[PATCH 1/2] hw/sparc: Allow building the leon3 machine stand-alone

["Philippe Mathieu-Daudé" <f4bug@amsat.org>]

When building only the leon3 machine, we get this link failure:

  /usr/bin/ld: target_sparc_win_helper.c.o: in function `cpu_put_psr':
  target/sparc/win_helper.c:91: undefined reference to `cpu_check_irqs'

This is because cpu_check_irqs() is defined in hw/sparc/sun4m.c,
which is only built if the base sun4m machines are built (with
the CONFIG_SUN4M selector).

Fix by moving cpu_check_irqs() out of hw/sparc/sun4m.c and build
it unconditionally.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 hw/sparc/irq.c       | 61 ++++++++++++++++++++++++++++++++++++++++++++
 hw/sparc/sun4m.c     | 32 -----------------------
 hw/sparc/meson.build |  1 +
 3 files changed, 62 insertions(+), 32 deletions(-)
 create mode 100644 hw/sparc/irq.c

diff --git a/hw/sparc/irq.c b/hw/sparc/irq.c
new file mode 100644
index 00000000000..e34639f266e
--- /dev/null
+++ b/hw/sparc/irq.c
@@ -0,0 +1,61 @@
+/*
+ * QEMU Sun4m & Sun4d & Sun4c IRQ handling
+ *
+ * Copyright (c) 2003-2005 Fabrice Bellard
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/main-loop.h"
+#include "hw/irq.h"
+#include "cpu.h"
+#include "trace.h"
+
+void cpu_check_irqs(CPUSPARCState *env)
+{
+    CPUState *cs;
+
+    /* We should be holding the BQL before we mess with IRQs */
+    g_assert(qemu_mutex_iothread_locked());
+
+    if (env->pil_in && (env->interrupt_index == 0 ||
+                        (env->interrupt_index & ~15) == TT_EXTINT)) {
+        unsigned int i;
+
+        for (i = 15; i > 0; i--) {
+            if (env->pil_in & (1 << i)) {
+                int old_interrupt = env->interrupt_index;
+
+                env->interrupt_index = TT_EXTINT | i;
+                if (old_interrupt != env->interrupt_index) {
+                    cs = env_cpu(env);
+                    trace_sun4m_cpu_interrupt(i);
+                    cpu_interrupt(cs, CPU_INTERRUPT_HARD);
+                }
+                break;
+            }
+        }
+    } else if (!env->pil_in && (env->interrupt_index & ~15) == TT_EXTINT) {
+        cs = env_cpu(env);
+        trace_sun4m_cpu_reset_interrupt(env->interrupt_index & 15);
+        env->interrupt_index = 0;
+        cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
+    }
+}
diff --git a/hw/sparc/sun4m.c b/hw/sparc/sun4m.c
index 1a00816d9a8..2edf913d945 100644
--- a/hw/sparc/sun4m.c
+++ b/hw/sparc/sun4m.c
@@ -159,38 +159,6 @@ static void nvram_init(Nvram *nvram, uint8_t *macaddr,
     }
 }
 
-void cpu_check_irqs(CPUSPARCState *env)
-{
-    CPUState *cs;
-
-    /* We should be holding the BQL before we mess with IRQs */
-    g_assert(qemu_mutex_iothread_locked());
-
-    if (env->pil_in && (env->interrupt_index == 0 ||
-                        (env->interrupt_index & ~15) == TT_EXTINT)) {
-        unsigned int i;
-
-        for (i = 15; i > 0; i--) {
-            if (env->pil_in & (1 << i)) {
-                int old_interrupt = env->interrupt_index;
-
-                env->interrupt_index = TT_EXTINT | i;
-                if (old_interrupt != env->interrupt_index) {
-                    cs = env_cpu(env);
-                    trace_sun4m_cpu_interrupt(i);
-                    cpu_interrupt(cs, CPU_INTERRUPT_HARD);
-                }
-                break;
-            }
-        }
-    } else if (!env->pil_in && (env->interrupt_index & ~15) == TT_EXTINT) {
-        cs = env_cpu(env);
-        trace_sun4m_cpu_reset_interrupt(env->interrupt_index & 15);
-        env->interrupt_index = 0;
-        cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
-    }
-}
-
 static void cpu_kick_irq(SPARCCPU *cpu)
 {
     CPUSPARCState *env = &cpu->env;
diff --git a/hw/sparc/meson.build b/hw/sparc/meson.build
index 19c442c90d9..470159ff659 100644
--- a/hw/sparc/meson.build
+++ b/hw/sparc/meson.build
@@ -1,4 +1,5 @@
 sparc_ss = ss.source_set()
+sparc_ss.add(files('irq.c'))
 sparc_ss.add(when: 'CONFIG_LEON3', if_true: files('leon3.c'))
 sparc_ss.add(when: 'CONFIG_SUN4M', if_true: files('sun4m.c'))
 sparc_ss.add(when: 'CONFIG_SUN4M', if_true: files('sun4m_iommu.c'))
-- 
2.26.3