* microblaze/_exception_handler.S: Adjust to be weak.
* microblaze/Makefile.in: Add LINUX_BSP. * microblaze/elf-gloss-linux.ld: New file. * microblaze/elf-gloss-linux.specs: Likewise. * microblaze/linux-crt0.S: Likewise. * microblaze/linux-inbyte.c: Likewise. * microblaze/linux-outbyte.c: Likewise. * microblaze/linux-syscalls-wrap.c: Likewise. * microblaze/linux-syscalls.S: Likewise. * microblaze/linux-syscalls.h: Likewise.
This commit is contained in:
Corinna Vinschen
parent
b143d094ee
commit
2635a8d6df
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@ -1,3 +1,19 @@
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2013-07-23 Nagaraju Mekala <nagaraju.mekala@xilinx.com>
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* microblaze/_exception_handler.S: Adjust to be weak.
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2013-07-23 Edgar E. Iglesias <edgar.iglesias@xilinx.com>
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* microblaze/Makefile.in: Add LINUX_BSP.
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* microblaze/elf-gloss-linux.ld: New file.
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* microblaze/elf-gloss-linux.specs: Likewise.
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* microblaze/linux-crt0.S: Likewise.
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* microblaze/linux-inbyte.c: Likewise.
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* microblaze/linux-outbyte.c: Likewise.
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* microblaze/linux-syscalls-wrap.c: Likewise.
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* microblaze/linux-syscalls.S: Likewise.
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* microblaze/linux-syscalls.h: Likewise.
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2013-07-17 Yaakov Selkowitz <yselkowitz@users.sourceforge.net>
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* lm32/configure: Regenerate.
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@ -84,25 +84,37 @@ OBJS = ${GENOBJS} sbrk.o timer.o _exception_handler.o _hw_exception_handler.o \
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xil_malloc.o xil_sbrk.o xil_printf.o
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SCRIPTS = xilinx.ld
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# Tiny Linux BSP.
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LINUX_BSP = libgloss-linux.a
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CRT += linux-crt0.o
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LINUX_OBJS = linux-syscalls.o linux-syscalls-wrap.o
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LINUX_OBJS += linux-outbyte.o linux-inbyte.o
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LINUX_SCRIPTS = elf-gloss-linux.specs
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CPU = @CPU@
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#### Host specific Makefile fragment comes in here.
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@host_makefile_frag@
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all: ${CRT} ${LIB}
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all: ${CRT} ${LIB} ${LINUX_BSP}
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install: ${CRT} ${LIB}
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install: ${CRT} ${LIB} install-linux
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@for crt in ${CRT}; do \
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$(INSTALL_PROGRAM) $${crt} $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}/$${crt}; \
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done
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$(INSTALL_PROGRAM) ${LIB} $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}
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$(INSTALL_PROGRAM) $(srcdir)/${SCRIPTS} $(DESTDIR)$(tooldir)/lib/
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install-linux: ${LINUX_BSP}
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$(INSTALL_PROGRAM) ${LINUX_BSP} $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}
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set -e; for x in ${LINUX_SCRIPTS}; do ${INSTALL_DATA} ${srcdir}/${objtype}$$x $(DESTDIR)${tooldir}/lib${MULTISUBDIR}/$$x; done
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crt0.o: crt0.S
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crt1.o: crt1.S
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crt2.o: crt2.S
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crt3.o: crt3.S
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crt4.o: crt4.S
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linux-crt0.o: linux-crt0.S
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crtinit.o: crtinit.S
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sim-crtinit.o: sim-crtinit.S
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sim-pgcrtinit.o: sim-pgcrtinit.S
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@ -120,6 +132,10 @@ ${LIB}: ${OBJS}
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${AR} ${ARFLAGS} $@ ${OBJS}
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${RANLIB} $@
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${LINUX_BSP}: ${LINUX_OBJS}
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${AR} ${ARFLAGS} $@ ${LINUX_OBJS}
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${RANLIB} $@
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.PHONY: info dvi doc install-info clean-info
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info doc dvi:
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install-info:
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@ -30,9 +30,11 @@
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*/
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.text
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.globl _exception_handler # Exception Handler Label
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.align 2
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.weakext _exception_handler
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.ent _exception_handler
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.type _exception_handler, @function
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_exception_handler:
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rtsd r17, 0
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nop
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addi r11,r11,8
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bra r11
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@ -0,0 +1,159 @@
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/* Default linker script, for normal executables */
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/*OUTPUT_FORMAT("elf32-microblaze", "", "") */
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/*SEARCH_DIR("/proj/fv1/gnu_builds/head/mb/release/lin/mb/microblaze-xilinx-elf/lib");*/
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/*SEARCH_DIR("/proj/fv1/gnu_builds/head/mb/release/lin/mb/microblaze-xilinx-elf/lib");*/
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OUTPUT_ARCH(microblaze)
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ENTRY(_start)
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_TEXT_START_ADDR = DEFINED(_TEXT_START_ADDR) ? _TEXT_START_ADDR : 0x50;
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PHDRS
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{
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text PT_LOAD FILEHDR PHDRS;
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data PT_LOAD;
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bss PT_LOAD;
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}
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SECTIONS
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{
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. = SIZEOF_HEADERS;
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_ftext = .;
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.text : {
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*(.text)
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*(.text.*)
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*(.gnu.linkonce.t.*)
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} : text
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_etext = .;
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.init : { KEEP (*(.init)) } =0
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.fini : { KEEP (*(.fini)) } =0
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PROVIDE (__CTOR_LIST__ = .);
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PROVIDE (___CTOR_LIST__ = .);
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.ctors :
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{
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/* gcc uses crtbegin.o to find the start of
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the constructors, so we make sure it is
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first. Because this is a wildcard, it
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doesn't matter if the user does not
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actually link against crtbegin.o; the
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linker won't look for a file to match a
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wildcard. The wildcard also means that it
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doesn't matter which directory crtbegin.o
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is in. */
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KEEP (*crtbegin.o(.ctors))
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/* We don't want to include the .ctor section from
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from the crtend.o file until after the sorted ctors.
