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-rw-r--r--c/src/lib/libbsp/m68k/efi332/startup/Makefile.am12
-rw-r--r--c/src/lib/libbsp/m68k/efi332/startup/except_vect_332_ROM.S290
-rw-r--r--c/src/lib/libbsp/m68k/efi332/startup/linkcmds8
-rw-r--r--c/src/lib/libbsp/m68k/efi332/startup/linkcmds_ROM211
4 files changed, 156 insertions, 365 deletions
diff --git a/c/src/lib/libbsp/m68k/efi332/startup/Makefile.am b/c/src/lib/libbsp/m68k/efi332/startup/Makefile.am
index d8fa5fd721..30b383f156 100644
--- a/c/src/lib/libbsp/m68k/efi332/startup/Makefile.am
+++ b/c/src/lib/libbsp/m68k/efi332/startup/Makefile.am
@@ -12,7 +12,7 @@ C_FILES = bsplibc.c bsppost.c bspstart.c bspclean.c bootcard.c \
m68kpretaskinghook.c main.c sbrk.c setvec.c gnatinstallhandler.c
C_O_FILES = $(C_FILES:%.c=$(ARCH)/%.o)
-S_FILES = except_vect_332_ROM.S
+S_FILES =
S_O_FILES = $(S_FILES:%.S=$(ARCH)/%.o)
OBJS = $(C_O_FILES) $(S_O_FILES)
@@ -37,20 +37,14 @@ $(PROJECT_RELEASE)/lib/linkcmds: linkcmds
$(PROJECT_RELEASE)/lib/linkcmds_ROM: linkcmds_ROM
$(INSTALL_DATA) $< $@
-$(PROJECT_RELEASE)/lib/except_vect_332_ROM$(LIB_VARIANT).o: \
- $(ARCH)/except_vect_332_ROM.o
- $(INSTALL_DATA) $< $@
-
# the .rel file built here will be put into libbsp.a by ../wrapup/Makefile
TMPINSTALL_FILES += $(PROJECT_RELEASE)/lib/linkcmds \
- $(PROJECT_RELEASE)/lib/linkcmds_ROM \
- $(PROJECT_RELEASE)/lib/except_vect_332_ROM$(LIB_VARIANT).o
+ $(PROJECT_RELEASE)/lib/linkcmds_ROM
all-local: $(ARCH) $(OBJS) $(PGM) $(TMPINSTALL_FILES)
.PRECIOUS: $(PGM)
-EXTRA_DIST = bspclean.c bspstart.c except_vect_332_ROM.S linkcmds \
- linkcmds_ROM
+EXTRA_DIST = bspclean.c bspstart.c linkcmds linkcmds_ROM
include $(top_srcdir)/../../../../../../automake/local.am
diff --git a/c/src/lib/libbsp/m68k/efi332/startup/except_vect_332_ROM.S b/c/src/lib/libbsp/m68k/efi332/startup/except_vect_332_ROM.S
deleted file mode 100644
index 9eb2f20556..0000000000
--- a/c/src/lib/libbsp/m68k/efi332/startup/except_vect_332_ROM.S
+++ /dev/null
@@ -1,290 +0,0 @@
-/*
- * $Id$
- */
-
-/* Exception Vector definitions follow */
-
- /* !!! Warning !!! This table is not tested, and
- the user must make sure it is complete. */
-
- /* If we use TRAP #15 for reboot, note that group 0 and 1 exceptions
- will have priority. */
-
- /* Vector 0: RESET: Initial SSP */
- .long _RamEnd
- /* Vector 1: RESET: Initial PC */
- .long start
-
- /* default action for undefined vectors is to re-boot */
-
- /* Note group 0 and 1 exception (like trace) have priority
- over other exceptions (like trap #15) that may call this. */
-
- /* Vectors 2-255 */
- .long reboot /* exception vector: 2 */
- .long reboot /* exception vector: 3 */
- .long reboot /* exception vector: 4 */
- .long reboot /* exception vector: 5 */
- .long reboot /* exception vector: 6 */
- .long reboot /* exception vector: 7 */
- .long reboot /* exception vector: 8 */
- .long reboot /* exception vector: 9 */
- .long reboot /* exception vector: 10 */
- .long reboot /* exception vector: 11 */
- .long reboot /* exception vector: 12 */
- .long reboot /* exception vector: 13 */
- .long reboot /* exception vector: 14 */
- .long reboot /* exception vector: 15 */
- .long reboot /* exception vector: 16 */
- .long reboot /* exception vector: 17 */
- .long reboot /* exception vector: 18 */
- .long reboot /* exception vector: 19 */
- .long reboot /* exception vector: 20 */
- .long reboot /* exception vector: 21 */
- .long reboot /* exception vector: 22 */
- .long reboot /* exception vector: 23 */
- .long reboot /* exception vector: 24 */
- .long reboot /* exception vector: 25 */
- .long reboot /* exception vector: 26 */
- .long reboot /* exception vector: 27 */
- .long reboot /* exception vector: 28 */
- .long reboot /* exception vector: 29 */
- .long reboot /* exception vector: 30 */
- .long reboot /* exception vector: 31 */
- .long reboot /* exception vector: 32 */
- .long reboot /* exception vector: 33 */
