[Qemu-devel] [PATCH 24/26] tcg-ppc: Merge cache-utils into the backend

[Richard Henderson <rth@twiddle.net>]

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.

Signed-off-by: Richard Henderson <rth@twiddle.net>
---
 exec.c                     |  1 -
 include/qemu/cache-utils.h | 44 ---------------------
 linux-user/main.c          |  3 --
 tcg/ppc/tcg-target.c       | 96 ++++++++++++++++++++++++++++++++++++++++++++++
 tcg/ppc/tcg-target.h       |  2 +
 tcg/tcg.c                  |  1 -
 util/Makefile.objs         |  2 +-
 util/cache-utils.c         | 86 -----------------------------------------
 vl.c                       |  3 --
 9 files changed, 99 insertions(+), 139 deletions(-)
 delete mode 100644 include/qemu/cache-utils.h
 delete mode 100644 util/cache-utils.c

diff --git a/exec.c b/exec.c
index 91513c6..404d7d5 100644
--- 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
deleted file mode 100644
index 211245b..0000000
--- a/include/qemu/cache-utils.h
+++ /dev/null
@@ -1,44 +0,0 @@
-#ifndef QEMU_CACHE_UTILS_H
-#define QEMU_CACHE_UTILS_H
-
-#if defined(_ARCH_PPC)
-
-#include <stdint.h> /* uintptr_t */
-
-struct qemu_cache_conf {
-    unsigned long dcache_bsize;
-    unsigned long icache_bsize;
-};
-
-extern struct qemu_cache_conf qemu_cache_conf;
-
-void qemu_cache_utils_init(void);
-
-/* mildly adjusted code from tcg-dyngen.c */
-static inline void flush_icache_range(uintptr_t start, uintptr_t stop)
-{
-    unsigned long p, start1, stop1;
-    unsigned long dsize = qemu_cache_conf.dcache_bsize;
-    unsigned long isize = qemu_cache_conf.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");
-}
-
-#else
-#define qemu_cache_utils_init() do { } while (0)
-#endif
-
-#endif /* QEMU_CACHE_UTILS_H */
diff --git a/linux-user/main.c b/linux-user/main.c
index 0047eff..799da56 100644
--- 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"
@@ -3823,8 +3822,6 @@ 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
index 7bbb02e..8570c6f 100644
--- a/tcg/ppc/tcg-target.c
+++ b/tcg/ppc/tcg-target.c
@@ -2535,3 +2535,99 @@ 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
index 5ba7a2e..ec41a47 100644
--- a/tcg/ppc/tcg-target.h
+++ b/tcg/ppc/tcg-target.h
@@ -108,4 +108,6 @@ typedef enum {
 
 #define TCG_TARGET_HAS_new_ldst         1
 
+void flush_icache_range(uintptr_t start, uintptr_t stop);
+
 #endif
diff --git a/tcg/tcg.c b/tcg/tcg.c
index bb2e8c2..3599b03 100644
--- 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
index df83b62..6b3c83b 100644
--- 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
deleted file mode 100644
index 0470030..0000000
--- a/util/cache-utils.c
+++ /dev/null
@@ -1,86 +0,0 @@
-#include "qemu-common.h"
-#include "qemu/cache-utils.h"
-
-#if defined(_ARCH_PPC)
-struct qemu_cache_conf qemu_cache_conf = {
-    .dcache_bsize = 16,
-    .icache_bsize = 16
-};
-
-#if defined _AIX
-#include <sys/systemcfg.h>
-
-void qemu_cache_utils_init(void)
-{
-    qemu_cache_conf.icache_bsize = _system_configuration.icache_line;
-    qemu_cache_conf.dcache_bsize = _system_configuration.dcache_line;
-}
-
-#elif defined __linux__
-#include "qemu/osdep.h"
-#include "elf.h"
-
-void qemu_cache_utils_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);
-
-    }
-    qemu_cache_conf.dcache_bsize = dsize;
-    qemu_cache_conf.icache_bsize = isize;
-}
-
-#elif defined __APPLE__
-#include <stdio.h>
-#include <sys/types.h>
-#include <sys/sysctl.h>
-
-void qemu_cache_utils_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");
-    } else {
-        qemu_cache_conf.dcache_bsize = cacheline;
-        qemu_cache_conf.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>
-
-void qemu_cache_utils_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);
-    }
-
-    qemu_cache_conf.dcache_bsize = cacheline;
-    qemu_cache_conf.icache_bsize = cacheline;
-}
-#endif
-
-#endif /* _ARCH_PPC */
diff --git a/vl.c b/vl.c
index 5b19c3f..1ade89b 100644
--- 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"
@@ -3010,8 +3009,6 @@ int main(int argc, char **argv, char **envp)
     init_clocks();
     rtc_clock = QEMU_CLOCK_HOST;
 
-    qemu_cache_utils_init();
-
     QLIST_INIT (&vm_change_state_head);
     os_setup_early_signal_handling();
 
-- 
1.9.0