newlib/libgloss/m68k/cf-crt0.S

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2006-12-11 Kazu Hirata <kazu@codesourcery.com> Merge from newlib-csl-20060320-branch: 2006-12-01 Nathan Sidwell <nathan@codesourcery.com> Kazu Hirata <kazu@codesourcery.com> * m68k/Makefile.in (CF_ISRS): Use addprefix. 2006-11-01 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in (CFLAGS): Do not clear. Add to all compilations. (ARFLAGS): Remove commented out definition. * m68k/configure.in (DO) Set to list of target cpu families. * m68k/configure: Rebuilt. * m68k/Makefile.in (DO): New. (UNHOSTED_BSP, UNHOSTED_OBJS, HOSTED_BSP, HOSTED_OBJS): Move later. (m5208evb, m5213evb, m52235evb, m5235evb, m5273c3, m5275evb, m5282evb, m5329evb, m5485evb): Move earlier. (all): Add all_$DO dependencies. (all_cf, all_m68k): New targets, depend on cf & m68k bsps as appropriate. (m%-ram.ld, m%-rom.ld, m%-ram-hosted.ld, m%-rom-hosted.ld): Add 'm' prefix. (install): Add install_$DO dependencies. (install_cf, install_m68k): New targets. Perform cf and m68k installs as appropriate. (install_io): New, install the io libraries. 2006-10-23 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in (CF_CRT0): Rename to CF_CRT0S, separate hosted & unhosted versions. (CF_OBJS): Add cf-isv.o. (CF_SOURCES): Add cf-isv.S. (cf-hosted-crt0.o, cf-unhosted-crt0.o): New targets. * m68k/cf-isv.S: New, broken out of ... * m68k/cf-crt0.S: ... here. Add HOSTED & UNHOSTED differences. * m68k/cf-crt1.c (__start1): Add heap_limit argument. (__heap_limit): Define. * m68k/cf-sbrk.c (__heap_limit): Declare. (sbrk): Adjust for __heap_limit. * m68k/cf.sc: Use different crt0's for hosted & unhosted. Install a separate isv.o file. * m68k/io.h (HOSTED_PUTCHAR): Replace with ... (HOSTED_INIT_SIM): ... this. 2006-10-20 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in (CF_BOARDS): Add m5275evb. (m5275evb): New board. 2006-10-20 Vladimir Prus <vladimir@codesourcery.com> * m68k/cf.sc: Add linkonce sections and DWARF sections. 2006-10-07 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in: Adjust Coldfire rules. (BDM_CRT0, BDM_BSP, BDM_OBJS, BDM_ISRS): Rename to ... (CF_CRT0, CF_BSP, CF_OBJS, CF_ISRS): ... here. Adjust. (BDM_OTHER_OBJS): Remove. (BDM_SYSOBJS): Rename to ... (UNHOSTED_OBJS): ... here. Adjust. (UNHOSTED_BSP, HOSTED_OBJS, HOSTED_BSP): New. (CF_HOSTED_SCRIPTS): New. (CF_SCRIPTS, CF_SOURCES): Adjust. * m68k/cf.sc: Add IO library variable. * m68k/bdm-crt0.S, m68k/bdm-crt1.c, m68k/bdm-isrs.c, m68k/bdm-sbrk.c, m68k/bdm-semihost.S: Rename to ... * m68k/cf-crt0.S, m68k/cf-crt1.c, m68k/cf-isrs.c, m68k/cf-sbrk.c, m68k/cf-hosted.S: ... here. * m68k/cf-exit.c: New. * m68k/bdm-gdb.h, m68k/bdm-semihost.h: Merge into ... * m68k/io.h: ... here. Add unhosted support. Adjust conversion function names. * m68k/bdm-gdb.c: Rename to ... * m68k/io-gdb.c: ... here. Adjust names of conversion functions. * m68k/bdm-close.c, m68k/bdm-exit.c, m68k/bdm-fstat.c, m68k/bdm-gettimeofday.c, m68k/bdm-isatty.c, m68k/bdm-lseek.c, m68k/bdm-open.c, m68k/bdm-read.c, m68k/bdm-rename.c, m68k/bdm-stat.c, m68k/bdm-system.c, m68k/bdm-time.c, m68k/bdm-unlink.c, m68k/bdm-write.c: Rename to ... * m68k/io-close.c, m68k/io-exit.c, m68k/io-fstat.c, m68k/io-gettimeofday.c, m68k/io-isatty.c, m68k/io-lseek.c, m68k/io-open.c, m68k/io-read.c, m68k/io-rename.c, m68k/io-stat.c, m68k/io-system.c, m68k/io-time.c, m68k/io-unlink.c, m68k/io-write.c: ... here. Include io.h. Adjust for hosted & unhosted libraries. Adjust names of gdb conversion functions. 