[crt] Enable sparc and mips targets

This patch enables sparc and mips in compiler-rt CRT, meaning that now every platform supported by compiler-rt builtins (that runs on Linux, i.e. not WebAssembly) will be suported by compiler-rt CRT

Reviewed By: phosek, MaskRay

Differential Revision: https://reviews.llvm.org/D147819

compiler-rt/cmake/crt-config-ix.cmake

@@ -24,14 +24,17 @@ set(HEXAGON hexagon)
 set(X86 i386)
 set(X86_64 x86_64)
 set(LOONGARCH64 loongarch64)
+set(MIPS32 mips mipsel)
+set(MIPS64 mips64 mips64el)
 set(PPC32 powerpc powerpcspe)
 set(PPC64 powerpc64 powerpc64le)
 set(RISCV32 riscv32)
 set(RISCV64 riscv64)
 set(VE ve)
 
 set(ALL_CRT_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM32} ${ARM64} ${PPC32}
-    ${PPC64} ${RISCV32} ${RISCV64} ${VE} ${HEXAGON} ${LOONGARCH64})
+    ${PPC64} ${RISCV32} ${RISCV64} ${VE} ${HEXAGON} ${LOONGARCH64}
+    ${MIPS32} ${MIPS64} ${SPARC} ${SPARCV9})
 
 include(CompilerRTUtils)
 

compiler-rt/lib/crt/crtbegin.c

@@ -60,6 +60,10 @@ __asm__(".pushsection .init,\"ax\",%progbits\n\t"
 __asm__(".pushsection .init,\"ax\",%progbits\n\t"
         "bl __do_init\n\t"
         ".popsection");
+#elif defined(__mips__)
+__asm__(".pushsection .init,\"ax\",@progbits\n\t"
+        "jal __do_init\n\t"
+        ".popsection");
 #elif defined(__powerpc__) || defined(__powerpc64__)
 __asm__(".pushsection .init,\"ax\",@progbits\n\t"
         "bl __do_init\n\t"
@@ -109,6 +113,10 @@ __asm__(".pushsection .fini,\"ax\",@progbits\n\t"
 __asm__(".pushsection .fini,\"ax\",%progbits\n\t"
         "bl __do_fini\n\t"
         ".popsection");
+#elif defined(__mips__)
+__asm__(".pushsection .fini,\"ax\",@progbits\n\t"
+        "jal __do_fini\n\t"
+        ".popsection");
 #elif defined(__powerpc__) || defined(__powerpc64__)
 __asm__(".pushsection .fini,\"ax\",@progbits\n\t"
         "bl __do_fini\n\t"