diff options
Diffstat (limited to '')
| -rw-r--r-- | c/src/lib/libbsp/hppa1.1/simhppa/start/start.s | 169 | ||||
| -rw-r--r-- | c/src/lib/libbsp/hppa1.1/simhppa/startup/Makefile.in | 61 | ||||
| -rw-r--r-- | c/src/lib/libbsp/hppa1.1/simhppa/startup/bspstart.c | 2 |
3 files changed, 231 insertions, 1 deletions
diff --git a/c/src/lib/libbsp/hppa1.1/simhppa/start/start.s b/c/src/lib/libbsp/hppa1.1/simhppa/start/start.s new file mode 100644 index 0000000000..92fda897d9 --- /dev/null +++ b/c/src/lib/libbsp/hppa1.1/simhppa/start/start.s @@ -0,0 +1,169 @@ +/* + * crt0.S -- startup file for hppa on RTEMS + * + * $Id$ + */ + + .COPYRIGHT "crt0.S for hppa" + + .DATA + +_progname .STRINGZ "simhppa" +_crt0_argv .WORD _progname, 0 + +/* + * Set up the standard spaces (sections) These definitions come + * from /lib/pcc_prefix.s. + */ + .TEXT + +/* + * stuff we need that is defined elsewhere. + */ + .IMPORT main, CODE + .IMPORT _bss_start, DATA + .IMPORT _bss_end, DATA + .IMPORT environ, DATA + +/* + * start -- set things up so the application will run. + * + */ + .PROC + .CALLINFO SAVE_SP, FRAME=48 + .EXPORT $START$,ENTRY + .EXPORT start,ENTRY +$START$ +start: + +/* + * Get a stack + */ + + ldil L%crt_stack+48,%r30 + ldo R%crt_stack+48(%r30),%r30 + +/* + * we need to set %r27 (global data pointer) here + */ + + ldil L%$global$,%r27 + ldo R%$global$(%r27),%r27 + +/* + * zerobss -- zero out the bss section + * XXX We don't do this since simulator and boot rom will do this for us. + */ +#if 0 + ; load the start of bss + ldil L%_bss_start,%r4 + ldo R%_bss_start(%r4),%r4 + + ; load the end of bss + ldil L%_bss_end,%r5 + ldo R%_bss_end(%r5),%r5 + + +bssloop + addi -1,%r5,%r5 ; decrement _bss_end + stb %r0,0(0,%r5) ; we do this by bytes for now even + ; though it is slower, it is safer + combf,= %r4,%r5, bssloop + nop +#endif + + ldi 1,%ret0 + +/* + * Call the "main" routine from the application to get it going. + * We call it as main(1, argv, 0) + */ + + copy %r0, %r24 + + ldil L%_crt0_argv,%r25 + ldo R%_crt0_argv(%r25),%r25 + + bl main,%r2 + ldo 1(%r0), %r26 + + .PROCEND +/* + * _exit -- Exit from the application. Normally we cause a user trap + * to return to the ROM monitor for another run, but with + * this monitor we can not. Still, "C" wants this symbol, it + * should be here. Jumping to 0xF0000004 jumps back into the + * firmware, while writing a 5 to 0xFFFE0030 causes a reset. + */ +_exit_fallthru + .PROC + .CALLINFO + .ENTRY + + ;; This just causes a breakpoint exception + break 0x0,0x0 + bv,n (%rp) + nop + .EXIT + .PROCEND + +/* + * _sr4export -- support for called functions. (mostly for GDB) + */ + .EXPORT _sr4export, ENTRY +_sr4export: + .PROC + .CALLINFO + .ENTRY + + ble 0(%sr4,%r22) + copy %r31,%rp + ldw -18(%sr0,%sp),%rp + ldsid (%sr0,%rp),%r1 + mtsp %r1,%sr0 + be,n 0(%sr0,%rp) + nop + .EXIT + .PROCEND + + + .subspa $UNWIND_START$,QUAD=0,ALIGN=8,ACCESS=0x2c,SORT=56 + .export $UNWIND_START +$UNWIND_START + .subspa $UNWIND$,QUAD=0,ALIGN=8,ACCESS=0x2c,SORT=64 + .subspa $UNWIND_END$,QUAD=0,ALIGN=8,ACCESS=0x2c,SORT=72 + .export $UNWIND_END +$UNWIND_END + .subspa $RECOVER_START$,QUAD=0,ALIGN=4,ACCESS=0x2c,SORT=73 + .export $RECOVER_START +$RECOVER_START + .subspa $RECOVER$,QUAD=0,ALIGN=4,ACCESS=0x2c,SORT=80 + .subspa $RECOVER_END$,QUAD=0,ALIGN=4,ACCESS=0x2c,SORT=88 + .export $RECOVER_END +$RECOVER_END + +/* + * Here we set up the standard date sub spaces. + * + * Set up some room for a stack. We just grab a chunk of memory. + * We also setup some space for the global variable space, which + * must be done using the reserved name "$global$" so "C" code + * can find it. The stack grows towards the higher addresses. + */ + + .subspa $DATA$,QUAD=1,ALIGN=8,ACCESS=0x1f,SORT=16 + .subspa $SHORTDATA$,QUAD=1,ALIGN=8,ACCESS=0x1f,SORT=24 + .subspa $GLOBAL$,QUAD=1,ALIGN=8,ACCESS=0x1f,SORT=40 + .export $global$ +$global$ + .subspa $SHORTBSS$,QUAD=1,ALIGN=8,ACCESS=0x1f,SORT=80,ZERO + .subspa $BSS$,QUAD=1,ALIGN=8,ACCESS=0x1f,SORT=82,ZERO + + .subspa $STACK$,QUAD=1,ALIGN=8,ACCESS=0x1f,SORT=88,ZERO + + .export crt_stack +crt_stack + .comm 0x1000 + + .end + diff --git a/c/src/lib/libbsp/hppa1.1/simhppa/startup/Makefile.in b/c/src/lib/libbsp/hppa1.1/simhppa/startup/Makefile.in new file mode 100644 index 0000000000..9474f53521 --- /dev/null +++ b/c/src/lib/libbsp/hppa1.1/simhppa/startup/Makefile.in @@ -0,0 +1,61 @@ +# +# $Id$ +# + +@SET_MAKE@ +srcdir = @srcdir@ +top_srcdir = @top_srcdir@ +VPATH=@srcdir@ + +PGM=${ARCH}/startup.rel + +# C source names, if any, go here -- minus the .c +C_PIECES=bspclean bspstart sbrk setvec +C_FILES=$(C_PIECES:%=%.c) +C_O_FILES=$(C_PIECES:%=${ARCH}/%.o) + +CC_PIECES=rtems-ctor +CC_FILES=$(CC_PIECES:%=%.cc) +CC_O_FILES=$(CC_PIECES:%=${ARCH}/%.o) + +H_FILES= + +SRCS=$(C_FILES) $(H_FILES) +OBJS=$(C_O_FILES) + +# We install the RTEMS constructor as a separate .o +# so it can be easily place correctly by the compiler config file. +INSTALLED_O_FILES=$(ARCH)/rtems-ctor.o + +include $(RTEMS_CUSTOM) +include $(PROJECT_ROOT)/make/leaf.cfg + +# +# (OPTIONAL) Add local stuff here using += +# + +DEFINES += +CPPFLAGS += +CFLAGS += + +LD_PATHS += +LD_LIBS += +LDFLAGS += + +# +# Add your list of files to delete here. The config files +# already know how to delete some stuff, so you may want +# to just run 'make clean' first to see what gets missed. +# 'make clobber' already includes 'make clean' +# + +CLEAN_ADDITIONS += +CLOBBER_ADDITIONS += + +${PGM}: ${SRCS} ${OBJS} + $(make-rel) + +all: ${ARCH} $(SRCS) $(INSTALLED_O_FILES) $(PGM) + $(INSTALL_VARIANT) $(INSTALLED_O_FILES) ${PROJECT_RELEASE}/lib + +# the .rel file built here will be put into libbsp.a by ../wrapup/Makefile diff --git a/c/src/lib/libbsp/hppa1.1/simhppa/startup/bspstart.c b/c/src/lib/libbsp/hppa1.1/simhppa/startup/bspstart.c index ec49abe2bf..78b028dde3 100644 --- a/c/src/lib/libbsp/hppa1.1/simhppa/startup/bspstart.c +++ b/c/src/lib/libbsp/hppa1.1/simhppa/startup/bspstart.c @@ -348,7 +348,7 @@ bsp_start(void) Cpu_table.itimer_clicks_per_microsecond = 1; -#ifdef 0 +#if 0 /* * Commented by DIVISION INC. External interrupt * processing is now divorced from RTEMS for HPPA. |