Index: sys/arm/linux/linux_locore.s
===================================================================
--- /dev/null
+++ sys/arm/linux/linux_locore.s
@@ -0,0 +1,137 @@
+/* $FreeBSD$ */
+
+#include "linux_assym.h"			/* system definitions */
+#include <machine/asmacros.h>			/* miscellaneous asm macros */
+
+#include <arm/linux/linux_syscall.h>		/* system call numbers */
+
+#include "assym.s"
+
+/*
+ * To avoid excess stack frame the signal trampoline code emulates
+ * the 'call' instruction.
+ */
+ASENTRY_NP(linux_sigcode)
+	bl	.getip0
+.getip0:
+	mov	lr, pc
+	add	lr, $.startsigcode-.getip0	/* ret address */
+	ldr	r1, [r0], #LINUX_SIGF_HANDLER
+	ldr	r1, [r1]
+	bx	r1
+.startsigcode:
+	mov	r7, $LINUX_SYS_linux_sigreturn	/* linux_sigreturn() */
+	swi	0
+.endsigcode:
+0:	b	0b
+ASEND(linux_sigcode)
+
+ASENTRY_NP(linux_rt_sigcode)
+	ldr	r1, [r0], #LINUX_RT_SIGF_UC
+	ldr	r0, [r1], #LINUX_RT_SIGF_SC
+	bl	.getip1
+.getip1:
+	mov	lr, pc
+	add	lr, $.startrtsigcode-.getip1	/* ret address */
+	ldr	r1, [r0], #LINUX_RT_SIGF_HANDLER
+	ldr	r1, [r1]
+	bx	r1
+.startrtsigcode:
+	mov	r7, $LINUX_SYS_linux_rt_sigreturn	/* linux_rt_sigreturn() */
+	swi	0
+.endrtsigcode:
+0:	b	0b
+ASEND(linux_rt_sigcode)
+
+ASENTRY_NP(linux_vsyscall)
+.startvsyscall:
+	mov r7, r0
+	swi 0
+	mov pc, lr
+.endvsyscall:
+ASEND(linux_vsyscall)
+
+#define do_cfa_expr(offset)                                             \
+	.byte 0x0f;			/* DW_CFA_def_cfa_expression */ \
+	.uleb128 11f-10f;		/*   length */                  \
+10:	.byte 0x74;			/*     DW_OP_breg4 */           \
+	.sleb128 offset;		/*      offset */               \
+	.byte 0x06;			/*     DW_OP_deref */           \
+11:
+
+
+	/* CIE */
+	.section .eh_frame
+	/*.section .eh_frame,"a",@progbits*/
+.LSTARTFRAMEDLSI1:
+	.long .LENDCIEDLSI1-.LSTARTCIEDLSI1
+.LSTARTCIEDLSI1:
+	.long 0					/* CIE ID */
+	.byte 1					/* Version number */
+	.string "zRS"				/* NULL-terminated
+						 * augmentation string
+						 */
+	.uleb128 1				/* Code alignment factor */
+	.sleb128 -4				/* Data alignment factor */
+	.byte 8					/* Return address
+						 * register column
+						 */
+	.uleb128 1				/* Augmentation value length */
+	.byte 0x1b				/* DW_EH_PE_pcrel|DW_EH_PE_sdata4. */
+	.byte 0					/* DW_CFA_nop */
+	.align 4
+.LENDCIEDLSI1:
+
+	/* FDE */
+	.long .LENDFDEDLSI1-.LSTARTFDEDLSI1	/* Length FDE */
+.LSTARTFDEDLSI1:
+	.long .LSTARTFDEDLSI1-.LSTARTFRAMEDLSI1 /* CIE pointer */
+	.long .startsigcode-.			/* PC-relative start address */
+	.long .endsigcode-.startsigcode
+	.uleb128 0				/* Augmentation */
+	do_cfa_expr(LINUX_SIGF_SC-8)
+	.align 4
+.LENDFDEDLSI1:
+
+	.long .LENDFDEDLSI2-.LSTARTFDEDLSI2	/* Length FDE */
+.LSTARTFDEDLSI2:
+	.long .LSTARTFDEDLSI2-.LSTARTFRAMEDLSI1	/* CIE pointer */
+	.long .startrtsigcode-.			/* PC-relative start address */
+	.long .endrtsigcode-.startrtsigcode
+	.uleb128 0				/* Augmentation */
+	do_cfa_expr(LINUX_RT_SIGF_SC-4+LINUX_SC_ESP)
+	.align 4
+.LENDFDEDLSI2:
+	.previous
+
+	.section .eh_frame
+	/*.section .eh_frame,"a",@progbits*/
+.LSTARTFRAMEDLSI2:
+	.long .LENDCIEDLSI2-.LSTARTCIEDLSI2
+.LSTARTCIEDLSI2:
+	.long 0					/* CIE ID */
+	.byte 1					/* Version number */
+	.string "zR"				/* NULL-terminated
+						 * augmentation string
+						 */
+	.uleb128 1				/* Code alignment factor */
+	.sleb128 -4				/* Data alignment factor */
+	.byte 8					/* Return address register column */
+	.uleb128 1				/* Augmentation value length */
+	.byte 0x1b				/* DW_EH_PE_pcrel|DW_EH_PE_sdata4. */
+	.byte 0x0c				/* DW_CFA_def_cfa */
+	.uleb128 4
+	.uleb128 4
+	.byte 0x88				/* DW_CFA_offset, column 0x8 */
+	.uleb128 1
+	.align 4
+.LENDCIEDLSI2:
+	.long .LENDFDEDLSI3-.LSTARTFDEDLSI3 /* Length FDE */
+.LSTARTFDEDLSI3:
+	.long .LSTARTFDEDLSI3-.LSTARTFRAMEDLSI2 /* CIE pointer */
+	.long .startvsyscall-.			/* PC-relative start address */
+	.long .endvsyscall-.startvsyscall
+	.uleb128 0
+	.align 4
+.LENDFDEDLSI3:
+	.previous