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musl: update to latest git to fix MIPS and PowerPC TLS issues

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Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 46134
This commit is contained in:
Felix Fietkau 2015-06-27 23:25:46 +00:00
parent 0aa351196a
commit 2475351cb1
1 changed files with 392 additions and 137 deletions
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529
toolchain/musl/patches/001-git-2015-06-20.patch → toolchain/musl/patches/001-git-2015-06-25.patch
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@ -1,20 +1,107 @@
From bafa38541e911806b74a1ab094a404bbdd692ade Mon Sep 17 00:00:00 2001
From: Steven Barth <steven@midlink.org>
Date: Sat, 20 Jun 2015 16:59:48 +0200
Subject: [PATCH] commit 55d061f031085f24d138664c897791aebe9a2fab Author: Rich
Felker <dalias@aerifal.cx> Date: Sat Jun 20 03:01:07 2015 +0000
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
commit 6ba5517a460c6c438f64d69464fdfc3269a4c91a
Author: Rich Felker <dalias@aerifal.cx>
Date: Thu Jun 25 22:22:00 2015 +0000
fix local-dynamic model TLS on mips and powerpc
the TLS ABI spec for mips, powerpc, and some other (presently
unsupported) RISC archs has the return value of __tls_get_addr offset
by +0x8000 and the result of DTPOFF relocations offset by -0x8000. I
had previously assumed this part of the ABI was actually just an
implementation detail, since the adjustments cancel out. however, when
the local dynamic model is used for accessing TLS that's known to be
in the same DSO, either of the following may happen:
1. the -0x8000 offset may already be applied to the argument structure
passed to __tls_get_addr at ld time, without any opportunity for
runtime relocations.
2. __tls_get_addr may be used with a zero offset argument to obtain a
base address for the module's TLS, to which the caller then applies
immediate offsets for individual objects accessed using the local
dynamic model. since the immediate offsets have the -0x8000 adjustment
applied to them, the base address they use needs to include the
+0x8000 offset.
it would be possible, but more complex, to store the pointers in the
dtv[] array with the +0x8000 offset pre-applied, to avoid the runtime
cost of adding 0x8000 on each call to __tls_get_addr. this change
could be made later if measurements show that it would help.
commit ce337daa00e42d4f2d9a4d9ae0ed51b20249d924
Author: Rich Felker <dalias@aerifal.cx>
Date: Tue Jun 23 04:03:42 2015 +0000
make dynamic linker work around MAP_FAILED mmap failure on nommu kernels
previously, loading of additional libraries beyond libc/ldso did not
work on nommu kernels, nor did loading programs via invocation of the
dynamic linker as a command.
commit a59341420fdedb288d9ff80e73609ae44e9cf258
Author: Rich Felker <dalias@aerifal.cx>
Date: Tue Jun 23 00:12:25 2015 +0000
reimplement strverscmp to fix corner cases
this interface is non-standardized and is a GNU invention, and as
such, our implementation should match the behavior of the GNU
function. one peculiarity the old implementation got wrong was the
handling of all-zero digit sequences: they are supposed to compare
greater than digit sequences of which they are a proper prefix, as in
009 < 00.
in addition, high bytes were treated with char signedness rather than
as unsigned. this was wrong regardless of what the GNU function does
since the resulting order relation varied by arch.
the new strverscmp implementation makes explicit the cases where the
order differs from what strcmp would produce, of which there are only
two.
commit 153e952e1a688859d7095345b17e6c1df74a295c
Author: Rich Felker <dalias@aerifal.cx>
Date: Mon Jun 22 20:33:28 2015 +0000
fix regression/typo that disabled __simple_malloc when calloc is used
commit ba819787ee93ceae94efd274f7849e317c1bff58 introduced this
regression. since the __malloc0 weak alias was not properly provided
by __simple_malloc, use of calloc forced the full malloc to be linked.
commit ba819787ee93ceae94efd274f7849e317c1bff58
Author: Rich Felker <dalias@aerifal.cx>
Date: Mon Jun 22 18:50:09 2015 +0000
fix calloc when __simple_malloc implementation is used
previously, calloc's implementation encoded assumptions about the
implementation of malloc, accessing a size_t word just prior to the
allocated memory to determine if it was obtained by mmap to optimize
out the zero-filling. when __simple_malloc is used (static linking a
program with no realloc/free), it doesn't matter if the result of this
check is wrong, since all allocations are zero-initialized anyway. but
the access could be invalid if it crosses a page boundary or if the
pointer is not sufficiently aligned, which can happen for very small
allocations.
this patch fixes the issue by moving the zero-fill logic into malloc.c
with the full malloc, as a new function named __malloc0, which is
provided by a weak alias to __simple_malloc (which always gives
zero-filled memory) when the full malloc is not in use.
