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mlibc: implement memalign using posix_memalign

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Matheus
2026-08-11 14:18:11 -03:00
parent c194569d65
commit 0edd02c9c5
2 changed files with 64 additions and 2 deletions
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patches/mlibc/jinx-working-patch.patch
+63 -1
View File
@@ -231,6 +231,28 @@ index 17cf422..01941c1 100644
// int sys_ptsname(int fd, char *buffer, size_t length);
struct Ptsname {};
// int sys_unlockpt(int fd);
diff --git mlibc-clean/options/linux/generic/malloc.cpp mlibc-workdir/options/linux/generic/malloc.cpp
index 065de6c..10c7395 100644
--- mlibc-clean/options/linux/generic/malloc.cpp
+++ mlibc-workdir/options/linux/generic/malloc.cpp
@@ -1,7 +1,13 @@
-#include <bits/ensure.h>
+#include <errno.h>
#include <malloc.h>
+#include <stdlib.h>
-void *memalign(size_t, size_t) {
- __ensure(!"Not implemented");
- __builtin_unreachable();
+void *memalign(size_t alignment, size_t size) {
+ void *ptr;
+ int ret = posix_memalign(&ptr, alignment, size);
+ if(ret) {
+ errno = ret;
+ return nullptr;
+ }
+ return ptr;
}
diff --git mlibc-clean/options/posix/generic/net-if.cpp mlibc-workdir/options/posix/generic/net-if.cpp
index ed0c463..8df2580 100644
--- mlibc-clean/options/posix/generic/net-if.cpp
@@ -269,7 +291,7 @@ index ed0c463..8df2580 100644
unsigned int if_nametoindex(const char *name) {
diff --git mlibc-clean/options/posix/generic/posix_stdio.cpp mlibc-workdir/options/posix/generic/posix_stdio.cpp
index 8592ea5..94ceba1 100644
index ab4f784..ba663bb 100644
--- mlibc-clean/options/posix/generic/posix_stdio.cpp
+++ mlibc-workdir/options/posix/generic/posix_stdio.cpp
@@ -233,7 +233,10 @@ int renameat(int olddirfd, const char *old_path, int newdirfd, const char *new_p
@@ -1051,3 +1073,43 @@ index 43dd6b0..3e01e87 100644
subdir: 'astral',
follow_symlinks: true,
)
diff --git mlibc-workdir/tests/glibc/memalign.c mlibc-workdir/tests/glibc/memalign.c
new file mode 100644
index 0000000..0b3a158
--- /dev/null
+++ mlibc-workdir/tests/glibc/memalign.c
@@ -0,0 +1,22 @@
+#include <assert.h>
+#include <errno.h>
+#include <malloc.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+int main(void) {
+ void *p;
+
+ errno = 0;
+ p = memalign(256, 1);
+ assert(p != NULL);
+ assert((uintptr_t)p % 256 == 0);
+ free(p);
+
+ errno = 0;
+ p = memalign(3, 1);
+ assert(p == NULL);
+ assert(errno == EINVAL);
+
+ return 0;
+}
diff --git mlibc-clean/tests/meson.build mlibc-workdir/tests/meson.build
index 9c5bcd7..8b2b95e 100644
--- mlibc-clean/tests/meson.build
+++ mlibc-workdir/tests/meson.build
@@ -170,6 +170,7 @@ all_test_cases = [
'glibc/rpmatch',
'glibc/strverscmp',
'glibc/memmem',
+ 'glibc/memalign',
'glibc/stdio_ext',
'glibc/_dl_find_object',
'glibc/shadow',
recipes/mlibc
+1 -1
View File
@@ -1,6 +1,6 @@
name=mlibc
from_source=mlibc
revision=9
revision=10
hostdeps="xgcc xbinutils pkgconfig"
builddeps="freestnd-c-hdrs freestnd-cxx-hdrs frigg libsmarter"
imagedeps="meson ninja-build git build-essential binutils"