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linkcmds @ 84e59b7c

Last change on this file since 84e59b7c was 84e59b7c, checked in by Sebastian Huber <sebastian.huber@…>, on 11/15/18 at 19:47:22

bsps/powerpc: Use interrupt stack for init stack

Move start.o to separate file.

Update #3459.

Property mode set to 100644

File size: 10.7 KB

Rev	Line
[16a8616]	1	/*
	2	* This file contains directives for the GNU linker which are specific to the
	3	* Virtex 4 PPC 405. No assumptions are made on the firmware in the FPGA.
	4	* This file is intended to be used together with start.S to generate
	5	* downloadable code.
	6	*/
	7
	8	OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", "elf32-powerpc")
	9	OUTPUT_ARCH(powerpc)
	10
[84e59b7c]	11	STARTUP(start.o)
[16a8616]	12	ENTRY(download_entry)
[b80d7355]	13	EXTERN(download_entry)
	14	EXTERN(__vectors)
[16a8616]	15
	16	MsgAreaSize = DEFINED(MsgAreaSize) ? MsgAreaSize : 1M;
	17	RamBase = DEFINED(RamBase) ? RamBase : 0x0;
	18	RamSize = DEFINED(RamSize) ? RamSize : 128M - MsgAreaSize;
	19	HeapSize = DEFINED(HeapSize) ? HeapSize : 0; /* 0=Use def */
	20
	21
	22	MEMORY
	23	{
[5b822ab]	24	VECTORS : ORIGIN = 0x00000000, LENGTH = 12K
	25	RAM : ORIGIN = 0x00003000, LENGTH = 128M - 12K
[16a8616]	26	}
	27
	28
	29	SECTIONS
	30	{
[5b822ab]	31	bsp_exc_vector_base = 0x100;
	32	__exeentry = download_entry;
	33	__exestart = bsp_exc_vector_base;
	34	.vectors bsp_exc_vector_base : { *(.vectors) } > VECTORS
[16a8616]	35
	36	/* Read-only sections, merged into text segment: */
	37	.interp : { *(.interp) } > RAM
	38	.hash : { *(.hash) } > RAM
	39	.dynsym : { *(.dynsym) } > RAM
	40	.dynstr : { *(.dynstr) } > RAM
	41	.gnu.version : { *(.gnu.version) } > RAM
	42	.gnu.version_d : { *(.gnu.version_d) } > RAM
	43	.gnu.version_r : { *(.gnu.version_r) } > RAM
	44	.rela.text : { (.rela.text) (.rela.gnu.linkonce.t*) } > RAM
	45	.rela.data : { (.rela.data) (.rela.gnu.linkonce.d*) } > RAM
	46	.rela.rodata : { (.rela.rodata) (.rela.gnu.linkonce.r) } > RAM
	47	.rela.got : { *(.rela.got) } > RAM
	48	.rela.got1 : { *(.rela.got1) } > RAM
	49	.rela.got2 : { *(.rela.got2) } > RAM
	50	.rela.ctors : { *(.rela.ctors) } > RAM
	51	.rela.dtors : { *(.rela.dtors) } > RAM
	52	.rela.init : { *(.rela.init) } > RAM
	53	.rela.fini : { *(.rela.fini) } > RAM
	54	.rela.bss : { *(.rela.bss) } > RAM
	55	.rela.plt : { *(.rela.plt) } > RAM
	56	.rela.sdata : { *(.rela.sdata) } > RAM
	57	.rela.sbss : { *(.rela.sbss) } > RAM
	58	.rela.sdata2 : { *(.rela.sdata2) } > RAM
	59	.rela.sbss2 : { *(.rela.sbss2) } > RAM
	60	.rela.dyn : { *(.rela.dyn) } > RAM
	61
	62	/* Initialization code */
	63	.init : { PROVIDE (_init = .);
	64	*ecrti.o(.init)
	65	KEEP(*(.init))
	66	*ecrtn.o(.init)
	67	} > RAM
	68
	69	.text : { *(.entry)
	70	*(.text)
	71	(.text.)
	72
	73	/* Special FreeBSD sysctl sections */
	74	. = ALIGN (16);
	75	__start_set_sysctl_set = .;
	76	(set_sysctl_);
	77	__stop_set_sysctl_set = ABSOLUTE(.);
	78	(set_domain_);
	79	(set_pseudo_);
	80
