diff options
author | Nathan Sidwell <nathan@codesourcery.com> | 2006-08-25 15:55:48 +0400 |
---|---|---|
committer | Nathan Sidwell <nathan@codesourcery.com> | 2006-08-25 15:55:48 +0400 |
commit | ffe60f8edaf49afb96f6e9182fea1fbb67b8f3f2 (patch) | |
tree | f41da68d8b0b327ea909bed24d5a9c84b83ed233 /libgloss | |
parent | fe28d47d3bc662651cb01c06e5078caf59442e19 (diff) |
libgloss/
* 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.
Diffstat (limited to 'libgloss')
-rw-r--r-- | libgloss/m68k/Makefile.in | 105 | ||||
-rw-r--r-- | libgloss/m68k/bdm-crt0.S | 85 | ||||
-rw-r--r-- | libgloss/m68k/bdm-crt1.c | 63 | ||||
-rw-r--r-- | libgloss/m68k/bdm-exit.c | 3 | ||||
-rw-r--r-- | libgloss/m68k/bdm-isv.c | 148 | ||||
-rw-r--r-- | libgloss/m68k/cf.sc | 61 | ||||
-rw-r--r-- | libgloss/m68k/dbug-exit.S | 29 | ||||
-rw-r--r-- | libgloss/m68k/dbug-inbyte.S | 34 | ||||
-rw-r--r-- | libgloss/m68k/dbug-outbyte.S | 34 |
9 files changed, 211 insertions, 351 deletions
diff --git a/libgloss/m68k/Makefile.in b/libgloss/m68k/Makefile.in index a5e561164..6e3d9a955 100644 --- a/libgloss/m68k/Makefile.in +++ b/libgloss/m68k/Makefile.in @@ -118,18 +118,13 @@ IDPGDB_BSP= libidpgdb.a IDPGDB_OBJS= leds.o idp-inbyte.o idp-gdb-outbyte.o mc68ec.o # -# here's all the DBUG target stuff -# -DBUG_BSP= libdbug.a -DBUG_OBJS= dbug-exit.o dbug-inbyte.o dbug-outbyte.o - -# # here's all the BDM semihosting stuff # +BDM_CRT0= bdm-crt0.o BDM_BSP= libbdm.a -BDM_OBJS= bdm-isv.o bdm-semihost.o $(BDM_SYSOBJS) \ +BDM_OBJS= bdm-crt1.o bdm-semihost.o $(BDM_SYSOBJS) \ $(patsubst %,bdm-%.o,${BDM_ISRS}) -BDM_OTHER_OBJS= getpid.o kill.o sbrk.o print.o putnum.o +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 \ @@ -144,14 +139,11 @@ BDM_ISRS= other_interrupt reset access_error address_error \ fp_underflow fp_operand_error fp_overflow fp_input_not_a_number \ fp_input_denormalized_number unsupported_instruction -CF_SCRIPTS= m5208evb-dbug.ld m5208evb-bdm.ld \ - m5213evb-dbug.ld m5213evb-bdm.ld \ - m52235evb-dbug.ld m52235evb-bdm.ld \ - m5235evb-dbug.ld m5235evb-bdm.ld \ - m5272c3-dbug.ld m5272c3-bdm.ld \ - m5282evb-dbug.ld m5282evb-bdm.ld \ - m5329evb-dbug.ld m5329evb-bdm.ld \ - m5485evb-dbug.ld m5485evb-bdm.ld +CF_BOARDS := m5208evb m5213evb m52235evb m5235evb m5272c3 m5282evb \ + m5329evb m5485evb +CF_BDM_SCRIPTS := $(patsubst %,%-bdm.ld,$(CF_BOARDS)) +CF_ROM_SCRIPTS := $(patsubst %,%-rom.ld,$(CF_BOARDS)) +CF_SCRIPTS= $(CF_BDM_SCRIPTS) $(CF_ROM_SCRIPTS) # Host specific makefile fragment comes in here. @host_makefile_frag@ @@ -160,7 +152,8 @@ CF_SCRIPTS= m5208evb-dbug.ld m5208evb-bdm.