From 354296efccfd14107c204c81bd3fe436a2278fa9 Mon Sep 17 00:00:00 2001 From: Paulo Flabiano Smorigo Date: Wed, 17 Sep 2014 14:44:30 -0300 Subject: Skip libgcc dependency for powerpc * configure.ac: Add conditions to avoid libgcc dependency. * Makefile.am: Likewise. * Makefile.core.def: Include compiler-rt.S and compiler-rt.c. * compiler-rt.c: New file. * compiler-rt.S: Likewise. * compiler-rt.h: Likewise. Also-By: Brent Baude Also-By: Vladimir 'phcoder' Serbinenko Origin: other, https://lists.gnu.org/archive/html/grub-devel/2014-09/msg00021.html Last-Update: 2014-09-19 Patch-Name: ppc64el-skip-libgcc.patch --- configure.ac | 10 ++- grub-core/Makefile.am | 1 + grub-core/Makefile.core.def | 2 + grub-core/kern/compiler-rt.c | 166 +++++++++++++++++++++++++++++++++++ grub-core/kern/powerpc/compiler-rt.S | 130 +++++++++++++++++++++++++++ include/grub/compiler-rt.h | 82 +++++++++++++++++ 6 files changed, 387 insertions(+), 4 deletions(-) create mode 100644 grub-core/kern/compiler-rt.c create mode 100644 grub-core/kern/powerpc/compiler-rt.S create mode 100644 include/grub/compiler-rt.h diff --git a/configure.ac b/configure.ac index c21307c..5ce3caf 100644 --- a/configure.ac +++ b/configure.ac @@ -1022,7 +1022,7 @@ else CFLAGS="$TARGET_CFLAGS -nostdlib -Wno-error" fi CPPFLAGS="$TARGET_CPPFLAGS" -if test x$target_cpu = xi386 || test x$target_cpu = xx86_64 || test "x$grub_cv_cc_target_clang" = xyes ; then +if test x$target_cpu = xi386 || test x$target_cpu = xx86_64 || test x$target_cpu = xpowerpc || test "x$grub_cv_cc_target_clang" = xyes; then TARGET_LIBGCC= else TARGET_LIBGCC=-lgcc @@ -1040,8 +1040,10 @@ fi CFLAGS="$TARGET_CFLAGS -nostdlib $DEFSYM" fi -# Check for libgcc symbols -AC_CHECK_FUNCS(__bswapsi2 __bswapdi2 __ashldi3 __ashrdi3 __lshrdi3 __ucmpdi2 _restgpr_14_x) +if ! test x$target_cpu = xpowerpc; then + # Check for libgcc symbols + AC_CHECK_FUNCS(__bswapsi2 __bswapdi2 __ashldi3 __ashrdi3 __lshrdi3 __ucmpdi2 _restgpr_14_x) +fi if test "x$TARGET_APPLE_LINKER" = x1 ; then CFLAGS="$TARGET_CFLAGS -nostdlib -static" @@ -1658,7 +1660,7 @@ if test x"$enable_werror" != xno ; then HOST_CFLAGS="$HOST_CFLAGS -Werror" fi -if test "x$grub_cv_cc_target_clang" = xno; then +if test "x$grub_cv_cc_target_clang" = xno && test x$target_cpu != xpowerpc; then TARGET_LDFLAGS_STATIC_LIBGCC="-static-libgcc" else TARGET_LDFLAGS_STATIC_LIBGCC= diff --git a/grub-core/Makefile.am b/grub-core/Makefile.am index 1b3142d..eab481c 100644 --- a/grub-core/Makefile.am +++ b/grub-core/Makefile.am @@ -74,6 +74,7 @@ KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/i18n.h KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/kernel.h KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/list.h KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/misc.h +KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/compiler-rt.h KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/mm.h KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/parser.h KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/partition.h diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def index 6a47ee1..223fca7 100644 --- a/grub-core/Makefile.core.def +++ b/grub-core/Makefile.core.def @@ -132,6 +132,7 @@ kernel = { common = kern/rescue_reader.c; common = kern/term.c; + noemu = kern/compiler-rt.c; noemu = kern/mm.c; noemu = kern/time.c; noemu = kern/generic/millisleep.c; @@ -252,6 +253,7 @@ kernel = { powerpc_ieee1275 = kern/powerpc/cache.S; powerpc_ieee1275 = kern/powerpc/dl.c; + powerpc_ieee1275 = kern/powerpc/compiler-rt.S; sparc64_ieee1275 = kern/sparc64/cache.S; sparc64_ieee1275 = kern/sparc64/dl.c; diff --git a/grub-core/kern/compiler-rt.c b/grub-core/kern/compiler-rt.c new file mode 100644 index 0000000..42689c0 --- /dev/null +++ b/grub-core/kern/compiler-rt.c @@ -0,0 +1,166 @@ +/* compiler-rt.c - compiler helpers. */ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010-2014 Free Software Foundation, Inc. + * + * GRUB is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * GRUB is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GRUB. If not, see . + */ + +#include +#include + +#if defined (__powerpc__) + +union component64 +{ + grub_uint64_t full; + struct + { +#ifdef GRUB_CPU_WORDS_BIGENDIAN + grub_uint32_t high; + grub_uint32_t low; +#else + grub_uint32_t low; + grub_uint32_t high; +#endif + }; +}; + +/* Based on libgcc2.c from gcc suite. */ +grub_uint64_t +__lshrdi3 (grub_uint64_t u, int b) +{ + if (b == 0) + return u; + + const union component64 uu = {.full = u}; + const int bm = 32 - b; + union component64 w; + + if (bm <= 0) + { + w.high = 0; + w.low = (grub_uint32_t) uu.high >> -bm; + } + else + { + const grub_uint32_t carries = (grub_uint32_t) uu.high << bm; + + w.high = (grub_uint32_t) uu.high >> b; + w.low = ((grub_uint32_t) uu.low >> b) | carries; + } + + return w.full; +} + +/* Based on libgcc2.c from gcc suite. */ +grub_uint64_t +__ashrdi3 (grub_uint64_t u, int b) +{ + if (b == 0) + return u; + + const union component64 uu = {.full = u}; + const int bm = 32 - b; + union component64 w; + + if (bm <= 0) + { + /* w.high = 1..1 or 0..0 */ + w.high = uu.high >> (32 - 1); + w.low = uu.high >> -bm; + } + else + { + const grub_uint32_t carries = (grub_uint32_t) uu.high << bm; + + w.high = uu.high >> b; + w.low = ((grub_uint32_t) uu.low >> b) | carries; + } + + return w.full; +} + +/* Based on libgcc2.c from gcc suite. */ +grub_uint64_t +__ashldi3 (grub_uint64_t u, int b) +{ + if (b == 0) + return u; + + const union component64 uu = {.full = u}; + const int bm = 32 - b; + union component64 w; + + if (bm <= 0) + { + w.low = 0; + w.high = (grub_uint32_t) uu.low << -bm; + } + else + { + const grub_uint32_t carries = (grub_uint32_t) uu.low >> bm; + + w.low = (grub_uint32_t) uu.low << b; + w.high = ((grub_uint32_t) uu.high << b) | carries; + } + + return w.full; +} + +/* Based on libgcc2.c from gcc suite. */ +int +__ucmpdi2 (grub_uint64_t a, grub_uint64_t b) +{ + union component64 ac, bc; + ac.full = a; + bc.full = b; + + if (ac.high < bc.high) + return 0; + else if (ac.high > bc.high) + return 2; + + if (ac.low < bc.low) + return 0; + else if (ac.low > bc.low) + return 2; + return 1; +} + +/* Based on libgcc2.c from gcc suite. */ +grub_uint32_t +__bswapsi2 (grub_uint32_t u) +{ + return ((((u) & 0xff000000) >> 24) + | (((u) & 0x00ff0000) >> 8) + | (((u) & 0x0000ff00) << 8) + | (((u) & 0x000000ff) << 24)); +} + +/* Based on libgcc2.c from gcc suite. */ +grub_uint64_t +__bswapdi2 (grub_uint64_t u) +{ + return ((((u) & 0xff00000000000000ull) >> 56) + | (((u) & 0x00ff000000000000ull) >> 40) + | (((u) & 0x0000ff0000000000ull) >> 24) + | (((u) & 0x000000ff00000000ull) >> 