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-rw-r--r--qemu/include/exec/softmmu-semi.h80
1 files changed, 80 insertions, 0 deletions
diff --git a/qemu/include/exec/softmmu-semi.h b/qemu/include/exec/softmmu-semi.h
new file mode 100644
index 000000000..1819cc249
--- /dev/null
+++ b/qemu/include/exec/softmmu-semi.h
@@ -0,0 +1,80 @@
+/*
+ * Helper routines to provide target memory access for semihosting
+ * syscalls in system emulation mode.
+ *
+ * Copyright (c) 2007 CodeSourcery.
+ *
+ * This code is licensed under the GPL
+ */
+#ifndef SOFTMMU_SEMI_H
+#define SOFTMMU_SEMI_H 1
+
+static inline uint32_t softmmu_tget32(CPUArchState *env, target_ulong addr)
+{
+ uint32_t val;
+
+ cpu_memory_rw_debug(ENV_GET_CPU(env), addr, (uint8_t *)&val, 4, 0);
+ return tswap32(val);
+}
+static inline uint32_t softmmu_tget8(CPUArchState *env, target_ulong addr)
+{
+ uint8_t val;
+
+ cpu_memory_rw_debug(ENV_GET_CPU(env), addr, &val, 1, 0);
+ return val;
+}
+
+#define get_user_u32(arg, p) ({ arg = softmmu_tget32(env, p) ; 0; })
+#define get_user_u8(arg, p) ({ arg = softmmu_tget8(env, p) ; 0; })
+#define get_user_ual(arg, p) get_user_u32(arg, p)
+
+static inline void softmmu_tput32(CPUArchState *env,
+ target_ulong addr, uint32_t val)
+{
+ val = tswap32(val);
+ cpu_memory_rw_debug(ENV_GET_CPU(env), addr, (uint8_t *)&val, 4, 1);
+}
+#define put_user_u32(arg, p) ({ softmmu_tput32(env, p, arg) ; 0; })
+#define put_user_ual(arg, p) put_user_u32(arg, p)
+
+static void *softmmu_lock_user(CPUArchState *env,
+ target_ulong addr, target_ulong len, int copy)
+{
+ uint8_t *p;
+ /* TODO: Make this something that isn't fixed size. */
+ p = malloc(len);
+ if (p && copy) {
+ cpu_memory_rw_debug(ENV_GET_CPU(env), addr, p, len, 0);
+ }
+ return p;
+}
+#define lock_user(type, p, len, copy) softmmu_lock_user(env, p, len, copy)
+static char *softmmu_lock_user_string(CPUArchState *env, target_ulong addr)
+{
+ char *p;
+ char *s;
+ uint8_t c;
+ /* TODO: Make this something that isn't fixed size. */
+ s = p = malloc(1024);
+ if (!s) {
+ return NULL;
+ }
+ do {
+ cpu_memory_rw_debug(ENV_GET_CPU(env), addr, &c, 1, 0);
+ addr++;
+ *(p++) = c;
+ } while (c);
+ return s;
+}
+#define lock_user_string(p) softmmu_lock_user_string(env, p)
+static void softmmu_unlock_user(CPUArchState *env, void *p, target_ulong addr,
+ target_ulong len)
+{
+ if (len) {
+ cpu_memory_rw_debug(ENV_GET_CPU(env), addr, p, len, 1);
+ }
+ free(p);
+}
+#define unlock_user(s, args, len) softmmu_unlock_user(env, s, args, len)
+
+#endif