commit 55d061f031085f24d138664c897791aebe9a2fab
Author: Rich Felker <dalias@aerifal.cx>
Date: Sat Jun 20 03:01:07 2015 +0000
provide __stack_chk_fail_local in libc.a
this symbol is needed only on archs where the PLT call ABI is klunky,
and only for position-independent code compiled with stack protector.
thus references usually only appear in shared libraries or PIE
executables, but they can also appear when linking statically if some
of the object files being linked were built as PIC/PIE.
normally libssp_nonshared.a from the compiler toolchain should provide
__stack_chk_fail_local, but reportedly it appears prior to -lc in the
link order, thus failing to satisfy references from libc itself (which
@ -26,7 +113,7 @@ Author: Rich Felker <dalias@aerifal.cx>
Date: Sat Jun 20 02:54:30 2015 +0000
work around mips detached thread exit breakage due to kernel regression
linux kernel commit 46e12c07b3b9603c60fc1d421ff18618241cb081 caused
the mips syscall mechanism to fail with EFAULT when the userspace
stack pointer is invalid, breaking __unmapself used for detached
@ -39,7 +126,7 @@ Author: Rich Felker <dalias@aerifal.cx>
Date: Wed Jun 17 17:21:46 2015 +0000
ignore ENOSYS error from mprotect in pthread_create and dynamic linker
this error simply indicated a system without memory protection (NOMMU)
and should not cause failure in the caller.
@ -48,16 +135,16 @@ Author: Rich Felker <dalias@aerifal.cx>
Date: Tue Jun 16 15:25:02 2015 +0000
switch to using trap number 31 for syscalls on sh
nominally the low bits of the trap number on sh are the number of
syscall arguments, but they have never been used by the kernel, and
some code making syscalls does not even know the number of arguments
and needs to pass an arbitrary high number anyway.
sh3/sh4 traditionally used the trap range 16-31 for syscalls, but part
of this range overlapped with hardware exceptions/interrupts on sh2
hardware, so an incompatible range 32-47 was chosen for sh2.
using trap number 31 everywhere, since it's in the existing sh3/sh4
range and does not conflict with sh2 hardware, is a proposed
unification of the kernel syscall convention that will allow binaries
@ -71,13 +158,13 @@ Author: Rich Felker <dalias@aerifal.cx>
Date: Tue Jun 16 14:55:06 2015 +0000
switch sh port's __unmapself to generic version when running on sh2/nommu
due to the way the interrupt and syscall trap mechanism works,
userspace on sh2 must never set the stack pointer to an invalid value.
thus, the approach used on most archs, where __unmapself executes with
no stack for the interval between SYS_munmap and SYS_exit, is not
viable on sh2.
in order not to pessimize sh3/sh4, the sh asm version of __unmapself
is not removed. instead it's renamed and redirected through code that
calls either the generic (safe) __unmapself or the sh3/sh4 asm,
@ -88,20 +175,20 @@ Author: Rich Felker <dalias@aerifal.cx>
Date: Tue Jun 16 14:28:30 2015 +0000
add support for sh2 interrupt-masking-based atomics to sh port
the sh2 target is being considered an ISA subset of sh3/sh4, in the
sense that binaries built for sh2 are intended to be usable on later
cpu models/kernels with mmu support. so rather than hard-coding
sh2-specific atomics, the runtime atomic selection mechanisms that was
already in place has been extended to add sh2 atomics.
at this time, the sh2 atomics are not SMP-compatible; since the ISA
lacks actual atomic operations, the new code instead masks interrupts
for the duration of the atomic operation, producing an atomic result
on single-core. this is only possible because the kernel/hardware does
not impose protections against userspace doing so. additional changes
will be needed to support future SMP systems.
care has been taken to avoid producing significant additional code
size in the case where it's known at compile-time that the target is
not sh2 and does not need sh2-specific code.
@ -111,15 +198,15 @@ Author: Rich Felker <dalias@aerifal.cx>
Date: Tue Jun 16 07:11:19 2015 +0000
refactor stdio open file list handling, move it out of global libc struct
functions which open in-memory FILE stream variants all shared a tail
with __fdopen, adding the FILE structure to stdio's open file list.
replacing this common tail with a function call reduces code size and
duplication of logic. the list is also partially encapsulated now.
function signatures were chosen to facilitate tail call optimization
and reduce the need for additional accessor functions.
with these changes, static linked programs that do not use stdio no
longer have an open file list at all.