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The .ctor section from the crtend file contains the
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end of ctors marker and it must be last */
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KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
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KEEP (*(SORT(.ctors.*)))
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KEEP (*(.ctors))
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} : text
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PROVIDE (__CTOR_END__ = .);
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PROVIDE (___CTOR_END__ = .);
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PROVIDE (__DTOR_LIST__ = .);
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PROVIDE (___DTOR_LIST__ = .);
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.dtors :
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{
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KEEP (*crtbegin.o(.dtors))
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KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
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KEEP (*(SORT(.dtors.*)))
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KEEP (*(.dtors))
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} : text
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PROVIDE (__DTOR_END__ = .);
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PROVIDE (___DTOR_END__ = .);
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. = ALIGN(4);
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_frodata = . ;
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.rodata : {
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*(.rodata)
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*(.rodata.*)
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*(.gnu.linkonce.r.*)
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CONSTRUCTORS; /* Is this needed? */
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} : text
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_erodata = .;
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/* New page. */
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. += 0x1000;
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/* Alignments by 8 to ensure that _SDA2_BASE_ on a word boundary */
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/* Note that .sdata2 and .sbss2 must be contiguous */
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. = ALIGN(8);
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_ssrw = .;
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.sdata2 : {
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*(.sdata2)
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*(.sdata2.*)
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*(.gnu.linkonce.s2.*)
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} : data
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. = ALIGN(4);
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.sbss2 : {
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PROVIDE (__sbss2_start = .);
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*(.sbss2)
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*(.sbss2.*)
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*(.gnu.linkonce.sb2.*)
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PROVIDE (__sbss2_end = .);
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} : data
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. = ALIGN(8);
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_essrw = .;
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_ssrw_size = _essrw - _ssrw;
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PROVIDE (_SDA2_BASE_ = _ssrw + (_ssrw_size / 2 ));
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. = ALIGN(4);
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_fdata = .;
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.data : {
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*(.data)
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*(.gnu.linkonce.d.*)
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CONSTRUCTORS; /* Is this needed? */
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PROVIDE (__bss_start = .);
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} : data
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_edata = . ;
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/* Added to handle pic code */
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.got : {
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*(.got)
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}
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.got1 : {
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*(.got1)
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}
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.got2 : {
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*(.got2)
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}
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/* Added by Sathya to handle C++ exceptions */
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.eh_frame : {
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*(.eh_frame)
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}
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.jcr : {
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*(.jcr)
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. = ALIGN(4096);
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}
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.gcc_except_table : {
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*(.gcc_except_table)
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}
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. = ALIGN(4096);
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/* Alignments by 8 to ensure that _SDA_BASE_ on a word boundary */
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/* Note that .sdata and .sbss must be contiguous */
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. = ALIGN(8);
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_ssro = .;
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.sdata : {
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*(.sdata)
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*(.sdata.*)
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*(.gnu.linkonce.s.*)
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}
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. = ALIGN(4);
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.sbss : {
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PROVIDE (__sbss_start = .);
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*(.sbss)
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*(.sbss.*)
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*(.gnu.linkonce.sb.*)
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PROVIDE (__sbss_end = .);
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}
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. = ALIGN(8);
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_essro = .;
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_ssro_size = _essro - _ssro;
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PROVIDE (_SDA_BASE_ = _ssro + (_ssro_size / 2 ));
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. = ALIGN(4);
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_fbss = .;
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.bss : {
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PROVIDE (__bss_start = .);
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*(.bss)
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*(.bss.*)
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*(.gnu.linkonce.b.*)
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*(COMMON)
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. = ALIGN(4);
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PROVIDE (__bss_end = .);
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. = ALIGN(4096);
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} : bss
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}
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@ -0,0 +1,14 @@
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%rename link old_link
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%rename lib libc
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*link:
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%(old_link) -defsym _TEXT_START_ADDR=0x10000 -z max-page-size=4096 -z common-page-size=4096 --no-omagic
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*libgloss:
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-lgloss-linux
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*lib:
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-start-group -lgloss-linux -lxil-linux -lc -lm -end-group
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*startfile:
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linux-crt0%O%s crtbegin%O%s
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@ -0,0 +1,58 @@
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/* linux-crt0 -- Startup routines for the Linux BSP.