- .long reboot /* exception vector: 34 */
- .long reboot /* exception vector: 35 */
- .long reboot /* exception vector: 36 */
- .long reboot /* exception vector: 37 */
- .long reboot /* exception vector: 38 */
- .long reboot /* exception vector: 39 */
- .long reboot /* exception vector: 40 */
- .long reboot /* exception vector: 41 */
- .long reboot /* exception vector: 42 */
- .long reboot /* exception vector: 43 */
- .long reboot /* exception vector: 44 */
- .long reboot /* exception vector: 45 */
- .long reboot /* exception vector: 46 */
- .long _reboot /* the reboot trap: 47 */
- .long reboot /* exception vector: 48 */
- .long reboot /* exception vector: 49 */
- .long reboot /* exception vector: 50 */
- .long reboot /* exception vector: 51 */
- .long reboot /* exception vector: 52 */
- .long reboot /* exception vector: 53 */
- .long reboot /* exception vector: 54 */
- .long reboot /* exception vector: 55 */
- .long reboot /* exception vector: 56 */
- .long reboot /* exception vector: 57 */
- .long reboot /* exception vector: 58 */
- .long reboot /* exception vector: 59 */
- .long reboot /* exception vector: 60 */
- .long reboot /* exception vector: 61 */
- .long reboot /* exception vector: 62 */
- .long reboot /* exception vector: 63 */
- .long reboot /* exception vector: 64 */
- .long reboot /* exception vector: 65 */
- .long reboot /* exception vector: 66 */
- .long reboot /* exception vector: 67 */
- .long reboot /* exception vector: 68 */
- .long reboot /* exception vector: 69 */
- .long reboot /* exception vector: 70 */
- .long reboot /* exception vector: 71 */
- .long reboot /* exception vector: 72 */
- .long reboot /* exception vector: 73 */
- .long reboot /* exception vector: 74 */
- .long reboot /* exception vector: 75 */
- .long reboot /* exception vector: 76 */
- .long reboot /* exception vector: 77 */
- .long reboot /* exception vector: 78 */
- .long reboot /* exception vector: 79 */
- .long reboot /* exception vector: 80 */
- .long reboot /* exception vector: 81 */
- .long reboot /* exception vector: 82 */
- .long reboot /* exception vector: 83 */
- .long reboot /* exception vector: 84 */
- .long reboot /* exception vector: 85 */
- .long reboot /* exception vector: 86 */
- .long reboot /* exception vector: 87 */
- .long reboot /* exception vector: 88 */
- .long reboot /* exception vector: 89 */
- .long reboot /* exception vector: 90 */
- .long reboot /* exception vector: 91 */
- .long reboot /* exception vector: 92 */
- .long reboot /* exception vector: 93 */
- .long reboot /* exception vector: 94 */
- .long reboot /* exception vector: 95 */
- .long reboot /* exception vector: 96 */
- .long reboot /* exception vector: 97 */
- .long reboot /* exception vector: 98 */
- .long reboot /* exception vector: 99 */
- .long reboot /* exception vector: 100 */
- .long reboot /* exception vector: 101 */
- .long reboot /* exception vector: 102 */
- .long reboot /* exception vector: 103 */
- .long reboot /* exception vector: 104 */
- .long reboot /* exception vector: 105 */
- .long reboot /* exception vector: 106 */
- .long reboot /* exception vector: 107 */
- .long reboot /* exception vector: 108 */
- .long reboot /* exception vector: 109 */
- .long reboot /* exception vector: 110 */
- .long reboot /* exception vector: 111 */
- .long reboot /* exception vector: 112 */
- .long reboot /* exception vector: 113 */
- .long reboot /* exception vector: 114 */
- .long reboot /* exception vector: 115 */
- .long reboot /* exception vector: 116 */
- .long reboot /* exception vector: 117 */
- .long reboot /* exception vector: 118 */
- .long reboot /* exception vector: 119 */
- .long reboot /* exception vector: 120 */
- .long reboot /* exception vector: 121 */
- .long reboot /* exception vector: 122 */
- .long reboot /* exception vector: 123 */
- .long reboot /* exception vector: 124 */
- .long reboot /* exception vector: 125 */
