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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Paulo Flabiano Smorigo <pfsmorigo@linux.vnet.ibm.com>
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Date: Wed, 13 Aug 2014 19:00:19 +0000
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Subject: [PATCH] Files reorganization and include some libgcc fuctions
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As we avoid libgcc dependency for powerpc64el, we moved some functions
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to other files and add the necessary ones.
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* Makefile.core.def: Include compiler-rt.S.
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* misc.c: Add the necessary libgcc functions.
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* compiler-rt.S: New file.
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* libgcc.h: Move some content from here ...
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* compiler.h: ... to here.
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Also-By: Brent Baude <bbaude@redhat.com>
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Also-By: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>
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---
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grub-core/Makefile.core.def | 1 +
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grub-core/kern/misc.c | 107 ++++++++++++++++++++++++++++
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include/grub/compiler.h | 61 ++++++++++++++++
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include/grub/libgcc.h | 67 ------------------
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grub-core/kern/powerpc/compiler-rt.S | 130 +++++++++++++++++++++++++++++++++++
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5 files changed, 299 insertions(+), 67 deletions(-)
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create mode 100644 grub-core/kern/powerpc/compiler-rt.S
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diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def
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index 7bf1c8a5880..9ff9ae5a311 100644
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--- a/grub-core/Makefile.core.def
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+++ b/grub-core/Makefile.core.def
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@@ -252,6 +252,7 @@ kernel = {
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powerpc_ieee1275 = kern/powerpc/cache.S;
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powerpc_ieee1275 = kern/powerpc/dl.c;
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+ powerpc_ieee1275 = kern/powerpc/compiler-rt.S;
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sparc64_ieee1275 = kern/sparc64/cache.S;
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sparc64_ieee1275 = kern/sparc64/dl.c;
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diff --git a/grub-core/kern/misc.c b/grub-core/kern/misc.c
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index a56cfe78994..a3e5056db3f 100644
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--- a/grub-core/kern/misc.c
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+++ b/grub-core/kern/misc.c
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@@ -1345,3 +1345,110 @@ grub_real_boot_time (const char *file,
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grub_error_pop ();
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}
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#endif
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+
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+#if defined (NO_LIBGCC)
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+
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+/* Based on libgcc2.c from gcc suite. */
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+int
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+__ucmpdi2 (grub_uint64_t a, grub_uint64_t b)
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+{
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+ union component64 ac, bc;
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+ ac.full = a;
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+ bc.full = b;
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+
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+ if (ac.high < bc.high)
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+ return 0;
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+ else if (ac.high > bc.high)
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+ return 2;
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+
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+ if (ac.low < bc.low)
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+ return 0;
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+ else if (ac.low > bc.low)
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+ return 2;
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+ return 1;
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+}
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+
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+
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+/* Based on libgcc2.c from gcc suite. */
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+grub_uint64_t
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+__lshrdi3 (grub_uint64_t u, int b)
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+{
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+ if (b == 0)
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+ return u;
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+
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+ const union component64 uu = {.full = u};
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+ const int bm = 32 - b;
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+ union component64 w;
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+
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+ if (bm <= 0)
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+ {
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+ w.high = 0;
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+ w.low = (grub_uint32_t) uu.high >> -bm;
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+ }
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+ else
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+ {
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+ const grub_uint32_t carries = (grub_uint32_t) uu.high << bm;
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+
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+ w.high = (grub_uint32_t) uu.high >> b;
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+ w.low = ((grub_uint32_t) uu.low >> b) | carries;
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+ }
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+
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+ return w.full;
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+}
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+
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+/* Based on libgcc2.c from gcc suite. */
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+grub_uint64_t
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+__ashrdi3 (grub_uint64_t u, int b)
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+{
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+ if (b == 0)
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+ return u;
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+
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+ const union component64 uu = {.full = u};
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+ const int bm = 32 - b;
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+ union component64 w;
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+
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+ if (bm <= 0)
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+ {
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+ /* w.high = 1..1 or 0..0 */
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+ w.high = uu.high >> (32 - 1);