2006-09-29 Nathan Sidwell <nathan@codesourcery.com> * m68k/bdm-semihost.S: Add more comments. Make instruction weirder. 2006-09-22 Nathan Sidwell <nathan@codesourcery.com> * m68k/bdm-crt1.c (hardware_init_hook): Use #defines for CACR bits. 2006-09-18 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in: Don't force a frame pointer on the ISRs. * m68k/bdm-crt1.c (__start1): Don't set the VBR here. (hardeare_init_hook): Define weakly. Set VBR here, enable caching if supported. * m68k/Makefile.in (bdm-semihost.o): Build from bdm-semihost.S. * m68k/bdm-semihost.c: Remove. * m68k/bdm-semihost.S: New. * m68k/bdm-crt0.S: Don't install semihosting trap handler. * m68k/bdm-close.c, bdm-exit.c, bdm-fstat.c, bdm-gettimeofday.c, bdm-isatty.c, bdm-lseek.c, bdm-open.c, bdm-read.c, bdm-rename.c, bdm-stat.c, bdm-system.c, bdm-unlink.c, bdm-write.c): Update. * m68k/bdm-isrs.c: Update comment. * m68k/bdm-semihost.h (BDM_TRAPNUM, BDM_FUNC_REG, BDM_ARG_REG, BDM_TRAP): Remove. (__bdm_semihost): Declare. 2006-09-15 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in (BDM_OTHER_OBJS): Remove sbrk.o. (BDM_SYSOBJS): Add bdm-sbrk.o. * m68k/bdm-sbrk.c: New. 2006-09-06 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in (CF_SOURCES): New. (install): Install them. 2006-09-01 Nathan Sidwell <nathan@codesourcery.com> * m68k/cf.sc: Add .jcr section to .text.
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/* Initial boot
*
* Copyright (c) 2006 CodeSourcery Inc
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
#include "asm.h"
.text
.extern __stack
.extern __heap_end
.weak __heap_end
.extern __start1
/* __reset should cause a HALT in a hosted executable and
fall into __start for an unhosted executable. The user is
free to override this with their own declaration. */
.globl __reset
.weak __reset
__reset:
#if HOSTED
HALT
#endif
2006-12-11 Kazu Hirata <kazu@codesourcery.com> Merge from newlib-csl-20060320-branch: 2006-12-01 Nathan Sidwell <nathan@codesourcery.com> Kazu Hirata <kazu@codesourcery.com> * m68k/Makefile.in (CF_ISRS): Use addprefix. 2006-11-01 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in (CFLAGS): Do not clear. Add to all compilations. (ARFLAGS): Remove commented out definition. * m68k/configure.in (DO) Set to list of target cpu families. * m68k/configure: Rebuilt. * m68k/Makefile.in (DO): New. (UNHOSTED_BSP, UNHOSTED_OBJS, HOSTED_BSP, HOSTED_OBJS): Move later. (m5208evb, m5213evb, m52235evb, m5235evb, m5273c3, m5275evb, m5282evb, m5329evb, m5485evb): Move earlier. (all): Add all_$DO dependencies. (all_cf, all_m68k): New targets, depend on cf & m68k bsps as appropriate. (m%-ram.ld, m%-rom.ld, m%-ram-hosted.ld, m%-rom-hosted.ld): Add 'm' prefix. (install): Add install_$DO dependencies. (install_cf, install_m68k): New targets. Perform cf and m68k installs as appropriate. (install_io): New, install the io libraries. 