diff options
Diffstat (limited to 'meta-agl-bsp/recipes-bsp/u-boot/u-boot-ota/0002-Replace-wraps-with-built-in-code-to-remove-dependenc.patch')
| -rw-r--r-- | meta-agl-bsp/recipes-bsp/u-boot/u-boot-ota/0002-Replace-wraps-with-built-in-code-to-remove-dependenc.patch | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/meta-agl-bsp/recipes-bsp/u-boot/u-boot-ota/0002-Replace-wraps-with-built-in-code-to-remove-dependenc.patch b/meta-agl-bsp/recipes-bsp/u-boot/u-boot-ota/0002-Replace-wraps-with-built-in-code-to-remove-dependenc.patch new file mode 100644 index 000000000..7540b7467 --- /dev/null +++ b/meta-agl-bsp/recipes-bsp/u-boot/u-boot-ota/0002-Replace-wraps-with-built-in-code-to-remove-dependenc.patch @@ -0,0 +1,138 @@ +From ab0d7e270d89f6eb99582197d2d58bf60c9c3d26 Mon Sep 17 00:00:00 2001 +From: Anton Gerasimov <anton@advancedtelematic.com> +Date: Thu, 15 Sep 2016 16:49:32 +0200 +Subject: [PATCH 2/2] Replace wraps with built-in code to remove dependency on + multilib + +--- + arch/x86/config.mk | 2 -- + arch/x86/lib/gcc.c | 104 ++++++++++++++++++++++++++++++++++++++++++++--------- + 2 files changed, 87 insertions(+), 19 deletions(-) + +diff --git a/arch/x86/config.mk b/arch/x86/config.mk +index 999143e..139576e 100644 +--- a/arch/x86/config.mk ++++ b/arch/x86/config.mk +@@ -22,5 +22,3 @@ PLATFORM_RELFLAGS += -ffunction-sections -fvisibility=hidden + PLATFORM_LDFLAGS += --emit-relocs -Bsymbolic -Bsymbolic-functions -m elf_i386 + + LDFLAGS_FINAL += --gc-sections -pie +-LDFLAGS_FINAL += --wrap=__divdi3 --wrap=__udivdi3 +-LDFLAGS_FINAL += --wrap=__moddi3 --wrap=__umoddi3 +diff --git a/arch/x86/lib/gcc.c b/arch/x86/lib/gcc.c +index 497ad75..c321b11 100644 +--- a/arch/x86/lib/gcc.c ++++ b/arch/x86/lib/gcc.c +@@ -19,22 +19,92 @@ + + #ifdef __GNUC__ + +-/* +- * GCC's libgcc handling is quite broken. While the libgcc functions +- * are always regparm(0) the code that calls them uses whatever the +- * compiler call specifies. Therefore we need a wrapper around those +- * functions. See gcc bug PR41055 for more information. +- */ +-#define WRAP_LIBGCC_CALL(type, name) \ +- type __normal_##name(type a, type b) __attribute__((regparm(0))); \ +- type __wrap_##name(type a, type b); \ +- type __attribute__((no_instrument_function)) \ +- __wrap_##name(type a, type b) \ +- { return __normal_##name(a, b); } +- +-WRAP_LIBGCC_CALL(long long, __divdi3) +-WRAP_LIBGCC_CALL(unsigned long long, __udivdi3) +-WRAP_LIBGCC_CALL(long long, __moddi3) +-WRAP_LIBGCC_CALL(unsigned long long, __umoddi3) ++#include <stdint.h> ++#include <stddef.h> ++ ++uint64_t __udivmoddi4 ( uint64_t num, ++ uint64_t den, ++ uint64_t *rem_p ) ++{ ++ uint64_t quot = 0, qbit = 1; ++ ++ if ( den == 0 ) { ++ return 1/((unsigned)den); /* Intentional divide by zero, without ++ triggering a compiler warning which ++ would abort the build */ ++ } ++ ++ /* Left-justify denominator and count shift */ ++ while ( (int64_t)den >= 0 ) { ++ den <<= 1; ++ qbit <<= 1; ++ } ++ ++ while ( qbit ) { ++ if ( den <= num ) { ++ num -= den; ++ quot += qbit; ++ } ++ den >>= 1; ++ qbit >>= 1; ++ } ++ ++ if ( rem_p ) ++ *rem_p = num; ++ ++ return quot; ++} ++uint64_t __udivdi3( uint64_t num, uint64_t den ) ++{ ++ return __udivmoddi4(num, den, NULL); ++} ++ ++uint64_t __umoddi3 ( uint64_t num, uint64_t den ) ++{ ++ uint64_t v; ++ ++ (void) __udivmoddi4(num, den, &v); ++ return v; ++} ++ ++int64_t __divmoddi4 ( int64_t num, ++ int64_t den, ++ int64_t* rem_p ) ++{ ++ int minus = 0; ++ int64_t v; ++ ++ if ( num < 0 ) { ++ num = -num; ++ minus = 1; ++ } ++ if ( den < 0 ) { ++ den = -den; ++ minus ^= 1; ++ } ++ ++ v = __udivmoddi4(num, den, (uint64_t *)rem_p); ++ if ( minus ) { ++ v = -v; ++ if ( rem_p ) ++ *rem_p = -(*rem_p); ++ } ++ ++ return v; ++} ++ ++ ++int64_t __moddi3 (int64_t num, int64_t den) ++{ ++ int64_t v; ++ ++ (void) __divmoddi4(num, den, &v); ++ return v; ++} ++ ++int64_t __divdi3(int64_t num, int64_t den) ++{ ++ return __divmoddi4(num, den, NULL); ++} + + #endif +-- +2.9.3 + |