RISC-V: Add address printer tests on disassembler

This commit adds address printer tests on the disassembler focusing on
various path to/on maybe_print_address.  It also tests whether the address
adjustment on RV32 (fix to PR29342) works as expected and whether the
highest address is printed with a symbol.

gas/ChangeLog:

	* testsuite/gas/riscv/dis-addr-a.s: Rename from auipc-x0.s.
	* testsuite/gas/riscv/dis-addr-a.d: Rename from auipc-x0.d.
	* testsuite/gas/riscv/dis-addr-2.s: New address printer tests
	on the disassembler.
	* testsuite/gas/riscv/dis-addr-2-32.d: Likewise.
	* testsuite/gas/riscv/dis-addr-2-64.d: Likewise.
	* testsuite/gas/riscv/dis-addr-3.s: New address printer tests
	on the disassembler if `gp' is the highest address.
	* testsuite/gas/riscv/dis-addr-3-32.d: Likewise.
	* testsuite/gas/riscv/dis-addr-3-64.d: Likewise.

gas/testsuite/gas/riscv/dis-addr-2-32.d

@@ -0,0 +1,29 @@
+#as: -march=rv32ic
+#source: dis-addr-2.s
+#objdump: -d
+
+.*:     file format elf32-(little|big)riscv
+
+
+Disassembly of section .text:
+
+0+000 <target>:
+[ 	]+[0-9a-f]+:[ 	]+fffff2b7[ 	]+lui[  	]+t0,0xfffff
+[ 	]+[0-9a-f]+:[ 	]+ffc2a903[ 	]+lw[   	]+s2,-4\(t0\) # ffffeffc <addr_load>
+[ 	]+[0-9a-f]+:[ 	]+ffffe337[ 	]+lui[  	]+t1,0xffffe
+[ 	]+[0-9a-f]+:[ 	]+ff332c23[ 	]+sw[   	]+s3,-8\(t1\) # ffffdff8 <addr_store>
+[ 	]+[0-9a-f]+:[ 	]+ffffd3b7[ 	]+lui[  	]+t2,0xffffd
+[ 	]+[0-9a-f]+:[ 	]+000380e7[ 	]+jalr[ 	]+t2 # ffffd000 <addr_jalr_1>
+[ 	]+[0-9a-f]+:[ 	]+ffffce37[ 	]+lui[  	]+t3,0xffffc
+[ 	]+[0-9a-f]+:[ 	]+ff4e00e7[ 	]+jalr[ 	]+-12\(t3\) # ffffbff4 <addr_jalr_2>
+[ 	]+[0-9a-f]+:[ 	]+ffffbeb7[ 	]+lui[  	]+t4,0xffffb
+[ 	]+[0-9a-f]+:[ 	]+000e8a67[ 	]+jalr[ 	]+s4,t4 # ffffb000 <addr_jalr_3>
+[ 	]+[0-9a-f]+:[ 	]+ffffaf37[ 	]+lui[  	]+t5,0xffffa
+[ 	]+[0-9a-f]+:[ 	]+ff0f0a93[ 	]+addi[ 	]+s5,t5,-16 # ffff9ff0 <addr_loadaddr>
+[ 	]+[0-9a-f]+:[ 	]+ffff9fb7[ 	]+lui[  	]+t6,0xffff9
+[ 	]+[0-9a-f]+:[ 	]+1fb1[ 	]+addi[ 	]+t6,t6,-20 # ffff8fec <addr_loadaddr_c>
+[ 	]+[0-9a-f]+:[ 	]+4001a283[ 	]+lw[   	]+t0,1024\(gp\) # 600 <addr_rel_gp_pos>
+[ 	]+[0-9a-f]+:[ 	]+c001a303[ 	]+lw[   	]+t1,-1024\(gp\) # fffffe00 <addr_rel_gp_neg>
+[ 	]+[0-9a-f]+:[ 	]+10002383[ 	]+lw[   	]+t2,256\(zero\) # 100 <addr_rel_zero_pos>
+[ 	]+[0-9a-f]+:[ 	]+80002e03[ 	]+lw[   	]+t3,-2048\(zero\) # fffff800 <addr_rel_zero_neg>
+[ 	]+[0-9a-f]+:[ 	]+fff00e83[ 	]+lb[   	]+t4,-1\(zero\) # ffffffff <addr_top>

