From a4ea9134214da4801400129cdf7108a5f9e98a10 Mon Sep 17 00:00:00 2001
From: Paulo Flabiano Smorigo <pfsmorigo@linux.vnet.ibm.com>
Date: Wed, 13 Aug 2014 19:00:19 +0000
Subject: [PATCH 142/143] Files reorganization and include some libgcc fuctions
As we avoid libgcc dependency for powerpc64el, we moved some functions
to other files and add the necessary ones.
* Makefile.core.def: Include compiler-rt.S.
* misc.c: Add the necessary libgcc functions.
* compiler-rt.S: New file.
* libgcc.h: Move some content from here ...
* compiler.h: ... to here.
Also-By: Brent Baude <bbaude@redhat.com>
Also-By: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>
---
grub-core/Makefile.core.def | 1 +
grub-core/kern/misc.c | 107 ++++++++++++++++++++++++++++
grub-core/kern/powerpc/compiler-rt.S | 130 +++++++++++++++++++++++++++++++++++
include/grub/compiler.h | 61 ++++++++++++++++
include/grub/libgcc.h | 67 ------------------
5 files changed, 299 insertions(+), 67 deletions(-)
create mode 100644 grub-core/kern/powerpc/compiler-rt.S
diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def
index 7bf1c8a..9ff9ae5 100644
--- a/grub-core/Makefile.core.def
+++ b/grub-core/Makefile.core.def
@@ -252,6 +252,7 @@ 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/misc.c b/grub-core/kern/misc.c
index a56cfe7..a3e5056 100644
--- a/grub-core/kern/misc.c
+++ b/grub-core/kern/misc.c
@@ -1345,3 +1345,110 @@ grub_real_boot_time (const char *file,
grub_error_pop ();
}
#endif
+
+#if defined (NO_LIBGCC)
+
+/* 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_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;
+}
+
+#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
+ * <http://www.gnu.org/licenses/>.
+ */
+
+/* Do any initializations needed for the eabi environment */
+
+#include <grub/symbol.h>
+#include <grub/dl.h>
+
+ .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.h b/include/grub/compiler.h
index c9e1d7a..a9a684c 100644
--- a/include/grub/compiler.h
+++ b/include/grub/compiler.h
@@ -48,4 +48,65 @@
# define WARN_UNUSED_RESULT
#endif
+#include "types.h"
+
+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
+ };
+};
+
+#if defined (__powerpc__)
+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);
+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);
+
+#endif
+
#endif /* ! GRUB_COMPILER_HEADER */
diff --git a/include/grub/libgcc.h b/include/grub/libgcc.h
index 8e93b67..5bdb8fb 100644
--- a/include/grub/libgcc.h
+++ b/include/grub/libgcc.h
@@ -16,73 +16,6 @@
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
-/* We need to include config-util.h.in for HAVE_*. */
-#ifndef __STDC_VERSION__
-#define __STDC_VERSION__ 0
-#endif
-#include <config-util.h>
-
-/* On x86 these functions aren't really needed. Save some space. */
-#if !defined (__i386__) && !defined (__x86_64__)
-# ifdef HAVE___ASHLDI3
-void EXPORT_FUNC (__ashldi3) (void);
-# endif
-# ifdef HAVE___ASHRDI3
-void EXPORT_FUNC (__ashrdi3) (void);
-# endif
-# ifdef HAVE___LSHRDI3
-void EXPORT_FUNC (__lshrdi3) (void);
-# endif
-# ifdef HAVE___UCMPDI2
-void EXPORT_FUNC (__ucmpdi2) (void);
-# endif
-# ifdef HAVE___BSWAPSI2
-void EXPORT_FUNC (__bswapsi2) (void);
-# endif
-# ifdef HAVE___BSWAPDI2
-void EXPORT_FUNC (__bswapdi2) (void);
-# endif
-#endif
-
-#ifdef HAVE__RESTGPR_14_X
-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);
-#endif
-
#if defined (__arm__)
void EXPORT_FUNC (__aeabi_lasr) (void);
void EXPORT_FUNC (__aeabi_llsl) (void);
--
1.9.3