| Commit message (Collapse) | Author | Age | Files | Lines |
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Support building three variants of 32-bit RISC-V glibc as follows:
- riscv32-linux-gnu-rv32imac-ilp32
- riscv32-linux-gnu-rv32imafdc-ilp32
- riscv32-linux-gnu-rv32imafdc-ilp32d
Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
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This patch lays out the top-level organisation of the RISC-V 32-bit port.
It provides all the Implies files as well as various other fragments of
the build infrastructure.
Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
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Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
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Specify the minimum kernel version for RISC-V 32-bit as the 5.4 kernel.
We require this commit: "waitid: Add support for waiting for the current
process group" for the kernel as it adds support for the P_PGID id for
the waitid syscall. Without this patch we can't replace the wait4
syscall on 64-bit time_t only systems.
Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
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Conversions from a float to a long long on 32-bit RISC-V (RV32) may not
raise the correct exceptions on overflow, it also may raise spurious
"inexact" exceptions on non overflow cases. This patch fixes the
problem, similarly to the fix for MIPS, ARM and S390.
Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
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Add a libm-test-ulps for RV32, this is the same as the RV64 one.
This dosn't match what is generated by running `make regen-ulps` on RV32
QEMU, but the current in tree RV64 doesn't match that either.
Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
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Use the update-abi Make target to generate the abilist for RV32.
Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
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This patch adds support for hardware floating-point support for the
RV32IF and RV32IFD platforms.
Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
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This patch adds the ABI implementation for 32-bit RISC-V. It contains
the Linux-specific and RISC-V architecture code.
Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
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Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
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With RV32 support the list of possible RISC-V system directories
increases to:
- /lib64/lp64d
- /lib64/lp64
- /lib32/ilp32d
- /lib32/ilp32
- /lib (only ld.so)
This patch changes the add_system_dir () macro to support the new ilp32d
and ilp32 directories for RV32. While refactoring this code let's split
out the confusing if statements into a loop to make it easier to
understand and extend.
Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
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Add the LD_SO_ABI definition for RISC-V 32-bit.
Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
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Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
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sysdep.h redefines only the syscall where the generic implementation
still does not have actual 64-bit time_t support:
/* Workarounds for generic code needing to handle 64-bit time_t. */
/* Fix sysdeps/unix/sysv/linux/clock_getcpuclockid.c. */
#define __NR_clock_getres __NR_clock_getres_time64
/* Fix sysdeps/nptl/lowlevellock-futex.h. */
#define __NR_futex __NR_futex_time64
[...]
This patch also adds a comment that it is a workaround to handle 64-bit
time_t and on each #define comment for which implementation it intends
to.
Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
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Remove a duplicate inclusion of <sysdeps/unix/sysdep.h> which is already
pulled via <sysdeps/unix/sysv/linux/generic/sysdep.h>, and the inclusion
of <errno.h> whose definition of `__set_errno' is not needed here.
Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
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Using the original glibc headers under bits/ let's make small
modifications to use 64-bit time_t and off_t for both RV32 and RV64.
For the typesizes.h, here are justifications for the changes from the
generic version (based on Arnd's very helpful feedback):
- All the !__USE_FILE_OFFSET64 types (__off_t, __ino_t, __rlim_t, ...)
are changed to match the 64-bit replacements.
- __time_t is defined to 64 bit, but no __time64_t is added. This makes
sense as we don't have the time64 support for other 32-bit
architectures yet, and it will be easy to change when that happens.
- __suseconds_t is 64-bit. This matches what we use the kernel ABI for
the few drivers that are relying on 'struct timeval' input arguments
in ioctl, as well as the adjtimex system call. It means that timeval
has to be defined without the padding, unlike timespec, which needs
padding.
Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
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It's possible that although __OFF_T_MATCHES_OFF64_T is defined the
included the relevent header file. This results in a io/tst-lockf
failure for RV32 by calling the non 64-bit version of lockf. This
patch fixes the failure by including bits/types.h.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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The _sys_errlist and _sys_siglist symbols are deprecated since 2.32.
This patch adds a TEST_COMPAT check around the tests. This fixes test
failures on new architectures (such as RV32) that don't have this
symbol defined.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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Bug: https://bugs.gentoo.org/723268
Signed-off-by: Andreas K. Hüttel <dilfridge@gentoo.org>
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In bug #659030 Gentoo started passing user's CFLAGS via $CC variable.
conform tests should but are not ready to handle -O1/-O2 yet.
Tests fail to validate headers due to inlining of weak symbol aliases
and other problems. Let's force it back to -O0 until it's fixed upstream.
Original patch by Sergei, ported to the new python test framework by Andreas
Bug: https://bugs.gentoo.org/659030
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
Signed-off-by: Andreas K. Hüttel <dilfridge@gentoo.org>
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Source:
https://src.fedoraproject.org/rpms/glibc/raw/master/f/glibc-c-utf8-locale.patch
Notes from there:
This patch needs to upstream as part of Carlos O'Donell
<carlos@redhat.com>'s work on enabling upstream C.UTF-8 support. This
work is currently blocked on cleaning up the test results to prove that
full code-point sorting is working as intended.
Note that this patch does not provide full code-point sorting as
expected.
This patch needs to upstream as soon as possible since it would be nice
to have this in F29 and fixed.
Further information:
https://bugzilla.redhat.com/show_bug.cgi?id=902094
https://sourceware.org/bugzilla/show_bug.cgi?id=17318
https://bugs.gentoo.org/671024
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Patch by pacho2
Signed-off-by: Andreas K. Hüttel <dilfridge@gentoo.org>
(cherry picked from commit 4e616cda056f471b799beba2b1cedc787ad4ecc0)
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This reverts commit 8479f23aa1d5e5477a37f46823856bdafaedfa46.
