LoongArch support (#929)

* LoongArch: These files are only compiled on the LoongArch platform

* Revert "Support loongarch64"

This reverts commit 79d5b68e.

* LoongArch: link libatomic

* LoongArch: add "-mcmodel=large" to CFLAGS

cmake/Env.cmake

@@ -137,8 +137,9 @@ elseif(${ARCHITECTURE} STREQUAL "aarch64")
     set(MTUNE_CFLAGS "-mtune=generic" )
     set(ARCH_LDFLAGS "-l:libatomic.a")
 elseif(${ARCHITECTURE} STREQUAL "loongarch64")
-    set(MARCH_CFLAGS "-march=la464" )
-    set(MTUNE_CFLAGS "-mabi=lp64d" )
+    set(MARCH_CFLAGS "-march=la464" "-mcmodel=large")
+    set(MTUNE_CFLAGS "-mabi=lp64d")
+    set(ARCH_LDFLAGS "-latomic")
 elseif(${ARCHITECTURE} STREQUAL "sw_64")
     set(ARCH_LDFLAGS "-latomic -llzma")
 else()

deps/oblib/src/lib/CMakeLists.txt

@@ -26,19 +26,12 @@ ob_lib_add_target(oblib_lib_coro_context
   coro/context/asm/make_sw_64_sysv_elf_gas.S
   coro/context/asm/jump_sw_64_sysv_elf_gas.S
   coro/context/asm/ontop_sw_64_aapcs_elf_gas.S
-
+  coro/context/asm/jump_loongarch64_sysv_elf_gas.S
+  coro/context/asm/make_loongarch64_sysv_elf_gas.S
+  coro/context/asm/ontop_loongarch64_sysv_elf_gas.S
 )
 disable_pch(oblib_lib_coro_context)
 
-if(${ARCHITECTURE} STREQUAL "loongarch64")
-  ob_lib_add_target(oblib_lib_coro_context_loongarch64
-    coro/context/asm/jump_loongarch64_sysv_elf_gas.S
-    coro/context/asm/make_loongarch64_sysv_elf_gas.S
-    coro/context/asm/ontop_loongarch64_sysv_elf_gas.S
-  )
-  disable_pch(oblib_lib_coro_context_loongarch64)
-endif()
-
 ob_set_subtarget(oblib_lib coro
   coro/co_base_sched.cpp
   coro/co_context.cpp

deps/oblib/src/lib/coro/context/asm/jump_loongarch64_sysv_elf_gas.S

@@ -38,6 +38,7 @@
  *                                                     *
  * *****************************************************/
 
+#if defined(__loongarch64)
 .file "jump_loongarch64_sysv_elf_gas.S"
 .text
 .globl jump_fcontext
@@ -119,3 +120,4 @@ jump_fcontext:
 
 /* Mark that we don't need executable stack.  */
 .section .note.GNU-stack,"",%progbits
+#endif

deps/oblib/src/lib/coro/context/asm/make_loongarch64_sysv_elf_gas.S

@@ -38,6 +38,7 @@
  *                                                     *
  * *****************************************************/
 
+#if defined(__loongarch64)
 .file "make_loongarch64_sysv_elf_gas.S"
 .text
 .globl make_fcontext
@@ -70,3 +71,4 @@ finish:
 .size make_fcontext, .-make_fcontext
 /* Mark that we don't need executable stack.  */
 .section .note.GNU-stack,"",%progbits
+#endif

deps/oblib/src/lib/coro/context/asm/ontop_loongarch64_sysv_elf_gas.S

@@ -38,6 +38,7 @@
  *                                                     *
  * *****************************************************/
 
+#if defined(__loongarch64)
 .file "ontop_loongarch64_sysv_elf_gas.S"
 .text
 .globl ontop_fcontext
@@ -116,3 +117,4 @@ ontop_fcontext:
 
 /* Mark that we don't need executable stack.  */
 .section .note.GNU-stack,"",%progbits
+#endif