[PATCH] sim: riscv: fix build breakage with rvv changes

[Vineet Gupta <vineetg@rivosinc.com>]

changes to gas for riscv vector extensions need to be propagated to sim
otherwise gdb fails to build on users/riscv/binutils-integration-branch

This patch currently applies to that branch.

Fixes: 144cceb058e "(RISC-V/rvv: Add rvv v0.10 instructions.)"
Reported-by: Dylan Reid <dylan@rivosinc.com>
Signed-off-by: Vineet Gupta <vineetg@rivosinc.com>
---
 sim/riscv/ChangeLog-2021 | 4 ++++
 sim/riscv/sim-main.c     | 3 ++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/sim/riscv/ChangeLog-2021 b/sim/riscv/ChangeLog-2021
index e9aa74490f12..9ced6773bdd6 100644
--- a/sim/riscv/ChangeLog-2021
+++ b/sim/riscv/ChangeLog-2021
@@ -1,3 +1,7 @@
+2021-20-28  Vineet Gupta  <vineetg@rivosinc.com>
+
+	* sim-main.c (step_once): Fix match_func call per gas changes.
+
 2021-07-01  Mike Frysinger  <vapier@gentoo.org>
 
 	* configure: Regenerate.
diff --git a/sim/riscv/sim-main.c b/sim/riscv/sim-main.c
index 0faf9395ae52..9b4f7c6c5aad 100644
--- a/sim/riscv/sim-main.c
+++ b/sim/riscv/sim-main.c
@@ -956,6 +956,7 @@ void step_once (SIM_CPU *cpu)
   sim_cia pc = cpu->pc;
   const struct riscv_opcode *op;
   int xlen = RISCV_XLEN (cpu);
+  const char *error = NULL;
 
   if (TRACE_ANY_P (cpu))
     trace_prefix (sd, cpu, NULL_CIA, pc, TRACE_LINENUM_P (cpu),
@@ -985,7 +986,7 @@ void step_once (SIM_CPU *cpu)
   for (; op->name; op++)
     {
       /* Does the opcode match?  */
-      if (! op->match_func (op, iw))
+      if (! op->match_func (op, iw, 0, /* check_constraints */ &error))
 	continue;
       /* Is this a pseudo-instruction and may we print it as such?  */
       if (op->pinfo & INSN_ALIAS)
-- 
2.30.2