@ -128,7 +215,7 @@ Author: Rich Felker <dalias@aerifal.cx>
Date: Tue Jun 16 06:18:00 2015 +0000
byte-based C locale, phase 3: make MB_CUR_MAX variable to activate code
this patch activates the new byte-based C locale (high bytes treated
as abstract code unit "characters" rather than decoded as multibyte
characters) by making the value of MB_CUR_MAX depend on the active
@ -140,25 +227,25 @@ Author: Rich Felker <dalias@aerifal.cx>
Date: Tue Jun 16 05:35:31 2015 +0000
byte-based C locale, phase 2: stdio and iconv (multibyte callers)
this patch adjusts libc components which use the multibyte functions
internally, and which depend on them operating in a particular
encoding, to make the appropriate locale changes before calling them
and restore the calling thread's locale afterwards. activating the
byte-based C locale without these changes would cause regressions in
stdio and iconv.
in the case of iconv, the current implementation was simply using the
multibyte functions as UTF-8 conversions. setting a multibyte UTF-8
locale for the duration of the iconv operation allows the code to
continue working.
in the case of stdio, POSIX requires that FILE streams have an
encoding rule bound at the time of setting wide orientation. as long
as all locales, including the C locale, used the same encoding,
treating high bytes as UTF-8, there was no need to store an encoding
rule as part of the stream's state.
a new locale field in the FILE structure points to the locale that
should be made active during fgetwc/fputwc/ungetwc on the stream. it
cannot point to the locale active at the time the stream becomes
@ -174,14 +261,14 @@ Author: Rich Felker <dalias@aerifal.cx>
Date: Tue Jun 16 04:44:17 2015 +0000
byte-based C locale, phase 1: multibyte character handling functions
this patch makes the functions which work directly on multibyte
characters treat the high bytes as individual abstract code units
rather than as multibyte sequences when MB_CUR_MAX is 1. since
MB_CUR_MAX is presently defined as a constant 4, all of the new code
added is dead code, and optimizing compilers' code generation should
not be affected at all. a future commit will activate the new code.
as abstract code units, bytes 0x80 to 0xff are represented by wchar_t
values 0xdf80 to 0xdfff, at the end of the surrogates range. this
ensures that they will never be misinterpreted as Unicode characters,
@ -196,7 +283,7 @@ Author: Rich Felker <dalias@aerifal.cx>
Date: Tue Jun 16 04:21:38 2015 +0000
fix btowc corner case
btowc is required to interpret its argument by conversion to unsigned
char, unless the argument is equal to EOF. since the conversion to
produces a non-character value anyway, we can just unconditionally
@ -207,7 +294,7 @@ Author: Szabolcs Nagy <nsz@port70.net>
Date: Wed Jun 3 10:32:14 2015 +0100
arm: add vdso support
vdso will be available on arm in linux v4.2, the user-space code
for it is in kernel commit 8512287a8165592466cb9cb347ba94892e9c56a5
@ -216,16 +303,16 @@ Author: Rich Felker <dalias@aerifal.cx>
Date: Sun Jun 14 01:59:02 2015 +0000
refactor malloc's expand_heap to share with __simple_malloc
this extends the brk/stack collision protection added to full malloc
in commit 276904c2f6bde3a31a24ebfa201482601d18b4f9 to also protect the
__simple_malloc function used in static-linked programs that don't
reference the free function.
it also extends support for using mmap when brk fails, which full
malloc got in commit 5446303328adf4b4e36d9fba21848e6feb55fab4, to
__simple_malloc.
since __simple_malloc may expand the heap by arbitrarily large
increments, the stack collision detection is enhanced to detect
interval overlap rather than just proximity of a single address to the
@ -239,7 +326,7 @@ Author: Rich Felker <dalias@aerifal.cx>
Date: Sat Jun 13 20:53:02 2015 +0000
remove cancellation points in stdio
commit 58165923890865a6ac042fafce13f440ee986fd9 added these optional
cancellation points on the basis that cancellable stdio could be
useful, to unblock threads stuck on stdio operations that will never
@ -248,7 +335,7 @@ Date: Sat Jun 13 20:53:02 2015 +0000
cancellation is acted upon, discarding knowledge of any partial data
transfer already completed. our implementation exhibited this behavior
and was thus non-conforming.
in addition to improving correctness, removing these cancellation
points moderately reduces code size, and should significantly improve
performance on i386, where sysenter/syscall instructions can be used
@ -259,7 +346,7 @@ Author: Rich Felker <dalias@aerifal.cx>
Date: Sat Jun 13 05:17:16 2015 +0000
fix idiom for setting stdio stream orientation to wide
the old idiom, f->mode |= f->mode+1, was adapted from the idiom for
setting byte orientation, f->mode |= f->mode-1, but the adaptation was
incorrect. unless the stream was alreasdy set byte-oriented, this code
@ -275,7 +362,7 @@ Author: Rich Felker <dalias@aerifal.cx>
Date: Sat Jun 13 04:42:38 2015 +0000
add printing of null %s arguments as "(null)" in wide printf
this is undefined, but supported in our implementation of the normal
printf, so for consistency the wide variant should support it too.
