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Diffstat (limited to 'libgloss/rl78/crt0.S')
| -rw-r--r-- | libgloss/rl78/crt0.S | 331 |
1 files changed, 0 insertions, 331 deletions
diff --git a/libgloss/rl78/crt0.S b/libgloss/rl78/crt0.S deleted file mode 100644 index d5a07df90..000000000 --- a/libgloss/rl78/crt0.S +++ /dev/null @@ -1,331 +0,0 @@ -/* Copyright (c) 2011 Red Hat Incorporated. - 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. - - The name of Red Hat Incorporated may not 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 Red Hat - incorporated 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. */ - -#include "rl78-sys.h" - - .section ".vec","a" - .short _start - - .section ".ivec","a" - .macro _iv x - .weak \x - .short \x - .endm -#define IV(x) _iv _##x##_handler -#define IVx() .short 0 - - /* To use a vector, simply define a global function named foo_handler() - for any IV(foo) listed below (i.e. tm05_handler) */ - - .global _interrupt_vector_table -_interrupt_vector_table: - IV(wdti) - IV(lvi) - IV(p0) - IV(p1) - IV(p2) - IV(p3) - IV(p4) - IV(p5) - - IV(st2) - IV(sr2) - IV(sre2) - IV(dma0) - IV(dma1) - IV(st0) - IV(sr0) - IV(tm01h) - - IV(st1) - IV(sr1) - IV(sre1) - IV(iica0) - IV(tm00) - IV(tm01) - IV(tm02) - IV(tm03) - - IV(ad) - IV(rtc) - IV(it) - IV(kr) - IV(st3) - IV(sr3) - IV(tm13) - IV(tm04) - - IV(tm05) - IV(tm06) - IV(tm07) - IV(p6) - IV(p7) - IV(p8) - IV(p9) - IV(p10) - - IV(p11) - IV(tm10) - IV(tm12) - IV(sre3) - IV(tm13h) - IV(md) - IV(iica1) - IV(fl) - - IV(dma2) - IV(dma3) - IV(tm14) - IV(tm15) - IV(tm16) - IV(tm17) - IVx() - IVx() - - IVx() - IVx() - IVx() - IVx() - IVx() - IV(brk) - /* Note: 126 vectors */ - - .section ".csstart", "ax" - .global __csstart -__csstart: - br !!_start - - .weak __rl78_option_byte_0 - .weak __rl78_option_byte_1 - .weak __rl78_option_byte_2 - .weak __rl78_option_byte_3 -__rl78_option_byte_0 = 0x6e -__rl78_option_byte_1 = 0xff -__rl78_option_byte_2 = 0xe8 -__rl78_option_byte_3 = 0x85 - - .section ".opt", "a" - .byte __rl78_option_byte_0 - .byte __rl78_option_byte_1 - .byte __rl78_option_byte_2 - .byte __rl78_option_byte_3 - - .text - - .global _start - .type _start, @function -_start: - movw sp, #__stack - - -;; block move to initialize .data - - ;; we're copying from 00:[_romdatastart] to 0F:[_datastart] - ;; and our data is not in the mirrored area. - mov es, #0 - - sel rb0 ; bank 0 - movw hl, #__datastart - movw de, #__romdatastart - sel rb1 ; bank 1 - movw ax, #__romdatacopysize - shrw ax,1 -1: - cmpw ax, #0 - bz $1f - decw ax - sel rb0 ; bank 0 - movw ax, es:[de] - movw [hl], ax - incw de - incw de - incw hl - incw hl - sel rb1 - br $1b -1: - sel rb0 ; bank 0 - - -;; block fill to .bss - - sel rb0 ; bank 0 - movw hl, #__bssstart - movw ax, #0 - sel rb1 ; bank 1 - movw ax, #__bsssize - shrw ax,1 -1: - cmpw ax, #0 - bz $1f - decw ax - sel rb0 ; bank 0 - movw [hl], ax - incw hl - incw hl - sel rb1 - br $1b -1: - sel rb0 ; bank 0 - - - - call !!__rl78_init - -#ifdef PROFILE_SUPPORT /* Defined in gcrt0.S. */ - movw ax, # _start - push ax - movw ax, # _etext - push ax - call !!__monstartup -#endif - - movw ax, #0 - push ax /* envp */ - push ax /* argv */ - push ax /* argc */ - call !!_main -.LFE2: - - movw ax, r8 ; Save return code. - push ax - -#ifdef PROFILE_SUPPORT - call !!__mcleanup -#endif - - call !!_exit - - .size _start, . - _start - - .global _rl78_run_preinit_array - .type _rl78_run_preinit_array,@function -_rl78_run_preinit_array: - movw hl, #__preinit_array_start - movw de, #__preinit_array_end - movw bc, #-2 - br $_rl78_run_inilist - - .global _rl78_run_init_array - .type _rl78_run_init_array,@function -_rl78_run_init_array: - movw hl, #__init_array_start - movw de, #__init_array_end - movw bc, #2 - br $_rl78_run_inilist - - .global _rl78_run_fini_array - .type _rl78_run_fini_array,@function -_rl78_run_fini_array: - movw hl, #__fini_array_start - movw de, #__fini_array_end - movw bc, #-2 - /* fall through */ - - ;; HL = start of list - ;; DE = end of list - ;; BC = step direction (+2 or -2) -_rl78_run_inilist: -next_inilist: - movw ax, hl - cmpw ax, de - bz $done_inilist - movw ax, [hl] - cmpw ax, #-1 - bz $skip_inilist - cmpw ax, #0 - bz $skip_inilist - push ax - push bc - push de - push hl - call ax - pop hl - pop de - pop bc - pop ax -skip_inilist: - movw ax, hl - addw ax, bc - movw hl, ax - br $next_inilist -done_inilist: - ret - - .section .init,"ax" - - .global __rl78_init -__rl78_init: - - .section .fini,"ax" - - .global __rl78_fini -__rl78_fini: - call !!_rl78_run_fini_array - - .section .data - .global ___dso_handle - .weak ___dso_handle -___dso_handle: - .long 0 - -;;; Provide Dwarf unwinding information that will help GDB stop -;;; backtraces at the right place. This is stolen from assembly -;;; code generated by GCC with -dA. - .section .debug_frame,"",@progbits -.Lframe0: - .4byte .LECIE0-.LSCIE0 ; Length of Common Information Entry -.LSCIE0: - .4byte 0xffffffff ; CIE Identifier Tag - .byte 0x1 ; CIE Version - .ascii "\0" ; CIE Augmentation - .uleb128 0x1 ; CIE Code Alignment Factor - .sleb128 -1 ; CIE Data Alignment Factor - .byte 0xd ; CIE RA Column - .byte 0xc ; DW_CFA_def_cfa - .uleb128 0xc - .uleb128 0x3 - .byte 0x8d ; DW_CFA_offset, column 0xd - .uleb128 0x3 - .p2align 2 -.LECIE0: -.LSFDE0: - .4byte .LEFDE0-.LASFDE0 ; FDE Length -.LASFDE0: - .4byte .Lframe0 ; FDE CIE offset - .4byte _start ; FDE initial location - .4byte .LFE2 - _start ; FDE address range - .byte 0xf ; DW_CFA_def_cfa_expression - .uleb128 1 ; length of expression - .byte 0x30 ; DW_OP_lit0 - .p2align 2 -.LEFDE0: - - .text |