path: root/package/boot/uboot-fritz4040/patches/100-private-libgcc.patch

--- a/arch/arm/lib/Makefile
+++ b/arch/arm/lib/Makefile
@@ -26,7 +26,6 @@ include $(TOPDIR)/config.mk
 LIB	= $(obj)lib$(ARCH).o
 LIBGCC	= $(obj)libgcc.o
 
-ifndef CONFIG_SPL_BUILD
 GLSOBJS	+= _ashldi3.o
 GLSOBJS	+= _ashrdi3.o
 GLSOBJS	+= _divsi3.o
@@ -34,9 +33,11 @@ GLSOBJS	+= _lshrdi3.o
 GLSOBJS	+= _modsi3.o
 GLSOBJS	+= _udivsi3.o
 GLSOBJS	+= _umodsi3.o
+GLSOBJS	+= uldivmod.o
 
 GLCOBJS	+= div0.o
 
+ifndef CONFIG_SPL_BUILD
 COBJS-y	+= board.o
 COBJS-y	+= bootm.o
 COBJS-$(CONFIG_SYS_L2_PL310) += cache-pl310.o
--- /dev/null
+++ b/arch/arm/lib/uldivmod.S
@@ -0,0 +1,249 @@
+/*
+ * Copyright 2010, Google Inc.
+ *
+ * Brought in from coreboot uldivmod.S
+ *
+ * SPDX-License-Identifier:     GPL-2.0
+ */
+
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+
+/*
+ * A, Q = r0 + (r1 << 32)
+ * B, R = r2 + (r3 << 32)
+ * A / B = Q ... R
+ */
+
+#define ARM(x...)   x
+#define THUMB(x...)
+
+A_0	.req	r0
+A_1	.req	r1
+B_0	.req	r2
+B_1	.req	r3
+C_0	.req	r4
+C_1	.req	r5
+D_0	.req	r6
+D_1	.req	r7
+
+Q_0	.req	r0
+Q_1	.req	r1
+R_0	.req	r2
+R_1	.req	r3
+
+THUMB(
+TMP	.req	r8
+)
+
+.pushsection .text.__aeabi_uldivmod, "ax"
+ENTRY(__aeabi_uldivmod)
+
+	stmfd	sp!, {r4, r5, r6, r7, THUMB(TMP,) lr}
+	@ Test if B == 0
+	orrs	ip, B_0, B_1		@ Z set -> B == 0
+	beq	L_div_by_0
+	@ Test if B is power of 2: (B & (B - 1)) == 0
+	subs	C_0, B_0, #1
+	sbc	C_1, B_1, #0
+	tst	C_0, B_0
+	tsteq	B_1, C_1
+	beq	L_pow2
+	@ Test if A_1 == B_1 == 0
+	orrs	ip, A_1, B_1
+	beq	L_div_32_32
+
+L_div_64_64:
+/* CLZ only exists in ARM architecture version 5 and above. */
+#ifdef HAVE_CLZ
+	mov	C_0, #1
+	mov	C_1, #0
+	@ D_0 = clz A
+	teq	A_1, #0
+	clz	D_0, A_1
+	clzeq	ip, A_0
+	addeq	D_0, D_0, ip
+	@ D_1 = clz B
+	teq	B_1, #0
+	clz	D_1, B_1
+	clzeq	ip, B_0
+	addeq	D_1, D_1, ip
+	@ if clz B - clz A > 0
+	subs	D_0, D_1, D_0
+	bls	L_done_shift
+	@ B <<= (clz B - clz A)
+	subs	D_1, D_0, #32
+	rsb	ip, D_0, #32
+	movmi	B_1, B_1, lsl D_0
+ARM(	orrmi	B_1, B_1, B_0, lsr ip	)
+THUMB(	lsrmi	TMP, B_0, ip		)
+THUMB(	orrmi	B_1, B_1, TMP		)
+	movpl	B_1, B_0, lsl D_1
+	mov	B_0, B_0, lsl D_0
+	@ C = 1 << (clz B - clz A)
+	movmi	C_1, C_1, lsl D_0
+ARM(	orrmi	C_1, C_1, C_0, lsr ip	)
+THUMB(	lsrmi	TMP, C_0, ip		)
+THUMB(	orrmi	C_1, C_1, TMP		)
+	movpl	C_1, C_0, lsl D_1
+	mov	C_0, C_0, lsl D_0
+L_done_shift:
+	mov	D_0, #0
+	mov	D_1, #0
+	@ C: current bit; D: result
+#else
+	@ C: current bit; D: result
+	mov	C_0, #1
+	mov	C_1, #0
+	mov	D_0, #0
+	mov	D_1, #0
+L_lsl_4:
+	cmp	B_1, #0x10000000
+	cmpcc	B_1, A_1
+	cmpeq	B_0, A_0
+	bcs	L_lsl_1
+	@ B <<= 4
+	mov	B_1, B_1, lsl #4
+	orr	B_1, B_1, B_0, lsr #28
+	mov	B_0, B_0, lsl #4
+	@ C <<= 4
+	mov	C_1, C_1, lsl #4
+	orr	C_1, C_1, C_0, lsr #28
+	mov	C_0, C_0, lsl #4
+	b	L_lsl_4