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} ${BDM_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 @@ -181,10 +174,6 @@ ${IDPGDB_BSP}: $(OBJS) ${IDPGDB_OBJS} ${AR} ${ARFLAGS} $@ $(OBJS) ${IDPGDB_OBJS} ${RANLIB} $@ -${DBUG_BSP}: $(OBJS) ${DBUG_OBJS} - ${AR} ${ARFLAGS} $@ $(OBJS) ${DBUG_OBJS} - ${RANLIB} $@ - ${BDM_BSP}: $(BDM_OTHER_OBJS) ${BDM_OBJS} ${AR} ${ARFLAGS} $@ $(BDM_OTHER_OBJS) ${BDM_OBJS} ${RANLIB} $@ @@ -197,64 +186,37 @@ ${MVME162_BSP}: $(OBJS) ${MVME162_OBJS} ${AR} ${ARFLAGS} $@ $(OBJS) ${MVME162_OBJS} ${RANLIB} $@ - $(BDM_SYSOBJS): %.o: %.c bdm-semihost.h bdm-gdb.h $(CC) $(CFLAGS_FOR_TARGET) $(INCLUDES) -c $< -o $@ -bdm-isv.o : bdm-isv.c bdm-semihost.h +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 -m5208evb-dbug.ld: cf.sc Makefile - IO=dbug RAMSTART=1024M RAMSIZE=16M RAMDBUG=128K ${SHELL} $< > $@ - -m5208evb-bdm.ld: cf.sc Makefile - IO=bdm ISV=1 RAMSTART=1024M RAMSIZE=16M ${SHELL} $< > $@ - -m5213evb-dbug.ld: cf.sc Makefile - IO=dbug RAMSTART=512M RAMSIZE=32K RAMDBUG=8K ${SHELL} $< > $@ - -m5213evb-bdm.ld: cf.sc Makefile - IO=bdm ISV=1 RAMSTART=512M RAMSIZE=32K ${SHELL} $< > $@ - -m52235evb-dbug.ld: cf.sc Makefile - IO=dbug RAMSTART=512M RAMSIZE=32K RAMDBUG=8K ${SHELL} $< > $@ - -m52235evb-bdm.ld: cf.sc Makefile - IO=bdm ISV=1 RAMSTART=512M RAMSIZE=32K ${SHELL} $< > $@ - -m5235evb-dbug.ld: cf.sc Makefile - IO=dbug RAMSTART=0M RAMSIZE=16M RAMDBUG=64K ${SHELL} $< > $@ - -m5235evb-bdm.ld: cf.sc Makefile - IO=bdm ISV=1 RAMSTART=0M RAMSIZE=16M ${SHELL} $< > $@ - -m5272c3-dbug.ld: cf.sc Makefile - IO=dbug RAMSTART=0M RAMSIZE=4M RAMDBUG=128K ${SHELL} $< > $@ - -m5272c3-bdm.ld: cf.sc Makefile - IO=bdm ISV=1 RAMSTART=0M RAMSIZE=4M ${SHELL} $< > $@ - -m5282evb-dbug.ld: cf.sc Makefile - IO=dbug RAMSTART=0M RAMSIZE=16M RAMDBUG=64K ${SHELL} $< > $@ - -m5282evb-bdm.ld: cf.sc Makefile - IO=bdm ISV=1 RAMSTART=0M RAMSIZE=16M ${SHELL} $< > $@ - -m5329evb-dbug.ld: cf.sc Makefile - IO=dbug RAMSTART=1024M RAMSIZE=32M RAMDBUG=128K ${SHELL} $< > $@ - -m5329evb-bdm.ld: cf.sc Makefile - IO=bdm ISV=1 RAMSTART=1024M RAMSIZE=32M RAMDBUG=128K ${SHELL} $< > $@ - -m5485evb-dbug.ld: cf.sc Makefile - IO=dbug RAMSTART=0M RAMSIZE=64M RAMDBUG=128K ${SHELL} $< > $@ - -m5485evb-bdm.ld: cf.sc Makefile - IO=bdm ISV=1 RAMSTART=0M RAMSIZE=64M ${SHELL} $< > $@ +# RAM ROM +m5208evb := 1024M 16M 0M 2M +m5213evb := 512M 32K 0M 256K +m52235evb := 512M 32K 0M 256K +m5235evb := 0M 16M 0xFFE00000 2M +m5273c3 := 0M 4M 0xFFE00000 2M +m5282evb := 0M 16M 0xFFE00000 2M +m5329evb := 1024M 32M 0M 2M +m5485evb := 0M 64M 1024M 16M + +%-bdm.ld : cf.sc Makefile + RAM=$(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 $< @@ -372,9 +334,8 @@ 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 diff --git a/libgloss/m68k/bdm-crt0.S b/libgloss/m68k/bdm-crt0.S new file mode 100644 index 000000000..dac6ac421 --- /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 000000000..c9cfe649f --- /dev/null +++ b/libgloss/m68k/bdm-crt1.c @@ -0,0 +1,63 @@ +/* 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; + + /* 