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tcg-ppc: Merge cache-utils into the backend

Browse Source 
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 <tommusta@gmail.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2014-04-30 13:56:50 -07:00
parent 2b45c3f500
commit 224f9fd419
9 changed files with 99 additions and 139 deletions
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1
exec.c
View File

@ -50,7 +50,6 @@
#include "exec/memory-internal.h"
#include "exec/ram_addr.h"
#include "qemu/cache-utils.h"
#include "qemu/range.h"

44
include/qemu/cache-utils.h
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@ -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 */

3
linux-user/main.c
View File

@ -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);

96
tcg/ppc/tcg-target.c
View File

@ -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

2
tcg/ppc/tcg-target.h
View File

@ -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

1
tcg/tcg.c
View File

@ -37,7 +37,6 @@
#endif
#include "qemu-common.h"
#include "qemu/cache-utils.h"
#include "qemu/host-utils.h"
#include "qemu/timer.h"

2
util/Makefile.objs
View File

@ -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

86
util/cache-utils.c
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@ -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 */

3
vl.c
View File

@ -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();