See for the background
https://sourceware.org/bugzilla/show_bug.cgi?id=16826
https://bugs.gentoo.org/show_bug.cgi?id=600632
This makes tst-nss-files-hosts-multi fail. Disable it.
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Do not bother running ldconfig on DESTDIR. It's a waste of time as we
won't use the result (portage will rebuild the cache after install).
Also, the Gentoo sandbox does not currently catch chroot() behavior so
we end up (incorrectly) flagging it as a violation as a write to /etc.
http://sourceware.org/ml/libc-alpha/2012-08/msg00118.html
https://bugs.gentoo.org/431038
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Update version.h, features.h, and ChangeLog.old/ChangeLog.21.
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Incorporate updates from translationproject.org.
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* Makerules (shlib.lds): Discard linker warning output.
(format.lds): Likewise.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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Improve documentation of the 'name' directive and the 'workload' mechanism.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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Produced with HiFive Unleashed hardware using Linux 5.8-rc5 exactly and
GCC 10.0.1 20200426.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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After some discussions it seems the original news was not clear
and that it is valid to manually pass the branch protection flags
iff GCC target libs are built with them too. The main difference
between manually passing the flags and using the configure
option is that the latter also makes branch protection the
default in GCC which may not be desirable in some cases.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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__GLRO loaded the word after the requested variable on big-endian
PowerPC, where LOWORD is 4. This can cause the memset implement
go wrong because the masking with the cache line size produces
wrong results, particularly if the loaded value happens to be 1.
The __GLRO macro is not used in any place where loading the lower
32-bit word of a 64-bit value is desired, so the +4 offset is always
wrong.
Fixes commit 18363b4f010da9ba459b13310b113ac0647c2fcc
("powerpc: Move cache line size to rtld_global_ro") and bug 26332.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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It was fixed in commit d93769405996dfc11d216ddbe415946617b5a494
("Fix array overflow in backtrace on PowerPC (bug 25423)"), which
went into glibc 2.31.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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Recommend the new __libc_single_thread variable instead.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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Storing user databases in DNS, without client-side DNSSEC validation,
is problematic from a security point of view.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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nptl has
/* Opcodes and data types for communication with the signal handler to
change user/group IDs. */
struct xid_command
{
int syscall_no;
long int id[3];
volatile int cntr;
volatile int error;
};
/* This must be last, otherwise the current thread might not have
permissions to send SIGSETXID syscall to the other threads. */
result = INTERNAL_SYSCALL_NCS (cmdp->syscall_no, 3,
cmdp->id[0], cmdp->id[1], cmdp->id[2]);
But the second argument of setgroups syscal is a pointer:
int setgroups (size_t size, const gid_t *list);
But on x32, pointers passed to syscall must have pointer type so that
they will be zero-extended. The kernel XID arguments are unsigned and
do not require sign extension. Change xid_command to
struct xid_command
{
int syscall_no;
unsigned long int id[3];
volatile int cntr;
volatile int error;
};
so that all arguments are zero-extended. A testcase is added for x32 and
setgroups returned with EFAULT when running as root without the fix.
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This patch makes build-many-glibcs.py use binutils 2.35 branch.
Tested with build-many-glibcs.py (compilers and glibcs builds).
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Make glibc MTE-safe on systems where MTE is available. This allows
using heap tagging with an LD_PRELOADed malloc implementation that
enables MTE. We don't document this as guaranteed contract yet, so
glibc may not be MTE safe when HWCAP2_MTE is set (older glibcs
certainly aren't). This is mainly for testing and debugging.
The HWCAP flag is not exposed in public headers until Linux adds it
to its uapi. The HWCAP value reservation will be in Linux 5.9.
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x86_64 Intel(R) Core(TM) i5-8265U
gcc (Gentoo 10.1.0-r2 p3) 10.1.0
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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Use PROT_READ and PROT_WRITE according to the load segment p_flags
when adding PROT_BTI.
This is before processing relocations which may drop PROT_BTI in
case of textrels. Executable stacks are not protected via PROT_BTI
either. PROT_BTI is hardening in case memory corruption happened,
it's value is reduced if there is writable and executable memory
available so missing it on such memory is fine, but we should
respect the p_flags and should not drop PROT_WRITE.
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The SELinux API deprecated several symbols in its 3.1 release, including
security_context_t, matchpathcon, avc_init, and sidput, which are used in
makedb and nscd. While the usage of these should eventually be replaced by
newer interfaces, this commit disables GCC warnings due to the use of the
above symbols.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
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Add a line that was missing from a previous commit.
Without increasing str, the null-byte is not validated, and
_dl_string_platform returns -1.
Fixes: d2ba3677da7a ("powerpc: Add support for POWER10")
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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Upstream GCC 11 development is now building the ibm128 runtime
support (in libgcc) without a .gnu.attributes section on ppc64le.
Ensure we have one to replace by building one ibm128 file in
libc and libm with attributes.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
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__nss_readline supersedes it. This reverts part of commit
3f5e3f5d066dcffb80af48ae2cf35a01a85a8f10 ("libio: Implement
internal function __libc_readline_unlocked"). The internal
aliases __fseeko64 and __ftello64 are preserved because
they are needed by __nss_readline as well.
Tested-by: Carlos O'Donell <carlos@redhat.com>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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Tested-by: Carlos O'Donell <carlos@redhat.com>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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