| /* Copyright (c) 2002, Marek Michalkiewicz <marekm@amelek.gda.pl> |
| Copyright (c) 2007, 2008 Eric B. Weddington |
| All rights reserved. |
| |
| Redistribution and use in source and binary forms, with or without |
| modification, are permitted provided that the following conditions are met: |
| |
| * Redistributions of source code must retain the above copyright |
| notice, this list of conditions and the following disclaimer. |
| |
| * Redistributions in binary form must reproduce the above copyright |
| notice, this list of conditions and the following disclaimer in |
| the documentation and/or other materials provided with the |
| distribution. |
| |
| * Neither the name of the copyright holders nor the names of |
| contributors may be used to endorse or promote products derived |
| from this software without specific prior written permission. |
| |
| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| POSSIBILITY OF SUCH DAMAGE. */ |
| |
| /* $Id: gcrt1.S 2114 2010-03-31 05:12:22Z arcanum $ */ |
| |
| #if (__GNUC__ < 3) || (__GNUC__ == 3 && __GNUC_MINOR__ < 3) |
| #error "GCC version >= 3.3 required" |
| #endif |
| |
| #include "macros.inc" |
| |
| .macro vector name |
| .if (. - __vectors < _VECTORS_SIZE) |
| .weak \name |
| .set \name, __bad_interrupt |
| XJMP \name |
| .endif |
| .endm |
| |
| .section .vectors,"ax",@progbits |
| .global __vectors |
| .func __vectors |
| __vectors: |
| XJMP __init |
| vector __vector_1 |
| vector __vector_2 |
| vector __vector_3 |
| vector __vector_4 |
| vector __vector_5 |
| vector __vector_6 |
| vector __vector_7 |
| vector __vector_8 |
| vector __vector_9 |
| vector __vector_10 |
| vector __vector_11 |
| vector __vector_12 |
| vector __vector_13 |
| vector __vector_14 |
| vector __vector_15 |
| vector __vector_16 |
| vector __vector_17 |
| vector __vector_18 |
| vector __vector_19 |
| vector __vector_20 |
| vector __vector_21 |
| vector __vector_22 |
| vector __vector_23 |
| vector __vector_24 |
| vector __vector_25 |
| vector __vector_26 |
| vector __vector_27 |
| vector __vector_28 |
| vector __vector_29 |
| vector __vector_30 |
| vector __vector_31 |
| vector __vector_32 |
| vector __vector_33 |
| vector __vector_34 |
| vector __vector_35 |
| vector __vector_36 |
| vector __vector_37 |
| vector __vector_38 |
| vector __vector_39 |
| vector __vector_40 |
| vector __vector_41 |
| vector __vector_42 |
| vector __vector_43 |
| vector __vector_44 |
| vector __vector_45 |
| vector __vector_46 |
| vector __vector_47 |
| vector __vector_48 |
| vector __vector_49 |
| vector __vector_50 |
| vector __vector_51 |
| vector __vector_52 |
| vector __vector_53 |
| vector __vector_54 |
| vector __vector_55 |
| vector __vector_56 |
| vector __vector_57 |
| vector __vector_58 |
| vector __vector_59 |
| vector __vector_60 |
| vector __vector_61 |
| vector __vector_62 |
| vector __vector_63 |
| vector __vector_64 |
| vector __vector_65 |
| vector __vector_66 |
| vector __vector_67 |
| vector __vector_68 |
| vector __vector_69 |
| vector __vector_70 |
| vector __vector_71 |
| vector __vector_72 |
| vector __vector_73 |
| vector __vector_74 |
| vector __vector_75 |
| vector __vector_76 |
| vector __vector_77 |
| vector __vector_78 |
| vector __vector_79 |
| vector __vector_80 |
| vector __vector_81 |
| vector __vector_82 |
| vector __vector_83 |
| vector __vector_84 |
| vector __vector_85 |
| vector __vector_86 |
| vector __vector_87 |
| vector __vector_88 |
| vector __vector_89 |
| vector __vector_90 |
| vector __vector_91 |
| vector __vector_92 |
| vector __vector_93 |
| vector __vector_94 |
| vector __vector_95 |
| vector __vector_96 |
| vector __vector_97 |
| vector __vector_98 |
| vector __vector_99 |
| vector __vector_100 |
| vector __vector_101 |
| vector __vector_102 |
| vector __vector_103 |
| vector __vector_104 |
| vector __vector_105 |
| vector __vector_106 |