@ -296,11 +383,11 @@ Author: Rich Felker <dalias@aerifal.cx>
Date: Wed Jun 10 02:27:40 2015 +0000
implement arch-generic version of __unmapself
this can be used to put off writing an asm version of __unmapself for
new archs, or as a permanent solution on archs where it's not
practical or even possible to run momentarily with no stack.
the concept here is simple: the caller takes a lock on a global shared
stack and uses it to make the munmap and exit syscalls. the only trick
is unlocking, which must be done after the thread exits, and this is
@ -312,14 +399,14 @@ Author: Rich Felker <dalias@aerifal.cx>
Date: Tue Jun 9 20:30:35 2015 +0000
in malloc, refuse to use brk if it grows into stack
the linux/nommu fdpic ELF loader sets up the brk range to overlap
entirely with the main thread's stack (but growing from opposite
ends), so that the resulting failure mode for malloc is not to return
a null pointer but to start returning pointers to memory that overlaps
with the caller's stack. needless to say this extremely dangerous and
makes brk unusable.
since it's non-trivial to detect execution environments that might be
affected by this kernel bug, and since the severity of the bug makes
any sort of detection that might yield false-negatives unsafe, we
@ -329,7 +416,7 @@ Date: Tue Jun 9 20:30:35 2015 +0000
arbitrary gap distance of 8 MB is imposed, chosen to be larger than
linux default main-thread stack reservation sizes and larger than any
reasonable stack configuration on nommu.
the effeciveness of this patch relies on an assumption that the amount
by which the brk is being grown is smaller than the gap limit, which
is always true for malloc's use of brk. reliance on this assumption is
@ -340,14 +427,14 @@ Author: Rich Felker <dalias@aerifal.cx>
Date: Tue Jun 9 20:09:27 2015 +0000
fix spurious errors from pwd/grp functions when nscd backend is absent
for several pwd/grp functions, the only way the caller can distinguish
between a successful negative result ("no such user/group") and an
internal error is by clearing errno before the call and checking errno
afterwards. the nscd backend support code correctly simulated a
not-found response on systems where such a backend is not running, but
failed to restore errno.
this commit also fixed an outdated/incorrect comment.
commit 75ce4503950621b11fcc7f1fd1187dbcf3cde312
@ -355,7 +442,7 @@ Author: Rich Felker <dalias@aerifal.cx>
Date: Sun Jun 7 20:55:23 2015 +0000
fix regression in pre-v7 arm on kernels with kuser helper removed
the arm atomics/TLS runtime selection code is called from
__set_thread_area and depends on having libc.auxv and __hwcap
available. commit 71f099cb7db821c51d8f39dfac622c61e54d794c moved the
@ -363,9 +450,9 @@ Date: Sun Jun 7 20:55:23 2015 +0000
before this data is made available, causing the runtime detection code
to always see __hwcap as zero and thereby select the atomics/TLS
implementations based on kuser helper.
upcoming work on superh will use similar runtime detection.
ideally this early-init code should be cleanly refactored and shared
between the dynamic linker and static-linked startup.
@ -380,7 +467,7 @@ Author: Rich Felker <dalias@aerifal.cx>
Date: Sun Jun 7 02:59:49 2015 +0000
remove redefinition of MB_CUR_MAX in locale_impl.h
unless/until the byte-based C locale is implemented, defining
MB_CUR_MAX to 1 in the C locale is wrong. no internal code currently
uses the MB_CUR_MAX macro, but having it defined inconsistently is
@ -404,7 +491,7 @@ Author: Rich Felker <dalias@aerifal.cx>
Date: Sat Jun 6 18:16:22 2015 +0000
add macro version of ctype.h isascii function
presumably internal code (ungetwc and fputwc) was written assuming a
macro implementation existed; otherwise use of isascii is just a
pessimization.
@ -414,7 +501,7 @@ Author: Rich Felker <dalias@aerifal.cx>
Date: Sat Jun 6 18:11:17 2015 +0000
remove invalid skip of locking in ungetwc
aside from being invalid, the early check only optimized the error
case, and likely pessimized the common case by separating the
two branches on isascii(c) at opposite ends of the function.
@ -424,82 +511,9 @@ Author: Timo Teräs <timo.teras@iki.fi>
Date: Fri Jun 5 10:39:42 2015 +0300
fix uselocale((locale_t)0) not to modify locale
commit 68630b55c0c7219fe9df70dc28ffbf9efc8021d8 made the new locale to
be assigned unconditonally resulting in crashes later on.
