Redefine signal for architecture mips (#40513)

define SIGSTOP 19 is just ok for architecture x86、arm、s390、powerpc and so on.
but others architecture has different values.

Co-authored-by: Sunguoyun <[email protected]>
Co-authored-by: hev <[email protected]>
Co-authored-by: Jan Kotas <[email protected]>

Author: 3 people

src/libraries/Native/Unix/CMakeLists.txt

@@ -64,6 +64,9 @@ elseif (CLR_CMAKE_TARGET_ARCH_WASM)
 elseif (CLR_CMAKE_TARGET_ARCH_ARM64)
     add_definitions(-DTARGET_64BIT=1)
     add_definitions(-DTARGET_ARM64)
+elseif (CLR_CMAKE_TARGET_ARCH_MIPS64)
+    add_definitions(-DTARGET_64BIT=1)
+    add_definitions(-DTARGET_MIPS64)
 elseif (CLR_CMAKE_TARGET_ARCH_ARM)
     add_definitions(-DTARGET_32BIT=1)
     add_definitions(-DTARGET_ARM)

src/libraries/Native/Unix/System.Native/pal_process.c

@@ -28,8 +28,6 @@
 #include <sched.h>
 #endif
 
-// Validate that our Signals enum values are correct for the platform
-c_static_assert(PAL_SIGKILL == SIGKILL);
 
 // Validate that our SysLogPriority values are correct for the platform
 c_static_assert(PAL_LOG_EMERG == LOG_EMERG);
@@ -653,6 +651,26 @@ int32_t SystemNative_SetRLimit(RLimitResources resourceType, const RLimit* limit
 
 int32_t SystemNative_Kill(int32_t pid, int32_t signal)
 {
+    switch (signal)
+    {
+        case PAL_NONE:
+             signal = 0;
+             break;
+
+        case PAL_SIGKILL:
+             signal = SIGKILL;
+             break;
+
+        case PAL_SIGSTOP:
+             signal = SIGSTOP;
+             break;
+
+        default:
+             assert_msg(false, "Unknown signal", signal);
+             errno = EINVAL;
+             return -1;
+    }
+
     return kill(pid, signal);
 }
 

src/libraries/Native/Unix/System.Native/pal_process.h

@@ -72,7 +72,9 @@ typedef enum
 
 typedef enum
 {
+    PAL_NONE = 0,
     PAL_SIGKILL = 9, /* kill the specified process */
+    PAL_SIGSTOP = 19,
 } Signals;
 
 /**