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+ w.low = uu.high >> -bm;
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+ }
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+ else
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+ {
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+ const grub_uint32_t carries = (grub_uint32_t) uu.high << bm;
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+
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+ w.high = uu.high >> b;
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+ w.low = ((grub_uint32_t) uu.low >> b) | carries;
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+ }
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+
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+ return w.full;
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+}
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+
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+/* Based on libgcc2.c from gcc suite. */
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+grub_uint64_t
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+__ashldi3 (grub_uint64_t u, int b)
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+{
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+ if (b == 0)
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+ return u;
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+
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+ const union component64 uu = {.full = u};
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+ const int bm = 32 - b;
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+ union component64 w;
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+
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+ if (bm <= 0)
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+ {
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+ w.low = 0;
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+ w.high = (grub_uint32_t) uu.low << -bm;
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+ }
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+ else
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+ {
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+ const grub_uint32_t carries = (grub_uint32_t) uu.low >> bm;
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+
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+ w.low = (grub_uint32_t) uu.low << b;
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+ w.high = ((grub_uint32_t) uu.high << b) | carries;
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+ }
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+
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+ return w.full;
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+}
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+
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+#endif
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diff --git a/include/grub/compiler.h b/include/grub/compiler.h
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index c9e1d7a73dc..a9a684ccba6 100644
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--- a/include/grub/compiler.h
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+++ b/include/grub/compiler.h
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@@ -48,4 +48,65 @@
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# define WARN_UNUSED_RESULT
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#endif
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+#include "types.h"
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+
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+union component64
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+{
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+ grub_uint64_t full;
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+ struct
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+ {
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+#ifdef GRUB_CPU_WORDS_BIGENDIAN
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+ grub_uint32_t high;
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+ grub_uint32_t low;
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+#else
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+ grub_uint32_t low;
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+ grub_uint32_t high;
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+#endif
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+ };
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+};
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+
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+#if defined (__powerpc__)
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+grub_uint64_t EXPORT_FUNC (__lshrdi3) (grub_uint64_t u, int b);
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+grub_uint64_t EXPORT_FUNC (__ashrdi3) (grub_uint64_t u, int b);
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+grub_uint64_t EXPORT_FUNC (__ashldi3) (grub_uint64_t u, int b);
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+int EXPORT_FUNC(__ucmpdi2) (grub_uint64_t a, grub_uint64_t b);
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+void EXPORT_FUNC (_restgpr_14_x) (void);
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+void EXPORT_FUNC (_restgpr_15_x) (void);
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+void EXPORT_FUNC (_restgpr_16_x) (void);
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+void EXPORT_FUNC (_restgpr_17_x) (void);
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+void EXPORT_FUNC (_restgpr_18_x) (void);
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+void EXPORT_FUNC (_restgpr_19_x) (void);
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+void EXPORT_FUNC (_restgpr_20_x) (void);
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+void EXPORT_FUNC (_restgpr_21_x) (void);
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+void EXPORT_FUNC (_restgpr_22_x) (void);
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+void EXPORT_FUNC (_restgpr_23_x) (void);
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+void EXPORT_FUNC (_restgpr_24_x) (void);
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+void EXPORT_FUNC (_restgpr_25_x) (void);
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+void EXPORT_FUNC (_restgpr_26_x) (void);
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+void EXPORT_FUNC (_restgpr_27_x) (void);
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+void EXPORT_FUNC (_restgpr_28_x) (void);
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+void EXPORT_FUNC (_restgpr_29_x) (void);
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+void EXPORT_FUNC (_restgpr_30_x) (void);
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+void EXPORT_FUNC (_restgpr_31_x) (void);
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+void EXPORT_FUNC (_savegpr_14) (void);
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+void EXPORT_FUNC (_savegpr_15) (void);
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+void EXPORT_FUNC (_savegpr_16) (void);
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+void EXPORT_FUNC (_savegpr_17) (void);
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+void EXPORT_FUNC (_savegpr_18) (void);
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+void EXPORT_FUNC (_savegpr_19) (void);
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+void EXPORT_FUNC (_savegpr_20) (void);
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+void EXPORT_FUNC (_savegpr_21) (void);
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+void EXPORT_FUNC (_savegpr_22) (void);
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+void EXPORT_FUNC (_savegpr_23) (void);
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+void EXPORT_FUNC (_savegpr_24) (void);
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+void EXPORT_FUNC (_savegpr_25) (void);
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+void EXPORT_FUNC (_savegpr_26) (void);
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+void EXPORT_FUNC (_savegpr_27) (void);
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+void EXPORT_FUNC (_savegpr_28) (void);
