[PATCH] gas: bpf: new test for MOV with C-like numbers ll suffix

[Jose E. Marchesi]

The BPF pseudo-c syntax supports both MOV and LDDW instructions:

    mov:  r1 = EXPR
    lddw: r1 = EXPR ll

Note that the white space between EXPR and `ll' is necessary in order
to avoid ambiguity with the assembler's support for C-like numerical
suffixes.  This patch adds a new test to the GAS BPF testsuite to make
sure that instructions like:

    r1 = 666ll

are interpreted as `mov %r1,666', not as `lddw %r1,666'.

This matches clang's assembler behavior.

2023-10-30  Jose E. Marchesi  <jose.marchesi@oracle.com>

	* testsuite/gas/bpf/alu-pseudoc.s: Add test to make sure C-like
	suffix `ll' is not interpreted as lddw syntax.
	* testsuite/gas/bpf/alu-pseudoc.d: Update expected results.
	* testsuite/gas/bpf/alu-be-pseudoc.d: Likewise.
---
 gas/ChangeLog                          | 7 +++++++
 gas/testsuite/gas/bpf/alu-be-pseudoc.d | 1 +
 gas/testsuite/gas/bpf/alu-pseudoc.d    | 1 +
 gas/testsuite/gas/bpf/alu-pseudoc.s    | 2 ++
 4 files changed, 11 insertions(+)

diff --git a/gas/ChangeLog b/gas/ChangeLog
index fef3c248196..230a4a73039 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,10 @@
+2023-10-30  Jose E. Marchesi  <jose.marchesi@oracle.com>
+
+	* testsuite/gas/bpf/alu-pseudoc.s: Add test to make sure C-like
+	suffix `ll' is not interpreted as lddw syntax.
+	* testsuite/gas/bpf/alu-pseudoc.d: Update expected results.
+	* testsuite/gas/bpf/alu-be-pseudoc.d: Likewise.
+
 2023-10-02  Nick Clifton  <nickc@redhat.com>
 
 	PR 30861
diff --git a/gas/testsuite/gas/bpf/alu-be-pseudoc.d b/gas/testsuite/gas/bpf/alu-be-pseudoc.d
index 4c0f6ba9ca6..80d167c46ff 100644
--- a/gas/testsuite/gas/bpf/alu-be-pseudoc.d
+++ b/gas/testsuite/gas/bpf/alu-be-pseudoc.d
@@ -69,3 +69,4 @@ Disassembly of section .text:
  1d0:	d7 10 00 00 00 00 00 10 	r1 = bswap16 r1
  1d8:	d7 20 00 00 00 00 00 20 	r2 = bswap32 r2
  1e0:	d7 30 00 00 00 00 00 40 	r3 = bswap64 r3
+ 1e8:	b7 20 00 00 00 00 02 9a 	r2=0x29a
diff --git a/gas/testsuite/gas/bpf/alu-pseudoc.d b/gas/testsuite/gas/bpf/alu-pseudoc.d
index b5ab569563c..ea08c9a10da 100644
--- a/gas/testsuite/gas/bpf/alu-pseudoc.d
+++ b/gas/testsuite/gas/bpf/alu-pseudoc.d
@@ -69,3 +69,4 @@ Disassembly of section .text:
  1d0:	d7 01 00 00 10 00 00 00 	r1 = bswap16 r1
  1d8:	d7 02 00 00 20 00 00 00 	r2 = bswap32 r2
  1e0:	d7 03 00 00 40 00 00 00 	r3 = bswap64 r3
+ 1e8:	b7 02 00 00 9a 02 00 00 	r2=0x29a
\ No newline at end of file
diff --git a/gas/testsuite/gas/bpf/alu-pseudoc.s b/gas/testsuite/gas/bpf/alu-pseudoc.s
index 323a6522f22..3d60d4f7a77 100644
--- a/gas/testsuite/gas/bpf/alu-pseudoc.s
+++ b/gas/testsuite/gas/bpf/alu-pseudoc.s
@@ -61,3 +61,5 @@
         r1 = bswap16 r1
         r2 = bswap32 r2
         r3 = bswap64 r3
+        ;; The following is to be interpreted as a mov, not lddw.
+        r2 = 666ll
-- 
2.30.2