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 (hardware_init_hook) + hardware_init_hook (); + 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/bdm-exit.c b/libgloss/m68k/bdm-exit.c index 71fa3af26..5223bcd37 100644 --- a/libgloss/m68k/bdm-exit.c +++ b/libgloss/m68k/bdm-exit.c @@ -17,6 +17,8 @@ #include "bdm-semihost.h" #include "bdm-gdb.h" +extern void __reset (void); + /* * _exit -- Exit from the application. */ @@ -26,5 +28,6 @@ void __attribute__ ((noreturn)) _exit (int code) while (1) { BDM_TRAP (BDM_EXIT, code); + __reset (); } } diff --git a/libgloss/m68k/bdm-isv.c b/libgloss/m68k/bdm-isv.c deleted file mode 100644 index b6a7e02b6..000000000 --- a/libgloss/m68k/bdm-isv.c +++ /dev/null @@ -1,148 +0,0 @@ -/* - * 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 and initialization - code for the interrupt vector. All but one of the interrupts are - user replaceable. - - User trap BDM_TRAPNUM (15) is used for semi hosting support. - If you replace this one, semihosting will cease to function. */ - -#include "bdm-semihost.h" - -#define NUM_VECTORS 256 - -#define ISR_DECLARE(NAME) void __attribute__((interrupt_handler)) NAME (void) - -ISR_DECLARE (__other_interrupt); -ISR_DECLARE (__reset); -ISR_DECLARE (__access_error); -ISR_DECLARE (__address_error); -ISR_DECLARE (__illegal_instruction); -ISR_DECLARE (__divide_by_zero); -ISR_DECLARE (__privilege_violation); -ISR_DECLARE (__trace); -ISR_DECLARE (__unimplemented_line_a_opcode); -ISR_DECLARE (__unimplemented_line_f_opcode); -ISR_DECLARE (__non_pc_breakpoint_debug_interrupt); -ISR_DECLARE (__pc_breakpoint_debug_interrupt); -ISR_DECLARE (__format_error); -ISR_DECLARE (__spurious_interrupt); -ISR_DECLARE (__trap0); -ISR_DECLARE (__trap1); -ISR_DECLARE (__trap2); -ISR_DECLARE (__trap3); -ISR_DECLARE (__trap4); -ISR_DECLARE (__trap5); -ISR_DECLARE (__trap6); -ISR_DECLARE (__trap7); -ISR_DECLARE (__trap8); -ISR_DECLARE (__trap9); -ISR_DECLARE (__trap10); -ISR_DECLARE (__trap11); -ISR_DECLARE (__trap12); -ISR_DECLARE (__trap13); -ISR_DECLARE (__trap14); -ISR_DECLARE (__trap15); -ISR_DECLARE (__fp_branch_unordered); -ISR_DECLARE (__fp_inexact_result); -ISR_DECLARE (__fp_divide_by_zero); -ISR_DECLARE (__fp_underflow); -ISR_DECLARE (__fp_operand_error); -ISR_DECLARE (__fp_overflow); -ISR_DECLARE (__fp_input_not_a_number); -ISR_DECLARE (__fp_input_denormalized_number); -ISR_DECLARE (__unsupported_instruction); - -/* The trap used for semihosting by the debugger. This must have a - particular assembly signature, so we don't generate it with the - compiler. */ -ISR_DECLARE (__bdm_semihosting); - -/* The interrupt vector itself must be provided by the linker script - as it requires 1MB alignment. */ -extern void (*__interrupt_vector[NUM_VECTORS])(void); - -/* The linker script sets the stack pointer too. */ -extern int __attribute__ ((weak)) __stack; - -/* This hook is called during crt startup and installs and initializes - the vector table. It is overridable by a user provided routine. - If the user routine fails to install the __bdm_semihosting routine, - semihosting will cease to function. */ - -void software_init_hook (void) -{ - unsigned ix; - - /* Don't set it if it's -1 (zero is a valid value) */ - if ((long)&__interrupt_vector == -1) - return; - - for (ix = 0; ix != NUM_VECTORS; ix++) - __interrupt_vector[ix] = &__other_interrupt; - - /* Set the VBR. */ - __asm__ __volatile__ ("movec.l %0,%/vbr" :: "r" (&__interrupt_vector)); - - /* Set an initial stack and reset vector, in case we unexpectedly get - reset. */ - __interrupt_vector[0] = (&__stack ? (void (*)(void))&__stack - : (void (*)(void))&__interrupt_vector[NUM_VECTORS]); - __interrupt_vector[1] = &__reset; - - /* Store the known interrupt vectors */ - __interrupt_vector[2] = &__access_error; - __interrupt_vector[3] = &__address_error; - __interrupt_vector[4] = &__illegal_instruction; - __interrupt_vector[5] = &__divide_by_zero; - __interrupt_vector[8] = &__privilege_violation; - __interrupt_vector[9] = &__trace; - __interrupt_vector[10] = &__unimplemented_line_a_opcode; - __interrupt_vector[11] = &__unimplemented_line_f_opcode; - __interrupt_vector[12] = &__non_pc_breakpoint_debug_interrupt; - __interrupt_vector[13] = &__pc_breakpoint_debug_interrupt; - __interrupt_vector[14] = &__format_error; - __interrupt_vector[24] = &__spurious_interrupt; - __interrupt_vector[32] = &__trap0; - __interrupt_vector[33] = &__trap1; - __interrupt_vector[34] = &__trap2; - __interrupt_vector[35] = &__trap3; - __interrupt_vector[36] = &__trap4; - __interrupt_vector[37] = &__trap5; - __interrupt_vector[38] = &__trap6; - __interrupt_vector[39] = &__trap7; - __interrupt_vector[40] = &__trap8; - __interrupt_vector[41] = &__trap9; - __interrupt_vector[42] = &__trap10; - __interrupt_vector[43] = &__trap11; - __interrupt_vector[44] = &__trap12; - __interrupt_vector[45] = &__trap13; - __interrupt_vector[46] = &__trap14; - __interrupt_vector[47] = &__trap15; - __interrupt_vector[48] = &__fp_branch_unordered; - __interrupt_vector[49] = &__fp_inexact_result; - __interrupt_vector[50] = &__fp_divide_by_zero; - __interrupt_vector[51] = &__fp_underflow; - __interrupt_vector[52] = &__fp_operand_error; - __interrupt_vector[53] = &__fp_overflow; - __interrupt_vector[54] = &__fp_input_not_a_number; - __interrupt_vector[55] = &__fp_input_denormalized_number; - __interrupt_vector[61] = &__unsupported_instruction; - - /* Install the special handler. */ - __interrupt_vector[0x20 + BDM_TRAPNUM] = &__bdm_semihosting; -} diff --git a/libgloss/m68k/cf.sc b/libgloss/m68k/cf.sc index 01b07b9dc..b19dce4ce 100644 --- a/libgloss/m68k/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 -# ISV - nonnull