From 2470ef3c7e4ea175d8b70ff2676d0e715ac50816 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 485/506] 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/kern/misc.c | 107 ++++++++++++++++++++++++++++++++++++++++++++++++
include/grub/compiler.h | 61 +++++++++++++++++++++++++++
include/grub/libgcc.h | 24 +++++++++++
3 files changed, 192 insertions(+)
create mode 100644 include/grub/libgcc.h
diff --git a/grub-core/kern/misc.c b/grub-core/kern/misc.c
index 6b3397f..66f11f8 100644
--- a/grub-core/kern/misc.c
+++ b/grub-core/kern/misc.c
@@ -1144,3 +1144,110 @@ 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/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
new file mode 100644
index 0000000..5bdb8fb
--- /dev/null
+++ b/include/grub/libgcc.h
@@ -0,0 +1,24 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2004,2007,2009 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 <http://www.gnu.org/licenses/>.
+ */
+
+#if defined (__arm__)
+void EXPORT_FUNC (__aeabi_lasr) (void);
+void EXPORT_FUNC (__aeabi_llsl) (void);
+void EXPORT_FUNC (__aeabi_llsr) (void);
+void EXPORT_FUNC (__aeabi_ulcmp) (void);
+#endif
--
2.4.3