tcg-ppc: Merge cache-utils into the backend

As a "utility", it only supported ppc, and in a way that other tcg backends provided directly in tcg-target.h. Removing this disparity is easier now that the two ppc backends are merged. Tested-by: Tom Musta <[email protected]> Signed-off-by: Richard Henderson <[email protected]>
lisovy · Jun 23, 2014 · 224f9fd · 224f9fd
1 parent 2b45c3f
commit 224f9fd
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Showing 9 changed files with 99 additions and 139 deletions.
diff --git a/exec.c b/exec.c
@@ -50,7 +50,6 @@
 
 #include "exec/memory-internal.h"
 #include "exec/ram_addr.h"
-#include "qemu/cache-utils.h"
 
 #include "qemu/range.h"
 

diff --git a/include/qemu/cache-utils.h b/include/qemu/cache-utils.h
diff --git a/linux-user/main.c b/linux-user/main.c
@@ -28,7 +28,6 @@
 
 #include "qemu.h"
 #include "qemu-common.h"
-#include "qemu/cache-utils.h"
 #include "cpu.h"
 #include "tcg.h"
 #include "qemu/timer.h"
@@ -3829,8 +3828,6 @@ int main(int argc, char **argv, char **envp)
 
     module_call_init(MODULE_INIT_QOM);
 
-    qemu_cache_utils_init();
-
     if ((envlist = envlist_create()) == NULL) {
         (void) fprintf(stderr, "Unable to allocate envlist\n");
         exit(1);

diff --git a/tcg/ppc/tcg-target.c b/tcg/ppc/tcg-target.c
@@ -2538,3 +2538,99 @@ void tcg_register_jit(void *buf, size_t buf_size)
     tcg_register_jit_int(buf, buf_size, &debug_frame, sizeof(debug_frame));
 }
 #endif /* __ELF__ */
+
+static size_t dcache_bsize = 16;
+static size_t icache_bsize = 16;
+
+void flush_icache_range(uintptr_t start, uintptr_t stop)
+{
+    uintptr_t p, start1, stop1;
+    size_t dsize = dcache_bsize;
+    size_t isize = icache_bsize;
+
+    start1 = start & ~(dsize - 1);
+    stop1 = (stop + dsize - 1) & ~(dsize - 1);
+    for (p = start1; p < stop1; p += dsize) {
+        asm volatile ("dcbst 0,%0" : : "r"(p) : "memory");
+    }
+    asm volatile ("sync" : : : "memory");
+
+    start &= start & ~(isize - 1);
+    stop1 = (stop + isize - 1) & ~(isize - 1);
+    for (p = start1; p < stop1; p += isize) {
+        asm volatile ("icbi 0,%0" : : "r"(p) : "memory");
+    }
+    asm volatile ("sync" : : : "memory");
+    asm volatile ("isync" : : : "memory");
+}
+
+#if defined _AIX
+#include <sys/systemcfg.h>
+
+static void __attribute__((constructor)) tcg_cache_init(void)
+{
+    icache_bsize = _system_configuration.icache_line;
+    dcache_bsize = _system_configuration.dcache_line;
+}
+
+#elif defined __linux__
+static void __attribute__((constructor)) tcg_cache_init(void)
+{
+    unsigned long dsize = qemu_getauxval(AT_DCACHEBSIZE);
+    unsigned long isize = qemu_getauxval(AT_ICACHEBSIZE);
+
+    if (dsize == 0 || isize == 0) {
+        if (dsize == 0) {
+            fprintf(stderr, "getauxval AT_DCACHEBSIZE failed\n");
+        }
+        if (isize == 0) {
+            fprintf(stderr, "getauxval AT_ICACHEBSIZE failed\n");
+        }
+        exit(1);
+    }
+    dcache_bsize = dsize;
+    icache_bsize = isize;
+}
+
+#elif defined __APPLE__
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/sysctl.h>
+
+static void __attribute__((constructor)) tcg_cache_init(void)
+{
+    size_t len;
+    unsigned cacheline;
+    int name[2] = { CTL_HW, HW_CACHELINE };
+
+    len = sizeof(cacheline);
+    if (sysctl(name, 2, &cacheline, &len, NULL, 0)) {
+        perror("sysctl CTL_HW HW_CACHELINE failed");
+        exit(1);
+    }
+    dcache_bsize = cacheline;
+    icache_bsize = cacheline;
+}
+
+#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/sysctl.h>
+
+static void __attribute__((constructor)) tcg_cache_init(void)
+{
+    size_t len = 4;
+    unsigned cacheline;
+
+    if (sysctlbyname ("machdep.cacheline_size", &cacheline, &len, NULL, 0)) {
+        fprintf(stderr, "sysctlbyname machdep.cacheline_size failed: %s\n",
+                strerror(errno));
+        exit(1);
+    }
+    dcache_bsize = cacheline;
+    icache_bsize = cacheline;
+}
+#endif
diff --git a/tcg/ppc/tcg-target.h b/tcg/ppc/tcg-target.h
@@ -106,4 +106,6 @@ typedef enum {
 #define TCG_TARGET_HAS_mulsh_i64        1
 #endif
 
+void flush_icache_range(uintptr_t start, uintptr_t stop);
+
 #endif
diff --git a/tcg/tcg.c b/tcg/tcg.c
@@ -37,7 +37,6 @@
 #endif
 
 #include "qemu-common.h"
-#include "qemu/cache-utils.h"
 #include "qemu/host-utils.h"
 #include "qemu/timer.h"
 

diff --git a/util/Makefile.objs b/util/Makefile.objs
@@ -1,7 +1,7 @@
 util-obj-y = osdep.o cutils.o unicode.o qemu-timer-common.o
 util-obj-$(CONFIG_WIN32) += oslib-win32.o qemu-thread-win32.o event_notifier-win32.o
 util-obj-$(CONFIG_POSIX) += oslib-posix.o qemu-thread-posix.o event_notifier-posix.o qemu-openpty.o
-util-obj-y += envlist.o path.o host-utils.o cache-utils.o module.o
+util-obj-y += envlist.o path.o host-utils.o module.o
 util-obj-y += bitmap.o bitops.o hbitmap.o
 util-obj-y += fifo8.o
 util-obj-y += acl.o

diff --git a/util/cache-utils.c b/util/cache-utils.c
diff --git a/vl.c b/vl.c
@@ -82,7 +82,6 @@ int main(int argc, char **argv)
 #include "qemu/timer.h"
 #include "sysemu/char.h"
 #include "qemu/bitmap.h"
-#include "qemu/cache-utils.h"
 #include "sysemu/blockdev.h"
 #include "hw/block/block.h"
 #include "migration/block.h"
@@ -2974,8 +2973,6 @@ int main(int argc, char **argv, char **envp)
 
     rtc_clock = QEMU_CLOCK_HOST;
 
-    qemu_cache_utils_init();
-
     QLIST_INIT (&vm_change_state_head);
     os_setup_early_signal_handling();
-Original file line number
+Diff line change
@@ Expand Up / @@ -106,4 +106,6 @@ typedef enum { @@
     #define TCG_TARGET_HAS_mulsh_i64        1
     #endif
+    void flush_icache_range(uintptr_t start, uintptr_t stop);
     #endif