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+void EXPORT_FUNC (_savegpr_29) (void);
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+void EXPORT_FUNC (_savegpr_30) (void);
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+void EXPORT_FUNC (_savegpr_31) (void);
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+
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+#endif
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+
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#endif /* ! GRUB_COMPILER_HEADER */
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diff --git a/include/grub/libgcc.h b/include/grub/libgcc.h
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index 8e93b6792d9..5bdb8fb5cb9 100644
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--- a/include/grub/libgcc.h
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+++ b/include/grub/libgcc.h
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@@ -16,73 +16,6 @@
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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-/* We need to include config-util.h.in for HAVE_*. */
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-#ifndef __STDC_VERSION__
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-#define __STDC_VERSION__ 0
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-#endif
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-#include <config-util.h>
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-
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-/* On x86 these functions aren't really needed. Save some space. */
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-#if !defined (__i386__) && !defined (__x86_64__)
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-# ifdef HAVE___ASHLDI3
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-void EXPORT_FUNC (__ashldi3) (void);
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-# endif
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-# ifdef HAVE___ASHRDI3
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-void EXPORT_FUNC (__ashrdi3) (void);
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-# endif
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f725e3 |
-# ifdef HAVE___LSHRDI3
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-void EXPORT_FUNC (__lshrdi3) (void);
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-# endif
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-# ifdef HAVE___UCMPDI2
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-void EXPORT_FUNC (__ucmpdi2) (void);
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-# endif
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f725e3 |
-# ifdef HAVE___BSWAPSI2
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-void EXPORT_FUNC (__bswapsi2) (void);
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-# endif
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f725e3 |
-# ifdef HAVE___BSWAPDI2
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-void EXPORT_FUNC (__bswapdi2) (void);
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-# endif
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-#endif
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-
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-#ifdef HAVE__RESTGPR_14_X
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-void EXPORT_FUNC (_restgpr_14_x) (void);
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-void EXPORT_FUNC (_restgpr_15_x) (void);
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-void EXPORT_FUNC (_restgpr_16_x) (void);
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-void EXPORT_FUNC (_restgpr_17_x) (void);
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-void EXPORT_FUNC (_restgpr_18_x) (void);
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-void EXPORT_FUNC (_restgpr_19_x) (void);
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-void EXPORT_FUNC (_restgpr_20_x) (void);
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-void EXPORT_FUNC (_restgpr_21_x) (void);
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-void EXPORT_FUNC (_restgpr_22_x) (void);
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-void EXPORT_FUNC (_restgpr_23_x) (void);
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f725e3 |
-void EXPORT_FUNC (_restgpr_24_x) (void);
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-void EXPORT_FUNC (_restgpr_25_x) (void);
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-void EXPORT_FUNC (_restgpr_26_x) (void);
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-void EXPORT_FUNC (_restgpr_27_x) (void);
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-void EXPORT_FUNC (_restgpr_28_x) (void);
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f725e3 |
-void EXPORT_FUNC (_restgpr_29_x) (void);
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f725e3 |
-void EXPORT_FUNC (_restgpr_30_x) (void);
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f725e3 |
-void EXPORT_FUNC (_restgpr_31_x) (void);
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-void EXPORT_FUNC (_savegpr_14) (void);
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f725e3 |
-void EXPORT_FUNC (_savegpr_15) (void);
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f725e3 |
-void EXPORT_FUNC (_savegpr_16) (void);
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f725e3 |
-void EXPORT_FUNC (_savegpr_17) (void);
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f725e3 |
-void EXPORT_FUNC (_savegpr_18) (void);
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f725e3 |
-void EXPORT_FUNC (_savegpr_19) (void);
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f725e3 |
-void EXPORT_FUNC (_savegpr_20) (void);
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f725e3 |
-void EXPORT_FUNC (_savegpr_21) (void);
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f725e3 |
-void EXPORT_FUNC (_savegpr_22) (void);
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f725e3 |
-void EXPORT_FUNC (_savegpr_23) (void);
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f725e3 |
-void EXPORT_FUNC (_savegpr_24) (void);
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f725e3 |
-void EXPORT_FUNC (_savegpr_25) (void);
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f725e3 |
-void EXPORT_FUNC (_savegpr_26) (void);
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f725e3 |
-void EXPORT_FUNC (_savegpr_27) (void);
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f725e3 |
-void EXPORT_FUNC (_savegpr_28) (void);
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f725e3 |
-void EXPORT_FUNC (_savegpr_29) (void);
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f725e3 |
-void EXPORT_FUNC (_savegpr_30) (void);
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f725e3 |
-void EXPORT_FUNC (_savegpr_31) (void);
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f725e3 |
-#endif
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f725e3 |
-
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f725e3 |
#if defined (__arm__)
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f725e3 |
void EXPORT_FUNC (__aeabi_lasr) (void);
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f725e3 |
void EXPORT_FUNC (__aeabi_llsl) (void);
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f725e3 |
diff --git a/grub-core/kern/powerpc/compiler-rt.S b/grub-core/kern/powerpc/compiler-rt.S
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f725e3 |
new file mode 100644
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f725e3 |
index 00000000000..63e3a0d4e89
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f725e3 |
--- /dev/null
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f725e3 |
+++ b/grub-core/kern/powerpc/compiler-rt.S
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f725e3 |
@@ -0,0 +1,130 @@
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f725e3 |
+/*
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f725e3 |
+ * Special support for eabi and SVR4
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f725e3 |
+ *
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f725e3 |
+ * Copyright (C) 1995-2014 Free Software Foundation, Inc.
