diff options
Diffstat (limited to 'package/boot/uboot-fritz4040/patches/100-private-libgcc.patch')
| -rw-r--r-- | package/boot/uboot-fritz4040/patches/100-private-libgcc.patch | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/package/boot/uboot-fritz4040/patches/100-private-libgcc.patch b/package/boot/uboot-fritz4040/patches/100-private-libgcc.patch new file mode 100644 index 0000000000..6fec563da4 --- /dev/null +++ b/package/boot/uboot-fritz4040/patches/100-private-libgcc.patch @@ -0,0 +1,274 @@ +--- 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 |