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ARM cache flush support (untested) - '-d' option fix 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@748 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2004-04-25 18:00:45 +00:00
parent 5467a72294
commit 6f1f31c069
2 changed files with 33 additions and 4 deletions
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2
linux-user/arm/syscall.h
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@ -26,3 +26,5 @@ struct target_pt_regs {
#define ARM_ORIG_r0 uregs[17]
#define ARM_SYSCALL_BASE 0x900000
#define ARM_NR_cacheflush (ARM_SYSCALL_BASE + 0xf0000 + 2)

35
linux-user/main.c
View File

@ -246,6 +246,27 @@ void cpu_loop(CPUX86State *env)
#ifdef TARGET_ARM
/* XXX: find a better solution */
extern void tb_invalidate_page_range(target_ulong start, target_ulong end);
static void arm_cache_flush(target_ulong start, target_ulong last)
{
target_ulong addr, last1;
if (last < start)
return;
addr = start;
for(;;) {
last1 = ((addr + TARGET_PAGE_SIZE) & TARGET_PAGE_MASK) - 1;
if (last1 > last)
last1 = last;
tb_invalidate_page_range(addr, last1 + 1);
if (last1 == last)
break;
addr = last1 + 1;
}
}
void cpu_loop(CPUARMState *env)
{
int trapnr;
@ -281,7 +302,9 @@ void cpu_loop(CPUARMState *env)
/* system call */
insn = ldl((void *)(env->regs[15] - 4));
n = insn & 0xffffff;
if (n >= ARM_SYSCALL_BASE) {
if (n == ARM_NR_cacheflush) {
arm_cache_flush(env->regs[0], env->regs[1]);
} else if (n >= ARM_SYSCALL_BASE) {
/* linux syscall */
n -= ARM_SYSCALL_BASE;
env->regs[0] = do_syscall(env,
@ -792,7 +815,7 @@ void cpu_loop(CPUPPCState *env)
void usage(void)
{
printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
"usage: qemu-" TARGET_ARCH " [-h] [-d] [-L path] [-s size] program [arguments...]\n"
"usage: qemu-" TARGET_ARCH " [-h] [-d opts] [-L path] [-s size] program [arguments...]\n"
"Linux CPU emulator (compiled for %s emulation)\n"
"\n"
"-h print this help\n"
@ -803,7 +826,7 @@ void usage(void)
#ifdef USE_CODE_COPY
"-no-code-copy disable code copy acceleration\n"
#endif
"-d activate log (logfile=%s)\n"
"-d options activate log (logfile=%s)\n"
"-p pagesize set the host page size to 'pagesize'\n",
TARGET_ARCH,
interp_prefix,
@ -850,8 +873,12 @@ int main(int argc, char **argv)
} else if (!strcmp(r, "d")) {
int mask;
CPULogItem *item;
if (optind >= argc)
break;
mask = cpu_str_to_log_mask(optarg);
r = argv[optind++];
mask = cpu_str_to_log_mask(r);
if (!mask) {
printf("Log items (comma separated):\n");
for(item = cpu_log_items; item->mask != 0; item++) {