[3/7] microblaze: Use libgcc files from lib/

Message ID	20170606191023.24581-4-palmer@dabbelt.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <linux-sh-owner@kernel.org> From: Palmer Dabbelt <palmer@dabbelt.com> To: monstr@monstr.eu To: ralf@linux-mips.org To: liqin.linux@gmail.com To: lennox.wu@gmail.com To: ysato@users.sourceforge.jp To: dalias@libc.org To: davem@davemloft.net To: linux-mips@linux-mips.org To: linux-sh@vger.kernel.org To: sparclinux@vger.kernel.org To: geert@linux-m68k.org To: linux-kernel@vger.kernel.org To: linux-arch@vger.kernel.org Cc: Palmer Dabbelt <palmer@dabbelt.com> Subject: [PATCH 3/7] microblaze: Use libgcc files from lib/ Date: Tue, 6 Jun 2017 12:10:19 -0700 Message-Id: <20170606191023.24581-4-palmer@dabbelt.com> In-Reply-To: <20170606191023.24581-1-palmer@dabbelt.com> References: <20170523220546.16758-1-palmer@dabbelt.com> <20170606191023.24581-1-palmer@dabbelt.com> Sender: linux-sh-owner@vger.kernel.org Precedence: bulk

diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig index 85885a501dce..833487c17996 100644 --- a/arch/microblaze/Kconfig +++ b/arch/microblaze/Kconfig @@ -34,6 +34,12 @@ config MICROBLAZE select TRACING_SUPPORT select VIRT_TO_BUS select CPU_NO_EFFICIENT_FFS + select GENERIC_ASHLDI3 + select GENERIC_ASHRDI3 + select GENERIC_CMPDI2 + select GENERIC_LSHRDI3 + select GENERIC_MULDI3 + select GENERIC_UCMPDI3 config SWAP def_bool n diff --git a/arch/microblaze/lib/Makefile b/arch/microblaze/lib/Makefile index 70c7ae6a3fb5..c9a4d537e2fd 100644 --- a/arch/microblaze/lib/Makefile +++ b/arch/microblaze/lib/Makefile @@ -19,5 +19,4 @@ endif lib-y += uaccess_old.o # libgcc-style stuff needed in the kernel -obj-y += ashldi3.o ashrdi3.o cmpdi2.o divsi3.o lshrdi3.o modsi3.o -obj-y += muldi3.o mulsi3.o ucmpdi2.o udivsi3.o umodsi3.o +obj-y += divsi3.o modsi3.o mulsi3.o udivsi3.o umodsi3.o diff --git a/arch/microblaze/lib/ashldi3.c b/arch/microblaze/lib/ashldi3.c deleted file mode 100644 index 1af904cd972d..000000000000 --- a/arch/microblaze/lib/ashldi3.c +++ /dev/null @@ -1,28 +0,0 @@ -#include <linux/export.h> - -#include "libgcc.h" - -long long __ashldi3(long long u, word_type b) -{ - DWunion uu, w; - word_type bm; - - if (b == 0) - return u; - - uu.ll = u; - bm = 32 - b; - - if (bm <= 0) { - w.s.low = 0; - w.s.high = (unsigned int) uu.s.low << -bm; - } else { - const unsigned int carries = (unsigned int) uu.s.low >> bm; - - w.s.low = (unsigned int) uu.s.low << b; - w.s.high = ((unsigned int) uu.s.high << b) | carries; - } - - return w.ll; -} -EXPORT_SYMBOL(__ashldi3); diff --git a/arch/microblaze/lib/ashrdi3.c b/arch/microblaze/lib/ashrdi3.c deleted file mode 100644 index 32c334c05d04..000000000000 --- a/arch/microblaze/lib/ashrdi3.c +++ /dev/null @@ -1,30 +0,0 @@ -#include <linux/export.h> - -#include "libgcc.h" - -long long __ashrdi3(long long u, word_type b) -{ - DWunion uu, w; - word_type bm; - - if (b == 0) - return u; - - uu.ll = u; - bm = 32 - b; - - if (bm <= 0) { - /* w.s.high = 1..1 or 0..0 */ - w.s.high = - uu.s.high >> 31; - w.s.low = uu.s.high >> -bm; - } else { - const unsigned int carries = (unsigned int) uu.s.high << bm; - - w.s.high = uu.s.high >> b; - w.s.low = ((unsigned int) uu.s.low >> b) | carries; - } - - return w.ll; -} -EXPORT_SYMBOL(__ashrdi3); diff --git a/arch/microblaze/lib/cmpdi2.c b/arch/microblaze/lib/cmpdi2.c deleted file mode 100644 index 67abc9ac1bd4..000000000000 --- a/arch/microblaze/lib/cmpdi2.c +++ /dev/null @@ -1,26 +0,0 @@ -#include <linux/export.h> - -#include "libgcc.h" - -word_type __cmpdi2(long long a, long long b) -{ - const DWunion au = { - .ll = a - }; - const DWunion bu = { - .ll = b - }; - - if (au.s.high < bu.s.high) - return 0; - else if (au.s.high > bu.s.high) - return 2; - - if ((unsigned int) au.s.low < (unsigned int) bu.s.low) - return 0; - else if ((unsigned int) au.s.low > (unsigned int) bu.s.low) - return 2; - - return 1; -} -EXPORT_SYMBOL(__cmpdi2); diff --git a/arch/microblaze/lib/libgcc.h b/arch/microblaze/lib/libgcc.h deleted file mode 100644 index ab077ef7e14b..000000000000 --- a/arch/microblaze/lib/libgcc.h +++ /dev/null @@ -1,32 +0,0 @@ -#ifndef __ASM_LIBGCC_H -#define __ASM_LIBGCC_H - -#include <asm/byteorder.h> - -typedef int word_type __attribute__ ((mode (__word__))); - -#ifdef __BIG_ENDIAN -struct DWstruct { - int high, low; -}; -#elif defined(__LITTLE_ENDIAN) -struct DWstruct { - int low, high; -}; -#else -#error I feel sick. -#endif - -typedef union { - struct DWstruct s; - long long ll; -} DWunion; - -extern long long __ashldi3(long long u, word_type b); -extern long long __ashrdi3(long long u, word_type b); -extern word_type __cmpdi2(long long a, long long b); -extern long long __lshrdi3(long long u, word_type b); -extern long long __muldi3(long long u, long long v); -extern word_type __ucmpdi2(unsigned long long a, unsigned long long b); - -#endif /* __ASM_LIBGCC_H */ diff --git a/arch/microblaze/lib/lshrdi3.c b/arch/microblaze/lib/lshrdi3.c deleted file mode 100644 index adcb253f11c8..000000000000 --- a/arch/microblaze/lib/lshrdi3.c +++ /dev/null @@ -1,28 +0,0 @@ -#include <linux/export.h> - -#include "libgcc.h" - -long long __lshrdi3(long long u, word_type b) -{ - DWunion uu, w; - word_type bm; - - if (b == 0) - return u; - - uu.ll = u; - bm = 32 - b; - - if (bm <= 0) { - w.s.high = 0; - w.s.low = (unsigned int) uu.s.high >> -bm; - } else { - const unsigned int carries = (unsigned int) uu.s.high << bm; - - w.s.high = (unsigned int) uu.s.high >> b; - w.s.low = ((unsigned int) uu.s.low >> b) | carries; - } - - return w.ll; -} -EXPORT_SYMBOL(__lshrdi3); diff --git a/arch/microblaze/lib/muldi3.c b/arch/microblaze/lib/muldi3.c deleted file mode 100644 index a3f9a03acdcd..000000000000 --- a/arch/microblaze/lib/muldi3.c +++ /dev/null @@ -1,57 +0,0 @@ -#include <linux/export.h> - -#include "libgcc.h" - -#define W_TYPE_SIZE 32 - -#define __ll_B ((unsigned long) 1 << (W_TYPE_SIZE / 2)) -#define __ll_lowpart(t) ((unsigned long) (t) & (__ll_B - 1)) -#define __ll_highpart(t) ((unsigned long) (t) >> (W_TYPE_SIZE / 2)) - -/* If we still don't have umul_ppmm, define it using plain C. */ -#if !defined(umul_ppmm) -#define umul_ppmm(w1, w0, u, v) \ - do { \ - unsigned long __x0, __x1, __x2, __x3; \ - unsigned short __ul, __vl, __uh, __vh; \ - \ - __ul = __ll_lowpart(u); \ - __uh = __ll_highpart(u); \ - __vl = __ll_lowpart(v); \ - __vh = __ll_highpart(v); \ - \ - __x0 = (unsigned long) __ul * __vl; \ - __x1 = (unsigned long) __ul * __vh; \ - __x2 = (unsigned long) __uh * __vl; \ - __x3 = (unsigned long) __uh * __vh; \ - \ - __x1 += __ll_highpart(__x0); /* this can't give carry */\ - __x1 += __x2; /* but this indeed can */ \ - if (__x1 < __x2) /* did we get it? */ \ - __x3 += __ll_B; /* yes, add it in the proper pos */ \ - \ - (w1) = __x3 + __ll_highpart(__x1); \ - (w0) = __ll_lowpart(__x1) * __ll_B + __ll_lowpart(__x0);\ - } while (0) -#endif - -#if !defined(__umulsidi3) -#define __umulsidi3(u, v) ({ \ - DWunion __w; \ - umul_ppmm(__w.s.high, __w.s.low, u, v); \ - __w.ll; \ - }) -#endif - -long long __muldi3(long long u, long long v) -{ - const DWunion uu = {.ll = u}; - const DWunion vv = {.ll = v}; - DWunion w = {.ll = __umulsidi3(uu.s.low, vv.s.low)}; - - w.s.high += ((unsigned long) uu.s.low * (unsigned long) vv.s.high - + (unsigned long) uu.s.high * (unsigned long) vv.s.low); - - return w.ll; -} -EXPORT_SYMBOL(__muldi3); diff --git a/arch/microblaze/lib/ucmpdi2.c b/arch/microblaze/lib/ucmpdi2.c deleted file mode 100644 index d05f1585121c..000000000000 --- a/arch/microblaze/lib/ucmpdi2.c +++ /dev/null @@ -1,20 +0,0 @@ -#include <linux/export.h> - -#include "libgcc.h" - -word_type __ucmpdi2(unsigned long long a, unsigned long long b) -{ - const DWunion au = {.ll = a}; - const DWunion bu = {.ll = b}; - - if ((unsigned int) au.s.high < (unsigned int) bu.s.high) - return 0; - else if ((unsigned int) au.s.high > (unsigned int) bu.s.high) - return 2; - if ((unsigned int) au.s.low < (unsigned int) bu.s.low) - return 0; - else if ((unsigned int) au.s.low > (unsigned int) bu.s.low) - return 2; - return 1; -} -EXPORT_SYMBOL(__ucmpdi2);

[3/7] microblaze: Use libgcc files from lib/

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