xref: /optee_os/ta/arch/arm/ta.ld.S (revision bc8fc882f344e6aa6b205c1859cb4537fa81a306)

#ifdef ARM32
OUTPUT_FORMAT("elf32-littlearm")
OUTPUT_ARCH(arm)
#define MCOUNT_SYM __gnu_mcount_nc
/*
 * This magic value corresponds to the size requested by
 * libutee/arch/arm/gprof/gprof.c
 */
#define GPROF_BUF_MULT(x) ((x) * 136) / 100
#endif
#ifdef ARM64
OUTPUT_FORMAT("elf64-littleaarch64")
OUTPUT_ARCH(aarch64)
#define MCOUNT_SYM _mcount
#define GPROF_BUF_MULT(x) ((x) * 177) / 100
#endif

PHDRS {
	/*
	 * Exec and rodata headers are hard coded to RX and RO
	 * respectively. This is needed because the binary is relocatable
	 * and the linker would automatically make any header writeable
	 * that need to be updated during relocation.
	 */
	exec PT_LOAD FLAGS (5);		/* RX */
	rodata PT_LOAD FLAGS (4);	/* RO */
	rwdata PT_LOAD;
	dyn PT_DYNAMIC;
}

SECTIONS {
	.ta_head : {*(.ta_head)} :exec
	.text : {
		__text_start = .;
		*(.text .text.*)
		*(.stub)
		*(.glue_7)
		*(.glue_7t)
		*(.gnu.linkonce.t.*)
		/* Workaround for an erratum in ARM's VFP11 coprocessor */
		*(.vfp11_veneer)
		PROVIDE(MCOUNT_SYM = __utee_mcount);
		__text_end = .;
	}
        .plt : { *(.plt) }

	.eh_frame : { *(.eh_frame) } :rodata
	.rodata : {
		*(.gnu.linkonce.r.*)
		*(.rodata .rodata.*)
	}
	/* .ARM.exidx is sorted, so has to go in its own output section.  */
	.ARM.exidx : { *(.ARM.exidx* .gnu.linkonce.armexidx.*) }
        .ctors : { *(.ctors) }
        .dtors : { *(.dtors) }
	.got : { *(.got.plt) *(.got) }
	.rel.text : { *(.rel.text) *(.rel.gnu.linkonce.t*) }
	.rela.text : { *(.rela.text) *(.rela.gnu.linkonce.t*) }
	.rel.data : { *(.rel.data) *(.rel.gnu.linkonce.d*) }
	.rela.data : { *(.rela.data) *(.rela.gnu.linkonce.d*) }
	.rel.rodata : { *(.rel.rodata) *(.rel.gnu.linkonce.r*) }
	.rela.rodata : { *(.rela.rodata) *(.rela.gnu.linkonce.r*) }
	.rel.dyn : { *(.rel.dyn) }
	.rel.got : { *(.rel.got) }
	.rela.got : { *(.rela.got) }
	.rel.ctors : { *(.rel.ctors) }
	.rela.ctors : { *(.rela.ctors) }
	.rel.dtors : { *(.rel.dtors) }
	.rela.dtors : { *(.rela.dtors) }
	.rel.init : { *(.rel.init) }
	.rela.init : { *(.rela.init) }
	.rel.fini : { *(.rel.fini) }
	.rela.fini : { *(.rela.fini) }
	.rel.bss : { *(.rel.bss) }
	.rela.bss : { *(.rela.bss) }
	.rel.plt : { *(.rel.plt) }
	.rela.plt : { *(.rela.plt) }
	.dynamic : { *(.dynamic) } :dyn :rodata
	.dynsym : { *(.dynsym) } :rodata
	.dynstr : { *(.dynstr) }
	.hash : { *(.hash) }

	/* Page align to allow dropping execute bit for RW data */
	. = ALIGN(4096);

	.data : { *(.data .data.* .gnu.linkonce.d.*) } :rwdata
	.bss : {
		*(.bss .bss.* .gnu.linkonce.b.* COMMON)

		/*
		 * TA profiling with gprof
		 * Reserve some space for the profiling buffer, only if the
		 * TA is instrumented (i.e., some files were built with -pg).
		 * Note that PROVIDE() above defines a symbol only if it is
		 * referenced in the object files.
		 * This also provides a way to detect at runtime if the TA is
		 * instrumented or not.
		 */
		. = ALIGN(8);
		__gprof_buf_start = .;
		. += DEFINED(MCOUNT_SYM) ?
			GPROF_BUF_MULT(__text_end - __text_start) : 0;
		__gprof_buf_end = .;
	}

	/DISCARD/ : { *(.interp) }
}