- .long reboot /* exception vector: 126 */
- .long reboot /* exception vector: 127 */
- .long reboot /* exception vector: 128 */
- .long reboot /* exception vector: 129 */
- .long reboot /* exception vector: 130 */
- .long reboot /* exception vector: 131 */
- .long reboot /* exception vector: 132 */
- .long reboot /* exception vector: 133 */
- .long reboot /* exception vector: 134 */
- .long reboot /* exception vector: 135 */
- .long reboot /* exception vector: 136 */
- .long reboot /* exception vector: 137 */
- .long reboot /* exception vector: 138 */
- .long reboot /* exception vector: 139 */
- .long reboot /* exception vector: 140 */
- .long reboot /* exception vector: 141 */
- .long reboot /* exception vector: 142 */
- .long reboot /* exception vector: 143 */
- .long reboot /* exception vector: 144 */
- .long reboot /* exception vector: 145 */
- .long reboot /* exception vector: 146 */
- .long reboot /* exception vector: 147 */
- .long reboot /* exception vector: 148 */
- .long reboot /* exception vector: 149 */
- .long reboot /* exception vector: 150 */
- .long reboot /* exception vector: 151 */
- .long reboot /* exception vector: 152 */
- .long reboot /* exception vector: 153 */
- .long reboot /* exception vector: 154 */
- .long reboot /* exception vector: 155 */
- .long reboot /* exception vector: 156 */
- .long reboot /* exception vector: 157 */
- .long reboot /* exception vector: 158 */
- .long reboot /* exception vector: 159 */
- .long reboot /* exception vector: 160 */
- .long reboot /* exception vector: 161 */
- .long reboot /* exception vector: 162 */
- .long reboot /* exception vector: 163 */
- .long reboot /* exception vector: 164 */
- .long reboot /* exception vector: 165 */
- .long reboot /* exception vector: 166 */
- .long reboot /* exception vector: 167 */
- .long reboot /* exception vector: 168 */
- .long reboot /* exception vector: 169 */
- .long reboot /* exception vector: 170 */
- .long reboot /* exception vector: 171 */
- .long reboot /* exception vector: 172 */
- .long reboot /* exception vector: 173 */
- .long reboot /* exception vector: 174 */
- .long reboot /* exception vector: 175 */
- .long reboot /* exception vector: 176 */
- .long reboot /* exception vector: 177 */
- .long reboot /* exception vector: 178 */
- .long reboot /* exception vector: 179 */
- .long reboot /* exception vector: 180 */
- .long reboot /* exception vector: 181 */
- .long reboot /* exception vector: 182 */
- .long reboot /* exception vector: 183 */
- .long reboot /* exception vector: 184 */
- .long reboot /* exception vector: 185 */
- .long reboot /* exception vector: 186 */
- .long reboot /* exception vector: 187 */
- .long reboot /* exception vector: 188 */
- .long reboot /* exception vector: 189 */
- .long reboot /* exception vector: 190 */
- .long reboot /* exception vector: 191 */
- .long reboot /* exception vector: 192 */
- .long reboot /* exception vector: 193 */
- .long reboot /* exception vector: 194 */
- .long reboot /* exception vector: 195 */
- .long reboot /* exception vector: 196 */
- .long reboot /* exception vector: 197 */
- .long reboot /* exception vector: 198 */
- .long reboot /* exception vector: 199 */
- .long reboot /* exception vector: 200 */
- .long reboot /* exception vector: 201 */
- .long reboot /* exception vector: 202 */
- .long reboot /* exception vector: 203 */
- .long reboot /* exception vector: 204 */
- .long reboot /* exception vector: 205 */
- .long reboot /* exception vector: 206 */
- .long reboot /* exception vector: 207 */
- .long reboot /* exception vector: 208 */
- .long reboot /* exception vector: 209 */
- .long reboot /* exception vector: 210 */
- .long reboot /* exception vector: 211 */
- .long reboot /* exception vector: 212 */
- .long reboot /* exception vector: 213 */
- .long reboot /* exception vector: 214 */
- .long reboot /* exception vector: 215 */
