diff options
| author | Kazu Hirata <kazu@codesourcery.com> | 2006-09-01 05:41:06 +0000 |
|---|---|---|
| committer | Kazu Hirata <kazu@codesourcery.com> | 2006-09-01 05:41:06 +0000 |
| commit | c023e783e91748c9f1a8d6d19d98130c55389a3c (patch) | |
| tree | af939ae3f785a4bca156931a8e7736d6ade7ba8b /libgloss | |
| parent | 1202770601a3d1eff4901fcccf70ad9943e38dc0 (diff) | |
| download | newlib-c023e783e91748c9f1a8d6d19d98130c55389a3c.zip newlib-c023e783e91748c9f1a8d6d19d98130c55389a3c.tar.gz newlib-c023e783e91748c9f1a8d6d19d98130c55389a3c.tar.bz2 | |
libgloss/
Merge from newlib-csl-20060320-branch:
2006-08-31 Nathan Sidwell <nathan@codesourcery.com>
* m68k/bdm-crt1.c: Call hardware_init_hook before copying
initialized data.
* m68k/Makefile.in (CF_BDM_SCRIPTS): Rename to CF_RAM_SCRIPTS.
(CF_SCRIPTS): Update.
(%-bdm.ld): Rename to %-ram.ld.
2006-08-25 Nathan Sidwell <nathan@codesourcery.com>
* m68k/Makefile.in (DBUG_BSP, DBUG_OBJS): Remove.
(BDM_CRT0): New.
(BDM_OBJS): Add bdm-crt1.o.
(BDM_OTHER_OBJS): Remove print.o putnum.o
(CF_BOARDS): New.
(CF_BDM_SCRIPTS): Generated name of ram scripts.
(CF_ROM_SCRIPTS): Generated name of rom scripts.
(CF_SCRIPTS): Adjust.
(all): Add BDM_CRT0.
(bdm-crt0.o, bdm-crt1.o): New targets.
(bdm-isv.o): Remove.
(m5208evb, m5213evb, m52235evb, m5235evb, m5273c3, m5282evb,
m5329evb, m5485evb): New.
(%-bdm.ld, %-rom.ld): New. Replace individual linker script rules.
(install): Remove DBUG installs.
* m68k/bdm-crt0.S: New.
* m68k/bdm-crt1.c: New.
* m68k/bdm-exit.c: Call __reset.
* m68k/bdm-isv.c: Remove.
* m68k/cf.sc: Adjust to produce either rom or ram images.
* m68k/dbug-exit.S, m68k/dbug-inbyte.S, m68k/dbug-outbyte.S: Remove.
2006-07-24 Nathan Sidwell <nathan@codesourcery.com>
Bug 844
* m68k/cf.sc: Set entry point to _start.
* m68k/crt0.X (_start): New name for entrypoint
(start): Weak alias for start.
2006-06-09 Nathan Sidwell <nathan@codesourcery.com>
* m68k/bdm-system.c (_system): Support system(NULL).
2006-06-08 Nathan Sidwell <nathan@codesourcery.com>
* m68k/bdm-system.c (_system): Properly encode non failure exit
code.
2006-06-05 Nathan Sidwell <nathan@codesourcery.com>
* m68k/Makefile.in (BDM_SYSOBJS): Remove bdm-inbyte.o.
Add bdm-time.o.
* m68k/bdm-close.c: Add copyright notice.
* m68k/bdm-fstat.c: Add copyright notice.
* m68k/bdm-gettimeofday.c: Add copyright notice.
* m68k/bdm-inbyte.c: Remove.
* m68k/bdm-isatty.c: Add copyright notice.
* m68k/bdm-lseek.c: Add copyright notice. Fix &/| thinko.
* m68k/bdm-open.c: Add copyright notice.
* m68k/bdm-read.c: Add copyright notice.
* m68k/bdm-rename.c: Add copyright notice.
* m68k/bdm-stat.c: Add copyright notice.
* m68k/bdm-system.c: Add copyright notice.
* m68k/bdm-time.c: New.
* m68k/bdm-unlink.c: Add copyright notice.
* m68k/bdm-write.c: Add copyright notice.
2006-05-25 Nathan Sidwell <nathan@codesourcery.com>
* m68k/Makefile.in (m52235-dbug.ld, m52235-bdm.ld): New
scripts.
2006-05-24 Nathan Sidwell <nathan@codesourcery.com>
* m68k/Makefile.in (BDM_SYSOBJS): Remove bdm-outbyte.o.
* m68k/bdm-outbyte.c: Delete.
* m68k/bdm-semihost.h (BDM_OUTBYTE): Mark as obsolete.
2006-05-22 Sandra Loosemore <sandra@codesourcery.com>
* m68k/bdm-semihost.h: Add new constants for additional
semihosting functions. Add new BDM_TRAP macro to encapsulate
inline asm.
* m68k/bdm-exit.c (_exit): Use new BDM_TRAP macro.
* m68k/bdm-outbyte.c (outbyte): Ditto.
* m68k/bdm-isrs.c, m68k/bdm-isv.c: Former BDM_TRAP
now called BDM_TRAPNUM.
* m68k/bdm-gdb.h, m68k/bdm-gdb.c: New files
containing declarations and conversion functions for GDB's fileio
protocol.
* m68k/bdm-close.c: New file to define corresponding function.
* m68k/bdm-fstat.c: Ditto.
* m68k/bdm-gettimeofday.c: Ditto.
* m68k/bdm-isatty.c: Ditto.
* m68k/bdm-lseek.c: Ditto.
* m68k/bdm-open.c: Ditto.
* m68k/bdm-read.c: Ditto.
* m68k/bdm-rename.c: Ditto.
* m68k/bdm-stat.c: Ditto.
* m68k/bdm-system.c: Ditto.
* m68k/bdm-unlink.c: Ditto.
* m68k/bdm-write.c Ditto.
* m68k/Makefile.in: Add dependencies for new files.
2006-03-29 Nathan Sidwell <nathan@codesourcery.com>
* m68k/bdm-isv.c (software_init_hook): Fix trap numbering.
* m68k/Makefile.in (CF_SCRIPTS): Add m5329 board.
Reorder.
(*-dbug.ld, *-bdm.ld): Add appropriate IO definition.
(m5329evb-dbug.ld, m5329evb-bdm.ld): New.
* cf.sc (GROUP): Revert previous change. Add IO library.
* m68k/Makefile.in (BDM_BSP, BDM_OBJS, BDM_ISRS): New.
(CF_SCRIPTS): Rename dbug scripts. Add bdm scripts. Add m5485
scripts.
(all): Add new targets.
(BDM_BSP): New target.
(bdm-isv.o, bdm-exit.o, bdm-outbyte.o, bdm-semihost.o): New
targets.
(BDM_ISRS): New targets.
(m5208evb.ld, m5213evb.ld, m5235evb.ld, m5272c3.ld, m5282evb.ld):
Rename and adjust.
(m5485evb-dbug): New.
(m5208evb-bdm.ld, m5213evb-bdm.ld, m5235evb-bdm.ld,
m5272c3-bdm.ld, m5282evb-bdm.ld, m5485evb-bdm.ld): New.
(install): Add BDM_BSP.
* m68k/bdm-exit.c: New
* m68k/bdm-inbyte.c: New
* m68k/bdm-outbyte.c: New
* m68k/bdm-semihost.c: New
* m68k/bdm-semihost.h: New
* m68k/bdm-isrs.c: New.
* m68k/bdm-isv.c: New.
* dbug-cf.sc: Renamed to ...
* cf.sc: ... here. Add bdm flexibility. Remove GROUP
2006-05-22 Sandra Loosemore <sandra@codesourcery.com>
* m68k/bdm-semihost.h: Add new constants for additional
semihosting functions. Add new BDM_TRAP macro to encapsulate
inline asm.
* m68k/bdm-exit.c (_exit): Use new BDM_TRAP macro.
* m68k/bdm-outbyte.c (outbyte): Ditto.
* m68k/bdm-isrs.c, m68k/bdm-isv.c: Former BDM_TRAP
now called BDM_TRAPNUM.
* m68k/bdm-gdb.h, m68k/bdm-gdb.c: New files
containing declarations and conversion functions for GDB's fileio
protocol.
* m68k/bdm-close.c: New file to define corresponding function.
* m68k/bdm-fstat.c: Ditto.