2006-10-23 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in (CF_CRT0): Rename to CF_CRT0S, separate hosted & unhosted versions. (CF_OBJS): Add cf-isv.o. (CF_SOURCES): Add cf-isv.S. (cf-hosted-crt0.o, cf-unhosted-crt0.o): New targets. * m68k/cf-isv.S: New, broken out of ... * m68k/cf-crt0.S: ... here. Add HOSTED & UNHOSTED differences. * m68k/cf-crt1.c (__start1): Add heap_limit argument. (__heap_limit): Define. * m68k/cf-sbrk.c (__heap_limit): Declare. (sbrk): Adjust for __heap_limit. * m68k/cf.sc: Use different crt0's for hosted & unhosted. Install a separate isv.o file. * m68k/io.h (HOSTED_PUTCHAR): Replace with ... (HOSTED_INIT_SIM): ... this. 2006-10-20 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in (CF_BOARDS): Add m5275evb. (m5275evb): New board. 2006-10-20 Vladimir Prus <vladimir@codesourcery.com> * m68k/cf.sc: Add linkonce sections and DWARF sections. 2006-10-07 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in: Adjust Coldfire rules. (BDM_CRT0, BDM_BSP, BDM_OBJS, BDM_ISRS): Rename to ... (CF_CRT0, CF_BSP, CF_OBJS, CF_ISRS): ... here. Adjust. (BDM_OTHER_OBJS): Remove. (BDM_SYSOBJS): Rename to ... (UNHOSTED_OBJS): ... here. Adjust. (UNHOSTED_BSP, HOSTED_OBJS, HOSTED_BSP): New. (CF_HOSTED_SCRIPTS): New. (CF_SCRIPTS, CF_SOURCES): Adjust. * m68k/cf.sc: Add IO library variable. * m68k/bdm-crt0.S, m68k/bdm-crt1.c, m68k/bdm-isrs.c, m68k/bdm-sbrk.c, m68k/bdm-semihost.S: Rename to ... * m68k/cf-crt0.S, m68k/cf-crt1.c, m68k/cf-isrs.c, m68k/cf-sbrk.c, m68k/cf-hosted.S: ... here. * m68k/cf-exit.c: New. * m68k/bdm-gdb.h, m68k/bdm-semihost.h: Merge into ... * m68k/io.h: ... here. Add unhosted support. Adjust conversion function names. * m68k/bdm-gdb.c: Rename to ... * m68k/io-gdb.c: ... here. Adjust names of conversion functions. * m68k/bdm-close.c, m68k/bdm-exit.c, m68k/bdm-fstat.c, m68k/bdm-gettimeofday.c, m68k/bdm-isatty.c, m68k/bdm-lseek.c, m68k/bdm-open.c, m68k/bdm-read.c, m68k/bdm-rename.c, m68k/bdm-stat.c, m68k/bdm-system.c, m68k/bdm-time.c, m68k/bdm-unlink.c, m68k/bdm-write.c: Rename to ... * m68k/io-close.c, m68k/io-exit.c, m68k/io-fstat.c, m68k/io-gettimeofday.c, m68k/io-isatty.c, m68k/io-lseek.c, m68k/io-open.c, m68k/io-read.c, m68k/io-rename.c, m68k/io-stat.c, m68k/io-system.c, m68k/io-time.c, m68k/io-unlink.c, m68k/io-write.c: ... here. Include io.h. Adjust for hosted & unhosted libraries. Adjust names of gdb conversion functions. 2006-09-29 Nathan Sidwell <nathan@codesourcery.com> * m68k/bdm-semihost.S: Add more comments. Make instruction weirder. 2006-09-22 Nathan Sidwell <nathan@codesourcery.com> * m68k/bdm-crt1.c (hardware_init_hook): Use #defines for CACR bits. 2006-09-18 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in: Don't force a frame pointer on the ISRs. * m68k/bdm-crt1.c (__start1): Don't set the VBR here. (hardeare_init_hook): Define weakly. Set VBR here, enable caching if supported. * m68k/Makefile.in (bdm-semihost.o): Build from bdm-semihost.S. * m68k/bdm-semihost.c: Remove. * m68k/bdm-semihost.S: New. * m68k/bdm-crt0.S: Don't install semihosting trap handler. * m68k/bdm-close.c, bdm-exit.c, bdm-fstat.c, bdm-gettimeofday.c, bdm-isatty.c, bdm-lseek.c, bdm-open.c, bdm-read.c, bdm-rename.c, bdm-stat.c, bdm-system.c, bdm-unlink.c, bdm-write.c): Update. * m68k/bdm-isrs.c: Update comment. * m68k/bdm-semihost.h (BDM_TRAPNUM, BDM_FUNC_REG, BDM_ARG_REG, BDM_TRAP): Remove. (__bdm_semihost): Declare. 2006-09-15 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in (BDM_OTHER_OBJS): Remove sbrk.o. (BDM_SYSOBJS): Add bdm-sbrk.o. * m68k/bdm-sbrk.c: New. 2006-09-06 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in (CF_SOURCES): New. (install): Install them. 2006-09-01 Nathan Sidwell <nathan@codesourcery.com> * m68k/cf.sc: Add .jcr section to .text.
