Merge tag 'pull-tcg-20250117' of https://gitlab.com/rth7680/qemu into staging

tcg:
  - Add TCGOP_TYPE, TCGOP_FLAGS.
  - Pass type and flags to tcg_op_supported, tcg_target_op_def.
  - Split out tcg-target-has.h and unexport from tcg.h.
  - Reorg constraint processing; constify TCGOpDef.
  - Make extract, sextract, deposit opcodes mandatory.
  - Merge ext{8,16,32}{s,u} opcodes into {s}extract.
tcg/mips: Expand bswap unconditionally
tcg/riscv: Use SRAIW, SRLIW for {s}extract_i64
tcg/riscv: Use BEXTI for single-bit extractions
tcg/sparc64: Use SRA, SRL for {s}extract_i64

disas/riscv: Guard dec->cfg dereference for host disassemble
util/cpuinfo-riscv: Detect Zbs
accel/tcg: Call tcg_tb_insert() for one-insn TBs
linux-user: Add missing /proc/cpuinfo fields for sparc

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* tag 'pull-tcg-20250117' of https://gitlab.com/rth7680/qemu: (68 commits)
  softfloat: Constify helpers returning float_status field
  accel/tcg: Call tcg_tb_insert() for one-insn TBs
  tcg: Document tb_lookup() and tcg_tb_lookup()
  linux-user: Add missing /proc/cpuinfo fields for sparc
  tcg/riscv: Use BEXTI for single-bit extractions
  util/cpuinfo-riscv: Detect Zbs
  tcg: Remove TCG_TARGET_HAS_deposit_{i32,i64}
  tcg: Remove TCG_TARGET_HAS_{s}extract_{i32,i64}
  tcg/tci: Remove assertions for deposit and extract
  tcg/tci: Provide TCG_TARGET_{s}extract_valid
  tcg/sparc64: Use SRA, SRL for {s}extract_i64
  tcg/s390x: Fold the ext{8,16,32}[us] cases into {s}extract
  tcg/riscv: Use SRAIW, SRLIW for {s}extract_i64
  tcg/riscv64: Fold the ext{8,16,32}[us] cases into {s}extract
  tcg/ppc: Fold the ext{8,16,32}[us] cases into {s}extract
  tcg/mips: Fold the ext{8,16,32}[us] cases into {s}extract
  tcg/loongarch64: Fold the ext{8,16,32}[us] cases into {s}extract
  tcg/arm: Add full [US]XT[BH] into {s}extract
  tcg/aarch64: Expand extract with offset 0 with andi
  tcg/aarch64: Provide TCG_TARGET_{s}extract_valid
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 16 insertions, 2 deletions

diff --git a/util/cpuinfo-riscv.c b/util/cpuinfo-riscv.c
index 971c924012..0291b7218a 100644
--- a/util/cpuinfo-riscv.c
+++ b/util/cpuinfo-riscv.c
@@ -36,7 +36,8 @@ static void sigill_handler(int signo, siginfo_t *si, void *data)
 /* Called both as constructor and (possibly) via other constructors. */
 unsigned __attribute__((constructor)) cpuinfo_init(void)
 {
-    unsigned left = CPUINFO_ZBA | CPUINFO_ZBB | CPUINFO_ZICOND | CPUINFO_ZVE64X;
+    unsigned left = CPUINFO_ZBA | CPUINFO_ZBB | CPUINFO_ZBS
+                  | CPUINFO_ZICOND | CPUINFO_ZVE64X;
     unsigned info = cpuinfo;
 
     if (info) {
@@ -50,6 +51,9 @@ unsigned __attribute__((constructor)) cpuinfo_init(void)
 #if defined(__riscv_arch_test) && defined(__riscv_zbb)
     info |= CPUINFO_ZBB;
 #endif
+#if defined(__riscv_arch_test) && defined(__riscv_zbs)
+    info |= CPUINFO_ZBS;
+#endif
 #if defined(__riscv_arch_test) && defined(__riscv_zicond)
     info |= CPUINFO_ZICOND;
 #endif
@@ -71,7 +75,8 @@ unsigned __attribute__((constructor)) cpuinfo_init(void)
             && pair.key >= 0) {
             info |= pair.value & RISCV_HWPROBE_EXT_ZBA ? CPUINFO_ZBA : 0;
             info |= pair.value & RISCV_HWPROBE_EXT_ZBB ? CPUINFO_ZBB : 0;
-            left &= ~(CPUINFO_ZBA | CPUINFO_ZBB);
+            info |= pair.value & RISCV_HWPROBE_EXT_ZBS ? CPUINFO_ZBS : 0;
+            left &= ~(CPUINFO_ZBA | CPUINFO_ZBB | CPUINFO_ZBS);
 #ifdef RISCV_HWPROBE_EXT_ZICOND
             info |= pair.value & RISCV_HWPROBE_EXT_ZICOND ? CPUINFO_ZICOND : 0;
             left &= ~CPUINFO_ZICOND;
@@ -117,6 +122,15 @@ unsigned __attribute__((constructor)) cpuinfo_init(void)
             left &= ~CPUINFO_ZBB;
         }
 
+        if (left & CPUINFO_ZBS) {
+            /* Probe for Zbs: bext zero,zero,zero. */
+            got_sigill = 0;
+            asm volatile(".insn r 0x33, 5, 0x24, zero, zero, zero"
+                         : : : "memory");
+            info |= got_sigill ? 0 : CPUINFO_ZBS;
+            left &= ~CPUINFO_ZBS;
+        }
+
         if (left & CPUINFO_ZICOND) {
             /* Probe for Zicond: czero.eqz zero,zero,zero. */
             got_sigill = 0;