* m68k/bdm-gettimeofday.c: Ditto.
* m68k/bdm-isatty.c: Ditto.
* m68k/bdm-lseek.c: Ditto.
* m68k/bdm-open.c: Ditto.
* m68k/bdm-read.c: Ditto.
* m68k/bdm-rename.c: Ditto.
* m68k/bdm-stat.c: Ditto.
* m68k/bdm-system.c: Ditto.
* m68k/bdm-unlink.c: Ditto.
* m68k/bdm-write.c Ditto.
* m68k/Makefile.in: Add dependencies for new files.
newlib/
Merge from newlib-csl-20060320-branch:
2006-05-22 Sandra Loosemore <sandra@codesourcery.com>
* configure.host: Tell it we have _rename and _system when
building m68k-unknown-elf.
Diffstat (limited to 'libgloss')
25 files changed, 1508 insertions, 111 deletions
diff --git a/libgloss/ChangeLog b/libgloss/ChangeLog index 86591ac..64266f6 100644 --- a/libgloss/ChangeLog +++ b/libgloss/ChangeLog @@ -1,3 +1,171 @@ +2006-09-01 Kazu Hirata <kazu@codesourcery.com> + + Merge from newlib-csl-20060320-branch: + 2006-08-31 Nathan Sidwell <nathan@codesourcery.com> + + * m68k/bdm-crt1.c: Call hardware_init_hook before copying + initialized data. + + * m68k/Makefile.in (CF_BDM_SCRIPTS): Rename to CF_RAM_SCRIPTS. + (CF_SCRIPTS): Update. + (%-bdm.ld): Rename to %-ram.ld. + + 2006-08-25 Nathan Sidwell <nathan@codesourcery.com> + + * m68k/Makefile.in (DBUG_BSP, DBUG_OBJS): Remove. + (BDM_CRT0): New. + (BDM_OBJS): Add bdm-crt1.o. + (BDM_OTHER_OBJS): Remove print.o putnum.o + (CF_BOARDS): New. + (CF_BDM_SCRIPTS): Generated name of ram scripts. + (CF_ROM_SCRIPTS): Generated name of rom scripts. + (CF_SCRIPTS): Adjust. + (all): Add BDM_CRT0. + (bdm-crt0.o, bdm-crt1.o): New targets. + (bdm-isv.o): Remove. + (m5208evb, m5213evb, m52235evb, m5235evb, m5273c3, m5282evb, + m5329evb, m5485evb): New. + (%-bdm.ld, %-rom.ld): New. Replace individual linker script rules. + (install): Remove DBUG installs. + * m68k/bdm-crt0.S: New. + * m68k/bdm-crt1.c: New. + * m68k/bdm-exit.c: Call __reset. + * m68k/bdm-isv.c: Remove. + * m68k/cf.sc: Adjust to produce either rom or ram images. + * m68k/dbug-exit.S, m68k/dbug-inbyte.S, m68k/dbug-outbyte.S: Remove. + + 2006-07-24 Nathan Sidwell <nathan@codesourcery.com> + + Bug 844 + * m68k/cf.sc: Set entry point to _start. + * m68k/crt0.X (_start): New name for entrypoint + (start): Weak alias for start. + + 2006-06-09 Nathan Sidwell <nathan@codesourcery.com> + + * m68k/bdm-system.c (_system): Support system(NULL). + + 2006-06-08 Nathan Sidwell <nathan@codesourcery.com> + + * m68k/bdm-system.c (_system): Properly encode non failure exit + code. + + 2006-06-05 Nathan Sidwell <nathan@codesourcery.com> + + * m68k/Makefile.in (BDM_SYSOBJS): Remove bdm-inbyte.o. + Add bdm-time.o. + * m68k/bdm-close.c: Add copyright notice. + * m68k/bdm-fstat.c: Add copyright notice. + * m68k/bdm-gettimeofday.c: Add copyright notice. + * m68k/bdm-inbyte.c: Remove. + * m68k/bdm-isatty.c: Add copyright notice. + * m68k/bdm-lseek.c: Add copyright notice. Fix &/| thinko. + * m68k/bdm-open.c: Add copyright notice. + * m68k/bdm-read.c: Add copyright notice. + * m68k/bdm-rename.c: Add copyright notice. + * m68k/bdm-stat.c: Add copyright notice. + * m68k/bdm-system.c: Add copyright notice. + * m68k/bdm-time.c: New. + * m68k/bdm-unlink.c: Add copyright notice. + * m68k/bdm-write.c: Add copyright notice. + + 2006-05-25 Nathan Sidwell <nathan@codesourcery.com> + + * m68k/Makefile.in (m52235-dbug.ld, m52235-bdm.ld): New + scripts. + + 2006-05-24 Nathan Sidwell <nathan@codesourcery.com> + + * m68k/Makefile.in (BDM_SYSOBJS): Remove bdm-outbyte.o. + * m68k/bdm-outbyte.c: Delete. + * m68k/bdm-semihost.h (BDM_OUTBYTE): Mark as obsolete. + + 2006-05-22 Sandra Loosemore <sandra@codesourcery.com> + + * m68k/bdm-semihost.h: Add new constants for additional + semihosting functions. Add new BDM_TRAP macro to encapsulate + inline asm. + * m68k/bdm-exit.c (_exit): Use new BDM_TRAP macro. + * m68k/bdm-outbyte.c (outbyte): Ditto. + * m68k/bdm-isrs.c, m68k/bdm-isv.c: Former BDM_TRAP + now called BDM_TRAPNUM. + * m68k/bdm-gdb.h, m68k/bdm-gdb.c: New files + containing declarations and conversion functions for GDB's fileio + protocol. + * m68k/bdm-close.c: New file to define corresponding function. + * m68k/bdm-fstat.c: Ditto. + * m68k/bdm-gettimeofday.c: Ditto. + * m68k/bdm-isatty.c: Ditto. + * m68k/bdm-lseek.c: Ditto. + * m68k/bdm-open.c: Ditto. + * m68k/bdm-read.c: Ditto. + * m68k/bdm-rename.c: Ditto. + * m68k/bdm-stat.c: Ditto. + * m68k/bdm-system.c: Ditto. + * m68k/bdm-unlink.c: Ditto. + * m68k/bdm-write.c Ditto. + * m68k/Makefile.in: Add dependencies for new files. + + 2006-03-29 Nathan Sidwell <nathan@codesourcery.com> + + * m68k/bdm-isv.c (software_init_hook): Fix trap numbering. + + * m68k/Makefile.in (CF_SCRIPTS): Add m5329 board. + Reorder. + (*-dbug.ld, *-bdm.ld): Add appropriate IO definition. + (m5329evb-dbug.ld, m5329evb-bdm.ld): New. + * cf.sc (GROUP): Revert previous change. Add IO library. + + * m68k/Makefile.in (BDM_BSP, BDM_OBJS, BDM_ISRS): New. + (CF_SCRIPTS): Rename dbug scripts. Add bdm scripts. Add m5485 + scripts. + (all): Add new targets. + (BDM_BSP): New target. + (bdm-isv.o, bdm-exit.o, bdm-outbyte.o, bdm-semihost.o): New + targets. + (BDM_ISRS): New targets. + (m5208evb.ld, m5213evb.ld, m5235evb.ld, m5272c3.ld, m5282evb.ld): + Rename and adjust. + (m5485evb-dbug): New. + (m5208evb-bdm.ld, m5213evb-bdm.ld, m5235evb-bdm.ld, + m5272c3-bdm.ld, m5282evb-bdm.ld, m5485evb-bdm.ld): New. + (install): Add BDM_BSP. + * m68k/bdm-exit.c: New + * m68k/bdm-inbyte.c: New + * m68k/bdm-outbyte.c: New + * m68k/bdm-semihost.c: New + * m68k/bdm-semihost.h: New + * m68k/bdm-isrs.c: New. + * m68k/bdm-isv.c: New. + * dbug-cf.sc: Renamed to ... + * cf.sc: ... here. Add bdm flexibility. Remove GROUP + + 2006-05-22 Sandra Loosemore <sandra@codesourcery.com> + + * m68k/bdm-semihost.h: Add new constants for additional + semihosting functions. Add new BDM_TRAP macro to encapsulate + inline asm. + * m68k/bdm-exit.c (_exit): Use new BDM_TRAP macro. + * m68k/bdm-outbyte.c (outbyte): Ditto. + * m68k/bdm-isrs.c, m68k/bdm-isv.c: Former BDM_TRAP + now called BDM_TRAPNUM. + * m68k/bdm-gdb.h, m68k/bdm-gdb.c: New files + containing declarations and conversion functions for GDB's fileio + protocol. + * m68k/bdm-close.c: New file to define corresponding function. + * m68k/bdm-fstat.c: Ditto. + * m68k/bdm-gettimeofday.c: Ditto. + * m68k/bdm-isatty.c: Ditto. + * m68k/bdm-lseek.c: Ditto. + * m68k/bdm-open.c: Ditto. + * m68k/bdm-read.c: Ditto. + * m68k/bdm-rename.c: Ditto. + * m68k/bdm-stat.c: Ditto. + * m68k/bdm-system.c: Ditto. + * m68k/bdm-unlink.c: Ditto. + * m68k/bdm-write.c Ditto. + * m68k/Makefile.in: Add dependencies for new files. + 2006-08-30 Kazunori Asayama <asayama@sm.sony.co.jp> * spu/syscalls.c: Add a new argument to _send_to_ppe() to diff --git a/libgloss/m68k/Makefile.in b/libgloss/m68k/Makefile.in index 8faf5ff..ad3f69f 100644 --- a/libgloss/m68k/Makefile.in +++ b/libgloss/m68k/Makefile.in @@ -118,12 +118,32 @@ IDPGDB_BSP= libidpgdb.a IDPGDB_OBJS= leds.o idp-inbyte.o idp-gdb-outbyte.o mc68ec.o # -# here's all the DBUG target stuff +# here's all the BDM semihosting stuff # -DBUG_BSP= libdbug.a -DBUG_OBJS= dbug-exit.o dbug-inbyte.o dbug-outbyte.o - -CF_SCRIPTS= m5208evb.ld m5213evb.ld m5235evb.ld m5272c3.ld m5282evb.ld +BDM_CRT0= bdm-crt0.o +BDM_BSP= libbdm.a +BDM_OBJS= bdm-crt1.o bdm-semihost.o $(BDM_SYSOBJS) \ + $(patsubst %,bdm-%.o,${BDM_ISRS}) +BDM_OTHER_OBJS= getpid.o kill.o sbrk.o +BDM_SYSOBJS= bdm-close.o bdm-exit.o bdm-fstat.o bdm-gdb.o \ + bdm-gettimeofday.o bdm-isatty.o bdm-lseek.o \ + bdm-open.o bdm-read.o bdm-rename.o \ + bdm-stat.o bdm-system.o bdm-time.o bdm-unlink.o bdm-write.o +BDM_ISRS= other_interrupt reset access_error address_error \ + illegal_instruction divide_by_zero privilege_violation \ + trace unimplemented_line_a_opcode unimplemented_line_f_opcode \ + non_pc_breakpoint_debug_interrupt pc_breakpoint_debug_interrupt \ + format_error spurious_interrupt trap0 trap1 trap2 trap3 trap4 \ + trap5 trap6 trap7 trap8 trap9 trap10 trap11 trap12 trap13 trap14 \ + trap15 fp_branch_unordered fp_inexact_result fp_divide_by_zero \ + fp_underflow fp_operand_error fp_overflow fp_input_not_a_number \ + fp_input_denormalized_number unsupported_instruction + +CF_BOARDS := m5208evb m5213evb m52235evb m5235evb m5272c3 m5282evb \ + m5329evb m5485evb +CF_RAM_SCRIPTS := $(patsubst %,%-ram.ld,$(CF_BOARDS)) +CF_ROM_SCRIPTS := $(patsubst %,%-rom.ld,$(CF_BOARDS)) +CF_SCRIPTS= $(CF_RAM_SCRIPTS) $(CF_ROM_SCRIPTS) # Host specific makefile fragment comes in here. @host_makefile_frag@ @@ -132,7 +152,8 @@ CF_SCRIPTS= m5208evb.ld m5213evb.ld m5235evb.ld m5272c3.ld m5282evb.ld # build a test program for each target board. Just trying to get # it to link is a good test, so we ignore all the errors for now. # -all: ${SIM_CRT0} ${SIM_BSP} ${CRT0} ${BCC_BSP} ${IDP_BSP} ${IDPGDB_BSP} ${MVME135_BSP} ${MVME162_BSP} ${DBUG_BSP} ${CF_SCRIPTS} +all: ${SIM_CRT0} ${SIM_BSP} ${CRT0} ${BCC_BSP} ${IDP_BSP} ${IDPGDB_BSP} \ + ${MVME135_BSP} ${MVME162_BSP} ${BDM_CRT0} ${BDM_BSP} ${CF_SCRIPTS} # # here's where we build the board support packages for each target @@ -153,8 +174,8 @@ ${IDPGDB_BSP}: $(OBJS) ${IDPGDB_OBJS} ${AR} ${ARFLAGS} $@ $(OBJS) ${IDPGDB_OBJS} ${RANLIB} $@ -${DBUG_BSP}: $(OBJS) ${DBUG_OBJS} - ${AR} ${ARFLAGS} $@ $(OBJS) ${DBUG_OBJS} +${BDM_BSP}: $(BDM_OTHER_OBJS) ${BDM_OBJS} + ${AR} ${ARFLAGS} $@ $(BDM_OTHER_OBJS) ${BDM_OBJS} ${RANLIB} $@ ${MVME135_BSP}: $(OBJS) ${MVME135_OBJS} @@ -165,20 +186,37 @@ ${MVME162_BSP}: $(OBJS) ${MVME162_OBJS} ${AR} ${ARFLAGS} $@ $(OBJS) ${MVME162_OBJS} ${RANLIB} $@ -m5208evb.ld: dbug-cf.sc Makefile - RAMSTART=1024M RAMSIZE=16M RAMDBUG=128K ${SHELL} $< > $@ - -m5213evb.ld: dbug-cf.sc Makefile - RAMSTART=512M RAMSIZE=32K RAMDBUG=8K ${SHELL} $< > $@ - -m5235evb.ld: dbug-cf.sc Makefile - RAMSTART=0M RAMSIZE=16M RAMDBUG=64K ${SHELL} $< > $@ - -m5272c3.ld: dbug-cf.sc Makefile - RAMSTART=0M RAMSIZE=4M RAMDBUG=128K ${SHELL} $< > $@ - -m5282evb.ld: dbug-cf.sc Makefile - RAMSTART=0M RAMSIZE=16M RAMDBUG=64K ${SHELL} $< > $@ +$(BDM_SYSOBJS): %.o: %.c bdm-semihost.h bdm-gdb.h + $(CC) $(CFLAGS_FOR_TARGET) $(INCLUDES) -c $< -o $@ +bdm-crt0.o : bdm-crt0.S + $(CC) $(CFLAGS_FOR_TARGET) $(INCLUDES) -c $< -o $@ +bdm-crt1.o : bdm-crt1.c + $(CC) $(CFLAGS_FOR_TARGET) $(INCLUDES) -c $< -o $@ +#We need to omit the frame pointer to ensure there is no prologue. +bdm-semihost.o : bdm-semihost.c + $(CC) $(CFLAGS_FOR_TARGET) $(INCLUDES) -c $< -o $@ -fomit-frame-pointer + +# We need to keep the frame pointer to make sure there's some +# prologue. Otherwise we get confused with the semihosting reoutine. +$(patsubst %,bdm-%.o,${BDM_ISRS}) : bdm-isrs.c + $(CC) $(CFLAGS_FOR_TARGET) $(INCLUDES) -c $< -o $@ \ + -DL_$(patsubst bdm-%.o,%,$@) -fno-omit-frame-pointer + +# RAM ROM +m5208evb := 1024M 16M 0M 2M +m5213evb := 512M 32K 0M 256K +m52235evb := 512M 32K 0M 256K +m5235evb := 0M 16M 0xFFE00000 2M +m5273c3 := 0M 4M 0xFFE00000 2M +m5282evb := 0M 16M 0xFFE00000 2M +m5329evb := 1024M 32M 0M 2M +m5485evb := 0M 64M 1024M 16M + +%-ram.ld : cf.sc Makefile + RAM=$(word 1,$($*)) RAM_SIZE=$(word 2,$($*)) ${SHELL} $< >$@ +%-rom.ld : cf.sc Makefile + RAM=$(word 1,$($*)) RAM_SIZE=$(word 2,$($*)) \ + ROM=$(word 3,$($*)) ROM_SIZE=$(word 4,$($*)) ${SHELL} $< >$@ leds.o: ${srcdir}/leds.c $(CC) $(CFLAGS_FOR_TARGET) $(INCLUDES) -c $< @@ -296,8 +334,10 @@ install: # install MVME162lx stuff $(INSTALL_PROGRAM) $(MVME162_BSP) $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}/$(MVME162_BSP) $(INSTALL_DATA) ${srcdir}/mvme162.ld $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}/mvme162.ld - # install DBUG stuff - $(INSTALL_PROGRAM) $(DBUG_BSP) $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}/$(DBUG_BSP) + # install BDM stuff + $(INSTALL_PROGRAM) $(BDM_CRT0) $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}/$(BDM_CRT0) + $(INSTALL_PROGRAM) $(BDM_BSP) $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}/$(BDM_BSP) + $(INSTALL_DATA) ${srcdir}/sbc5204.ld $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}/sbc5204.ld $(INSTALL_DATA) ${srcdir}/sbc5206.ld $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}/sbc5206.ld for script in $(CF_SCRIPTS) ; \ diff --git a/libgloss/m68k/dbug-outbyte.S b/libgloss/m68k/bdm-close.c index 9d0c864..40ddf9f 100644 --- a/libgloss/m68k/dbug-outbyte.S +++ b/libgloss/m68k/bdm-close.c @@ -1,7 +1,7 @@ /* - * dbug-outbyte.S -- + * bdm-close.c -- * - * Copyright (c) 1996 Cygnus Support + * 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 @@ -14,21 +14,25 @@ * they apply. */ -#include "asm.h" - - .text - .global SYM (outbyte) - .global SYM (putDebugChar) +#include "bdm-semihost.h" +#include "bdm-gdb.h" +#include <unistd.h> +#include <errno.h> /* - * outbyte -- sends a byte out the serial port - * d0 - contains the byte to be sent + * close -- close a file descriptor. + * input parameters: + * 0 : file descriptor + * output parameters: + * 0 : result + * 1 : errno */ - .text - .align 2 -SYM (putDebugChar): /* symbol name used by m68k-stub */ -SYM (outbyte): - movel sp@(4),d1 - movl IMM(0x13),d0 - trap IMM(15) - rts + +int close (int fd) +{ + gdb_parambuf_t parameters; + parameters[0] = (uint32_t) fd; + BDM_TRAP (BDM_CLOSE, (uint32_t)parameters); + errno = convert_from_gdb_errno (parameters[1]); + return parameters[0]; +} diff --git a/libgloss/m68k/bdm-crt0.S b/libgloss/m68k/bdm-crt0.S new file mode 100644 index 0000000..dac6ac4 --- /dev/null +++ b/libgloss/m68k/bdm-crt0.S @@ -0,0 +1,85 @@ +/* The interrupt table. + * + * 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 + + .globl __interrupt_vector +__interrupt_vector: + .long __stack /* 0 */ + .long __reset /* 1 */ + .long __access_error /* 2 */ + .long __address_error /* 3 */ + .long __illegal_instruction /* 4 */ + .long __divide_by_zero /* 5 */ + .long __other_interrupt /* 6 */ + .long __other_interrupt /* 7 */ + .long __privilege_violation /* 8 */ + .long __trace /* 9 */ + .long __unimplemented_line_a_opcode /* 10 */ + .long __unimplemented_line_f_opcode /* 11 */ + .long __non_pc_breakpoint_debug_interrupt /* 12 */ + .long __pc_breakpoint_debug_interrupt /* 13 */ + .long __format_error /* 14 */ + .rept 24 - 15 + .long __other_interrupt /* [15,24) */ + .endr + .long __spurious_interrupt /* 24 */ + .rept 32 - 25 + .long __other_interrupt /* [25,32) */ + .endr + .long __trap0 /* 32 */ + .long __trap1 /* 33 */ + .long __trap2 /* 34 */ + .long __trap3 /* 35 */ + .long __trap4 /* 36 */ + .long __trap5 /* 37 */ + .long __trap6 /* 38 */ + .long __trap7 /* 39 */ + .long __trap8 /* 40 */ + .long __trap9 /* 41 */ + .long __trap10 /* 42 */ + .long __trap11 /* 43 */ + .long __trap12 /* 44 */ + .long __trap13 /* 45 */ + .long __trap14 /* 46 */ + .long __bdm_semihosting /* 47 */ + .long __fp_branch_unordered /* 48 */ + .long __fp_inexact_result /* 49 */ + .long __fp_divide_by_zero /* 50 */ + .long __fp_underflow /* 51 */ + .long __fp_operand_error /* 52 */ + .long __fp_overflow /* 53 */ + .long __fp_input_not_a_number /* 54 */ + .long __fp_input_denormalized_number /* 55 */ + .rept 61 - 56 + .long __other_interrupt /* [56,61) */ + .endr + .long __unsupported_instruction /* 61 */ + .rept 64 - 62 + .long __other_interrupt /* [62,64) */ + .endr + .rept 256-64 + .long __other_interrupt /* [64,256) */ + .endr + + .extern __stack + .extern __start1 + .globl __start +__start: + /* Initialize stack */ + movel IMM(__stack), sp + movel IMM(0), fp + jmp __start1 diff --git a/libgloss/m68k/bdm-crt1.c b/libgloss/m68k/bdm-crt1.c new file mode 100644 index 0000000..159e86a --- /dev/null +++ b/libgloss/m68k/bdm-crt1.c @@ -0,0 +1,64 @@ +/* Initialization code for coldfire boards. + * + * 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 <stdlib.h> + +extern const int __interrupt_vector[]; +extern void __reset (void); + +extern const char __data_load[] __attribute__ ((aligned (4))); +extern char __data_start[] __attribute__ ((aligned (4))); +extern char __bss_start[] __attribute__ ((aligned (4))); +extern char __end[] __attribute__ ((aligned (4))); + +extern void software_init_hook (void) __attribute__ ((weak)); +extern void hardware_init_hook (void) __attribute__ ((weak)); +extern void __INIT_SECTION__ (void); +extern void __FINI_SECTION__ (void); + +extern int main (int, char **, char **); + +/* This is called from a tiny assembly stub that just initializes the + stack pointer. */ +void __start1 (void) +{ + unsigned ix; + + if (hardware_init_hook) + hardware_init_hook (); + + /* Set the VBR. */ + __asm__ __volatile__ ("movec.l %0,%/vbr" :: "r" (__interrupt_vector)); + + /* Initialize memory */ + if (__data_load != __data_start) + memcpy (__data_start, __data_load, __bss_start - __data_start); + memset (__bss_start, 0, __end - __bss_start); + + if (software_init_hook) + software_init_hook (); + + __INIT_SECTION__ (); + + /* I'm not sure how useful it is to have a fini_section in an + embedded system. */ + atexit (__FINI_SECTION__); + + ix = main (0, NULL, NULL); + exit (ix); + + while (1) + __reset (); +} diff --git a/libgloss/m68k/dbug-exit.S b/libgloss/m68k/bdm-exit.c index 6baae8b..5223bcd 100644 --- a/libgloss/m68k/dbug-exit.S +++ b/libgloss/m68k/bdm-exit.c @@ -1,7 +1,7 @@ /* - * dbug-exit.S -- + * bdm-exit.c -- * - * Copyright (c) 1996 Cygnus Support + * 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 @@ -14,16 +14,20 @@ * they apply. */ -#include "asm.h" +#include "bdm-semihost.h" +#include "bdm-gdb.h" - .text - .global SYM (_exit) -/* - * _exit -- Exit from the application. Normally we cause a user trap - * to return to the ROM monitor for another run. +extern void __reset (void); + +/* + * _exit -- Exit from the application. */ - .text - .align 2 -SYM (_exit): - moveql IMM(0),d0 - trap IMM(15) + +void __attribute__ ((noreturn)) _exit (int code) +{ + while (1) + { + BDM_TRAP (BDM_EXIT, code); + __reset (); + } +} diff --git a/libgloss/m68k/bdm-fstat.c b/libgloss/m68k/bdm-fstat.c new file mode 100644 index 0000000..f93f854 --- /dev/null +++ b/libgloss/m68k/bdm-fstat.c @@ -0,0 +1,44 @@ +/* + * bdm-fstat.c -- + * + * 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 "bdm-semihost.h" +#include "bdm-gdb.h" +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +#include <errno.h> + +/* + * fstat -- get file information + * input parameters: + * 0 : file descriptor + * 1 : stat buf ptr + * output parameters: + * 0 : result + * 1 : errno + */ + +int fstat (int fd, struct stat *buf) +{ + gdb_parambuf_t parameters; + struct gdb_stat gbuf; + parameters[0] = (uint32_t) fd; + parameters[1] = (uint32_t) &gbuf; + BDM_TRAP (BDM_FSTAT, (uint32_t)parameters); + convert_from_gdb_stat (&gbuf, buf); + errno = convert_from_gdb_errno (parameters[1]); + return parameters[0]; +} diff --git a/libgloss/m68k/bdm-gdb.c b/libgloss/m68k/bdm-gdb.c new file mode 100644 index 0000000..7ad1ea1 --- /dev/null +++ b/libgloss/m68k/bdm-gdb.c @@ -0,0 +1,140 @@ +/* + * bdm support for GDB's remote fileio protocol + * + * 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 "bdm-gdb.h" +#include <fcntl.h> +#include <unistd.h> +#include <errno.h> + +gdb_mode_t +convert_to_gdb_mode_t (mode_t m) +{ + gdb_mode_t result = 0; + if (m & S_IFREG) + result |= GDB_S_IFREG; + if (m & S_IFDIR) + result |= GDB_S_IFDIR; + if (m & S_IRUSR) + result |= GDB_S_IRUSR; + if (m & S_IWUSR) + result |= GDB_S_IWUSR; + if (m & S_IXUSR) + result |= GDB_S_IXUSR; + if (m & S_IRGRP) + result |= GDB_S_IRGRP; + if (m & S_IWGRP) + result |= GDB_S_IWGRP; + if (m & S_IXGRP) + result |= GDB_S_IXGRP; + if (m & S_IROTH) + result |= GDB_S_IROTH; + if (m & S_IWOTH) + result |= GDB_S_IWOTH; + if (m & S_IXOTH) + result |= GDB_S_IXOTH; + return result; +} + +int32_t +convert_to_gdb_open_flags (int f) +{ + int32_t result = 0; + if (f & O_RDONLY) + result |= GDB_O_RDONLY; + if (f & O_WRONLY) + result |= GDB_O_WRONLY; + if (f & O_RDWR) + result |= GDB_O_RDWR; + if (f & O_APPEND) + result |= GDB_O_APPEND; + if (f & O_CREAT) + result |= GDB_O_CREAT; + if (f & O_TRUNC) + result |= GDB_O_TRUNC; + if (f & O_EXCL) + result |= GDB_O_EXCL; + return result; +} + +int32_t +convert_to_gdb_lseek_flags (int f) +{ + if (f == SEEK_CUR) + return GDB_SEEK_CUR; + else if (f == SEEK_END) + return GDB_SEEK_END; + else + return GDB_SEEK_SET; +} + +void +convert_from_gdb_stat (const struct gdb_stat *gs, + struct stat *s) +{ + s->st_dev = gs->st_dev; + s->st_ino = gs->st_ino; + s->st_mode = gs->st_mode; + s->st_nlink = gs->st_nlink; + s->st_uid = gs->st_uid; + s->st_gid = gs->st_gid; + s->st_rdev = gs->st_rdev; + s->st_size = gs->st_size; + s->st_blksize = gs->st_blksize; + s->st_blocks = gs->st_blocks; + s->st_atime = gs->st_atime; + s->st_mtime = gs->st_mtime; + s->st_ctime = gs->st_ctime; +} + +void +convert_from_gdb_timeval (const struct gdb_timeval *gt, + struct timeval *t) +{ + t->tv_sec = gt->tv_sec; + t->tv_usec = gt->tv_usec; +} + +int +convert_from_gdb_errno (int32_t err) +{ + switch (err) + { + case 0: return 0; + case GDB_EPERM: return EPERM; + case GDB_ENOENT: return ENOENT; + case GDB_EINTR: return EINTR; + case GDB_EBADF: return EBADF; + case GDB_EACCES: return EACCES; + case GDB_EFAULT: return EFAULT; + case GDB_EBUSY: return EBUSY; + case GDB_EEXIST: return EEXIST; + case GDB_ENODEV: return ENODEV; + case GDB_ENOTDIR: return ENOTDIR; + case GDB_EISDIR: return EISDIR; + case GDB_EINVAL: return EINVAL; + case GDB_ENFILE: return ENFILE; + case GDB_EMFILE: return EMFILE; + case GDB_EFBIG: return EFBIG; + case GDB_ENOSPC: return ENOSPC; + case GDB_ESPIPE: return ESPIPE; + case GDB_EROFS: return EROFS; + case GDB_ENAMETOOLONG: return ENAMETOOLONG; + case GDB_EUNKNOWN: + default: + return EIO; + } +} + diff --git a/libgloss/m68k/bdm-gdb.h b/libgloss/m68k/bdm-gdb.h new file mode 100644 index 0000000..a97479c --- /dev/null +++ b/libgloss/m68k/bdm-gdb.h @@ -0,0 +1,128 @@ +/* + * bdm support for GDB's remote fileio protocol + * + * 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 <stdint.h> +#include <sys/types.h> +#include <sys/time.h> +#include <sys/stat.h> + +/* Protocol specific representation of datatypes, as specified in D.9.11 + * of the GDB manual. + * Note that since the m68k is big-endian, we can use native + * representations of integer datatypes in structured datatypes. */ + +typedef uint32_t gdb_mode_t; +typedef uint32_t gdb_time_t; + +struct gdb_stat { + uint32_t st_dev; /* device */ + uint32_t st_ino; /* inode */ + gdb_mode_t st_mode; /* protection */ + uint32_t st_nlink; /* number of hard links */ + uint32_t st_uid; /* user ID of owner */ + uint32_t st_gid; /* group ID of owner */ + uint32_t st_rdev; /* device type (if inode device) */ + uint64_t st_size; /* total size, in bytes */ + uint64_t st_blksize; /* blocksize for filesystem I/O */ + uint64_t st_blocks; /* number of blocks allocated */ + gdb_time_t st_atime; /* time of last access */ + gdb_time_t st_mtime; /* time of last modification */ + gdb_time_t st_ctime; /* time of last change */ +}; + +struct gdb_timeval { + gdb_time_t tv_sec; /* second */ + uint64_t tv_usec; /* microsecond */ +}; + + +/* Parameters are passed between the library and the debugging stub + * in a fixed-size buffer. + */ + +typedef uint32_t gdb_parambuf_t[4]; + + +/* open flags */ + +#define GDB_O_RDONLY 0x0 +#define GDB_O_WRONLY 0x1 +#define GDB_O_RDWR 0x2 +#define GDB_O_APPEND 0x8 +#define GDB_O_CREAT 0x200 +#define GDB_O_TRUNC 0x400 +#define GDB_O_EXCL 0x800 + +/* mode_t values */ + +#define GDB_S_IFREG 0100000 +#define GDB_S_IFDIR 040000 +#define GDB_S_IRUSR 0400 +#define GDB_S_IWUSR 0200 +#define GDB_S_IXUSR 0100 +#define GDB_S_IRGRP 040 +#define GDB_S_IWGRP 020 +#define GDB_S_IXGRP 010 +#define GDB_S_IROTH 04 +#define GDB_S_IWOTH 02 +#define GDB_S_IXOTH 01 + +/* errno values */ + +#define GDB_EPERM 1 +#define GDB_ENOENT 2 +#define GDB_EINTR 4 +#define GDB_EBADF 9 +#define GDB_EACCES 13 +#define GDB_EFAULT 14 +#define GDB_EBUSY 16 +#define GDB_EEXIST 17 +#define GDB_ENODEV 19 +#define GDB_ENOTDIR 20 +#define GDB_EISDIR 21 +#define GDB_EINVAL 22 +#define GDB_ENFILE 23 +#define GDB_EMFILE 24 +#define GDB_EFBIG 27 +#define GDB_ENOSPC 28 +#define GDB_ESPIPE 29 +#define GDB_EROFS 30 +#define GDB_ENAMETOOLONG 91 +#define GDB_EUNKNOWN 9999 + +/* lseek flags */ + +#define GDB_SEEK_SET 0 +#define GDB_SEEK_CUR 1 +#define GDB_SEEK_END 2 + + +/* conversion functions */ + +extern gdb_mode_t convert_to_gdb_mode_t (mode_t m); +extern int32_t convert_to_gdb_open_flags (int f); +extern int32_t convert_to_gdb_lseek_flags (int f); + +extern void convert_from_gdb_stat (const struct gdb_stat *gs, + struct stat *s); +extern void convert_from_gdb_timeval (const struct gdb_timeval *gt, + struct timeval *t); +extern int convert_from_gdb_errno (int32_t err); + + + + + diff --git a/libgloss/m68k/bdm-gettimeofday.c b/libgloss/m68k/bdm-gettimeofday.c new file mode 100644 index 0000000..1549542 --- /dev/null +++ b/libgloss/m68k/bdm-gettimeofday.c @@ -0,0 +1,47 @@ +/* + * bdm-gettimeofday.c -- + * + * 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 "bdm-semihost.h" +#include "bdm-gdb.h" +#include <sys/time.h> +#include <errno.h> + +/* + * gettimeofday -- get the current time + * input parameters: + * 0 : timeval ptr + * output parameters: + * 0 : result + * 1 : errno + */ + +int gettimeofday (struct timeval *tv, struct timezone *tz) +{ + gdb_parambuf_t parameters; + struct gdb_timeval