gas/testsuite/gas/riscv/dis-addr-2-64.d

@@ -0,0 +1,33 @@
+#as: -march=rv64ic -defsym rv64=1
+#source: dis-addr-2.s
+#objdump: -d
+
+.*:     file format elf64-(little|big)riscv
+
+
+Disassembly of section .text:
+
+0+000 <target>:
+[ 	]+[0-9a-f]+:[ 	]+fffff2b7[ 	]+lui[  	]+t0,0xfffff
+[ 	]+[0-9a-f]+:[ 	]+ffc2a903[ 	]+lw[   	]+s2,-4\(t0\) # ffffffffffffeffc <addr_load>
+[ 	]+[0-9a-f]+:[ 	]+ffffe337[ 	]+lui[  	]+t1,0xffffe
+[ 	]+[0-9a-f]+:[ 	]+ff332c23[ 	]+sw[   	]+s3,-8\(t1\) # ffffffffffffdff8 <addr_store>
+[ 	]+[0-9a-f]+:[ 	]+ffffd3b7[ 	]+lui[  	]+t2,0xffffd
+[ 	]+[0-9a-f]+:[ 	]+000380e7[ 	]+jalr[ 	]+t2 # ffffffffffffd000 <addr_jalr_1>
+[ 	]+[0-9a-f]+:[ 	]+ffffce37[ 	]+lui[  	]+t3,0xffffc
+[ 	]+[0-9a-f]+:[ 	]+ff4e00e7[ 	]+jalr[ 	]+-12\(t3\) # ffffffffffffbff4 <addr_jalr_2>
+[ 	]+[0-9a-f]+:[ 	]+ffffbeb7[ 	]+lui[  	]+t4,0xffffb
+[ 	]+[0-9a-f]+:[ 	]+000e8a67[ 	]+jalr[ 	]+s4,t4 # ffffffffffffb000 <addr_jalr_3>
+[ 	]+[0-9a-f]+:[ 	]+ffffaf37[ 	]+lui[  	]+t5,0xffffa
+[ 	]+[0-9a-f]+:[ 	]+ff0f0a93[ 	]+addi[ 	]+s5,t5,-16 # ffffffffffff9ff0 <addr_loadaddr>
+[ 	]+[0-9a-f]+:[ 	]+ffff9fb7[ 	]+lui[  	]+t6,0xffff9
+[ 	]+[0-9a-f]+:[ 	]+1fb1[ 	]+addi[ 	]+t6,t6,-20 # ffffffffffff8fec <addr_loadaddr_c>
+[ 	]+[0-9a-f]+:[ 	]+ffff8b37[ 	]+lui[  	]+s6,0xffff8
+[ 	]+[0-9a-f]+:[ 	]+fe8b0b9b[ 	]+addiw[ 	]+s7,s6,-24 # ffffffffffff7fe8 <addr_loadaddr_w>
+[ 	]+[0-9a-f]+:[ 	]+ffff7c37[ 	]+lui[  	]+s8,0xffff7
+[ 	]+[0-9a-f]+:[ 	]+3c11[ 	]+addiw[ 	]+s8,s8,-28 # ffffffffffff6fe4 <addr_loadaddr_w_c>
+[ 	]+[0-9a-f]+:[ 	]+4001a283[ 	]+lw[   	]+t0,1024\(gp\) # 600 <addr_rel_gp_pos>
+[ 	]+[0-9a-f]+:[ 	]+c001a303[ 	]+lw[   	]+t1,-1024\(gp\) # fffffffffffffe00 <addr_rel_gp_neg>
+[ 	]+[0-9a-f]+:[ 	]+10002383[ 	]+lw[   	]+t2,256\(zero\) # 100 <addr_rel_zero_pos>
+[ 	]+[0-9a-f]+:[ 	]+80002e03[ 	]+lw[   	]+t3,-2048\(zero\) # fffffffffffff800 <addr_rel_zero_neg>
+[ 	]+[0-9a-f]+:[ 	]+fff00e83[ 	]+lb[   	]+t4,-1\(zero\) # ffffffffffffffff <addr_top>

