[mlibc] support mlibc for rt-smart

Author: 0Bitbiscuits

.github/workflows/action_utest.yml

@@ -49,6 +49,7 @@ jobs:
          - {UTEST: "rtsmart/arm",     RTT_BSP: "bsp/qemu-vexpress-a9",    QEMU_ARCH: "arm",      QEMU_MACHINE: "vexpress-a9", CONFIG_FILE: "rtsmart/base.conf",   SD_FILE: "sd.bin", RUN: "no"}
          - {UTEST: "rtsmart/aarch64", RTT_BSP: "bsp/qemu-virt64-aarch64", QEMU_ARCH: "aarch64",  QEMU_MACHINE: "virt",  CONFIG_FILE: "rtsmart/base.conf",   SD_FILE: "sd.bin", RUN: "no"}
          - {UTEST: "rtsmart/riscv64", RTT_BSP: "bsp/qemu-virt64-riscv",   QEMU_ARCH: "riscv64",  QEMU_MACHINE: "virt",  CONFIG_FILE: "rtsmart/base.conf",   SD_FILE: "None", RUN: "yes"}
+         - {UTEST: "rtsmart/mlibc/riscv64", RTT_BSP: "bsp/qemu-virt64-riscv",   QEMU_ARCH: "riscv64",  QEMU_MACHINE: "virt",  CONFIG_FILE: "rtsmart/mlibc.conf",   SD_FILE: "None", RUN: "yes"}
     env:
       TEST_QEMU_ARCH: ${{ matrix.legs.QEMU_ARCH }}
       TEST_QEMU_MACHINE: ${{ matrix.legs.QEMU_MACHINE }}

components/lwp/lwp.c

@@ -576,6 +576,8 @@ pid_t lwp_execve(char *filename, int debug, int argc, char **argv, char **envp)
 
 #ifdef RT_USING_MUSLLIBC
 extern char **__environ;
+#elif defined(RT_USING_MLIBC)
+extern char **__environ;
 #else
 char **__environ = 0;
 #endif

components/lwp/lwp.h

@@ -84,6 +84,12 @@ struct lwp_tty;
 #define LWP_CREATE_STAT_SIGNALED(signo, coredump) (((signo) & 0x7f) | (coredump ? LWP_COREDUMP_FLAG : 0))
 #define LWP_CREATE_STAT_STOPPED(signo)            (LWP_CREATE_STAT_EXIT(signo) | 0x7f)
 #define LWP_CREATE_STAT_CONTINUED                 (0xffff)
+#elif defined(RT_USING_MLIBC)
+#define LWP_COREDUMP_FLAG                         0x80
+#define LWP_CREATE_STAT_EXIT(exit_code)           (((exit_code)&0xff) << 8)
+#define LWP_CREATE_STAT_SIGNALED(signo, coredump) (((signo) & 0x7f) | (coredump ? LWP_COREDUMP_FLAG : 0))
+#define LWP_CREATE_STAT_STOPPED(signo)            (LWP_CREATE_STAT_EXIT(signo) | 0x7f)
+#define LWP_CREATE_STAT_CONTINUED                 (0xffff)
 #else
 #error "No compatible lwp set status provided for this libc"
 #endif

components/lwp/lwp_syscall.c

@@ -40,6 +40,7 @@
 #include <mm_aspace.h>
 #include <lwp_user_mm.h>
 #include <lwp_arch.h>
+#include <bsd_porting.h>
 #endif
 
 #include <fcntl.h>

components/lwp/lwp_user_mm.h

@@ -22,6 +22,10 @@
 #include <mm_fault.h>
 #include <mm_page.h>
 
+#ifdef RT_USING_MLIBC
+#include <sys/mman.h>
+#endif
+
 #ifdef __cplusplus
 extern "C" {
 #endif

examples/utest/configs/rtsmart/mlibc.conf

@@ -0,0 +1,21 @@
+# mlibc
+CONFIG_RT_USING_EXTERNAL_LIBC=y
+CONFIG_PKG_USING_MLIBC=y
+CONFIG_PKG_MLIBC_PATH="/packages/system/mlibc"
+CONFIG_PKG_USING_MLIBC_LATEST_VERSION=y
+CONFIG_PKG_MLIBC_VER="latest"
+
+# testcase
+CONFIG_RT_USING_MEMHEAP=y
+CONFIG_UTEST_MEMHEAP_TC=y
+
+# RT-Smart
+CONFIG_RT_USING_SMART=y
+CONFIG_RT_USING_POSIX_EVENTFD=y
+CONFIG_RT_USING_POSIX_EPOLL=y
+CONFIG_RT_USING_POSIX_SIGNALFD=y
+CONFIG_RT_SIGNALFD_MAX_NUM=10
+CONFIG_RT_USING_POSIX_TIMERFD=y
+
+# misc
+CONFIG_RT_USING_DFS_V2=y