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GCC can emit prologue/epilogue code for the functions in various
different cases:
- frame pointers
- PIC build (to load ebx for indirect calls/jumps)
- forced stack smashing protection
If we used jump in such cases, we'd corrupt the call stack and
crash.
Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
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Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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to avoid shadow warnings
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
(cherry picked from commit f331f6d2eff5fb623bcc42213ccec12c7dbf95fd)
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
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Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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This reverts commit 73d6e5c41b61633e22ea74e3aa2df721512dca57.
barking up the wrong tree
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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alias l to their normal double counterparts.
Works around problems with libgcc blindly calling __finitel on e.g. ppc32
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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This fixes compilation errors on hosts that turn off long double support
for C99 like powerpc32.
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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so that it is easier to modify, sort, etc;
use __ in filenames of wrappers which wrap __functions
(it may be useful to have function and file names ALWAYS match);
remove names of not implemented wrappers (it was generating useless
empty .o files).
libm/ldouble_wrappers.c: comment out the wrapper which is
not compiled anyway
test/math/compile_test.c: improve this test, it was optimizing out some calls,
and we don't want that.
No actual code changes.
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*: fix everything which prevents above from building
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float_wrappers.c: add xxxWRAPPER1(func) macros. no code changes,
but makes this file much shorter.
text data bss dec hex filename
- 42504 188 4 42696 a6c8 lib/libm-0.9.30-svn.so
+ 42488 188 4 42680 a6b8 lib/libm-0.9.30-svn.so
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-83 ec 10 sub $0x10,%esp
-db 6c 24 14 fldt 0x14(%esp)
-dd 5c 24 08 fstpl 0x8(%esp)
-dd 44 24 08 fldl 0x8(%esp)
-dd 1c 24 fstpl (%esp)
-e8 fc ff ff ff call __GI_trunc
-83 c4 10 add $0x10,%esp
+db 6c 24 04 fldt 0x4(%esp)
+dd 5c 24 04 fstpl 0x4(%esp)
+e9 fc ff ff ff jmp __GI_trunc
c3 ret
text data bss dec hex filename
- 42749 176 4 42929 a7b1 lib/libm-0.9.30-svn.so
+ 42085 176 4 42265 a519 lib/libm-0.9.30-svn.so
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remove wrong casts to long double of long return values.
remove lots of empty lines.
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test/Rules.mak: don't pass target options to host build
test/math/basic-test.c: fix test build error
patching file test/unistd/errno.c: fix test build warning
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math support
- add rule to create preprocessor output for float- and long double math wrapper
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fix uclibc build if it is forcibly enabled
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