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*: remove checks of sigaction and sigprocmask results
in cases where they clearly can't fail:
sigaction(known_good_sig)
sigprocmask(known_good_how)
text data bss dec hex filename
- 393 4 0 397 18d libc/pwd_grp/lckpwdf.o
+ 382 4 0 386 182 libc/pwd_grp/lckpwdf.o
- 56 0 0 56 38 libc/signal/sigblock.o
+ 44 0 0 44 2c libc/signal/sigblock.o
- 211 0 0 211 d3 libc/signal/sigset.o
+ 202 0 0 202 ca libc/signal/sigset.o
- 56 0 0 56 38 libc/signal/sigsetmask.o
+ 44 0 0 44 2c libc/signal/sigsetmask.o
- 309 0 0 309 135 libc/unistd/sleep.o
+ 256 0 0 256 100 libc/unistd/sleep.o
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clarify uses of unoptimized sigXXX ops (they check signo),
use faster sigops where approproate.
text data bss dec hex filename
- 68 0 0 68 44 libc/signal/sighold.o
+ 63 0 0 63 3f libc/signal/sighold.o
- 114 0 0 114 72 libc/signal/sigintr.o
+ 110 0 0 110 6e libc/signal/sigintr.o
- 113 0 0 113 71 libc/signal/sigpause.o
+ 108 0 0 108 6c libc/signal/sigpause.o
- 68 0 0 68 44 libc/signal/sigrelse.o
+ 63 0 0 63 3f libc/signal/sigrelse.o
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fix _NSIG for it.
better document what's going on in sigaction().
seems to not induce any actual code changes (sans mips).
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text data bss dec hex filename
- 1179 13 2 1194 4aa libc/misc/syslog/syslog.o
+ 1165 13 2 1180 49c libc/misc/syslog/syslog.o
- 435 4 0 439 1b7 libc/pwd_grp/lckpwdf.o
+ 393 4 0 397 18d libc/pwd_grp/lckpwdf.o
- 38 0 0 38 26 libc/signal/sigandset.o
+ 32 0 0 32 20 libc/signal/sigandset.o
- 63 0 0 63 3f libc/signal/sigblock.o
+ 56 0 0 56 38 libc/signal/sigblock.o
- 22 0 0 22 16 libc/signal/sigempty.o
+ 20 0 0 20 14 libc/signal/sigempty.o
- 25 0 0 25 19 libc/signal/sigfillset.o
+ 20 0 0 20 14 libc/signal/sigfillset.o
- 34 0 0 34 22 libc/signal/sigisempty.o
+ 16 0 0 16 10 libc/signal/sigisempty.o
- 38 0 0 38 26 libc/signal/sigorset.o
+ 32 0 0 32 20 libc/signal/sigorset.o
- 119 0 0 119 77 libc/signal/sigpause.o
+ 113 0 0 113 71 libc/signal/sigpause.o
- 215 0 0 215 d7 libc/signal/sigset.o
+ 211 0 0 211 d3 libc/signal/sigset.o
- 63 0 0 63 3f libc/signal/sigsetmask.o
+ 56 0 0 56 38 libc/signal/sigsetmask.o
- 194 0 1 195 c3 libc/stdlib/abort.o
+ 183 0 1 184 b8 libc/stdlib/abort.o
- 323 0 0 323 143 libc/unistd/sleep.o
+ 309 0 0 309 135 libc/unistd/sleep.o
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gcc?
text data bss dec hex filename
- 38015 18096 8636 64747 fceb lib/libpthread-0.9.30-svn.so
+ 38001 18096 8636 64733 fcdd lib/libpthread-0.9.30-svn.so
- 274842 1835 19012 295689 48309 lib/libuClibc-0.9.30-svn.so
+ 274779 1835 19012 295626 482ca lib/libuClibc-0.9.30-svn.so
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text data bss dec hex filename
- 38457 18352 8636 65445 ffa5 lib/libpthread-0.9.30-svn.so
+ 38015 18096 8636 64747 fceb lib/libpthread-0.9.30-svn.so
- 8205 280 12 8497 2131 lib/libthread_db-0.9.30-svn.so
+ 8193 280 12 8485 2125 lib/libthread_db-0.9.30-svn.so
- 275208 1823 19132 296163 484e3 lib/libuClibc-0.9.30-svn.so
+ 274787 1823 19012 295622 482c6 lib/libuClibc-0.9.30-svn.so
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supports this feature. SH4 will use this in some aseembly files
for the NPTL implementation. Add now safely on trunk.
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
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This patch fixes position-independent executables (PIEs) for Thumb-2. In
Thumb assembly, instructions reading pc give a value 4 greater than the
address of the instruction, rather than 8 greater as in ARM mode, so the
offset to the GOT needs to have the right offset. (The Thumb-1 code
already gets this right; it's the code shared by ARM and Thumb-2 that
needs fixing.)
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linuxthreads.old/manager: pointless style fixes, no code changes
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(fixes build with locale enabled)
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Appears to build fine (several .configs tried)
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Will spare us quite some likely()/unlikely() occurances.
See http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html for details
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the kernel unmolested.
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Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
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This patch fixes the previous commit for clone on AVR32 arch, where the
function parameters where not updated after adding #include <sched.h>.
Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
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Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
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Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
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ldso and syscalls are __always_inline (the latter would need more cleanup)
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Closes #5644
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In issue #5554 Michael wrote:
The implementation of sigaction on i386 for older kernels makes the system call using an inline asm element with two flaws:
1. The asm is not marked as depending on the kact structure or modifying the koact structure. Thus, GCC is free to assume these structures need not be kept consistent, allowing it to remove all initialization of kact.
2. The asm allows the signal number to be provided as a memory reference. But this allows GCC to provide a stack-relative operand, which will break because the assembler saves %ebx on the stack before using that operand.
1 didn't use to be a problem in practice because GCC 4.2.* didn't seize the optimization opportunity. GCC 4.3.2, however, optimizes out the "kact.sa_flags = act->sa_flags | SA_RESTORER;" line, so that the kernel sees garbage in sa_flags. This can result in the kernel seeing the SA_RESETHAND flag, causing erratic behaviour in signal dependent programs.
2 becomes an issue if "-fomit-frame-pointer" is provided. In uClibc-0.9.29 it isn't, uClibc-0.9.30-rc2 does use the flag by default.
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Closes issue #5194
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