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f725e3 |
+ * Written By Michael Meissner
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f725e3 |
+ * 64-bit support written by David Edelsohn
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f725e3 |
+ *
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f725e3 |
+ * This file is free software; you can redistribute it and/or modify it
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f725e3 |
+ * under the terms of the GNU General Public License as published by the
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f725e3 |
+ * Free Software Foundation; either version 3, or (at your option) any
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f725e3 |
+ * later version.
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f725e3 |
+ *
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f725e3 |
+ * This file is distributed in the hope that it will be useful, but
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f725e3 |
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
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f725e3 |
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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f725e3 |
+ * General Public License for more details.
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f725e3 |
+ *
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f725e3 |
+ * Under Section 7 of GPL version 3, you are granted additional
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f725e3 |
+ * permissions described in the GCC Runtime Library Exception, version
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f725e3 |
+ * 3.1, as published by the Free Software Foundation.
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f725e3 |
+ *
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f725e3 |
+ * You should have received a copy of the GNU General Public License and
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f725e3 |
+ * a copy of the GCC Runtime Library Exception along with this program;
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f725e3 |
+ * see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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f725e3 |
+ * <http://www.gnu.org/licenses/>.
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f725e3 |
+ */
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f725e3 |
+
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f725e3 |
+/* Do any initializations needed for the eabi environment */
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f725e3 |
+
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f725e3 |
+#include <grub/symbol.h>
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f725e3 |
+#include <grub/dl.h>
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f725e3 |
+
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f725e3 |
+ .section ".text"
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f725e3 |
+
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f725e3 |
+#define CFI_RESTORE(reg) .cfi_restore reg
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f725e3 |
+#define CFI_OFFSET(reg, off) .cfi_offset reg, off
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f725e3 |
+#define CFI_DEF_CFA_REGISTER(reg) .cfi_def_cfa_register reg
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f725e3 |
+#define CFI_STARTPROC .cfi_startproc
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f725e3 |
+#define CFI_ENDPROC .cfi_endproc
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f725e3 |
+
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f725e3 |
+/* Routines for restoring integer registers, called by the compiler. */
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f725e3 |
+/* Called with r11 pointing to the stack header word of the caller of the */
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f725e3 |
+/* function, just beyond the end of the integer restore area. */
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f725e3 |
+
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f725e3 |
+CFI_STARTPROC
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f725e3 |
+CFI_DEF_CFA_REGISTER (11)
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f725e3 |
+CFI_OFFSET (65, 4)
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f725e3 |
+CFI_OFFSET (14, -72)
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f725e3 |
+CFI_OFFSET (15, -68)
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f725e3 |
+CFI_OFFSET (16, -64)
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f725e3 |
+CFI_OFFSET (17, -60)
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f725e3 |
+CFI_OFFSET (18, -56)
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f725e3 |
+CFI_OFFSET (19, -52)
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f725e3 |
+CFI_OFFSET (20, -48)
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f725e3 |
+CFI_OFFSET (21, -44)
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f725e3 |
+CFI_OFFSET (22, -40)
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f725e3 |
+CFI_OFFSET (23, -36)
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f725e3 |
+CFI_OFFSET (24, -32)
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f725e3 |
+CFI_OFFSET (25, -28)
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f725e3 |
+CFI_OFFSET (26, -24)
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f725e3 |
+CFI_OFFSET (27, -20)
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f725e3 |
+CFI_OFFSET (28, -16)
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f725e3 |
+CFI_OFFSET (29, -12)
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f725e3 |
+CFI_OFFSET (30, -8)
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f725e3 |
+CFI_OFFSET (31, -4)
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f725e3 |