	81	/* .gnu.warning sections are handled specially by elf32.em
	82	*/
	83	*(.gnu.warning)
	84	(.gnu.linkonce.t)
	85	} > RAM
	86
	87	/* Finalization code */
	88	.fini : { PROVIDE (_fini = .);
	89	*ecrti.o(.fini)
	90	KEEP(*(.fini))
	91	*ecrtn.o(.fini)
	92	} > RAM
	93
	94	/* Miscellaneous read-only data */
[44d18b9]	95	.rodata : { (.rodata. .gnu.linkonce.r) KEEP ((SORT(.rtemsroset.*))) } > RAM
[16a8616]	96	.rodata1 : { *(.rodata1) } > RAM
	97
[960fd85]	98	.tdata : {
	99	_TLS_Data_begin = .;
	100	(.tdata .tdata. .gnu.linkonce.td.*)
	101	_TLS_Data_end = .;
	102	} >RAM
	103
	104	.tbss : {
	105	_TLS_BSS_begin = .;
	106	(.tbss .tbss. .gnu.linkonce.tb.) (.tcommon)
	107	_TLS_BSS_end = .;
	108	} >RAM
	109
	110	_TLS_Data_size = _TLS_Data_end - _TLS_Data_begin;
[d60e760]	111	_TLS_Data_begin = _TLS_Data_size != 0 ? _TLS_Data_begin : _TLS_BSS_begin;
	112	_TLS_Data_end = _TLS_Data_size != 0 ? _TLS_Data_end : _TLS_BSS_begin;
[960fd85]	113	_TLS_BSS_size = _TLS_BSS_end - _TLS_BSS_begin;
	114	_TLS_Size = _TLS_BSS_end - _TLS_Data_begin;
[d60e760]	115	_TLS_Alignment = MAX (ALIGNOF (.tdata), ALIGNOF (.tbss));
[960fd85]	116
[16a8616]	117	/* Initialised small data addressed as offsets from r2 */
[8e980e61]	118	.sdata2 : { PROVIDE (_SDA2_BASE_ = 32768); (.sdata2 .sdata2. .gnu.linkonce.s2.*) } > RAM
[16a8616]	119
	120	/* Zeroed small data addressed as offsets from r2 */
	121	.sbss2 : { (.sbss2 .sbss2. .gnu.linkonce.sb2.*)
	122
	123	/* Avoid empty sdata2/sbss2 area: __eabi would not set up
	124	* r2 which may be important if run-time loading is used
	125	*/
	126	. += 1;
	127
	128	PROVIDE (__SBSS2_END__ = .);
	129	} > RAM
	130
	131	/* Exception frame info */
	132	.eh_frame : { (.eh_frame .eh_frame.) } > RAM
	133	.eh_frame_hdr : { *(.eh_frame_hdr) } > RAM
	134
	135	/* Declares where the .text section ends */
	136	_etext = .;
	137	PROVIDE (etext = .);
	138
	139	/* Initialized R/W Data section goes in RAM */
	140	.data : { PROVIDE(__DATA_START__ = ABSOLUTE(.) );
	141	*(.data)
	142	(.data.)
[b618d8c]	143	KEEP ((SORT(.rtemsrwset.)))
[16a8616]	144	(.gnu.linkonce.d)
	145	} > RAM
	146
	147	.data1 : { *(.data1) } > RAM
	148
	149	PROVIDE (__EXCEPT_START__ = .);
	150	.gcc_except_table : { (.gcc_except_table .gcc_except_table.) } > RAM
	151	PROVIDE (__EXCEPT_END__ = .);
	152
	153	.got1 : { *(.got1) } > RAM
	154
	155	/* Put .ctors and .dtors next to the .got2 section, so that the pointers
	156	* get relocated with -mrelocatable. Also put in the .fixup pointers.
	157	* The current compiler no longer needs this, but keep it around for 2.7.2.
	158	*/
	159	PROVIDE (_GOT2_START_ = .);
	160	.got2 : { *(.got2) } > RAM
	161
	162	.dynamic : { *(.dynamic) } > RAM
	163
	164	.ctors : { /* gcc uses crtbegin.o to find the start of
	165	* the constructors, so we make sure it is
	166	* first. Because this is a wildcard, it
	167	* doesn't matter if the user does not
	168	* actually link against crtbegin.o; the
	169	* linker won't look for a file to match a
	170	* wildcard. The wildcard also means that it
	171	* doesn't matter which directory crtbegin.o
