riscv32: Add DWARF support

Signed-off-by: Paul Guyot <[email protected]>

Author: pguyot

libs/jit/src/jit_dwarf.erl

@@ -350,6 +350,7 @@ elf(_State, _NativeCode) ->
 -define(EM_ARM, 40).
 -define(EM_X86_64, 62).
 -define(EM_AARCH64, 183).
+-define(EM_RISCV, 243).
 -define(SHT_PROGBITS, 1).
 -define(SHT_SYMTAB, 2).
 -define(SHT_STRTAB, 3).
@@ -369,7 +370,8 @@ elf(_State, _NativeCode) ->
 %% Map JIT backend to ELF machine type
 backend_to_machine_type(jit_x86_64) -> ?EM_X86_64;
 backend_to_machine_type(jit_aarch64) -> ?EM_AARCH64;
-backend_to_machine_type(jit_armv6m) -> ?EM_ARM.
+backend_to_machine_type(jit_armv6m) -> ?EM_ARM;
+backend_to_machine_type(jit_riscv32) -> ?EM_RISCV.
 
 %% Map JIT backend to ELF flags
 backend_to_elf_flags(jit_armv6m) ->

libs/jit/src/jit_riscv32.erl

@@ -237,6 +237,8 @@
 -define(PARAMETER_REGS, [a0, a1, a2, a3, a4, a5, a6, a7]).
 -define(SCRATCH_REGS, [t6, t5, t4, t2, t1, t0]).
 
+-include("jit_backend_dwarf_impl.hrl").
+
 %%-----------------------------------------------------------------------------
 %% @doc Return the word size in bytes, i.e. the sizeof(term) i.e.
 %% sizeof(uintptr_t)