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app_shmem: create generic libc partition

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We need a generic name for the partition containing
essential C library globals. We're going to need to
add the stack canary guard to this area so user mode
can read it.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This commit is contained in:
Andrew Boie 2019-02-21 13:44:54 -08:00 • committed by Anas Nashif
commit 17ce822ed9
5 changed files with 12 additions and 23 deletions
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10
include/misc/libc-hooks.h
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@ -27,13 +27,6 @@ __syscall int _zephyr_read(char *buf, int nbytes);
__syscall int _zephyr_write(const void *buf, int nbytes);
#ifdef CONFIG_APP_SHARED_MEM
/* Memory partition containing newlib's globals. This includes all the globals
* within libc.a and the supporting zephyr hooks, but not the malloc arena.
*/
extern struct k_mem_partition z_newlib_partition;
#endif /* CONFIG_APP_SHARED_MEM */
#else
/* Minimal libc */
@ -46,6 +39,9 @@ __syscall size_t _zephyr_fwrite(const void *_MLIBC_RESTRICT ptr, size_t size,
#ifdef CONFIG_APP_SHARED_MEM
/* Memory partition containing the libc malloc arena */
extern struct k_mem_partition z_malloc_partition;
/* C library globals, except the malloc arena */
extern struct k_mem_partition z_libc_partition;
#endif
#include <syscalls/libc-hooks.h>