1 files changed, 229 insertions, 0 deletions
diff --git a/lldb/source/Plugins/Process/Utility/libunwind/src/unw_getcontext.s b/lldb/source/Plugins/Process/Utility/libunwind/src/unw_getcontext.s
new file mode 100644
index 00000000000..8d3a451fd92
--- /dev/null
+++ b/lldb/source/Plugins/Process/Utility/libunwind/src/unw_getcontext.s
@@ -0,0 +1,229 @@
+
+#if __i386__ || __x86_64__ || __ppc__
+
+	.text
+	.globl _unw_getcontext
+_unw_getcontext:
+
+#endif  // __i386__ || __x86_64__ || __ppc__
+
+
+#if __i386__
+
+#
+# extern int unw_getcontext(unw_context_t* thread_state)
+#
+# On entry: 
+#	+					    +
+#   +-----------------------+
+#	+ thread_state pointer  +
+#   +-----------------------+
+#	+ return address	    +
+#   +-----------------------+   <-- SP
+#	+					    +
+#
+	push	%eax
+	movl	8(%esp), %eax
+	movl	%ebx,  4(%eax)
+	movl	%ecx,  8(%eax)
+	movl	%edx, 12(%eax)
+	movl	%edi, 16(%eax)
+	movl	%esi, 20(%eax)
+	movl	%ebp, 24(%eax)
+	movl	%esp, %edx
+	addl	$8, %edx
+	movl	%edx, 28(%eax)	# store what sp was at call site as esp
+	# skip ss
+	# skip eflags
+	movl	4(%esp), %edx
+	movl	%edx, 40(%eax)	# store return address as eip
+	# skip cs
+	# skip ds
+	# skip es
+	# skip fs
+	# skip gs
+	movl	(%esp), %edx
+	movl	%edx, (%eax)	# store original eax
+	popl	%eax
+	xorl	%eax, %eax		# return UNW_ESUCCESS
+	ret
+
+#elif __x86_64__
+
+#
+# extern int unw_getcontext(unw_context_t* thread_state)
+#
+# On entry: 
+#	thread_state pointer is in rdi
+#
+	movq	%rax,   (%rdi)
+	movq	%rbx,  8(%rdi)
+	movq	%rcx, 16(%rdi)
+	movq	%rdx, 24(%rdi)
+	movq	%rdi, 32(%rdi)
+	movq	%rsi, 40(%rdi)
+	movq	%rbp, 48(%rdi)
+	movq	%rsp, 56(%rdi)
+	addq	$8,   56(%rdi)
+	movq	%r8,  64(%rdi)
+	movq	%r9,  72(%rdi)
+	movq	%r10, 80(%rdi)
+	movq	%r11, 88(%rdi)
+	movq	%r12, 96(%rdi)
+	movq	%r13,104(%rdi)
+	movq	%r14,112(%rdi)
+	movq	%r15,120(%rdi)
+	movq	(%rsp),%rsi
+	movq	%rsi,128(%rdi) # store return address as rip
+	# skip rflags
+	# skip cs
+	# skip fs
+	# skip gs
+	xorl	%eax, %eax		# return UNW_ESUCCESS
+	ret
+
+#elif __ppc__
+
+;
+; extern int unw_getcontext(unw_context_t* thread_state)
+;
+; On entry: 
+;	thread_state pointer is in r3
+;
+	stw		r0,  8(r3)	 
+	mflr	r0
+	stw		r0,  0(r3)	; store lr as ssr0
+	stw		r1, 12(r3)	
+	stw		r2, 16(r3)	
+	stw		r3, 20(r3)	
+	stw		r4, 24(r3)	
+	stw		r5, 28(r3)	
+	stw		r6, 32(r3)	
+	stw		r7, 36(r3)	
+	stw		r8, 40(r3)	
+	stw		r9, 44(r3)	
+	stw	   r10, 48(r3)	
+	stw	   r11, 52(r3)	
+	stw	   r12, 56(r3)	
+	stw	   r13, 60(r3)	
+	stw	   r14, 64(r3)	
+	stw	   r15, 68(r3)	
+	stw	   r16, 72(r3)	
+	stw	   r17, 76(r3)	
+	stw	   r18, 80(r3)	
+	stw	   r19, 84(r3)	
+	stw	   r20, 88(r3)	
+	stw	   r21, 92(r3)	
+	stw	   r22, 96(r3)	
+	stw	   r23,100(r3)	
+	stw	   r24,104(r3)	
+	stw	   r25,108(r3)	