---
arch/arm/syscall_arch.h | 4 ++
arch/sh/src/__set_thread_area.c | 34 ++++++++++++++++
arch/sh/src/__unmapself.c | 19 +++++++++
arch/sh/src/atomic.c | 72 ++++++++++++++++++++++++++++++----
arch/sh/src/sh_atomic.h | 15 +++++++
arch/sh/syscall_arch.h | 2 +-
include/ctype.h | 1 +
include/stdlib.h | 3 +-
src/ctype/__ctype_get_mb_cur_max.c | 5 ++-
src/ctype/isascii.c | 1 +
src/env/__stack_chk_fail.c | 4 ++
src/internal/libc.h | 2 -
src/internal/locale_impl.h | 12 ++++++
src/internal/sh/syscall.s | 2 +-
src/internal/stdio_impl.h | 6 ++-
src/ldso/dynlink.c | 37 +++++++++---------
src/locale/c_locale.c | 15 +++++++
src/locale/iconv.c | 6 +++
src/locale/langinfo.c | 3 +-
src/locale/locale_map.c | 12 +-----
src/locale/newlocale.c | 15 ++-----
src/locale/uselocale.c | 4 +-
src/malloc/expand_heap.c | 72 ++++++++++++++++++++++++++++++++++
src/malloc/lite_malloc.c | 49 ++++++++++++-----------
src/malloc/malloc.c | 80 ++++++++++++++------------------------
src/multibyte/btowc.c | 5 ++-
src/multibyte/internal.h | 7 ++++
src/multibyte/mbrtowc.c | 2 +
src/multibyte/mbsrtowcs.c | 19 +++++++++
src/multibyte/mbtowc.c | 2 +
src/multibyte/wcrtomb.c | 9 +++++
src/multibyte/wctob.c | 4 +-
src/passwd/nscd_query.c | 12 ++++--
src/process/sh/vfork.s | 23 +++++++++++
src/regex/fnmatch.c | 3 +-
src/signal/sh/restore.s | 4 +-
src/stdio/__fdopen.c | 8 +---
src/stdio/__stdio_exit.c | 3 +-
src/stdio/__stdio_read.c | 11 +-----
src/stdio/__stdio_write.c | 14 +------
src/stdio/fclose.c | 6 +--
src/stdio/fflush.c | 5 +--
src/stdio/fgetwc.c | 15 +++++--
src/stdio/fmemopen.c | 8 +---
src/stdio/fopen.c | 2 +-
src/stdio/fputwc.c | 7 +++-
src/stdio/fputws.c | 7 +++-
src/stdio/fwide.c | 11 +++---
src/stdio/ofl.c | 16 ++++++++
src/stdio/ofl_add.c | 11 ++++++
src/stdio/open_memstream.c | 8 +---
src/stdio/open_wmemstream.c | 8 +---
src/stdio/ungetwc.c | 18 ++++-----
src/stdio/vfwprintf.c | 5 ++-
src/stdio/vfwscanf.c | 2 +-
src/thread/__unmapself.c | 29 ++++++++++++++
src/thread/mips/__unmapself.s | 1 +
src/thread/pthread_create.c | 6 ++-
src/thread/sh/__set_thread_area.s | 6 ---
src/thread/sh/__unmapself.s | 10 ++---
src/thread/sh/clone.s | 4 +-
src/thread/sh/syscall_cp.s | 2 +-
src/unistd/sh/pipe.s | 2 +-
63 files changed, 548 insertions(+), 242 deletions(-)
create mode 100644 arch/sh/src/__set_thread_area.c
create mode 100644 arch/sh/src/__unmapself.c
create mode 100644 arch/sh/src/sh_atomic.h
create mode 100644 src/locale/c_locale.c
create mode 100644 src/malloc/expand_heap.c
create mode 100644 src/process/sh/vfork.s
create mode 100644 src/stdio/ofl.c
create mode 100644 src/stdio/ofl_add.c
diff --git a/arch/arm/syscall_arch.h b/arch/arm/syscall_arch.h
index 199ad2a..64461ec 100644
@ -513,6 +527,30 @@ index 199ad2a..64461ec 100644
+#define VDSO_USEFUL
+#define VDSO_CGT_SYM "__vdso_clock_gettime"
+#define VDSO_CGT_VER "LINUX_2.6"
diff --git a/arch/mips/pthread_arch.h b/arch/mips/pthread_arch.h
index f8e35ae..904a248 100644
--- a/arch/mips/pthread_arch.h
+++ b/arch/mips/pthread_arch.h
@@ -13,4 +13,6 @@ static inline struct pthread *__pthread_self()
#define TLS_ABOVE_TP
#define TP_ADJ(p) ((char *)(p) + sizeof(struct pthread) + 0x7000)
+#define DTP_OFFSET 0x8000
+
#define CANCEL_REG_IP (3-(union {int __i; char __b;}){1}.__b)
diff --git a/arch/powerpc/pthread_arch.h b/arch/powerpc/pthread_arch.h
index 4115ec8..1cbfc22 100644
--- a/arch/powerpc/pthread_arch.h
+++ b/arch/powerpc/pthread_arch.h
@@ -12,6 +12,8 @@ static inline struct pthread *__pthread_self()
#define TLS_ABOVE_TP
#define TP_ADJ(p) ((char *)(p) + sizeof(struct pthread) + 0x7000)
+#define DTP_OFFSET 0x8000
+
// offset of the PC register in mcontext_t, divided by the system wordsize
// the kernel calls the ip "nip", it's the first saved value after the 32
// GPRs.
