diff options
| -rw-r--r-- | linux-user/arm/syscall.h | 2 | ||||
| -rw-r--r-- | linux-user/main.c | 35 |
2 files changed, 33 insertions, 4 deletions
diff --git a/linux-user/arm/syscall.h b/linux-user/arm/syscall.h index 34153c998d..0ced33ee5b 100644 --- a/linux-user/arm/syscall.h +++ b/linux-user/arm/syscall.h @@ -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) diff --git a/linux-user/main.c b/linux-user/main.c index 6018292304..2af888fddc 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -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++) { |