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.globl __start
__start:
/* Initialize stack */
move.l IMM(__stack), sp
move.l IMM(0), fp
move.l IMM(__heap_end), d1
#if HOSTED
/* INIT_SIM syscall. Allows changing sp & d1. */
move.l IMM(1),d0
/* The semihosting sequence is 'nop; halt;sentinel' aligned to
a 4 byte boundary. The sentinel is an ill formed instruction
(movec %sp,0). The debugger will adjust the pc, so it is never
executed. */
.balignw 4,0x4e71
2006-12-11 Kazu Hirata <kazu@codesourcery.com> Merge from newlib-csl-20060320-branch: 2006-12-01 Nathan Sidwell <nathan@codesourcery.com> Kazu Hirata <kazu@codesourcery.com> * m68k/Makefile.in (CF_ISRS): Use addprefix. 2006-11-01 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in (CFLAGS): Do not clear. Add to all compilations. (ARFLAGS): Remove commented out definition. * m68k/configure.in (DO) Set to list of target cpu families. * m68k/configure: Rebuilt. * m68k/Makefile.in (DO): New. (UNHOSTED_BSP, UNHOSTED_OBJS, HOSTED_BSP, HOSTED_OBJS): Move later. (m5208evb, m5213evb, m52235evb, m5235evb, m5273c3, m5275evb, m5282evb, m5329evb, m5485evb): Move earlier. (all): Add all_$DO dependencies. (all_cf, all_m68k): New targets, depend on cf & m68k bsps as appropriate. (m%-ram.ld, m%-rom.ld, m%-ram-hosted.ld, m%-rom-hosted.ld): Add 'm' prefix. (install): Add install_$DO dependencies. (install_cf, install_m68k): New targets. Perform cf and m68k installs as appropriate. (install_io): New, install the io libraries. 2006-10-23 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in (CF_CRT0): Rename to CF_CRT0S, separate hosted & unhosted versions. (CF_OBJS): Add cf-isv.o. (CF_SOURCES): Add cf-isv.S. (cf-hosted-crt0.o, cf-unhosted-crt0.o): New targets. * m68k/cf-isv.S: New, broken out of ... * m68k/cf-crt0.S: ... here. Add HOSTED & UNHOSTED differences. * m68k/cf-crt1.c (__start1): Add heap_limit argument. (__heap_limit): Define. * m68k/cf-sbrk.c (__heap_limit): Declare. (sbrk): Adjust for __heap_limit. * m68k/cf.sc: Use different crt0's for hosted & unhosted. Install a separate isv.o file. * m68k/io.h (HOSTED_PUTCHAR): Replace with ... (HOSTED_INIT_SIM): ... this. 2006-10-20 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in (CF_BOARDS): Add m5275evb. (m5275evb): New board. 2006-10-20 Vladimir Prus <vladimir@codesourcery.com> * m68k/cf.sc: Add linkonce sections and DWARF sections. 