diff --git a/arch/sh/src/__set_thread_area.c b/arch/sh/src/__set_thread_area.c
new file mode 100644
index 0000000..1d3e022
@ -854,6 +892,21 @@ index 9b8385e..f5e4d9b 100644
#define MB_CUR_MAX (CURRENT_UTF8 ? 4 : 1)
+
+#endif
diff --git a/src/internal/pthread_impl.h b/src/internal/pthread_impl.h
index e29f9c8..3890bb5 100644
--- a/src/internal/pthread_impl.h
+++ b/src/internal/pthread_impl.h
@@ -94,6 +94,10 @@ struct __timer {
#define CANARY canary
#endif
+#ifndef DTP_OFFSET
+#define DTP_OFFSET 0
+#endif
+
#define SIGTIMER 32
#define SIGCANCEL 33
#define SIGSYNCCALL 34
diff --git a/src/internal/sh/syscall.s b/src/internal/sh/syscall.s
index d00712a..331918a 100644
--- a/src/internal/sh/syscall.s
@ -892,10 +945,62 @@ index e1325fe..0dd7fb5 100644
#define feof(f) ((f)->flags & F_EOF)
#define ferror(f) ((f)->flags & F_ERR)
diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
index 42b056d..7e56693 100644
index 42b056d..d2a7249 100644
--- a/src/ldso/dynlink.c
+++ b/src/ldso/dynlink.c
@@ -536,7 +536,8 @@ static void *map_library(int fd, struct dso *dso)
@@ -337,7 +337,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
*reloc_addr = def.dso->tls_id;
break;
case REL_DTPOFF:
- *reloc_addr = tls_val + addend;
+ *reloc_addr = tls_val + addend - DTP_OFFSET;
break;
#ifdef TLS_ABOVE_TP
case REL_TPOFF:
@@ -423,6 +423,28 @@ static void reclaim_gaps(struct dso *dso)
}
}
+static void *mmap_fixed(void *p, size_t n, int prot, int flags, int fd, off_t off)
+{
+ char *q = mmap(p, n, prot, flags, fd, off);
+ if (q != MAP_FAILED || errno != EINVAL) return q;
+ /* Fallbacks for MAP_FIXED failure on NOMMU kernels. */
+ if (flags & MAP_ANONYMOUS) {
+ memset(p, 0, n);
+ return p;
+ }
+ ssize_t r;
+ if (lseek(fd, off, SEEK_SET) < 0) return MAP_FAILED;
+ for (q=p; n; q+=r, off+=r, n-=r) {
+ r = read(fd, q, n);
+ if (r < 0 && errno != EINTR) return MAP_FAILED;
+ if (!r) {
+ memset(q, 0, n);
+ break;
+ }
+ }
+ return p;
+}
+
static void *map_library(int fd, struct dso *dso)
{
Ehdr buf[(896+sizeof(Ehdr))/sizeof(Ehdr)];
@@ -524,19 +546,20 @@ static void *map_library(int fd, struct dso *dso)
prot = (((ph->p_flags&PF_R) ? PROT_READ : 0) |
((ph->p_flags&PF_W) ? PROT_WRITE: 0) |
((ph->p_flags&PF_X) ? PROT_EXEC : 0));
- if (mmap(base+this_min, this_max-this_min, prot, MAP_PRIVATE|MAP_FIXED, fd, off_start) == MAP_FAILED)
+ if (mmap_fixed(base+this_min, this_max-this_min, prot, MAP_PRIVATE|MAP_FIXED, fd, off_start) == MAP_FAILED)
goto error;
if (ph->p_memsz > ph->p_filesz) {
size_t brk = (size_t)base+ph->p_vaddr+ph->p_filesz;
size_t pgbrk = brk+PAGE_SIZE-1 & -PAGE_SIZE;
memset((void *)brk, 0, pgbrk-brk & PAGE_SIZE-1);
- if (pgbrk-(size_t)base < this_max && mmap((void *)pgbrk, (size_t)base+this_max-pgbrk, prot, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) == MAP_FAILED)
+ if (pgbrk-(size_t)base < this_max && mmap_fixed((void *)pgbrk, (size_t)base+this_max-pgbrk, prot, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) == MAP_FAILED)
goto error;
}
}
for (i=0; ((size_t *)(base+dyn))[i]; i+=2)