8) + | (((u) & 0x00000000ff000000ull) << 8) + | (((u) & 0x0000000000ff0000ull) << 24) + | (((u) & 0x000000000000ff00ull) << 40) + | (((u) & 0x00000000000000ffull) << 56)); +} + +#endif diff --git a/grub-core/kern/powerpc/compiler-rt.S b/grub-core/kern/powerpc/compiler-rt.S new file mode 100644 index 0000000..63e3a0d --- /dev/null +++ b/grub-core/kern/powerpc/compiler-rt.S @@ -0,0 +1,130 @@ +/* + * Special support for eabi and SVR4 + * + * Copyright (C) 1995-2014 Free Software Foundation, Inc. + * Written By Michael Meissner + * 64-bit support written by David Edelsohn + * + * This file is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 3, or (at your option) any + * later version. + * + * This file is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * Under Section 7 of GPL version 3, you are granted additional + * permissions described in the GCC Runtime Library Exception, version + * 3.1, as published by the Free Software Foundation. + * + * You should have received a copy of the GNU General Public License and + * a copy of the GCC Runtime Library Exception along with this program; + * see the files COPYING3 and COPYING.RUNTIME respectively. If not, see + * . + */ + +/* Do any initializations needed for the eabi environment */ + +#include +#include + + .section ".text" + +#define CFI_RESTORE(reg) .cfi_restore reg +#define CFI_OFFSET(reg, off) .cfi_offset reg, off +#define CFI_DEF_CFA_REGISTER(reg) .cfi_def_cfa_register reg +#define CFI_STARTPROC .cfi_startproc +#define CFI_ENDPROC .cfi_endproc + +/* Routines for restoring integer registers, called by the compiler. */ +/* Called with r11 pointing to the stack header word of the caller of the */ +/* function, just beyond the end of the integer restore area. */ + +CFI_STARTPROC +CFI_DEF_CFA_REGISTER (11) +CFI_OFFSET (65, 4) +CFI_OFFSET (14, -72) +CFI_OFFSET (15, -68) +CFI_OFFSET (16, -64) +CFI_OFFSET (17, -60) +CFI_OFFSET (18, -56) +CFI_OFFSET (19, -52) +CFI_OFFSET (20, -48) +CFI_OFFSET (21, -44) +CFI_OFFSET (22, -40) +CFI_OFFSET (23, -36) +CFI_OFFSET (24, -32) +CFI_OFFSET (25, -28) +CFI_OFFSET (26, -24) +CFI_OFFSET (27, -20) +CFI_OFFSET (28, -16) +CFI_OFFSET (29, -12) +CFI_OFFSET (30, -8) +CFI_OFFSET (31, -4) +FUNCTION(_restgpr_14_x) lwz 14,-72(11) /* restore gp registers */ +CFI_RESTORE (14) +FUNCTION(_restgpr_15_x) lwz 15,-68(11) +CFI_RESTORE (15) +FUNCTION(_restgpr_16_x) lwz 16,-64(11) +CFI_RESTORE (16) +FUNCTION(_restgpr_17_x) lwz 17,-60(11) +CFI_RESTORE (17) +FUNCTION(_restgpr_18_x) lwz 18,-56(11) +CFI_RESTORE (18) +FUNCTION(_restgpr_19_x) lwz 19,-52(11) +CFI_RESTORE (19) +FUNCTION(_restgpr_20_x) lwz 20,-48(11) +CFI_RESTORE (20) +FUNCTION(_restgpr_21_x) lwz 21,-44(11) +CFI_RESTORE (21) +FUNCTION(_restgpr_22_x) lwz 22,-40(11) +CFI_RESTORE (22) +FUNCTION(_restgpr_23_x) lwz 23,-36(11) +CFI_RESTORE (23) +FUNCTION(_restgpr_24_x) lwz 24,-32(11) +CFI_RESTORE (24) +FUNCTION(_restgpr_25_x) lwz 25,-28(11) +CFI_RESTORE (25) +FUNCTION(_restgpr_26_x) lwz 26,-24(11) +CFI_RESTORE (26) +FUNCTION(_restgpr_27_x) lwz 27,-20(11) +CFI_RESTORE (27) +FUNCTION(_restgpr_28_x) lwz 28,-16(11) +CFI_RESTORE (28) +FUNCTION(_restgpr_29_x) lwz 29,-12(11) +CFI_RESTORE (29) +FUNCTION(_restgpr_30_x) lwz 30,-8(11) +CFI_RESTORE (30) +FUNCTION(_restgpr_31_x) lwz 0,4(11) + lwz 31,-4(11) +CFI_RESTORE (31) + mtlr 0 +CFI_RESTORE (65) + mr 1,11 +CFI_DEF_CFA_REGISTER (1) + blr +CFI_ENDPROC + +CFI_STARTPROC +FUNCTION(_savegpr_14) stw 14,-72(11) /* save gp registers */ +FUNCTION(_savegpr_15) stw 15,-68(11) +FUNCTION(_savegpr_16) stw 16,-64(11) +FUNCTION(_savegpr_17) stw 17,-60(11) +FUNCTION(_savegpr_18) stw 18,-56(11) +FUNCTION(_savegpr_19) stw 19,-52(11) +FUNCTION(_savegpr_20) stw 20,-48(11) +FUNCTION(_savegpr_21) stw 21,-44(11) +FUNCTION(_savegpr_22) stw 22,-40(11) +FUNCTION(_savegpr_23) stw 23,-36(11) +FUNCTION(_savegpr_24) stw 24,-32(11) +FUNCTION(_savegpr_25) stw 25,-28(11) +FUNCTION(_savegpr_26) stw 26,-24(11) +FUNCTION(_savegpr_27) stw 27,-20(11) +FUNCTION(_savegpr_28) stw 28,-16(11) +FUNCTION(_savegpr_29) stw 29,-12(11) +FUNCTION(_savegpr_30) stw 30,-8(11) +FUNCTION(_savegpr_31) stw 31,-4(11) + blr +CFI_ENDPROC diff --git a/include/grub/compiler-rt.h b/include/grub/compiler-rt.h new file mode 100644 index 0000000..7f76967 --- /dev/null +++ b/include/grub/compiler-rt.h @@ -0,0 +1,82 @@ +/* compiler.h - macros for various compiler features */ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2002,2003,2005,2006,2007,2008,2009,2010,2014 Free Software Foundation, Inc. + * + * GRUB is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * GRUB is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GRUB. If not, see . + */ + +#ifndef GRUB_COMPILER_RT_HEADER +#define GRUB_COMPILER_RT_HEADER 1 + +#if defined (__powerpc__) + +void EXPORT_FUNC (_restgpr_14_x) (void); +void EXPORT_FUNC (_restgpr_15_x) (void); +void EXPORT_FUNC (_restgpr_16_x) (void); +void EXPORT_FUNC (_restgpr_17_x) (void); +void EXPORT_FUNC (_restgpr_18_x) (void); +void EXPORT_FUNC (_restgpr_19_x) (void); +void EXPORT_FUNC (_restgpr_20_x) (void); +void EXPORT_FUNC (_restgpr_21_x) (void); +void EXPORT_FUNC (_restgpr_22_x) (void); +void EXPORT_FUNC (_restgpr_23_x) (void); +void EXPORT_FUNC (_restgpr_24_x) (void); +void EXPORT_FUNC (_restgpr_25_x) (void); +void EXPORT_FUNC (_restgpr_26_x) (void); +void EXPORT_FUNC (_restgpr_27_x) (void); +void EXPORT_FUNC (_restgpr_28_x) (void); +void EXPORT_FUNC (_restgpr_29_x) (void); +void EXPORT_FUNC (_restgpr_30_x) (void); +void EXPORT_FUNC (_restgpr_31_x) (void); +void EXPORT_FUNC (_savegpr_14) (void); +void EXPORT_FUNC (_savegpr_15) (void); +void EXPORT_FUNC (_savegpr_16) (void); +void EXPORT_FUNC (_savegpr_17) (void); +void EXPORT_FUNC (_savegpr_18) (void); +void EXPORT_FUNC (_savegpr_19) (void); +void EXPORT_FUNC (_savegpr_20) (void); +void EXPORT_FUNC (_savegpr_21) (void); +void EXPORT_FUNC (_savegpr_22) (void); +void EXPORT_FUNC (_savegpr_23) (void); +void EXPORT_FUNC (_savegpr_24) (void); +void EXPORT_FUNC (_savegpr_25) (void); +void EXPORT_FUNC (_savegpr_26) (void); +void EXPORT_FUNC (_savegpr_27) (void); +void EXPORT_FUNC (_savegpr_28) (void); +void EXPORT_FUNC (_savegpr_29) (void); +void EXPORT_FUNC (_savegpr_30) (void); +void EXPORT_FUNC (_savegpr_31) (void); + +grub_uint64_t +EXPORT_FUNC (__lshrdi3) (grub_uint64_t u, int b); + +grub_uint64_t +EXPORT_FUNC (__ashrdi3) (grub_uint64_t u, int b); + +grub_uint64_t +EXPORT_FUNC (__ashldi3) (grub_uint64_t u, int b); + +int +EXPORT_FUNC (__ucmpdi2) (grub_uint64_t a, grub_uint64_t b); + +grub_uint32_t +EXPORT_FUNC (__bswapsi2) (grub_uint32_t u); + +grub_uint64_t +EXPORT_FUNC (__bswapdi2) (grub_uint64_t u); + +#endif + +#endif /* ! GRUB_COMPILER_RT_HEADER */