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*
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* Copyright (c) 2011 Edgar E. Iglesias
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*
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* The authors hereby grant permission to use, copy, modify, distribute,
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* and license this software and its documentation for any purpose, provided
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* that existing copyright notices are retained in all copies and that this
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* notice is included verbatim in any distributions. No written agreement,
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* license, or royalty fee is required for any of the authorized uses.
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* Modifications to this software may be copyrighted by their authors
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* and need not follow the licensing terms described here, provided that
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* the new terms are clearly indicated on the first page of each file where
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* they apply.
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*/
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.section .text
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.globl _start
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.ent _start
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.type _start, @function
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_start:
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la r13, r0, _SDA_BASE_
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la r2, r0, _SDA2_BASE_
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brlid r15, __init
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nop
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lwi r5, r1, 0
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addik r6, r1, 4
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# Add argc * 4.
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addk r7, r5, r5
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addk r7, r7, r7
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brlid r15, main
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# Now add 4 + r1 (i.e r6) in the delayslot.
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addk r7, r7, r6
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brlid r15, exit
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addik r5, r3, 0
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.size _start, . - _start
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.end _start
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/* Replacement for the GCC provided crti.S. This one avoids the
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setup of stack protection regs (which result in privilieged
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insn exceptions when running in user-space). */
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.section .init, "ax"
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.global __init
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.align 2
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__init:
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addik r1, r1, -8
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sw r15, r0, r1
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.section .fini, "ax"
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.global __fini
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.align 2
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__fini:
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addik r1, r1, -8
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sw r15, r0, r1
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@ -0,0 +1,6 @@
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int inbyte(void)
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{
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char ch = 0;
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read(0, &ch, 1);
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return ch;
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}
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@ -0,0 +1,4 @@
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void outbyte (unsigned char c)
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{
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_write(1, &c, 1);
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}
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@ -0,0 +1,7 @@
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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int isatty (int fd) {
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return 1;
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}
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@ -0,0 +1,45 @@
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/* linux-syscalls - Syscall interface to microblaze linux
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*
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* Copyright (c) 2011 Edgar E. Iglesias
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*
|
||||
* 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.
|
||||
*/
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||||
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||||
#include "linux-syscalls.h"
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||||
#define FUNC(name) .type name, %function; name:
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||||
#define GLOBAL(name) .global name; FUNC(name)
|
||||
#define SIZE(name) .size name, .-name
|
||||
|
||||
# define SYSCALL_BODY(name) \
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||||
addik r12, r0, SYS_ ## name; \
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brki r14, 8; \
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||||
rtsd r15, 8; \
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||||
nop;
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||||
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||||
# define SYSCALL(name) \
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||||
GLOBAL(_ ## name); \
|
||||
SYSCALL_BODY(name); \
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||||
SIZE(_ ## name)
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||||
|
||||
SYSCALL(brk)
|
||||
SYSCALL(exit)
|
||||
SYSCALL(read)
|
||||
SYSCALL(write)
|
||||
SYSCALL(open)
|
||||
SYSCALL(close)
|
||||
SYSCALL(lseek)
|
||||
SYSCALL(fstat)
|
||||
SYSCALL(unlink)
|
||||
SYSCALL(getpid)
|
||||
SYSCALL(kill)
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||||
SYSCALL(rt_sigaction)
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||||
|
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@ -0,0 +1,28 @@
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|||
/** Linux system call interface for the MicroBlaze processor.
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||||
* Copyright (c) 2009 Edgar E. Iglesias.
|
||||
*
|
||||
* Permission to use, copy, modify, and distribute this software
|
||||
* is freely granted, provided that this notice is preserved.
|
||||
*/
|
||||
|
||||
#define SYS_exit 1
|
||||
#define SYS_fork 2
|
||||
#define SYS_read 3
|
||||
#define SYS_write 4
|
||||
#define SYS_open 5
|
||||
#define SYS_close 6
|
||||
#define SYS_waitpid 7
|
||||
#define SYS_creat 8
|
||||
#define SYS_link 9
|
||||
#define SYS_unlink 10
|
||||
#define SYS_execve 11
|
||||
#define SYS_chdir 12
|
||||
#define SYS_time 13
|
||||
|
||||
#define SYS_lseek 19
|
||||
#define SYS_getpid 20
|
||||
#define SYS_kill 37
|
||||
#define SYS_brk 45
|
||||
#define SYS_fstat 108
|
||||
|
||||
#define SYS_rt_sigaction 174
|
||||
Loading…
Reference in New Issue