if (((size_t *)(base+dyn))[i]==DT_TEXTREL) {
@ -905,7 +1010,7 @@ index 42b056d..7e56693 100644
goto error;
break;
}
@@ -927,7 +928,8 @@ static void reloc_all(struct dso *p)
@@ -927,7 +950,8 @@ static void reloc_all(struct dso *p)
do_relocs(p, (void *)(p->base+dyn[DT_RELA]), dyn[DT_RELASZ], 3);
if (head != &ldso && p->relro_start != p->relro_end &&
@ -915,7 +1020,25 @@ index 42b056d..7e56693 100644
error("Error relocating %s: RELRO protection failed: %m",
p->name);
if (runtime) longjmp(*rtld_fail, 1);
@@ -1192,6 +1194,17 @@ _Noreturn void __dls3(size_t *sp)
@@ -1078,7 +1102,7 @@ void *__tls_get_new(size_t *v)
__block_all_sigs(&set);
if (v[0]<=(size_t)self->dtv[0]) {
__restore_sigs(&set);
- return (char *)self->dtv[v[0]]+v[1];
+ return (char *)self->dtv[v[0]]+v[1]+DTP_OFFSET;
}
/* This is safe without any locks held because, if the caller
@@ -1111,7 +1135,7 @@ void *__tls_get_new(size_t *v)
if (p->tls_id == v[0]) break;
}
__restore_sigs(&set);
- return mem + v[1];
+ return mem + v[1] + DTP_OFFSET;
}
static void update_tls_size()
@@ -1192,6 +1216,17 @@ _Noreturn void __dls3(size_t *sp)
char **argv_orig = argv;
char **envp = argv+argc+1;
@ -933,7 +1056,7 @@ index 42b056d..7e56693 100644
/* Setup early thread pointer in builtin_tls for ldso/libc itself to
* use during dynamic linking. If possible it will also serve as the
* thread pointer at runtime. */
@@ -1200,25 +1213,11 @@ _Noreturn void __dls3(size_t *sp)
@@ -1200,25 +1235,11 @@ _Noreturn void __dls3(size_t *sp)
a_crash();
}
@ -1117,6 +1240,36 @@ index b70a0c1..0fc5ecb 100644
return old == global ? LC_GLOBAL_LOCALE : old;
}
diff --git a/src/malloc/calloc.c b/src/malloc/calloc.c
index c3dfb47..436c0b0 100644
--- a/src/malloc/calloc.c
+++ b/src/malloc/calloc.c
@@ -1,22 +1,13 @@
#include <stdlib.h>
#include <errno.h>
+void *__malloc0(size_t);
+
void *calloc(size_t m, size_t n)
{
- void *p;
- size_t *z;
if (n && m > (size_t)-1/n) {
errno = ENOMEM;
return 0;
}
- n *= m;
- p = malloc(n);
- if (!p) return 0;
- /* Only do this for non-mmapped chunks */
- if (((size_t *)p)[-1] & 7) {
- /* Only write words that are not already zero */
- m = (n + sizeof *z - 1)/sizeof *z;
- for (z=p; m; m--, z++) if (*z) *z=0;
- }
- return p;
+ return __malloc0(n * m);
}
diff --git a/src/malloc/expand_heap.c b/src/malloc/expand_heap.c
new file mode 100644
index 0000000..d8c0be7
@ -1196,10 +1349,10 @@ index 0000000..d8c0be7
+ return area;
+}
diff --git a/src/malloc/lite_malloc.c b/src/malloc/lite_malloc.c
index 7643fc2..008549d 100644
index 7643fc2..09ac575 100644
--- a/src/malloc/lite_malloc.c
+++ b/src/malloc/lite_malloc.c
@@ -4,43 +4,46 @@
@@ -4,43 +4,47 @@
#include <errno.h>
#include "libc.h"
@ -1269,8 +1422,9 @@ index 7643fc2..008549d 100644
}
weak_alias(__simple_malloc, malloc);
+weak_alias(__simple_malloc, __malloc0);
diff --git a/src/malloc/malloc.c b/src/malloc/malloc.c
index d4de2dc..290fda1 100644
index d4de2dc..eb68d55 100644
--- a/src/malloc/malloc.c
+++ b/src/malloc/malloc.c
@@ -13,7 +13,6 @@
@ -1394,6 +1548,24 @@ index d4de2dc..290fda1 100644
}
static int adjust_size(size_t *n)
@@ -378,6 +356,17 @@ void *malloc(size_t n)
return CHUNK_TO_MEM(c);
}
+void *__malloc0(size_t n)
+{
+ void *p = malloc(n);
+ if (p && !IS_MMAPPED(MEM_TO_CHUNK(p))) {
+ size_t *z;
+ n = (n + sizeof *z - 1)/sizeof *z;
+ for (z=p; n; n--, z++) if (*z) *z=0;
+ }
+ return p;
+}
+
void *realloc(void *p, size_t n)
{
struct chunk *self, *next;
diff --git a/src/multibyte/btowc.c b/src/multibyte/btowc.c
index 9d2c3b1..8acd0a2 100644
--- a/src/multibyte/btowc.c
@ -2106,6 +2278,92 @@ index ac5c2c2..223aad4 100644
for (p=fmt; *p; p++) {
diff --git a/src/string/strverscmp.c b/src/string/strverscmp.c
index 6f37cc6..4daf276 100644
--- a/src/string/strverscmp.c
+++ b/src/string/strverscmp.c
@@ -2,40 +2,33 @@
#include <ctype.h>
#include <string.h>
-int strverscmp(const char *l, const char *r)
+int strverscmp(const char *l0, const char *r0)
{
- int haszero=1;
- while (*l==*r) {
- if (!*l) return 0;
+ const unsigned char *l = (const void *)l0;
+ const unsigned char *r = (const void *)r0;
+ size_t i, dp, j;
+ int z = 1;
- if (*l=='0') {
- if (haszero==1) {
- haszero=0;
- }
- } else if (isdigit(*l)) {
- if (haszero==1) {
- haszero=2;
- }
- } else {
- haszero=1;
- }
- l++; r++;
+ /* Find maximal matching prefix and track its maximal digit
+ * suffix and whether those digits are all zeros. */
+ for (dp=i=0; l[i]==r[i]; i++) {
+ int c = l[i];
+ if (!c) return 0;
+ if (!isdigit(c)) dp=i+1, z=1;
+ else if (c!='0') z=0;
}
- if (haszero==1 && (*l=='0' || *r=='0')) {
- haszero=0;
- }
- if ((isdigit(*l) && isdigit(*r) ) && haszero) {
- size_t lenl=0, lenr=0;
- while (isdigit(l[lenl]) ) lenl++;
- while (isdigit(r[lenr]) ) lenr++;
- if (lenl==lenr) {
- return (*l - *r);
- } else if (lenl>lenr) {
- return 1;
- } else {
- return -1;
- }
- } else {
- return (*l - *r);
+
+ if (l[dp]!='0' && r[dp]!='0') {
+ /* If we're not looking at a digit sequence that began
+ * with a zero, longest digit string is greater. */
+ for (j=i; isdigit(l[j]); j++)
+ if (!isdigit(r[j])) return 1;
+ if (isdigit(r[j])) return -1;
+ } else if (z && dp<i && (isdigit(l[i]) || isdigit(r[i]))) {
+ /* Otherwise, if common prefix of digit sequence is
+ * all zeros, digits order less than non-digits. */
+ return (unsigned char)(l[i]-'0') - (unsigned char)(r[i]-'0');
}
+
+ return l[i] - r[i];
}
diff --git a/src/thread/__tls_get_addr.c b/src/thread/__tls_get_addr.c
index 3633396..84a413d 100644
--- a/src/thread/__tls_get_addr.c
+++ b/src/thread/__tls_get_addr.c
@@ -8,9 +8,9 @@ void *__tls_get_addr(size_t *v)
__attribute__((__visibility__("hidden")))
void *__tls_get_new(size_t *);
if (v[0]<=(size_t)self->dtv[0])
- return (char *)self->dtv[v[0]]+v[1];
+ return (char *)self->dtv[v[0]]+v[1]+DTP_OFFSET;
return __tls_get_new(v);
#else
- return (char *)self->dtv[1]+v[1];
+ return (char *)self->dtv[1]+v[1]+DTP_OFFSET;
#endif
}
diff --git a/src/thread/__unmapself.c b/src/thread/__unmapself.c
index e69de29..1d3bee1 100644
--- a/src/thread/__unmapself.c
@ -2263,6 +2521,3 @@ index d865ae3..46c4908 100644
! work around hardware bug
or r0, r0
--
2.1.4