	172	* is in.
	173	*/
	174	KEEP (*crtbegin.o(.ctors))
	175	/* We don't want to include the .ctor section from
	176	* the crtend.o file until after the sorted ctors.
	177	* The .ctor section from the crtend file contains the
	178	* end of ctors marker and it must be last.
	179	*/
	180	KEEP ((EXCLUDE_FILE (crtend.o ) .ctors))
	181	KEEP ((SORT(.ctors.)))
	182	KEEP (*(.ctors))
	183	} > RAM
	184
	185	.dtors : { KEEP (*crtbegin.o(.dtors))
	186	KEEP ((EXCLUDE_FILE (crtend.o ) .dtors))
	187	KEEP ((SORT(.dtors.)))
	188	KEEP (*(.dtors))
	189	} > RAM
	190
	191	PROVIDE (_FIXUP_START_ = .);
	192	.fixup : { *(.fixup) } > RAM
	193	PROVIDE (_FIXUP_END_ = .);
	194
	195	PROVIDE (_GOT2_END_ = .);
	196
	197	PROVIDE (_GOT_START_ = .);
	198	.got : { __got_start = .;
	199	*(.got)
	200	} > RAM
	201
	202	.got.plt : { *(.got.plt) } > RAM
	203	PROVIDE (_GOT_END_ = .);
	204
	205	.jcr : { KEEP (*(.jcr)) } > RAM
	206
	207	/* We want the small data sections together, so single-instruction offsets
	208	* can access them all, and initialized data all before uninitialized, so
	209	* we can shorten the on-disk segment size.
	210	*/
	211	/* Initialised small data addressed as offsets from r13 */
[8e980e61]	212	.sdata : { PROVIDE (_SDA_BASE_ = 32768); (.sdata .gnu.linkonce.s.*) } > RAM
[16a8616]	213
	214	_edata = .;
	215	PROVIDE (edata = .);
	216
	217	/* Zeroed small data addressed as offsets from r13 */
	218	.sbss : { PROVIDE (__sbss_start = .);
	219	*(.dynsbss)
	220	(.sbss)
	221	(.gnu.linkonce.sb.)
	222	*(.scommon)
	223
	224	/* Avoid empty sdata/sbss area: __eabi would not set up
	225	* r13, which may be important if run-time loading is used
	226	*/
	227	. += 1;
	228
	229	PROVIDE (__SBSS_END__ = .);
	230	PROVIDE (__sbss_end = .);
	231	} > RAM
	232
	233	.plt : { *(.plt) } > RAM
	234	.iplt : { *(.iplt) } > RAM
	235
	236	/* Zeroed large data */
	237	.bss : { PROVIDE (__bss_start = .);
	238	*(.dynbss)
	239	*(.bss)
	240	(.bss.)
	241	(.gnu.linkonce.b)
	242	*(COMMON)
	243
	244	PROVIDE (__bss_end = ALIGN(4));
	245	__bss_size = __bss_end - __bss_start;
	246	} > RAM
	247
	248	__exeend = ALIGN(4);
	249	__rtems_end = .;
	250	. = ALIGN(0x10); /* Align to a cache-line boundary */
	251	PROVIDE(__bsp_ram_start = .);
	252
[715d616]	253	.rtemsstack (NOLOAD) : {
	254	(SORT(.rtemsstack.))
	255	} >RAM
	256
	257	WorkAreaBase = .;
[16a8616]	258
	259	/* The heap comes after the work space */
	260
	261	. = RamBase + RamSize;
	262	PROVIDE(__bsp_ram_end = .);
	263
	264	/* Message area for capturing early printk output */
	265	/* Placed here to be easily findable with a debugger */
[5b822ab]	266	MsgAreaBase = .;
[16a8616]	267	. += MsgAreaSize;
	268
	269	__phy_ram_end = .; /* True end of physical memory */
	270
	271	/DISCARD/ :
	272	{
	273	*(.comment)
	274	}
	275
	276	/* Some configuration constants: Not clear why they're placed here */
	277	__dccr = 0x80000000;
	278	__iccr = 0x80000000;
	279	__sgr = 0x7fffffff;
	280	__vectors = 0;
	281	}

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