if interrupt service vector should be provided. -# IO - io library +# 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) -ENTRY(_start) +ENTRY(__start) SEARCH_DIR(.) -GROUP(-lc -l${IO}) +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} } /* Place the stack at the end of memory, unless specified otherwise. */ -PROVIDE (__stack = ${RAMSTART} + ${RAMSIZE}); - -/* Inhibit an interrupt vector, if one is not specified. */ -PROVIDE (__interrupt_vector = -1); - -/* - * 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. - */ -PROVIDE (hardware_init_hook = 0); -PROVIDE (software_init_hook = 0); -/* - * stick everything in ram (of course) - */ +PROVIDE (__stack = ${RAM} + ${RAM_SIZE}); + SECTIONS { .text : { CREATE_OBJECT_SYMBOLS - ${ISV+__interrupt_vector = .; . += 256 * 4;} + bdm-crt0.o(.text) *(.text .text.*) . = ALIGN(0x4); @@ -48,11 +36,11 @@ SECTIONS KEEP (*crtbegin.o(.ctors)) KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors)) KEEP (*(SORT(.ctors.*))) - KEEP (*(.ctors)) + KEEP (*crtend.o(.ctors)) KEEP (*crtbegin.o(.dtors)) KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors)) KEEP (*(SORT(.dtors.*))) - KEEP (*(.dtors)) + KEEP (*crtend.o(.dtors)) *(.rodata .rodata.*) @@ -76,28 +64,33 @@ SECTIONS SHORT (0x4e5e) /* unlk %fp */ SHORT (0x4e75) /* rts */ - _etext = .; *(.lit) - } > ram + + . = ALIGN(4); + _etext = .; + } >${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/dbug-exit.S b/libgloss/m68k/dbug-exit.S deleted file mode 100644 index 6baae8b19..000000000 --- a/libgloss/m68k/dbug-exit.S +++ /dev/null @@ -1,29 +0,0 @@ -/* - * dbug-exit.S -- - * - * Copyright (c) 1996 Cygnus Support - * - * 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 - .global SYM (_exit) -/* - * _exit -- Exit from the application. Normally we cause a user trap - * to return to the ROM monitor for another run. - */ - .text - .align 2 -SYM (_exit): - moveql IMM(0),d0 - trap IMM(15) diff --git a/libgloss/m68k/dbug-inbyte.S b/libgloss/m68k/dbug-inbyte.S deleted file mode 100644 index 128c260b5..000000000 --- a/libgloss/m68k/dbug-inbyte.S +++ /dev/null @@ -1,34 +0,0 @@ -/* - * dbug-inbyte.S -- - * - * Copyright (c) 1996 Cygnus Support - * - * 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 - .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 diff --git a/libgloss/m68k/dbug-outbyte.S b/libgloss/m68k/dbug-outbyte.S deleted file mode 100644 index 9d0c86443..000000000 --- a/libgloss/m68k/dbug-outbyte.S +++ /dev/null @@ -1,34 +0,0 @@ -/* - * dbug-outbyte.S -- - * - * Copyright (c) 1996 Cygnus Support - * - * 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 - .global SYM (outbyte) - .global SYM (putDebugChar) - -/* - * outbyte -- sends a byte out the serial port - * d0 - contains the byte to be sent - */ - .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 |