| vector __vector_107 |
| vector __vector_108 |
| vector __vector_109 |
| vector __vector_110 |
| vector __vector_111 |
| vector __vector_112 |
| vector __vector_113 |
| vector __vector_114 |
| vector __vector_115 |
| vector __vector_116 |
| vector __vector_117 |
| vector __vector_118 |
| vector __vector_119 |
| vector __vector_120 |
| vector __vector_121 |
| vector __vector_122 |
| vector __vector_123 |
| vector __vector_124 |
| vector __vector_125 |
| vector __vector_126 |
| vector __vector_127 |
| .endfunc |
| |
| /* Handle unexpected interrupts (enabled and no handler), which |
| usually indicate a bug. Jump to the __vector_default function |
| if defined by the user, otherwise jump to the reset address. |
| |
| This must be in a different section, otherwise the assembler |
| will resolve "rjmp" offsets and there will be no relocs. */ |
| |
| .text |
| .global __bad_interrupt |
| .func __bad_interrupt |
| __bad_interrupt: |
| .weak __vector_default |
| .set __vector_default, __vectors |
| XJMP __vector_default |
| .endfunc |
| |
| .section .init0,"ax",@progbits |
| .weak __init |
| ; .func __init |
| __init: |
| |
| #ifndef __AVR_ASM_ONLY__ |
| .weak __stack |
| |
| /* By default, malloc() uses the current value of the stack pointer |
| minus __malloc_margin as the highest available address. |
| |
| In some applications with external SRAM, the stack can be below |
| the data section (in the internal SRAM - faster), and __heap_end |
| should be set to the highest address available for malloc(). */ |
| .weak __heap_end |
| .set __heap_end, 0 |
| |
| .section .init2,"ax",@progbits |
| clr __zero_reg__ |
| out AVR_STATUS_ADDR, __zero_reg__ |
| ldi r28,lo8(__stack) |
| #ifdef _HAVE_AVR_STACK_POINTER_HI |
| ldi r29,hi8(__stack) |
| out AVR_STACK_POINTER_HI_ADDR, r29 |
| #endif /* _HAVE_AVR_STACK_POINTER_HI */ |
| out AVR_STACK_POINTER_LO_ADDR, r28 |
| |
| #ifdef __AVR_3_BYTE_PC__ |
| ldi r16, hh8(pm(__vectors)) |
| out _SFR_IO_ADDR(EIND), r16 |
| #endif /* __AVR_3_BYTE_PC__ */ |
| |
| #ifdef __AVR_HAVE_RAMPD__ |
| out AVR_RAMPD_ADDR, __zero_reg__ |
| out AVR_RAMPX_ADDR, __zero_reg__ |
| out AVR_RAMPY_ADDR, __zero_reg__ |
| out AVR_RAMPZ_ADDR, __zero_reg__ |
| #endif |
| |
| #if defined(__GNUC__) && ((__GNUC__ <= 3) || (__GNUC__ == 4 && __GNUC_MINOR__ <= 3)) |
| #if BIG_CODE |
| /* Only for >64K devices with RAMPZ, replaces the default code |
| provided by libgcc.S which is only linked in if necessary. */ |
| |
| .section .init4,"ax",@progbits |
| .global __do_copy_data |
| __do_copy_data: |
| ldi r17, hi8(__data_end) |
| ldi r26, lo8(__data_start) |
| ldi r27, hi8(__data_start) |
| ldi r30, lo8(__data_load_start) |
| ldi r31, hi8(__data_load_start) |
| |
| /* On the enhanced core, "elpm" with post-increment updates RAMPZ |
| automatically. Otherwise we have to handle it ourselves. */ |
| |
| #ifdef __AVR_ENHANCED__ |
| ldi r16, hh8(__data_load_start) |
| #else |
| ldi r16, hh8(__data_load_start - 0x10000) |
| .L__do_copy_data_carry: |
| inc r16 |
| #endif |
| out AVR_RAMPZ_ADDR, r16 |
| rjmp .L__do_copy_data_start |
| .L__do_copy_data_loop: |
| #ifdef __AVR_ENHANCED__ |
| elpm r0, Z+ |
| #else |
| elpm |
| #endif |
| st X+, r0 |
| #ifndef __AVR_ENHANCED__ |
| adiw r30, 1 |
| brcs .L__do_copy_data_carry |
| #endif |
| .L__do_copy_data_start: |
| cpi r26, lo8(__data_end) |
| cpc r27, r17 |
| brne .L__do_copy_data_loop |
| #ifdef __AVR_HAVE_RAMPD__ |
| out AVR_RAMPZ_ADDR, __zero_reg__ |
| #endif /* __AVR_HAVE_RAMPD__*/ |
| |
| #endif /* BIG_CODE */ |
| #endif /* defined(__GNUC__) && ((__GNUC__ <= 3) || (__GNUC__ == 4 && __GNUC_MINOR__ <= 3)) */ |
| |
| .set __stack, RAMEND |
| #endif /* !__AVR_ASM_ONLY__ */ |
| |
| .section .init9,"ax",@progbits |
| #ifdef __AVR_ASM_ONLY__ |
| XJMP main |
| #else /* !__AVR_ASM_ONLY__ */ |
| XCALL main |
| XJMP exit |
| #endif /* __AVR_ASM_ONLY__ */ |
| ; .endfunc |
| |