- .long reboot /* exception vector: 216 */
- .long reboot /* exception vector: 217 */
- .long reboot /* exception vector: 218 */
- .long reboot /* exception vector: 219 */
- .long reboot /* exception vector: 220 */
- .long reboot /* exception vector: 221 */
- .long reboot /* exception vector: 222 */
- .long reboot /* exception vector: 223 */
- .long reboot /* exception vector: 224 */
- .long reboot /* exception vector: 225 */
- .long reboot /* exception vector: 226 */
- .long reboot /* exception vector: 227 */
- .long reboot /* exception vector: 228 */
- .long reboot /* exception vector: 229 */
- .long reboot /* exception vector: 230 */
- .long reboot /* exception vector: 231 */
- .long reboot /* exception vector: 232 */
- .long reboot /* exception vector: 233 */
- .long reboot /* exception vector: 234 */
- .long reboot /* exception vector: 235 */
- .long reboot /* exception vector: 236 */
- .long reboot /* exception vector: 237 */
- .long reboot /* exception vector: 238 */
- .long reboot /* exception vector: 239 */
- .long reboot /* exception vector: 240 */
- .long reboot /* exception vector: 241 */
- .long reboot /* exception vector: 242 */
- .long reboot /* exception vector: 243 */
- .long reboot /* exception vector: 244 */
- .long reboot /* exception vector: 245 */
- .long reboot /* exception vector: 246 */
- .long reboot /* exception vector: 247 */
- .long reboot /* exception vector: 248 */
- .long reboot /* exception vector: 249 */
- .long reboot /* exception vector: 250 */
- .long reboot /* exception vector: 251 */
- .long reboot /* exception vector: 252 */
- .long reboot /* exception vector: 253 */
- .long reboot /* exception vector: 254 */
- .long reboot /* exception vector: 255 */
-
-
-_reboot:
- move #0x2700,%sr /* mask interrupts */
- movea.l (0x0).w,%a7 /* load stack */
- movea.l (0x4).w,%a0 /* jmp to location of reset vector */
- jmp (%a0)
-
-reboot:
- trap #15 /* use trap exception to enter supervisor
- state. Trace mode ( and other group 0
- and 1 exceptions) *could* screw this up if
- not vectored to reboot or did not return. */
diff --git a/c/src/lib/libbsp/m68k/efi332/startup/linkcmds b/c/src/lib/libbsp/m68k/efi332/startup/linkcmds
index 2750cdaef8..921073d180 100644
--- a/c/src/lib/libbsp/m68k/efi332/startup/linkcmds
+++ b/c/src/lib/libbsp/m68k/efi332/startup/linkcmds
@@ -9,6 +9,7 @@ __DYNAMIC = 0;
/*
* The memory map looks like this:
* +--------------------+ <- low memory
+ * | _RamBase |
* | .text |
* | etext |
* | ctor list | the ctor and dtor lists are for
@@ -23,10 +24,11 @@ __DYNAMIC = 0;
* | _clear_start| start of bss, cleared by crt0
* | _end | start of heap, used by sbrk()
* +--------------------+
+ * | _WorkspaceBase
+ * | work space |
+ * | heapStart |
* | heap space |
- * | _ENDHEAP |
- * | stack space |
- * | __stack | top of stack
+ * | _RamEnd | top of stack
* +--------------------+ <- high memory
*/
diff --git a/c/src/lib/libbsp/m68k/efi332/startup/linkcmds_ROM b/c/src/lib/libbsp/m68k/efi332/startup/linkcmds_ROM
index acfee4c07f..bdc7206975 100644
--- a/c/src/lib/libbsp/m68k/efi332/startup/linkcmds_ROM
+++ b/c/src/lib/libbsp/m68k/efi332/startup/linkcmds_ROM
@@ -8,6 +8,7 @@ STARTUP(except_vect_332_ROM.o)
__DYNAMIC = 0;
/*
+ * The memory map looks like this:
* ROM:
* +--------------------+ <- low memory
* | .text |
@@ -22,30 +23,38 @@ __DYNAMIC = 0;
*
* RAM:
* +--------------------+ <- low memory
+ * | _RamBase |
* | .data | initialized data goes here
* | _sdata |
* | _edata |
* +--------------------+
* | .bss |
- * | __bss_start | start of bss, cleared by crt0
+ * | _clear_start| start of bss, cleared by crt0
* | _end | start of heap, used by sbrk()
* +--------------------+
+ * | _WorkspaceBase
+ * | work space |
+ * | heapStart |
* | heap space |
- * | _ENDHEAP |
- * | stack space |
- * | __stack | top of stack
+ * | _RamEnd | top of stack
* +--------------------+ <- high memory
*/
+/*
+ * Declare some sizes.
