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authorDenys Dmytriyenko <denis@denix.org>2009-03-17 14:32:59 -0400
committerDenys Dmytriyenko <denis@denix.org>2009-03-17 14:32:59 -0400
commit709c4d66e0b107ca606941b988bad717c0b45d9b (patch)
tree37ee08b1eb308f3b2b6426d5793545c38396b838 /recipes/gcc/gcc-3.4.6/gcc34-thumb-support.patch
parentfa6cd5a3b993f16c27de4ff82b42684516d433ba (diff)
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rename packages/ to recipes/ per earlier agreement
See links below for more details: http://thread.gmane.org/gmane.comp.handhelds.openembedded/21326 http://thread.gmane.org/gmane.comp.handhelds.openembedded/21816 Signed-off-by: Denys Dmytriyenko <denis@denix.org> Acked-by: Mike Westerhof <mwester@dls.net> Acked-by: Philip Balister <philip@balister.org> Acked-by: Khem Raj <raj.khem@gmail.com> Acked-by: Marcin Juszkiewicz <hrw@openembedded.org> Acked-by: Koen Kooi <koen@openembedded.org> Acked-by: Frans Meulenbroeks <fransmeulenbroeks@gmail.com>
Diffstat (limited to 'recipes/gcc/gcc-3.4.6/gcc34-thumb-support.patch')
-rw-r--r--recipes/gcc/gcc-3.4.6/gcc34-thumb-support.patch156
1 files changed, 156 insertions, 0 deletions
diff --git a/recipes/gcc/gcc-3.4.6/gcc34-thumb-support.patch b/recipes/gcc/gcc-3.4.6/gcc34-thumb-support.patch
new file mode 100644
index 0000000000..a4f156f8db
--- /dev/null
+++ b/recipes/gcc/gcc-3.4.6/gcc34-thumb-support.patch
@@ -0,0 +1,156 @@
+# This patch contains various fixes for the thumb code handling in GCC 3.4.4
+#
+# Most of these are minor fixes to code which is either missing (Linux thumb
+# div0, thumb clear instruction cache) or uses the wrong return mechanism
+# (libffi)
+#
+# There is also a significant design problem with the _call_via_rx code -
+# it cannot be in a shared library because a call via PLT simply won't
+# work (for _call_via_ip) and is very inefficient anyway.
+#
+# This is fixed in uclibc simply by incorporating the code into crti.S
+# (an extra 30 bytes for the 15 functions) even though not all link units
+# require all the code - there is so little of it. That doesn't work with
+# the crti.asm here because it is linked with libgcc.a which already defines
+# these symbols
+#
+--- gcc-3.4.4/gcc/config/arm/t-linux.orig 2005-08-09 08:55:02.181797492 -0700
++++ gcc-3.4.4/gcc/config/arm/t-linux 2005-08-09 08:58:22.766419486 -0700
+@@ -7,6 +7,7 @@
+ LIB1ASMFUNCS = _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_lnx \
+ _negdf2 _addsubdf3 _muldivdf3 _cmpdf2 _unorddf2 _fixdfsi _fixunsdfsi \
+ _truncdfsf2 _negsf2 _addsubsf3 _muldivsf3 _cmpsf2 _unordsf2 \
++ _call_via_rX \
+ _fixsfsi _fixunssfsi
+
+ # MULTILIB_OPTIONS = mhard-float/msoft-float
+--- gcc-3.4.4/.pc/gcc34-thumb-support.patch/gcc/config/arm/lib1funcs.asm 2004-01-15 08:56:34.000000000 -0800
++++ gcc-3.4.4/gcc/config/arm/lib1funcs.asm 2005-09-21 21:32:03.376927755 -0700
+@@ -811,13 +811,18 @@
+
+ /* Constants taken from <asm/unistd.h> and <asm/signal.h> */
+ #define SIGFPE 8