gas/testsuite/gas/riscv/dis-addr-2.s

@@ -0,0 +1,70 @@
+.set __global_pointer$, 0x00000200
+
+.ifdef rv64
+topbase = 0xffffffff00000000
+.else
+topbase = 0
+.endif
+
+.set addr_load,         topbase + 0xffffeffc  # -0x1000 -4
+.set addr_store,        topbase + 0xffffdff8  # -0x2000 -8
+.set addr_jalr_1,       topbase + 0xffffd000  # -0x3000
+.set addr_jalr_2,       topbase + 0xffffbff4  # -0x4000 -12
+.set addr_jalr_3,       topbase + 0xffffb000  # -0x5000
+.set addr_loadaddr,     topbase + 0xffff9ff0  # -0x6000 -16
+.set addr_loadaddr_c,   topbase + 0xffff8fec  # -0x7000 -20
+.set addr_loadaddr_w,   topbase + 0xffff7fe8  # -0x8000 -24
+.set addr_loadaddr_w_c, topbase + 0xffff6fe4  # -0x9000 -28
+.set addr_rel_gp_pos,             0x00000600  # __global_pointer$ + 0x400
+.set addr_rel_gp_neg,   topbase + 0xfffffe00  # __global_pointer$ - 0x400
+.set addr_rel_zero_pos,           0x00000100
+.set addr_rel_zero_neg, topbase + 0xfffff800  # -0x800
+.set addr_top,          topbase + 0xffffffff  # -1
+
+target:
+	.option	push
+	.option	arch, -c
+	## Use hi_addr
+	# Load
+	lui	t0, 0xfffff
+	lw	s2, -4(t0)
+	# Store
+	lui	t1, 0xffffe
+	sw	s3, -8(t1)
+	# JALR (implicit destination, no offset)
+	lui	t2, 0xffffd
+	jalr	t2
+	# JALR (implicit destination, with offset)
+	lui	t3, 0xffffc
+	jalr	-12(t3)
+	# JALR (explicit destination, no offset)
+	lui	t4, 0xffffb
+	jalr	s4, t4
+	# ADDI (not compressed)
+	lui	t5, 0xffffa
+	addi	s5, t5, -16
+	# C.ADDI
+	lui	t6, 0xffff9
+	.option	pop
+	c.addi	t6, -20
+.ifdef rv64
+	.option	push
+	.option	arch, -c
+	# ADDIW (not compressed)
+	lui	s6, 0xffff8
+	addiw	s7, s6, -24
+	# C.ADDIW
+	lui	s8, 0xffff7
+	.option	pop
+	c.addiw	s8, -28
+.endif
+
+	# Use addresses relative to gp
+	lw	t0, 0x400(gp)
+	lw	t1, -0x400(gp)
+	# Use addresses relative to zero
+	lw	t2, 0x100(zero)
+	lw	t3, -0x800(zero)
+
+	# Access to the highest address
+	lb	t4, -1(zero)

gas/testsuite/gas/riscv/dis-addr-3-32.d

@@ -0,0 +1,12 @@
+#as: -march=rv32i
+#source: dis-addr-3.s
+#objdump: -d
+
+.*:     file format elf32-(little|big)riscv
+
+
+Disassembly of section .text:
+
+0+000 <target>:
+[ 	]+[0-9a-f]+:[ 	]+0051a283[ 	]+lw[   	]+t0,5\(gp\) # 4 <addr_rel_gp_pos>
+[ 	]+[0-9a-f]+:[ 	]+ffd1a303[ 	]+lw[   	]+t1,-3\(gp\) # fffffffc <addr_rel_gp_neg>

gas/testsuite/gas/riscv/dis-addr-3-64.d

@@ -0,0 +1,12 @@
+#as: -march=rv64i -defsym rv64=1
+#source: dis-addr-3.s
+#objdump: -d
+
+.*:     file format elf64-(little|big)riscv
+
+
+Disassembly of section .text:
+
+0+000 <target>:
+[ 	]+[0-9a-f]+:[ 	]+0051a283[ 	]+lw[   	]+t0,5\(gp\) # 4 <addr_rel_gp_pos>
+[ 	]+[0-9a-f]+:[ 	]+ffd1a303[ 	]+lw[   	]+t1,-3\(gp\) # fffffffffffffffc <addr_rel_gp_neg>

gas/testsuite/gas/riscv/dis-addr-3.s

@@ -0,0 +1,15 @@
+.ifdef rv64
+topbase = 0xffffffff00000000
+.else
+topbase = 0
+.endif
+
+.set __global_pointer$, topbase + 0xffffffff  # -1
+.set addr_rel_gp_pos,             0x00000004  # +4
+.set addr_rel_gp_neg,   topbase + 0xfffffffc  # -4
+
+target:
+	# Use addresses relative to gp
+	# (gp is the highest address)
+	lw	t0, +5(gp)
+	lw	t1, -3(gp)