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author | Torbjörn SVENSSON <torbjorn.svensson@foss.st.com> | 2023-08-08 19:09:50 +0300 |
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committer | Corinna Vinschen <corinna@vinschen.de> | 2023-08-09 12:38:03 +0300 |
commit | b9e867d088935d9f0bf312e6dbf3e4976850dfd3 (patch) | |
tree | c1e533435a9fe52fe6c3aa435d5029c3eb913174 /newlib/libc/reent | |
parent | cbe7543cdfdb7f3d270214877d4a4c3e78710bd3 (diff) |
Add stub for getentropy
Example test case that fails with undefined reference to getentropy:
Testing g++.robertl/eb77.C, -std=c++20
doing compile
Executing on host: /build/gcc-13-2709-g9ac9fde961f/bin/arm-none-eabi-g++ /build/src/gcc/gcc/testsuite/g++.old-deja/g++.robertl/eb77.C -mthumb -march=armv6s-m -mcpu=cortex-m0 -mfloat-abi=soft -fdiagnostics-plain-output -fmessage-length=0 -std=c++20 -pedantic-errors -Wno-long-long -Wl,--start-group -lc -lm -Wl,--end-group --specs=nosys.specs -Wl,--allow-multiple-definition -Wl,-u,_isatty,-u,_fstat -Wl,-wrap,exit -Wl,-wrap,_exit -Wl,-wrap,main -Wl,-wrap,abort -Wl,g++_tg.o -lm -o ./eb77.exe (timeout = 800)
spawn -ignore SIGHUP /build/gcc-13-2709-g9ac9fde961f/bin/arm-none-eabi-g++ /build/src/gcc/gcc/testsuite/g++.old-deja/g++.robertl/eb77.C -mthumb -march=armv6s-m -mcpu=cortex-m0 -mfloat-abi=soft -fdiagnostics-plain-output -fmessage-length=0 -std=c++20 -pedantic-errors -Wno-long-long -Wl,--start-group -lc -lm -Wl,--end-group --specs=nosys.specs -Wl,--allow-multiple-definition -Wl,-u,_isatty,-u,_fstat -Wl,-wrap,exit -Wl,-wrap,_exit -Wl,-wrap,main -Wl,-wrap,abort -Wl,g++_tg.o -lm -o ./eb77.exe
pid is 28414 -28414
/build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/bin/ld: /build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/lib/thumb/v6-m/nofp/libstdc++.a(random.o): in function `std::(anonymous namespace)::__libc_getentropy(void*)':
(.text._ZNSt12_GLOBAL__N_117__libc_getentropyEPv+0x8): undefined reference to `getentropy'
/build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/bin/ld: /build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/lib/thumb/v6-m/nofp/libstdc++.a(random.o): in function `std::random_device::_M_init(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
(.text._ZNSt13random_device7_M_initERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x58): undefined reference to `getentropy'
/build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/bin/ld: /build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/lib/thumb/v6-m/nofp/libc.a(libc_a-arc4random.o): in function `_rs_stir':
(.text._rs_stir+0x8): undefined reference to `getentropy'
collect2: error: ld returned 1 exit status
pid is -1
close result is 28414 exp6 0 1
output is /build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/bin/ld: /build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/lib/thumb/v6-m/nofp/libstdc++.a(random.o): in function `std::(anonymous namespace)::__libc_getentropy(void*)':
(.text._ZNSt12_GLOBAL__N_117__libc_getentropyEPv+0x8): undefined reference to `getentropy'
/build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/bin/ld: /build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/lib/thumb/v6-m/nofp/libstdc++.a(random.o): in function `std::random_device::_M_init(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
(.text._ZNSt13random_device7_M_initERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x58): undefined reference to `getentropy'
/build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/bin/ld: /build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/lib/thumb/v6-m/nofp/libc.a(libc_a-arc4random.o): in function `_rs_stir':
(.text._rs_stir+0x8): undefined reference to `getentropy'
collect2: error: ld returned 1 exit status
status 1
compiler exited with status 1
FAIL: g++.old-deja/g++.robertl/eb77.C -std=c++20 (test for excess errors)
Excess errors:
(.text._ZNSt12_GLOBAL__N_117__libc_getentropyEPv+0x8): undefined reference to `getentropy'
(.text._ZNSt13random_device7_M_initERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x58): undefined reference to `getentropy'
(.text._rs_stir+0x8): undefined reference to `getentropy'
UNRESOLVED: g++.old-deja/g++.robertl/eb77.C -std=c++20 compilation failed to produce executable
Contributed by STMicroelectronics
Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>
Diffstat (limited to 'newlib/libc/reent')
-rw-r--r-- | newlib/libc/reent/Makefile.inc | 2 | ||||
-rw-r--r-- | newlib/libc/reent/getentropyr.c | 53 |
2 files changed, 55 insertions, 0 deletions
diff --git a/newlib/libc/reent/Makefile.inc b/newlib/libc/reent/Makefile.inc index 38ddf5766..26f952bfa 100644 --- a/newlib/libc/reent/Makefile.inc +++ b/newlib/libc/reent/Makefile.inc @@ -4,6 +4,7 @@ libc_a_SOURCES += \ %D%/impure.c \ %D%/fcntlr.c \ %D%/fstatr.c \ + %D%/getentropyr.c \ %D%/getreent.c \ %D%/gettimeofdayr.c \ %D%/isattyr.c \ @@ -46,6 +47,7 @@ LIBC_CHEWOUT_FILES += \ %D%/execr.def \ %D%/fcntlr.def \ %D%/fstatr.def \ + %D%/getentropyr.def \ %D%/gettimeofdayr.def \ %D%/linkr.def \ %D%/lseekr.def \ diff --git a/newlib/libc/reent/getentropyr.c b/newlib/libc/reent/getentropyr.c new file mode 100644 index 000000000..e3f85e41b --- /dev/null +++ b/newlib/libc/reent/getentropyr.c @@ -0,0 +1,53 @@ +/* Reentrant version of getentropy system call. */ + +#include <reent.h> +#include <unistd.h> +#include <_syslist.h> + +/* Some targets provides their own versions of these functions. Those + targets should define REENTRANT_SYSCALLS_PROVIDED in TARGET_CFLAGS. */ + +#ifdef _REENT_ONLY +#ifndef REENTRANT_SYSCALLS_PROVIDED +#define REENTRANT_SYSCALLS_PROVIDED +#endif +#endif + +#ifndef REENTRANT_SYSCALLS_PROVIDED + +/* We use the errno variable used by the system dependent layer. */ +#undef errno +extern int errno; + +/* +FUNCTION + <<_getentropy_r>>---Reentrant version of getentropy + +INDEX + _getentropy_r + +SYNOPSIS + #include <reent.h> + int _getentropy_r(struct _reent *<[ptr]>, + void *<[buf]>, size_t <[buflen]>); + +DESCRIPTION + This is a reentrant version of <<getentropy>>. It + takes a pointer to the global data block, which holds + <<errno>>. +*/ + +int +_getentropy_r (struct _reent *ptr, + void *buf, + size_t buflen) +{ + int ret; + + errno = 0; + if ((ret = _getentropy (buf, buflen)) == -1 && errno != 0) + _REENT_ERRNO(ptr) = errno; + return ret; +} + +#endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */ |