aboutsummaryrefslogtreecommitdiff
path: root/libc
AgeCommit message (Collapse)AuthorFilesLines
2018-05-24Fix strtok for previous tokens being NULLBalbir singh1-1/+4
Caught by scan-build. If the stored token nxtTok is already NULL, don't dereference src Signed-off-by: Balbir singh <bsingharora@gmail.com> Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
2018-02-28build: use thin archives rather than incremental linkingNicholas Piggin5-5/+5
This changes to build system to use thin archives rather than incremental linking for built-in.o, similar to recent change to Linux. built-in.o is renamed to built-in.a, and is created as a thin archive with no index, for speed and size. All built-in.a are aggregated into a skiboot.tmp.a which is a thin archive built with an index, making it suitable or linking. This is input into the final link. The advantags of build size and linker code placement flexibility are not as great with skiboot as a bigger project like Linux, but it's a conceptually better way to build, and is more compatible with link time optimisation in toolchains which might be interesting for skiboot particularly for size reductions. Size of build tree before this patch is 34.4MB, afterwards 23.1MB. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-09-15libc: add strnlen()Oliver O'Halloran2-0/+14
Sometimes handy. Signed-off-by: Oliver O'Halloran <oohall@gmail.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-08-24libc/test/run-snprintf: int -> unsigned intStewart Smith1-1/+2
UBSan: libc/test/run-snprintf.c:123:9: runtime error: left shift of 268435456 by 4 places cannot be represented in type 'int' Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-08-24mktime: fix off-by-one error calling days_in_monthStewart Smith1-1/+1
From auditing all the mktime() users, there seems to be only a *very* small window around new years day where we could possibly return incorrect data to the OS, and even then, there would have to be FSP reset/reload on FSP machines. I don't *think* there's an opportunity on other machines. Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-08-24libc/time.c: days_in_month() use char rather than intStewart Smith1-1/+1
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-05-31libc: Add labs() to stdlibShilpasri G Bhat4-1/+34
Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com> Acked-by: Balbir Singh <bsingharora@gmail.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-05-01gcov: fix typo preventing libc coverage reportStewart Smith1-1/+1
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-02-02libc/stdio/vsnprintf.c: add explicit fallthroughStewart Smith1-0/+1
silences recent GCC warning Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-01-05stdio: Fix default definition of pr_fmtBenjamin Herrenschmidt1-1/+1
And change include order in libpore to avoid a compile failure due to the default definition Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2016-10-17snprintf: increase testing, %u and 0 paddingStewart Smith1-0/+53
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2016-10-11libc : Changes variable data type where return value of strlen() stored from ↵Mukesh Ojha3-4/+4
int to size_t Reason of the change as integer value may overflow, and it can give negative value for the length. This patch also changes the data type of variable which is compared with strlen() as the comparison also has to be done on the same level. Signed-off-by: Mukesh Ojha <mukesh02@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2016-10-05libc/string: add memcpy_from_ci()Claudio Carvalho3-5/+54
This adds memcpy_from_ci, a cache inhibited version of memcpy, required by secure boot. The secure boot verification code is stored in a secure ROM and the logic that contains the ROM within the processor is implemented in a way that it only responds to CI (cache inhibited) operations. Due to performance issues we copy the verification code from the secure ROM to RAM and we use memcpy_ci for that. What makes memcpy_ci vs ordinary memcpy? memcpy copies data like in the example below and the compiler translates that to load instructions that are not cache inhibited (e.g. lbzx - load byte and zero indexed). In other words, the data is cached. a[i] = b[i] memcpy_ci copies data using the cache inhibited version of load instructions: in_8() and in_be32(), both defined in include/io.h. These functions use lbzcix and lwzcix assembly instructions, respectively. In this case, the data is not cached as required by the logic that contains the ROM. *((uint8_t*) destp) = in_8((uint8_t*)srcp); *((uint32_t*) destp) = in_be32((uint32_t*)srcp) Signed-off-by: Claudio Carvalho <cclaudio@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2016-09-02strlen: use size_t for lenStewart Smith1-1/+1
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com> Reviewed-by: Mukesh Ojha <mukesh02@linux.vnet.ibm.com>
2016-09-02consolidate gcov flags into HOSTGCOVFLAGS for host binariesStewart Smith1-2/+2
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2016-08-18libc: Use 8-bytes stores for non-0 memset tooBenjamin Herrenschmidt1-1/+8
Memory poisoning hammers this, so let's be a bit smart about it and avoid falling back to byte stores when the data is not 0 Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2016-07-18libc: Remove NULL check for format argument in snprintf()Cyril Bur1-1/+1
libc printf style functions are annotated with __attribute__((format (printf, x, y))) which causes GCC to perform compile time checks against these arguments. As of at least gcc 6.1.1 [(GCC) 6.1.1 20160602] this causes an error running make check. GCC appears to be guaranteeing that the format argument won't be NULL and complaining about explicit checks. In file included from core/test/run-console-log-buf-overrun.c:48:0: core/test/run-console-log-buf-overrun.c: In function ‘snprintf’: core/test/../../libc/stdio/snprintf.c:21:19: error: nonnull argument ‘format’compared to NULL [-Werror=nonnull-compare] if ((buff==NULL) || (format==NULL)) ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors make: *** [core/test/Makefile.check:59:core/test/run-console-log-buf-overrun] Error 1 Signed-off-by: Cyril Bur <cyril.bur@au1.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2016-07-06Add "ffs" inline functionBenjamin Herrenschmidt1-0/+5
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2016-06-20Fix for typosFrederic Bonnard2-2/+2
While reviewing the Debian packaging, codespell found those. Most proposed fixes are based on codespell's default dictionnary. Signed-off-by: Frederic Bonnard <frediz@linux.vnet.ibm.com> Reviewed-by: Mukesh Ojha <mukesh02@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2016-03-30*/test/*: Added '<subdir>-check' make targetsOliver O'Halloran1-2/+5