+FUNCTION(_restgpr_14_x) lwz 14,-72(11) /* restore gp registers */
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f725e3 |
+CFI_RESTORE (14)
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f725e3 |
+FUNCTION(_restgpr_15_x) lwz 15,-68(11)
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f725e3 |
+CFI_RESTORE (15)
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f725e3 |
+FUNCTION(_restgpr_16_x) lwz 16,-64(11)
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f725e3 |
+CFI_RESTORE (16)
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f725e3 |
+FUNCTION(_restgpr_17_x) lwz 17,-60(11)
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f725e3 |
+CFI_RESTORE (17)
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f725e3 |
+FUNCTION(_restgpr_18_x) lwz 18,-56(11)
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f725e3 |
+CFI_RESTORE (18)
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f725e3 |
+FUNCTION(_restgpr_19_x) lwz 19,-52(11)
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f725e3 |
+CFI_RESTORE (19)
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f725e3 |
+FUNCTION(_restgpr_20_x) lwz 20,-48(11)
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f725e3 |
+CFI_RESTORE (20)
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f725e3 |
+FUNCTION(_restgpr_21_x) lwz 21,-44(11)
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f725e3 |
+CFI_RESTORE (21)
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f725e3 |
+FUNCTION(_restgpr_22_x) lwz 22,-40(11)
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f725e3 |
+CFI_RESTORE (22)
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f725e3 |
+FUNCTION(_restgpr_23_x) lwz 23,-36(11)
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f725e3 |
+CFI_RESTORE (23)
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f725e3 |
+FUNCTION(_restgpr_24_x) lwz 24,-32(11)
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f725e3 |
+CFI_RESTORE (24)
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f725e3 |
+FUNCTION(_restgpr_25_x) lwz 25,-28(11)
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f725e3 |
+CFI_RESTORE (25)
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f725e3 |
+FUNCTION(_restgpr_26_x) lwz 26,-24(11)
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f725e3 |
+CFI_RESTORE (26)
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f725e3 |
+FUNCTION(_restgpr_27_x) lwz 27,-20(11)
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f725e3 |
+CFI_RESTORE (27)
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f725e3 |
+FUNCTION(_restgpr_28_x) lwz 28,-16(11)
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f725e3 |
+CFI_RESTORE (28)
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f725e3 |
+FUNCTION(_restgpr_29_x) lwz 29,-12(11)
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f725e3 |
+CFI_RESTORE (29)
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f725e3 |
+FUNCTION(_restgpr_30_x) lwz 30,-8(11)
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f725e3 |
+CFI_RESTORE (30)
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f725e3 |
+FUNCTION(_restgpr_31_x) lwz 0,4(11)
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f725e3 |
+ lwz 31,-4(11)
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f725e3 |
+CFI_RESTORE (31)
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f725e3 |
+ mtlr 0
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f725e3 |
+CFI_RESTORE (65)
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f725e3 |
+ mr 1,11
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f725e3 |
+CFI_DEF_CFA_REGISTER (1)
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f725e3 |
+ blr
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f725e3 |
+CFI_ENDPROC
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f725e3 |
+
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f725e3 |
+CFI_STARTPROC
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f725e3 |
+FUNCTION(_savegpr_14) stw 14,-72(11) /* save gp registers */
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f725e3 |
+FUNCTION(_savegpr_15) stw 15,-68(11)
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f725e3 |
+FUNCTION(_savegpr_16) stw 16,-64(11)
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f725e3 |
+FUNCTION(_savegpr_17) stw 17,-60(11)
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f725e3 |
+FUNCTION(_savegpr_18) stw 18,-56(11)
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f725e3 |
+FUNCTION(_savegpr_19) stw 19,-52(11)
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f725e3 |
+FUNCTION(_savegpr_20) stw 20,-48(11)
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f725e3 |
+FUNCTION(_savegpr_21) stw 21,-44(11)
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f725e3 |
+FUNCTION(_savegpr_22) stw 22,-40(11)
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f725e3 |
+FUNCTION(_savegpr_23) stw 23,-36(11)
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f725e3 |
+FUNCTION(_savegpr_24) stw 24,-32(11)
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f725e3 |
+FUNCTION(_savegpr_25) stw 25,-28(11)
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f725e3 |
+FUNCTION(_savegpr_26) stw 26,-24(11)
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f725e3 |
+FUNCTION(_savegpr_27) stw 27,-20(11)
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f725e3 |
+FUNCTION(_savegpr_28) stw 28,-16(11)
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f725e3 |
+FUNCTION(_savegpr_29) stw 29,-12(11)
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f725e3 |
+FUNCTION(_savegpr_30) stw 30,-8(11)
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|
f725e3 |
+FUNCTION(_savegpr_31) stw 31,-4(11)
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|
f725e3 |
+ blr
|
|
|
f725e3 |
+CFI_ENDPROC
|