gtv; + if (!tv) + return 0; + if (tz) + { + errno = EINVAL; + return -1; + } + parameters[0] = (uint32_t) >v; + BDM_TRAP (BDM_GETTIMEOFDAY, (uint32_t)parameters); + convert_from_gdb_timeval (>v, tv); + errno = convert_from_gdb_errno (parameters[1]); + return parameters[0]; +} diff --git a/libgloss/m68k/bdm-isatty.c b/libgloss/m68k/bdm-isatty.c new file mode 100644 index 0000000..1da79bc --- /dev/null +++ b/libgloss/m68k/bdm-isatty.c @@ -0,0 +1,38 @@ +/* + * bdm-isatty.c -- + * + * 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 "bdm-semihost.h" +#include "bdm-gdb.h" +#include <unistd.h> +#include <errno.h> + +/* + * isatty -- check if fd is a terminal + * input parameters: + * 0 : file descriptor + * output parameters: + * 0 : result + * 1 : errno + */ + +int isatty (int fd) +{ + gdb_parambuf_t parameters; + parameters[0] = (uint32_t) fd; + BDM_TRAP (BDM_ISATTY, (uint32_t)parameters); + errno = convert_from_gdb_errno (parameters[1]); + return parameters[0]; +} diff --git a/libgloss/m68k/bdm-isrs.c b/libgloss/m68k/bdm-isrs.c new file mode 100644 index 0000000..7ee9fba --- /dev/null +++ b/libgloss/m68k/bdm-isrs.c @@ -0,0 +1,192 @@ +/* + * bdm-isv.c -- + * + * 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. + */ + +/* This file contains default interrupt handlers code for the + interrupt vector. All but one of the interrupts are user + replaceable. + + These interrupt handlers are entered whenever the associated + interrupt occurs. All they do is stop the debugger to give the user + the opportunity to determine where the problem was. + + User trap BDM_TRAPNUM (15) is used for semi hosting support. + If you replace this one, semihosting will cease to function. */ + + +/* Each ISR is a loop containing a halt instruction */ +#define ISR_DEFINE(NAME) \ +void __attribute__((interrupt_handler)) NAME (void) \ +{ \ + while (1) \ + __asm__ __volatile__ ("halt" ::: "memory"); \ +} \ +struct eat_trailing_semicolon + +#if defined (L_other_interrupt) +ISR_DEFINE (__other_interrupt); +#endif + +#if defined (L_reset) +ISR_DEFINE (__reset); +#endif + +#if defined (L_access_error) +ISR_DEFINE (__access_error); +#endif + +#if defined (L_address_error) +ISR_DEFINE (__address_error); +#endif + +#if defined (L_illegal_instruction) +ISR_DEFINE (__illegal_instruction); +#endif + +#if defined (L_divide_by_zero) +ISR_DEFINE (__divide_by_zero); +#endif + +#if defined (L_privilege_violation) +ISR_DEFINE (__privilege_violation); +#endif + +#if defined (L_trace) +ISR_DEFINE (__trace); +#endif + +#if defined (L_unimplemented_line_a_opcode) +ISR_DEFINE (__unimplemented_line_a_opcode); +#endif + +#if defined (L_unimplemented_line_f_opcode) +ISR_DEFINE (__unimplemented_line_f_opcode); +#endif + +#if defined (L_non_pc_breakpoint_debug_interrupt) +ISR_DEFINE (__non_pc_breakpoint_debug_interrupt); +#endif + +#if defined (L_pc_breakpoint_debug_interrupt) +ISR_DEFINE (__pc_breakpoint_debug_interrupt); +#endif + +#if defined (L_format_error) +ISR_DEFINE (__format_error); +#endif + +#if defined (L_spurious_interrupt) +ISR_DEFINE (__spurious_interrupt); +#endif + +#if defined (L_trap0) +ISR_DEFINE (__trap0); +#endif + +#if defined (L_trap1) +ISR_DEFINE (__trap1); +#endif + +#if defined (L_trap2) +ISR_DEFINE (__trap2); +#endif + +#if defined (L_trap3) +ISR_DEFINE (__trap3); +#endif + +#if defined (L_trap4) +ISR_DEFINE (__trap4); +#endif + +#if defined (L_trap5) +ISR_DEFINE (__trap5); +#endif + +#if defined (L_trap6) +ISR_DEFINE (__trap6); +#endif + +#if defined (L_trap7) +ISR_DEFINE (__trap7); +#endif + +#if defined (L_trap8) +ISR_DEFINE (__trap8); +#endif + +#if defined (L_trap9) +ISR_DEFINE (__trap9); +#endif + +#if defined (L_trap10) +ISR_DEFINE (__trap10); +#endif + +#if defined (L_trap11) +ISR_DEFINE (__trap11); +#endif + +#if defined (L_trap12) +ISR_DEFINE (__trap12); +#endif + +#if defined (L_trap13) +ISR_DEFINE (__trap13); +#endif + +#if defined (L_trap14) +ISR_DEFINE (__trap14); +#endif + +#if defined (L_trap15) +ISR_DEFINE (__trap15); +#endif + +#if defined (L_fp_branch_unordered) +ISR_DEFINE (__fp_branch_unordered); +#endif + +#if defined (L_fp_inexact_result) +ISR_DEFINE (__fp_inexact_result); +#endif + +#if defined (L_fp_divide_by_zero) +ISR_DEFINE (__fp_divide_by_zero); +#endif + +#if defined (L_fp_underflow) +ISR_DEFINE (__fp_underflow); +#endif + +#if defined (L_fp_operand_error) +ISR_DEFINE (__fp_operand_error); +#endif + +#if defined (L_fp_overflow) +ISR_DEFINE (__fp_overflow); +#endif + +#if defined (L_fp_input_not_a_number) +ISR_DEFINE (__fp_input_not_a_number); +#endif + +#if defined (L_fp_input_denormalized_number) +ISR_DEFINE (__fp_input_denormalized_number); +#endif + +#if defined (L_unsupported_instruction) +ISR_DEFINE (__unsupported_instruction); +#endif diff --git a/libgloss/m68k/bdm-lseek.c b/libgloss/m68k/bdm-lseek.c new file mode 100644 index 0000000..b8308cb --- /dev/null +++ b/libgloss/m68k/bdm-lseek.c @@ -0,0 +1,46 @@ +/* + * bdm-lseek.c -- + * + * 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 "bdm-semihost.h" +#include "bdm-gdb.h" +#include <sys/types.h> +#include <unistd.h> +#include <errno.h> + +/* + * lseek -- reposition a file descriptor + * input parameters: + * 0 : file descriptor + * 1 : high word of offset + * 2 : low word of offset + * 3 : seek flag + * output parameters: + * 0 : high word of result + * 1 : low word of result + * 2 : errno + */ + +off_t lseek (int fd, off_t offset, int whence) +{ + gdb_parambuf_t parameters; + parameters[0] = (uint32_t) fd; + parameters[1] = (uint32_t) ((offset >> 32) & 0xffffffff); + parameters[2] = (uint32_t) (offset & 0xffffffff); + parameters[3] = convert_to_gdb_lseek_flags (whence); + BDM_TRAP (BDM_LSEEK, (uint32_t)parameters); + errno = convert_from_gdb_errno (parameters[2]); + return ((uint64_t)parameters[0] << 32) | ((uint64_t)parameters[1]); +} diff --git a/libgloss/m68k/bdm-open.c b/libgloss/m68k/bdm-open.c new file mode 100644 index 0000000..878cff8 --- /dev/null +++ b/libgloss/m68k/bdm-open.c @@ -0,0 +1,56 @@ +/* + * bdm-open.c -- + * + * 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 "bdm-semihost.h" +#include "bdm-gdb.h" +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <stdarg.h> +#include <string.h> +#include <errno.h> + +/* + * open -- Open a file. + * input parameters: + * 0 : fname ptr + * 1 : fname length + * 2 : flags + * 3 : mode + * output parameters: + * 0 : result + * 1 : errno + */ + +int open (const char *fname, int flags, ...) +{ + gdb_parambuf_t parameters; + parameters[0] = (uint32_t) fname; + parameters[1] = strlen (fname) + 1; + parameters[2] = convert_to_gdb_open_flags (flags); + if (flags & O_CREAT) + { + va_list ap; + va_start (ap, flags); + parameters[3] = convert_to_gdb_mode_t (va_arg (ap, mode_t)); + va_end (ap); + } + else + parameters[3] = 0; + BDM_TRAP (BDM_OPEN, (uint32_t)parameters); + errno = convert_from_gdb_errno (parameters[1]); + return parameters[0]; +} diff --git a/libgloss/m68k/bdm-read.c b/libgloss/m68k/bdm-read.c new file mode 100644 index 0000000..441a7d2 --- /dev/null +++ b/libgloss/m68k/bdm-read.c @@ -0,0 +1,42 @@ +/* + * bdm-read.c -- + * + * 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 "bdm-semihost.h" +#include "bdm-gdb.h" +#include <unistd.h> +#include <errno.h> + +/* + * read -- read from a file descriptor + * input parameters: + * 0 : file descriptor + * 1 : buf ptr + * 2 : count + * output parameters: + * 0 : result + * 1 : errno + */ + +ssize_t read (int fd, void *buf, size_t count) +{ + gdb_parambuf_t parameters; + parameters[0] = (uint32_t) fd; + parameters[1] = (uint32_t) buf; + parameters[2] = (uint32_t) count; + BDM_TRAP (BDM_READ, (uint32_t)parameters); + errno = convert_from_gdb_errno (parameters[1]); + return parameters[0]; +} diff --git a/libgloss/m68k/bdm-rename.c b/libgloss/m68k/bdm-rename.c new file mode 100644 index 0000000..3e0acf3 --- /dev/null +++ b/libgloss/m68k/bdm-rename.c @@ -0,0 +1,45 @@ +/* + * bdm-rename.c -- + * + * 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 "bdm-semihost.h" +#include "bdm-gdb.h" +#include <stdio.h> +#include <string.h> +#include <errno.h> + +/* + * rename -- rename a file + * input parameters: + * 0 : oldname ptr + * 1 : oldname length + * 2 : newname ptr + * 3 : newname length + * output parameters: + * 0 : result + * 1 : errno + */ + +int _rename (const char *oldpath, const char *newpath) +{ + gdb_parambuf_t parameters; + parameters[0] = (uint32_t) oldpath; + parameters[1] = (uint32_t) strlen (oldpath) + 1; + parameters[2] = (uint32_t) newpath; + parameters[3] = (uint32_t) strlen (newpath) + 1; + BDM_TRAP (BDM_RENAME, (uint32_t)parameters); + errno = convert_from_gdb_errno (parameters[1]); + return parameters[0]; +} diff --git a/libgloss/m68k/dbug-inbyte.S b/libgloss/m68k/bdm-semihost.c index 128c260..c0608e1 100644 --- a/libgloss/m68k/dbug-inbyte.S +++ b/libgloss/m68k/bdm-semihost.c @@ -1,7 +1,7 @@ /* - * dbug-inbyte.S -- + * bdm-semihost.c -- * - * Copyright (c) 1996 Cygnus Support + * 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 @@ -14,21 +14,12 @@ * they apply. */ -#include "asm.h" - - .text - .global SYM (inbyte) - .global SYM (getDebugChar) - -/* - * inbyte -- get a byte from the serial port - * d0 - contains the byte read in - */ - .text - .align 2 -SYM (getDebugChar): /* symbol name used by m68k-stub */ -SYM (inbyte): - movel IMM(0x10),d0 - trap IMM(15) - movel d1,d0 - rts +/* Semihosting trap. The debugger intercepts this and + performs the semihosting action. Then the program resumes as + usual. This function must be compiled without a frame pointer, so + we know the halt instruction is the very first instuction. */ + +void __attribute__ ((interrupt_handler)) __bdm_semihosting (void) +{ + __asm__ __volatile__ ("halt" ::: "memory"); +} diff --git a/libgloss/m68k/bdm-semihost.h b/libgloss/m68k/bdm-semihost.h new file mode 100644 index 0000000..4d6e2b9 --- /dev/null +++ b/libgloss/m68k/bdm-semihost.h @@ -0,0 +1,57 @@ +/* + * bdm semihosting support. + * + * 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. + */ + +/* Semihosting uses a user trap handler containing a HALT + instruction. This wakes the debugger to perform some action. */ + +/* This is the semihosting trap hander */ +#define BDM_TRAPNUM 15 + +/* This register holds the function enumeration for a semihosting + command. */ +#define BDM_FUNC_REG "d0" + +/* This register holds the argument for the semihosting call. For most + functions, this is a pointer to a block of memory that holds the input + and output parameters for the remote file i/o operation. */ +#define BDM_ARG_REG "d1" + +/* Codes for BDM_FUNC_REG. */ + +#define BDM_EXIT 0 +#define BDM_PUTCHAR 1 /* Obsolete */ +#define BDM_OPEN 2 +#define BDM_CLOSE 3 +#define BDM_READ 4 +#define BDM_WRITE 5 +#define BDM_LSEEK 6 +#define BDM_RENAME 7 +#define BDM_UNLINK 8 +#define BDM_STAT 9 +#define BDM_FSTAT 10 +#define BDM_GETTIMEOFDAY 11 +#define BDM_ISATTY 12 +#define BDM_SYSTEM 13 + +/* Here is the macro that generates the trap. */ + +#define BDM_TRAP(func, arg) \ + __asm__ __volatile__ ("move.l %0,%/" BDM_ARG_REG "\n" \ + "moveq %1,%/" BDM_FUNC_REG "\n" \ + "trap %2" \ + :: "rmi" (arg), "n" (func), "n" (BDM_TRAPNUM) \ + : BDM_FUNC_REG,BDM_ARG_REG,"memory") + diff --git a/libgloss/m68k/bdm-stat.c b/libgloss/m68k/bdm-stat.c new file mode 100644 index 0000000..536aeec --- /dev/null +++ b/libgloss/m68k/bdm-stat.c @@ -0,0 +1,48 @@ +/* + * bdm-stat.c -- + * + * 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 "bdm-semihost.h" +#include "bdm-gdb.h" +#include <string.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +#include <errno.h> + +/* + * stat -- get file information + * input parameters: + * 0 : filename ptr + * 1 : filename length + * 2 : stat buf ptr + * output parameters: + * 0 : result + * 1 : errno + */ + + +int stat (const char *filename, struct stat *buf) +{ + gdb_parambuf_t parameters; + struct gdb_stat gbuf; + parameters[0] = (uint32_t) filename; + parameters[1] = (uint32_t) strlen (filename) + 1; + parameters[2] = (uint32_t) &gbuf; + BDM_TRAP (BDM_STAT, (uint32_t)parameters); + convert_from_gdb_stat (&gbuf, buf); + errno = convert_from_gdb_errno (parameters[1]); + return parameters[0]; +} diff --git a/libgloss/m68k/bdm-system.c b/libgloss/m68k/bdm-system.c new file mode 100644 index 0000000..75a82e2 --- /dev/null +++ b/libgloss/m68k/bdm-system.c @@ -0,0 +1,55 @@ +/* + * bdm-system.c -- + * + * 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 "bdm-semihost.h" +#include "bdm-gdb.h" +#include <stdlib.h> +#include <string.h> +#include <errno.h> +#include <sys/wait.h> +/* + * system: execute command on (remote) host + * input parameters: + * 0 : command ptr + * 1 : command length + * output parameters: + * 0 : result + * 1 : errno + */ + +int _system (const char *command) +{ + int e; + gdb_parambuf_t parameters; + + parameters[0] = (uint32_t) command; + parameters[1] = command ? (uint32_t) strlen (command) + 1 : 0; + BDM_TRAP (BDM_SYSTEM, (uint32_t)parameters); + errno = convert_from_gdb_errno (parameters[1]); + e = parameters[0]; + if (e >= 0 && command) + { + /* We have to convert e, an exit status to the encoded status of + the command. To avoid hard coding the exit status, we simply + loop until we find the right position. */ + int exit_code; + + for (exit_code = e; e && WEXITSTATUS (e) != exit_code; e <<= 1) + continue; + } + + return e; +} diff --git a/libgloss/m68k/bdm-time.c b/libgloss/m68k/bdm-time.c new file mode 100644 index 0000000..02fbfab --- /dev/null +++ b/libgloss/m68k/bdm-time.c @@ -0,0 +1,21 @@ +#include <sys/time.h> + +/* + * time -- get the current time + * input parameters: + * 0 : timeval ptr + * output parameters: + * 0 : result + * 1 : errno + */ + +time_t time (time_t *t) +{ + struct timeval tv; + + if (gettimeofday (&tv, NULL)) + return -1; + if (t) + *t = tv.tv_sec; + return tv.tv_sec; +} diff --git a/libgloss/m68k/bdm-unlink.c b/libgloss/m68k/bdm-unlink.c new file mode 100644 index 0000000..05098ae --- /dev/null +++ b/libgloss/m68k/bdm-unlink.c @@ -0,0 +1,41 @@ +/* + * bdm-unlink.c -- + * + * 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 "bdm-semihost.h" +#include "bdm-gdb.h" +#include <stdio.h> +#include <string.h> +#include <errno.h> + +/* + * unlink -- unlink (delete) a file + * input parameters: + * 0 : filename ptr + * 1 : filename length + * output parameters: + * 0 : result + * 1 : errno + */ + +int unlink (const char *path) +{ + gdb_parambuf_t parameters; + parameters[0] = (uint32_t) path; + parameters[1] = (uint32_t) strlen (path) + 1; + BDM_TRAP (BDM_UNLINK, (uint32_t)parameters); + errno = convert_from_gdb_errno (parameters[1]); + return parameters[0]; +} diff --git a/libgloss/m68k/bdm-write.c b/libgloss/m68k/bdm-write.c new file mode 100644 index 0000000..0280dcd --- /dev/null +++ b/libgloss/m68k/bdm-write.c @@ -0,0 +1,42 @@ +/* + * bdm-write.c -- + * + * 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 "bdm-semihost.h" +#include "bdm-gdb.h" +#include <unistd.h> +#include <errno.h> + +/* + * write -- write to a file descriptor + * input parameters: + * 0 : file descriptor + * 1 : buf ptr + * 2 : count + * output parameters: + * 0 : result + * 1 : errno + */ + +ssize_t write (int fd, const void *buf, size_t count) +{ + gdb_parambuf_t parameters; + parameters[0] = (uint32_t) fd; + parameters[1] = (uint32_t) buf; + parameters[2] = (uint32_t) count; + BDM_TRAP (BDM_WRITE, (uint32_t)parameters); + errno = convert_from_gdb_errno (parameters[1]); + return parameters[0]; +} diff --git a/libgloss/m68k/dbug-cf.sc b/libgloss/m68k/cf.sc index 0342ed1..b19dce4 100644 --- a/libgloss/m68k/dbug-cf.sc +++ b/libgloss/m68k/cf.sc @@ -1,46 +1,34 @@ # a linker script template. -# RAMSTART - start of board's ram -# RAMSIZE - size of board's ram -# RAMDBUG - bytes at start of RAM for DBUG use +# RAM - start of board's ram +# RAM_SIZE - size of board's ram +# ROM - start of board's rom +# ROM_SIZE - size of board's rom + +test -z "${ROM:+1}" && NOROM=1 cat <<EOF -STARTUP(crt0.o) +STARTUP(bdm-crt0.o) OUTPUT_ARCH(m68k) -/* DBUG loads SREC files */ -/*OUTPUT_FORMAT(srec)*/ -ENTRY(start) +ENTRY(__start) SEARCH_DIR(.) -GROUP(-ldbug -lc -lgcc -ldbug) +GROUP(-lc -lbdm) __DYNAMIC = 0; MEMORY { - ram (rwx) : ORIGIN = ${RAMSTART} + ${RAMDBUG:-0}, - LENGTH = ${RAMSIZE} - ${RAMDBUG:-0} + ${ROM:+rom (rx) : ORIGIN = ${ROM}, LENGTH = ${ROM_SIZE}} + ram (rwx) : ORIGIN = ${RAM}, LENGTH = ${RAM_SIZE} } -PROVIDE (__stack = ${RAMSTART} + ${RAMSIZE}); - -/* - * Initalize some symbols to be zero so we can reference them in the - * crt0 without core dumping. These functions are all optional, but - * we do this so we can have our crt0 always use them if they exist. - * This is so BSPs work better when using the crt0 installed gcc. - * We have to initalize them twice, so we cover a.out (which prepends - * an underscore) and coff object file formats. - */ -PROVIDE (hardware_init_hook = 0); -PROVIDE (_hardware_init_hook = 0); -PROVIDE (software_init_hook = 0); -PROVIDE (_software_init_hook = 0); -/* - * stick everything in ram (of course) - */ +/* Place the stack at the end of memory, unless specified otherwise. */ +PROVIDE (__stack = ${RAM} + ${RAM_SIZE}); + SECTIONS { .text : { CREATE_OBJECT_SYMBOLS + bdm-crt0.o(.text) *(.text .text.*) . = ALIGN(0x4); @@ -48,11 +36,11 @@ SECTIONS KEEP (*crtbegin.o(.ctors)) KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors)) KEEP (*(SORT(.ctors.*))) - KEEP (*(.ctors)) + KEEP (*crtend.o(.ctors)) KEEP (*crtbegin.o(.dtors)) KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors)) KEEP (*(SORT(.dtors.*))) - KEEP (*(.dtors)) + KEEP (*crtend.o(.dtors)) *(.rodata .rodata.*) @@ -76,28 +64,33 @@ SECTIONS SHORT (0x4e5e) /* unlk %fp */ SHORT (0x4e75) /* rts */ - _etext = .; *(.lit) - } > ram + + . = ALIGN(4); + _etext = .; + } >${ROM:+rom}${NOROM:+ram} .data : { + __data_load = LOADADDR (.data); + __data_start = .; *(.got.plt) *(.got) *(.shdata) *(.data .data.*) + . = ALIGN (4); _edata = .; - } > ram + } >ram ${ROM:+AT>rom} .bss : { - . = ALIGN(0x4); __bss_start = . ; *(.shbss) *(.bss .bss.*) *(COMMON) - _end = ALIGN (0x8); + . = ALIGN (8); + _end = .; __end = _end; - } > ram + } >ram ${ROM:+AT>rom} .stab 0 (NOLOAD) : { diff --git a/libgloss/m68k/crt0.S b/libgloss/m68k/crt0.S index 1aa0dd6..4c91628 100644 --- a/libgloss/m68k/crt0.S +++ b/libgloss/m68k/crt0.S @@ -52,11 +52,17 @@ SYM (environ): .extern _end /* - * set things up so the application will run. This *must* be called start. + * Set things up so the application will run. For historical reasons + * this is called 'start'. We set things up to provide '_start' + * as with other systems, but also provide a weak alias called + * 'start' for compatibility with existing linker scripts. */ .global SYM (start) + .weak SYM (start) + .set SYM (start),SYM(_start) -SYM (start): + .global SYM (_start) +SYM (_start): /* * put any hardware init code here */ |