2006-10-07 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in: Adjust Coldfire rules. (BDM_CRT0, BDM_BSP, BDM_OBJS, BDM_ISRS): Rename to ... (CF_CRT0, CF_BSP, CF_OBJS, CF_ISRS): ... here. Adjust. (BDM_OTHER_OBJS): Remove. (BDM_SYSOBJS): Rename to ... (UNHOSTED_OBJS): ... here. Adjust. (UNHOSTED_BSP, HOSTED_OBJS, HOSTED_BSP): New. (CF_HOSTED_SCRIPTS): New. (CF_SCRIPTS, CF_SOURCES): Adjust. * m68k/cf.sc: Add IO library variable. * m68k/bdm-crt0.S, m68k/bdm-crt1.c, m68k/bdm-isrs.c, m68k/bdm-sbrk.c, m68k/bdm-semihost.S: Rename to ... * m68k/cf-crt0.S, m68k/cf-crt1.c, m68k/cf-isrs.c, m68k/cf-sbrk.c, m68k/cf-hosted.S: ... here. * m68k/cf-exit.c: New. * m68k/bdm-gdb.h, m68k/bdm-semihost.h: Merge into ... * m68k/io.h: ... here. Add unhosted support. Adjust conversion function names. * m68k/bdm-gdb.c: Rename to ... * m68k/io-gdb.c: ... here. Adjust names of conversion functions. * m68k/bdm-close.c, m68k/bdm-exit.c, m68k/bdm-fstat.c, m68k/bdm-gettimeofday.c, m68k/bdm-isatty.c, m68k/bdm-lseek.c, m68k/bdm-open.c, m68k/bdm-read.c, m68k/bdm-rename.c, m68k/bdm-stat.c, m68k/bdm-system.c, m68k/bdm-time.c, m68k/bdm-unlink.c, m68k/bdm-write.c: Rename to ... * m68k/io-close.c, m68k/io-exit.c, m68k/io-fstat.c, m68k/io-gettimeofday.c, m68k/io-isatty.c, m68k/io-lseek.c, m68k/io-open.c, m68k/io-read.c, m68k/io-rename.c, m68k/io-stat.c, m68k/io-system.c, m68k/io-time.c, m68k/io-unlink.c, m68k/io-write.c: ... here. Include io.h. Adjust for hosted & unhosted libraries. Adjust names of gdb conversion functions. 2006-09-29 Nathan Sidwell <nathan@codesourcery.com> * m68k/bdm-semihost.S: Add more comments. Make instruction weirder. 2006-09-22 Nathan Sidwell <nathan@codesourcery.com> * m68k/bdm-crt1.c (hardware_init_hook): Use #defines for CACR bits. 2006-09-18 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in: Don't force a frame pointer on the ISRs. * m68k/bdm-crt1.c (__start1): Don't set the VBR here. (hardeare_init_hook): Define weakly. Set VBR here, enable caching if supported. * m68k/Makefile.in (bdm-semihost.o): Build from bdm-semihost.S. * m68k/bdm-semihost.c: Remove. * m68k/bdm-semihost.S: New. * m68k/bdm-crt0.S: Don't install semihosting trap handler. * m68k/bdm-close.c, bdm-exit.c, bdm-fstat.c, bdm-gettimeofday.c, bdm-isatty.c, bdm-lseek.c, bdm-open.c, bdm-read.c, bdm-rename.c, bdm-stat.c, bdm-system.c, bdm-unlink.c, bdm-write.c): Update. * m68k/bdm-isrs.c: Update comment. * m68k/bdm-semihost.h (BDM_TRAPNUM, BDM_FUNC_REG, BDM_ARG_REG, BDM_TRAP): Remove. (__bdm_semihost): Declare. 2006-09-15 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in (BDM_OTHER_OBJS): Remove sbrk.o. (BDM_SYSOBJS): Add bdm-sbrk.o. * m68k/bdm-sbrk.c: New. 2006-09-06 Nathan Sidwell <nathan@codesourcery.com> * m68k/Makefile.in (CF_SOURCES): New. (install): Install them. 2006-09-01 Nathan Sidwell <nathan@codesourcery.com> * m68k/cf.sc: Add .jcr section to .text.
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nop
halt
.long 0x4e7bf000
#endif
move.l d1,sp@-
move.l fp,sp@- /* Dummy return address */
jmp __start1