[PATCH v8 1/7] RISC-V: Add address printer tests with ADDIW

Tsukasa OI research_trasio@irq.a4lg.com
Sat Aug 27 00:22:53 GMT 2022


Address sequences involving ADDIW/C.ADDIW instructions require special
handling to sign-extend lower 32-bits of the original result.

This commit tests whether this sign-extension works.

gas/ChangeLog:

	* testsuite/gas/riscv/dis-addr-addiw.s: New to test the address
	computation with sign extension as used in ADDIW/C.ADDIW.
	* testsuite/gas/riscv/dis-addr-addiw-a.d: Test PC sign bit 0.
	* testsuite/gas/riscv/dis-addr-addiw-b.d: Test PC sign bit 1.
---
 gas/testsuite/gas/riscv/dis-addr-addiw-a.d | 18 ++++++++++++++
 gas/testsuite/gas/riscv/dis-addr-addiw-b.d | 18 ++++++++++++++
 gas/testsuite/gas/riscv/dis-addr-addiw.s   | 28 ++++++++++++++++++++++
 3 files changed, 64 insertions(+)
 create mode 100644 gas/testsuite/gas/riscv/dis-addr-addiw-a.d
 create mode 100644 gas/testsuite/gas/riscv/dis-addr-addiw-b.d
 create mode 100644 gas/testsuite/gas/riscv/dis-addr-addiw.s

diff --git a/gas/testsuite/gas/riscv/dis-addr-addiw-a.d b/gas/testsuite/gas/riscv/dis-addr-addiw-a.d
new file mode 100644
index 00000000000..3cd9d4e3805
--- /dev/null
+++ b/gas/testsuite/gas/riscv/dis-addr-addiw-a.d
@@ -0,0 +1,18 @@
+#as: -march=rv64ic
+#source: dis-addr-addiw.s
+#objdump: -d --adjust-vma=0xffffffe0
+
+.*:     file format elf64-(little|big)riscv
+
+
+Disassembly of section .text:
+
+0+ffffffe0 <_start>:
+[ 	]+ffffffe0:[ 	]+00000297[ 	]+auipc[ 	]+t0,0x0
+[ 	]+ffffffe4:[ 	]+0182831b[ 	]+addiw[ 	]+t1,t0,24 # fffffffffffffff8 <addr_rv64_addiw_0a>
+[ 	]+ffffffe8:[ 	]+00000397[ 	]+auipc[ 	]+t2,0x0
+[ 	]+ffffffec:[ 	]+01c38e1b[ 	]+addiw[ 	]+t3,t2,28 # 4 <addr_rv64_addiw_0b>
+[ 	]+fffffff0:[ 	]+00000e97[ 	]+auipc[ 	]+t4,0x0
+[ 	]+fffffff4:[ 	]+2eb1[ 	]+addiw[ 	]+t4,t4,12 # fffffffffffffffc <addr_rv64_c_addiw_0a>
+[ 	]+fffffff6:[ 	]+00000f17[ 	]+auipc[ 	]+t5,0x0
+[ 	]+fffffffa:[ 	]+2f49[ 	]+addiw[ 	]+t5,t5,18 # 8 <addr_rv64_c_addiw_0b>
diff --git a/gas/testsuite/gas/riscv/dis-addr-addiw-b.d b/gas/testsuite/gas/riscv/dis-addr-addiw-b.d
new file mode 100644
index 00000000000..2c68d6b6e5f
--- /dev/null
+++ b/gas/testsuite/gas/riscv/dis-addr-addiw-b.d
@@ -0,0 +1,18 @@
+#as: -march=rv64ic
+#source: dis-addr-addiw.s
+#objdump: -d --adjust-vma=0x7fffffe0
+
+.*:     file format elf64-(little|big)riscv
+
+
+Disassembly of section .text:
+
+0+7fffffe0 <_start>:
+[ 	]+7fffffe0:[ 	]+00000297[ 	]+auipc[ 	]+t0,0x0
+[ 	]+7fffffe4:[ 	]+0182831b[ 	]+addiw[ 	]+t1,t0,24 # 7ffffff8 <addr_rv64_addiw_1a>
+[ 	]+7fffffe8:[ 	]+00000397[ 	]+auipc[ 	]+t2,0x0
+[ 	]+7fffffec:[ 	]+01c38e1b[ 	]+addiw[ 	]+t3,t2,28 # ffffffff80000004 <addr_rv64_addiw_1b>
+[ 	]+7ffffff0:[ 	]+00000e97[ 	]+auipc[ 	]+t4,0x0
+[ 	]+7ffffff4:[ 	]+2eb1[ 	]+addiw[ 	]+t4,t4,12 # 7ffffffc <addr_rv64_c_addiw_1a>
+[ 	]+7ffffff6:[ 	]+00000f17[ 	]+auipc[ 	]+t5,0x0
+[ 	]+7ffffffa:[ 	]+2f49[ 	]+addiw[ 	]+t5,t5,18 # ffffffff80000008 <addr_rv64_c_addiw_1b>
diff --git a/gas/testsuite/gas/riscv/dis-addr-addiw.s b/gas/testsuite/gas/riscv/dis-addr-addiw.s
new file mode 100644
index 00000000000..7c878f86dd6
--- /dev/null
+++ b/gas/testsuite/gas/riscv/dis-addr-addiw.s
@@ -0,0 +1,28 @@
+.set addr_rv64_addiw_0a,   0xfffffffffffffff8  # 0xffffffe0 + 0x18 (sext:32->64)
+.set addr_rv64_c_addiw_0a, 0xfffffffffffffffc  # 0xfffffff0 + 0x0c (sext:32->64)
+.set addr_rv64_addiw_0b,           0x00000004  # 0xffffffe8 + 0x1c
+.set addr_rv64_c_addiw_0b,         0x00000008  # 0xfffffff6 + 0x12
+.set addr_rv64_addiw_1a,           0x7ffffff8  # 0x7fffffe0 + 0x18
+.set addr_rv64_c_addiw_1a,         0x7ffffffc  # 0x7ffffff0 + 0x0c
+.set addr_rv64_addiw_1b,   0xffffffff80000004  # 0x7fffffe8 + 0x1c (sext:32->64)
+.set addr_rv64_c_addiw_1b, 0xffffffff80000008  # 0x7ffffff6 + 0x12 (sext:32->64)
+
+	.text
+	.global	_start
+_start:
+	.option	push
+	.option	arch, -c
+	# _start + 0x00
+	auipc	t0, 0
+	addiw	t1, t0, 0x18
+	# _start + 0x08
+	auipc	t2, 0
+	addiw	t3, t2, 0x1c
+
+	.option	pop
+	# _start + 0x10
+	auipc	t4, 0
+	c.addiw	t4, 0x0c
+	# _start + 0x16
+	auipc	t5, 0
+	c.addiw	t5, 0x12
-- 
2.34.1



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