+ */
+_RamBase = DEFINED(_RamBase) ? _RamBase : 0x80000;
+_RamSize = DEFINED(_RamSize) ? _RamSize : 0x40000;
+_RamEnd = _RamBase + _RamSize;
+_HeapSize = DEFINED(_HeapSize) ? _HeapSize : 0x10000;
+_StackSize = DEFINED(_StackSize) ? _StackSize : 0x1000;
+
MEMORY
{
rom : ORIGIN = 0x00000, LENGTH = 256K
- ram : ORIGIN = 0x80000, LENGTH = 512K
+ ram : ORIGIN = 0x80000, LENGTH = 256K
}
-_RamBase = DEFINED(_RamBase) ? _RamBase : 0x080000;
-
-__end_of_ram = 0x100000;
_copy_data_from_rom = 1;
/*
@@ -53,69 +62,145 @@ _copy_data_from_rom = 1;
*/
SECTIONS
{
- .text :
- {
- CREATE_OBJECT_SYMBOLS
- text_start = .;
- _text_start = .;
+ ram : {
+ . = .;
+ } >ram
+
+ /*
+ * Text, data and bss segments
+ */
+ .text : {
*(.text)
- . = ALIGN (16);
- *(.eh_fram)
- . = ALIGN (16);
+ /*
+ * C++ constructors/destructors
+ */
+ *(.gnu.linkonce.t.*)
+
+ /*
+ * Initialization and finalization code.
+ *
+ * Various files can provide initialization and finalization
+ * functions. crtbegin.o and crtend.o are two instances. The
+ * body of these functions are in .init and .fini sections. We
+ * accumulate the bodies here, and prepend function prologues
+ * from crti.o and function epilogues from crtn.o. crti.o must
+ * be linked first; crtn.o must be linked last. Because these
+ * are wildcards, it doesn't matter if the user does not
+ * actually link against crti.o and crtn.o; the linker won't
+ * look for a file to match a wildcard. The wildcard also
+ * means that it doesn't matter which directory crti.o and
+ * crtn.o are in.
+ */
+ PROVIDE (_init = .);
+ *crti.o(.init)
+ *(.init)
+ *crtn.o(.init)
+ PROVIDE (_fini = .);
+ *crti.o(.fini)
+ *(.fini)
+ *crtn.o(.fini)
- etext = ALIGN(0x10);
- _etext = .;
- __CTOR_LIST__ = .;
- LONG((__CTOR_END__ - __CTOR_LIST__) / 4 - 2)
+ /*
+ * C++ constructors/destructors
+ *
+ * gcc uses crtbegin.o to find the start of the constructors
+ * and destructors so we make sure it is first. Because this
+ * is a wildcard, it doesn't matter if the user does not
+ * actually link against crtbegin.o; the linker won't look for
+ * a file to match a wildcard. The wildcard also means that
+ * it doesn't matter which directory crtbegin.o is in. The
+ * constructor and destructor list are terminated in
+ * crtend.o. The same comments apply to it.
