Added init_array support for vexriscv to allow static C++ ctors and C __attribute__((constructor, priority)) in gcc

litex/soc/cores/cpu/vexriscv/crt0.S

@@ -84,6 +84,7 @@ bss_done:
   li a0, 0x880  //880 enable timer + external interrupt sources (until mstatus.MIE is set, they will never trigger an interrupt)
   csrw mie,a0
 
+  call __libc_init_array
   call main
 infinit_loop:
   j infinit_loop

litex/soc/software/bios/linker.ld

@@ -51,6 +51,15 @@ SECTIONS
 		PROVIDE_HIDDEN (__bios_init_end = .);
 	} > rom
 
+	.init_array :
+	{
+		. = ALIGN(4);
+		__init_array_start = .;
+		KEEP(*(SORT(.init_array.*)))
+		KEEP(*(.init_array))
+		__init_array_end = .;
+	} > rom
+
 	.data :
 	{
 		. = ALIGN(8);