Currently these exist for some parts of the source tree, but not all of it. They're nice if you are only modifing code in a one part of the tree as the full test suite can be a little slow. Signed-off-by: Oliver O'Halloran <oohall@gmail.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-11-13Remove unused scanf and variantsStewart Smith5-455/+3
We don't use scanf at all, so solve the bugs found by static analysis by just removing it. Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-09-09Move FSP specific abort() code to platform layerVasant Hegde2-10/+4
Presently abort() call sets up HID0, triggers attention and finally calls infinite for loop. FSP takes care of collecting required logs and reboots the system. This sequence is specific to FSP machine and it will not work on BMC based machine. Hence move FSP specific code to hw/fsp/fsp-attn.c. Note that this patch adds new parameter to abort call. Hence replaced _abort() by abort() in exception.c so that we can capture file info as well. Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-07-08fix wrong operator use in stdlib/rand.cStewart Smith1-1/+1
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-07-02Increase unit test coverage of printf h and z length modifiersStewart Smith1-0/+31
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-07-02Increase unit test coverage of printf %p and %oStewart Smith1-0/+22
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-06-24add tests for libc tolower() and toupper()Stewart Smith2-0/+22
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-06-24add tests for libc isdigit, isprint, isspace, isxdigitStewart Smith2-0/+93
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-06-24add tests for libc memmoveStewart Smith2-2/+27
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-06-24add tests for libc strncasecmpStewart Smith2-0/+17
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-06-24add tests for libc strcasecmpStewart Smith2-0/+27
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-06-24add tests for libc strcmpStewart Smith2-0/+10
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-06-24add tests for libc memcmpStewart Smith2-0/+10
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-06-24add tests for libc memchrStewart Smith2-0/+13
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-06-23libflash/blocklevel: Extend the block level to be able to do eccCyril Bur1-0/+2
At the moment ECC reads and writes are still being handled by the low level core of libflash. ECC should be none of libflashes concern, it is primarily a hardware access backend. It makes sense for blocklevel to take care of ECC but currently it has no way of knowing. With some simple modifications (which are rudimentary at the moment and will need a performance improvement) blocklevel can handle ECC, and with a little more effort this can be extended to provide read and write protection in blocklevel. Reviewed-By: Alistair Popple <alistair@popple.id.au> Signed-off-by: Cyril Bur <cyril.bur@au1.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-06-15Remove unused struct tm elementsStewart Smith1-5/+0
Better to error out than suddenly have places use uninitalized data. Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-06-01Optimized memset() implementation for POWERStewart Smith3-0/+55
This uses the dcbz instruction to clear cacheline at a time rather than byte at a time. This means that even without high levels of optimization, we *dramatically* improve boot performance with SKIBOOT_GCOV=1 and probably ever so slightly speed things up for normal builds. We currently just hard-code 128 as cacheline size as all CPUs that skiboot currently boots on have 128 byte cachelines. Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-05-12Add pr_fmt to do printf/prlog prefixing automagicallyStewart Smith1-1/+9
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-02-26sparse: fix libc declarationsCédric Le Goater1-6/+8
Signed-off-by: Cédric Le Goater <clg@fr.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-02-26sparse: fix Using plain integer as NULL pointer warningCédric Le Goater2-2/+2
Signed-off-by: Cédric Le Goater <clg@fr.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-02-26sparse: declare errnoCédric Le Goater1-0/+1
Signed-off-by: Cédric Le Goater <clg@fr.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-02-23atoi/atol should assume base 10, not autodetect base.Daniel Axtens3-6/+9
The behaviour of atoi/atol on glibc (and according to the spec) is to assume base 10, not to autodetect the base. Signed-off-by: Daniel Axtens <dja@axtens.net> Reviewed-by: Cyril Bur <cyrilbur@gmail.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-02-23Don't recognise a double hex prefix (0x0xNN) as valid.Daniel Axtens3-8/+3
When autodetecting the base, the code would strip hex prefixes twice. Now the string is not modified in the detection stage. Signed-off-by: Daniel Axtens <dja@axtens.net> Reviewed-by: Cyril Bur <cyrilbur@gmail.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-02-23Test libc stdlib functions (atoi/strtol and friends)Daniel Axtens1-0/+60
This increases coverage of atoi, atol, strtol and strtoul to 100%. Signed-off-by: Daniel Axtens <dja@axtens.net> Reviewed-by: Cyril Bur <cyrilbur@gmail.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-02-11Make abort() update sp attn area (like assert does)Stewart Smith1-1/+7
Gives better diagnostics in error logs/dumps Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-02-09Fix commit 16c80346Jeremy Kerr1-2/+11
Commit 16c80346 change included some reverts of previous commits, which we need. This change reverts those reverts, leaving the original intent of that change. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-02-05Add OPAL_INVALID_CALL explicitly in opal.h and docsStewart Smith1-11/+2
Was mentioned in linux as possibly being used by some external test modules. It's harmless to make this official behaviour. Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-02-05Makefile: clean the gcov files created during coverageNeelesh Gupta1-2/+11
Fix the Makefile to clean up the coverage data files generated through gcov. Signed-off-by: Neelesh Gupta <neelegup@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-01-27add libc/test/.gitignore for the new libc unit testsStewart Smith1-0/+10
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-01-20Add skeleton for libc/ctype unit testsStewart Smith3-1/+62
Now it shows up as untested in lcov! Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-01-20Add skeleton for libc/stdlib unit testStewart Smith3-1/+62
Now it shows up as untested in lcov! Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
generated by cgit v1.1 at 2024-11-15 04:10:42 +0000