+ */
+ . = ALIGN (16);
+ *crtbegin.o(.ctors)
*(.ctors)
- LONG(0)
- __CTOR_END__ = .;
- __DTOR_LIST__ = .;
- LONG((__DTOR_END__ - __DTOR_LIST__) / 4 - 2)
+ *crtend.o(.ctors)
+ *crtbegin.o(.dtors)
*(.dtors)
- LONG(0)
- __DTOR_END__ = .;
- *(.lit)
- *(.shdata)
- _endtext = .;
- } > rom
- .gcc_exc :
- AT ( ADDR(.text) + SIZEOF( .text ) )
- {
- *(.gcc_exc)
- } > ram
+ *crtend.o(.dtors)
+
+ /*
+ * Exception frame info
+ */
+ . = ALIGN (16);
+ *(.eh_frame)
+
+ /*
+ * Read-only data
+ */
+ . = ALIGN (16);
+ _rodata_start = . ;
+ *(.rodata)
+ *(.gnu.linkonce.r*)
+
+ . = ALIGN (16);
+ PROVIDE (_etext = .);
+ } >rom
.data :
+ AT ( ADDR(.text) + SIZEOF( .text ) )
{
- data_start = .;
- _data_start = .;
- _sdata = . ;
+ PROVIDE (_copy_start = .);
*(.data)
- CONSTRUCTORS
- edata = ALIGN(0x10);
- _edata = .;
- } > ram
- .shbss :
- {
- *(.shbss)
- } > ram
- .bss :
- {
- __bss_start = ALIGN(0x8);
- bss_start = .;
- _bss_start = .;
+ *(.gnu.linkonce.d*)
+ *(.gcc_except_table)
+ . = ALIGN (16);
+ PROVIDE (_edata = .);
+ PROVIDE (_copy_end = .);
+ } >ram
+ .bss : {
+ _clear_start = .;
*(.bss)
*(COMMON)
- end = .;
- _end = ALIGN(0x8);
- __end = ALIGN(0x8);
- } > ram
- .stab . (NOLOAD) :
- {
- [ .stab ]
- }
- .stabstr . (NOLOAD) :
- {
- [ .stabstr ]
- }
+ . = ALIGN (16);
+ PROVIDE (end = .);
+
+ . += _StackSize;
+ . = ALIGN (16);
+ _stack_init = .;
+ _clear_end = .;
+
+ _WorkspaceBase = .;
+ } >ram
+
+ /* Stabs debugging sections. */
+ .stab 0 : { *(.stab) }
+ .stabstr 0 : { *(.stabstr) }
+ .stab.excl 0 : { *(.stab.excl) }
+ .stab.exclstr 0 : { *(.stab.exclstr) }
+ .stab.index 0 : { *(.stab.index) }
+ .stab.indexstr 0 : { *(.stab.indexstr) }
+ .comment 0 : { *(.comment) }
+
+ /* DWARF debug sections.
+ Symbols in the DWARF debugging sections are relative to the beginning
+ of the section so we begin them at 0. */
+ /* DWARF 1 */
+ .debug 0 : { *(.debug) }
+ .line 0 : { *(.line) }
+
+ /* GNU DWARF 1 extensions */
+ .debug_srcinfo 0 : { *(.debug_srcinfo) }
+ .debug_sfnames 0 : { *(.debug_sfnames) }
+
+ /* DWARF 1.1 and DWARF 2 */
+ .debug_aranges 0 : { *(.debug_aranges) }
+ .debug_pubnames 0 : { *(.debug_pubnames) }
+
+ /* DWARF 2 */
+ .debug_info 0 : { *(.debug_info) }
+ .debug_abbrev 0 : { *(.debug_abbrev) }
+ .debug_line 0 : { *(.debug_line) }
+ .debug_frame 0 : { *(.debug_frame) }
+ .debug_str 0 : { *(.debug_str) }
+ .debug_loc 0 : { *(.debug_loc) }
+ .debug_macinfo 0 : { *(.debug_macinfo) }
+
+ /* SGI/MIPS DWARF 2 extensions */
+ .debug_weaknames 0 : { *(.debug_weaknames) }
+ .debug_funcnames 0 : { *(.debug_funcnames) }
+ .debug_typenames 0 : { *(.debug_typenames) }
+ .debug_varnames 0 : { *(.debug_varnames) }
+ /* These must appear regardless of . */
}