC_SIZE(r1) |
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| 137 | stw r4, GPR4_OFFSET(r1) |
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| 138 | li r4, 24 |
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| 139 | b ppc_exc_wrap_nopush_std |
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[2599c8e] | 140 | stwu r1, -CPU_INTERRUPT_FRAME_SIZE(r1) |
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[e21c287c] | 141 | stw r4, PPC_EXC_VECTOR_PROLOGUE_OFFSET(r1) |
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| 142 | li r4, -32752 |
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| 143 | b ppc_exc_wrap_async_normal |
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[2599c8e] | 144 | stwu r1, -CPU_INTERRUPT_FRAME_SIZE(r1) |
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[e21c287c] | 145 | stw r4, PPC_EXC_VECTOR_PROLOGUE_OFFSET(r1) |
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| 146 | li r4, -32749 |
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| 147 | b ppc_exc_wrap_async_normal |
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| 148 | stw r1, ppc_exc_lock_crit@sdarel(r13) |
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| 149 | stw r4, ppc_exc_vector_register_crit@sdarel(r13) |
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| 150 | li r4, -32748 |
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| 151 | b ppc_exc_wrap_bookE_crit |
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| 152 | stwu r1, -EXC_GENERIC_SIZE(r1) |
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| 153 | stw r4, GPR4_OFFSET(r1) |
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| 154 | li r4, 18 |
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| 155 | b ppc_exc_wrap_nopush_std |
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| 156 | stwu r1, -EXC_GENERIC_SIZE(r1) |
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| 157 | stw r4, GPR4_OFFSET(r1) |
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| 158 | li r4, 17 |
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| 159 | b ppc_exc_wrap_nopush_std |
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| 160 | stwu r1, -EXC_GENERIC_SIZE(r1) |
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| 161 | stw r4, GPR4_OFFSET(r1) |
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| 162 | li r4, 13 |
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| 163 | b ppc_exc_wrap_nopush_bookE_crit |
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| 164 | stwu r1, -EXC_GENERIC_SIZE(r1) |
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| 165 | stw r4, GPR4_OFFSET(r1) |
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| 166 | li r4, 10 |
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| 167 | b ppc_exc_wrap_nopush_std |
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| 168 | stwu r1, -EXC_GENERIC_SIZE(r1) |
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| 169 | stw r4, GPR4_OFFSET(r1) |
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| 170 | li r4, 25 |
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| 171 | b ppc_exc_wrap_nopush_std |
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| 172 | stwu r1, -EXC_GENERIC_SIZE(r1) |
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| 173 | stw r4, GPR4_OFFSET(r1) |
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| 174 | li r4, 26 |
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| 175 | b ppc_exc_wrap_nopush_std |
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| 176 | stwu r1, -EXC_GENERIC_SIZE(r1) |
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| 177 | stw r4, GPR4_OFFSET(r1) |
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| 178 | li r4, 15 |
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| 179 | b ppc_exc_wrap_nopush_std |
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| 180 | |
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| 181 | /* Start stack area */ |
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| 182 | .section ".bsp_rwextra", "aw", @nobits |
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| 183 | .align 4 |
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| 184 | .space 4096 |
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| 185 | start_stack_end: |
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