++#if !defined __thumb__
+ #define __NR_SYSCALL_BASE 0x900000
++#else
++#define __NR_SYSCALL_BASE 0
++#endif
+ #define __NR_getpid (__NR_SYSCALL_BASE+ 20)
+ #define __NR_kill (__NR_SYSCALL_BASE+ 37)
+
+ .code 32
+ FUNC_START div0
+
++#if ! defined __thumb__
+ stmfd sp!, {r1, lr}
+ swi __NR_getpid
+ cmn r0, #1000
+@@ -825,6 +830,28 @@
+ mov r1, #SIGFPE
+ swi __NR_kill
+ RETLDM r1
++#else
++ push {r1, r7, lr}
++ mov r7, #__NR_getpid
++ swi 0
++ @ above the compare is with -1000, but the standard syscall
++ @ macro checks for -1..-125
++ add r0, #125
++ bcs 90f
++ sub r0, #125
++ mov r1, #SIGFPE
++ mov r7, #__NR_kill
++ swi 0
++90:
++#if __ARM_ARCH__ > 4
++ pop {r1, r7, pc}
++#else
++ @ on 4T that won't work
++ pop {r1, r7}
++ pop {r3}
++ bx r3
++#endif
++#endif
+
+ FUNC_END div0
+
+@@ -845,14 +872,14 @@
+ code here switches to the correct mode before executing the function. */
+
+ .text
+- .align 0
++ .align 1
+ .force_thumb
+
+ .macro call_via register
+ THUMB_FUNC_START _call_via_\register
++ .hidden SYM (_call_via_\register)
+
+ bx \register
+- nop
+
+ SIZE (_call_via_\register)
+ .endm
+@@ -903,6 +930,7 @@
+ .code 16
+
+ THUMB_FUNC_START _interwork_call_via_\register
++ .hidden SYM (_interwork_call_via_\register)
+
+ bx pc
+ nop
+--- gcc-3.4.4/.pc/gcc34-thumb-support.patch/gcc/config/arm/linux-gas.h 2003-06-19 14:47:06.000000000 -0700
++++ gcc-3.4.4/gcc/config/arm/linux-gas.h 2005-09-20 16:09:55.027862200 -0700
+@@ -56,6 +56,7 @@
+
+ /* Clear the instruction cache from `beg' to `end'. This makes an
+ inline system call to SYS_cacheflush. */
++#if !defined(__thumb__)
+ #define CLEAR_INSN_CACHE(BEG, END) \
+ { \
+ register unsigned long _beg __asm ("a1") = (unsigned long) (BEG); \
+@@ -65,3 +66,18 @@
+ : "=r" (_beg) \
+ : "0" (_beg), "r" (_end), "r" (_flg)); \
+ }
++#else
++#define CLEAR_INSN_CACHE(BEG, END) \
++{ \
++ register unsigned long _beg __asm ("a1") = (unsigned long) (BEG); \
++ register unsigned long _end __asm ("a2") = (unsigned long) (END); \
++ register unsigned long _flg __asm ("a3") = 0; \
++ register unsigned long _swi __asm ("a4") = 0xf0002; \
++ __asm __volatile ("push {r7}\n" \
++ " mov r7,a4\n" \
++ " swi 0 @ sys_cacheflush\n" \
++ " pop {r7}\n" \
++ : "=r" (_beg) \
++ : "0" (_beg), "r" (_end), "r" (_flg), "r" (_swi)); \
++}
++#endif
+--- gcc-3.4.4/.pc/gcc34-thumb-support.patch/libffi/src/arm/sysv.S 2003-10-21 12:01:55.000000000 -0700
++++ gcc-3.4.4/libffi/src/arm/sysv.S 2005-09-20 16:09:55.027862200 -0700
+@@ -41,6 +41,14 @@
+ #define ENTRY(x) .globl CNAME(x); .type CNAME(x),%function; CNAME(x):
+ #endif
+
++/* Get the correct return instruction */
++#if defined(__ARM_ARCH_4T__) || defined(__ARM_ARCH_5__) \
++ || defined(__ARM_ARCH_5T__) || defined(__ARM_ARCH_5TE__)
++#define RET bx r
++#else
++#define RET mov pc,
++#endif
++
+ .text
+
+ # a1: ffi_prep_args
+@@ -66,7 +74,7 @@
+
+ # And call
+ mov lr, pc
+- mov pc, ip
++ RET ip
+
+ # move first 4 parameters in registers
+ ldr a1, [sp, #0]