Add riscv32 support

Add missing definitions for the RISC-V 32-bit architecture.

Signed-off-by: Khem Raj <[email protected]>

Author: kraj

configure.ac

@@ -45,6 +45,7 @@ SET_ARCH(IA32, i*86*)
 SET_ARCH(MIPS, mips*)
 SET_ARCH(AARCH64, aarch64*)
 SET_ARCH(RISCV64, riscv64*)
+SET_ARCH(RISCV32, riscv32*)
 
 AC_CHECK_SIZEOF(pid_t)
 AC_CHECK_SIZEOF(uid_t)

src/architecture.h

@@ -58,6 +58,7 @@ enum {
         ARCHITECTURE_TILEGX,
         ARCHITECTURE_CRIS,
         ARCHITECTURE_RISCV64,
+        ARCHITECTURE_RISCV32,
 	ARCHITECTURE_LOONGARCH,
         _ARCHITECTURE_MAX,
         _ARCHITECTURE_INVALID = -1
@@ -151,6 +152,9 @@ int uname_architecture(void);
 #elif defined(__riscv) && __riscv_xlen == 64
 #  define native_architecture() ARCHITECTURE_RISCV64
 #  define define LIB_ARCH_TUPLE "riscv64-linux-gnu"
+#elif defined(__riscv) && __riscv_xlen == 32
+#  define native_architecture() ARCHITECTURE_RISCV32
+#  define define LIB_ARCH_TUPLE "riscv32-linux-gnu"
 #elif defined(__loongarch__) && __loongarch_grlen == 64
 #  define native_architecture() ARCHITECTURE_LOONGARCH
 #  define define LIB_ARCH_TUPLE "loongarch64-linux-gnu"