What is RISC-V?

00370613   addi    a2,a4,3
02c13c23   sd      a2,56(sp)
02d108a3   sb      a3,49(sp)
00274703   lbu     a4,2(a4)
03d00793   li      a5,61
3cf70863   beq     a4,a5,1ce28 <main+0x1d68>
000165b7   lui     a1,0x16
c3058593   addi    a1,a1,-976 # 15c30 <__mon_yday+0x24d8>
00500613   li      a2,5
00000513   li      a0,0
964fe0ef   jal     1abd0 <dcgettext@plt>
00050613   mv      a2,a0
00000593   li      a1,0
00000513   li      a0,0
f75fd0ef   jal     1a9f0 <error@plt>
9901b503   ld      a0,-1648(gp) # 16bd8 <color_buf>
accfe0ef   jal     1ad50 <free@plt>
9981b503   ld      a0,-1640(gp) # 16be0 <color_ext_list>
00050a63   beqz    a0,1caa0 <main+0x19e0>
02053983   ld      s3,32(a0)
abcfe0ef   jal     1ad50 <free@plt>
00098513   mv      a0,s3
ff1ff06f   j       1ca8c <main+0x19cc>
9a0180a3   sb      zero,-1631(gp) # 16be9 <print_with_color>