[libc] Add a simple linux aarch64 config.
Summary:
With this change, "ninja check-libc" on linux/aarch64 succeeds.
However, all entrypoints with machine dependent implementations
have been skipped. A good number of these skipped entrypoints can
be enabled once we have aarch64 syscall support available.
Reviewers: abrachet, asteinhauser
Differential Revision: https://reviews.llvm.org/D81533
GitOrigin-RevId: 1f567b2c6f6573b19cbd81f876717f28623b51e9
diff --git a/config/linux/aarch64/entrypoints.txt b/config/linux/aarch64/entrypoints.txt
new file mode 100644
index 0000000..ca3157b
--- /dev/null
+++ b/config/linux/aarch64/entrypoints.txt
@@ -0,0 +1,26 @@
+set(TARGET_LIBC_ENTRYPOINTS
+ # errno.h entrypoints
+ libc.src.errno.__errno_location
+
+ # string.h entrypoints
+ libc.src.string.strlen
+)
+
+set(TARGET_LIBM_ENTRYPOINTS
+ # math.h entrypoints
+ libc.src.math.ceil
+ libc.src.math.ceilf
+ libc.src.math.cosf
+ libc.src.math.expf
+ libc.src.math.exp2f
+ libc.src.math.fabs
+ libc.src.math.fabsf
+ libc.src.math.floor
+ libc.src.math.floorf
+ libc.src.math.round
+ libc.src.math.roundf
+ libc.src.math.sincosf
+ libc.src.math.sinf
+ libc.src.math.trunc
+ libc.src.math.truncf
+)
diff --git a/config/linux/aarch64/headers.txt b/config/linux/aarch64/headers.txt
new file mode 100644
index 0000000..a40f4b8
--- /dev/null
+++ b/config/linux/aarch64/headers.txt
@@ -0,0 +1,5 @@
+set(PUBLIC_HEADERS
+ libc.include.errno
+ libc.include.math
+ libc.include.sys_syscall
+)