+	stw	   r26,112(r3)	
+	stw	   r27,116(r3)	
+	stw	   r28,120(r3)	
+	stw	   r29,124(r3)	
+	stw	   r30,128(r3)	
+	stw	   r31,132(r3)	
+	
+	; save VRSave register
+	mfspr	r0,256
+	stw		r0,156(r3)	
+	; save CR registers
+	mfcr	r0
+	stw		r0,136(r3)	
+	; save CTR register
+	mfctr	r0
+	stw		r0,148(r3)	
+
+	; save float registers
+	stfd		f0, 160(r3)
+	stfd		f1, 168(r3)
+	stfd		f2, 176(r3)
+	stfd		f3, 184(r3)
+	stfd		f4, 192(r3)
+	stfd		f5, 200(r3)
+	stfd		f6, 208(r3)
+	stfd		f7, 216(r3)
+	stfd		f8, 224(r3)
+	stfd		f9, 232(r3)
+	stfd		f10,240(r3)
+	stfd		f11,248(r3)
+	stfd		f12,256(r3)
+	stfd		f13,264(r3)
+	stfd		f14,272(r3)
+	stfd		f15,280(r3)
+	stfd		f16,288(r3)
+	stfd		f17,296(r3)
+	stfd		f18,304(r3)
+	stfd		f19,312(r3)
+	stfd		f20,320(r3)
+	stfd		f21,328(r3)
+	stfd		f22,336(r3)
+	stfd		f23,344(r3)
+	stfd		f24,352(r3)
+	stfd		f25,360(r3)
+	stfd		f26,368(r3)
+	stfd		f27,376(r3)
+	stfd		f28,384(r3)
+	stfd		f29,392(r3)
+	stfd		f30,400(r3)
+	stfd		f31,408(r3)
+
+
+	; save vector registers
+
+	subi	r4,r1,16
+	rlwinm	r4,r4,0,0,27	; mask low 4-bits
+	; r4 is now a 16-byte aligned pointer into the red zone
+
+#define SAVE_VECTOR_UNALIGNED(_vec, _offset) \
+	stvx	_vec,0,r4			@\
+	lwz		r5, 0(r4)			@\
+	stw		r5, _offset(r3)		@\
+	lwz		r5, 4(r4)			@\
+	stw		r5, _offset+4(r3)	@\
+	lwz		r5, 8(r4)			@\
+	stw		r5, _offset+8(r3)	@\
+	lwz		r5, 12(r4)			@\
+	stw		r5, _offset+12(r3)
+	
+	SAVE_VECTOR_UNALIGNED( v0, 424+0x000)
+	SAVE_VECTOR_UNALIGNED( v1, 424+0x010)
+	SAVE_VECTOR_UNALIGNED( v2, 424+0x020)
+	SAVE_VECTOR_UNALIGNED( v3, 424+0x030)
+	SAVE_VECTOR_UNALIGNED( v4, 424+0x040)
+	SAVE_VECTOR_UNALIGNED( v5, 424+0x050)
+	SAVE_VECTOR_UNALIGNED( v6, 424+0x060)
+	SAVE_VECTOR_UNALIGNED( v7, 424+0x070)
+	SAVE_VECTOR_UNALIGNED( v8, 424+0x080)
+	SAVE_VECTOR_UNALIGNED( v9, 424+0x090)
+	SAVE_VECTOR_UNALIGNED(v10, 424+0x0A0)
+	SAVE_VECTOR_UNALIGNED(v11, 424+0x0B0)
+	SAVE_VECTOR_UNALIGNED(v12, 424+0x0C0)
+	SAVE_VECTOR_UNALIGNED(v13, 424+0x0D0)
+	SAVE_VECTOR_UNALIGNED(v14, 424+0x0E0)
+	SAVE_VECTOR_UNALIGNED(v15, 424+0x0F0)
+	SAVE_VECTOR_UNALIGNED(v16, 424+0x100)
+	SAVE_VECTOR_UNALIGNED(v17, 424+0x110)
+	SAVE_VECTOR_UNALIGNED(v18, 424+0x120)
+	SAVE_VECTOR_UNALIGNED(v19, 424+0x130)
+	SAVE_VECTOR_UNALIGNED(v20, 424+0x140)
+	SAVE_VECTOR_UNALIGNED(v21, 424+0x150)
+	SAVE_VECTOR_UNALIGNED(v22, 424+0x160)
+	SAVE_VECTOR_UNALIGNED(v23, 424+0x170)
+	SAVE_VECTOR_UNALIGNED(v24, 424+0x180)
+	SAVE_VECTOR_UNALIGNED(v25, 424+0x190)
+	SAVE_VECTOR_UNALIGNED(v26, 424+0x1A0)
+	SAVE_VECTOR_UNALIGNED(v27, 424+0x1B0)
+	SAVE_VECTOR_UNALIGNED(v28, 424+0x1C0)
+	SAVE_VECTOR_UNALIGNED(v29, 424+0x1D0)
+	SAVE_VECTOR_UNALIGNED(v30, 424+0x1E0)
+	SAVE_VECTOR_UNALIGNED(v31, 424+0x1F0)
+
+	li	r3, 0		; return UNW_ESUCCESS
+	blr
+
+
+
+#endif
+