+L_lsl_1:
+	cmp	B_1, #0x80000000
+	cmpcc	B_1, A_1
+	cmpeq	B_0, A_0
+	bcs	L_subtract
+	@ B <<= 1
+	mov	B_1, B_1, lsl #1
+	orr	B_1, B_1, B_0, lsr #31
+	mov	B_0, B_0, lsl #1
+	@ C <<= 1
+	mov	C_1, C_1, lsl #1
+	orr	C_1, C_1, C_0, lsr #31
+	mov	C_0, C_0, lsl #1
+	b	L_lsl_1
+#endif
+L_subtract:
+	@ if A >= B
+	cmp	A_1, B_1
+	cmpeq	A_0, B_0
+	bcc	L_update
+	@ A -= B
+	subs	A_0, A_0, B_0
+	sbc	A_1, A_1, B_1
+	@ D |= C
+	orr	D_0, D_0, C_0
+	orr	D_1, D_1, C_1
+L_update:
+	@ if A == 0: break
+	orrs	ip, A_1, A_0
+	beq	L_exit
+	@ C >>= 1
+	movs	C_1, C_1, lsr #1
+	movs	C_0, C_0, rrx
+	@ if C == 0: break
+	orrs	ip, C_1, C_0
+	beq	L_exit
+	@ B >>= 1
+	movs	B_1, B_1, lsr #1
+	mov	B_0, B_0, rrx
+	b	L_subtract
+L_exit:
+	@ Note: A, B & Q, R are aliases
+	mov	R_0, A_0
+	mov	R_1, A_1
+	mov	Q_0, D_0
+	mov	Q_1, D_1
+	ldmfd	sp!, {r4, r5, r6, r7, THUMB(TMP,) pc}
+
+L_div_32_32:
+	@ Note:	A_0 &	r0 are aliases
+	@	Q_1	r1
+	mov	r1, B_0
+	bl	__aeabi_uidivmod
+	mov	R_0, r1
+	mov	R_1, #0
+	mov	Q_1, #0
+	ldmfd	sp!, {r4, r5, r6, r7, THUMB(TMP,) pc}
+
+L_pow2:
+#ifdef HAVE_CLZ
+	@ Note: A, B and Q, R are aliases
+	@ R = A & (B - 1)
+	and	C_0, A_0, C_0
+	and	C_1, A_1, C_1
+	@ Q = A >> log2(B)
+	@ Note: B must not be 0 here!
+	clz	D_0, B_0
+	add	D_1, D_0, #1
+	rsbs	D_0, D_0, #31
+	bpl	L_1
+	clz	D_0, B_1
+	rsb	D_0, D_0, #31
+	mov	A_0, A_1, lsr D_0
+	add	D_0, D_0, #32
+L_1:
+	movpl	A_0, A_0, lsr D_0
+ARM(	orrpl	A_0, A_0, A_1, lsl D_1	)
+THUMB(	lslpl	TMP, A_1, D_1		)
+THUMB(	orrpl	A_0, A_0, TMP		)
+	mov	A_1, A_1, lsr D_0
+	@ Mov back C to R
+	mov	R_0, C_0
+	mov	R_1, C_1
+	ldmfd	sp!, {r4, r5, r6, r7, THUMB(TMP,) pc}
+#else
+	@ Note: A, B and Q, R are aliases
+	@ R = A & (B - 1)
+	and	C_0, A_0, C_0
+	and	C_1, A_1, C_1
+	@ Q = A >> log2(B)
+	@ Note: B must not be 0 here!
+	@ Count the leading zeroes in B.
+	mov	D_0, #0
+	orrs	B_0, B_0, B_0
+	@ If B is greater than 1 << 31, divide A and B by 1 << 32.
+	moveq	A_0, A_1
+	moveq	A_1, #0
+	moveq	B_0, B_1
+	@ Count the remaining leading zeroes in B.
+	movs	B_1, B_0, lsl #16
+	addeq	D_0, #16
+	moveq	B_0, B_0, lsr #16
+	tst	B_0, #0xff
+	addeq	D_0, #8
+	moveq	B_0, B_0, lsr #8
+	tst	B_0, #0xf
+	addeq	D_0, #4
+	moveq	B_0, B_0, lsr #4
+	tst	B_0, #0x3
+	addeq	D_0, #2
+	moveq	B_0, B_0, lsr #2
+	tst	B_0, #0x1
+	addeq	D_0, #1
+	@ Shift A to the right by the appropriate amount.
+	rsb	D_1, D_0, #32
+	mov	Q_0, A_0, lsr D_0
+ ARM(   orr     Q_0, Q_0, A_1, lsl D_1	)
+ THUMB(	lsl	A_1, D_1		)
+ THUMB(	orr	Q_0, A_1		)
+	mov	Q_1, A_1, lsr D_0
+	@ Move C to R
+	mov	R_0, C_0
+	mov	R_1, C_1
+	ldmfd	sp!, {r4, r5, r6, r7, THUMB(TMP,) pc}
+#endif
+
+L_div_by_0:
+	bl	__div0
+	@ As wrong as it could be
+	mov	Q_0, #0
+	mov	Q_1, #0
+	mov	R_0, #0
+	mov	R_1, #0
+	ldmfd	sp!, {r4, r5, r6, r7, THUMB(TMP,) pc}
+ENDPROC(__aeabi_uldivmod)
+.popsection