1 files changed, 50 insertions, 25 deletions
diff --git a/linux-user/arm/cpu_loop.c b/linux-user/arm/cpu_loop.c
index 33f63951a9..9aeb9b0087 100644
--- a/linux-user/arm/cpu_loop.c
+++ b/linux-user/arm/cpu_loop.c
@@ -480,32 +480,57 @@ void cpu_loop(CPUARMState *env)
     }
 }
 
-void target_cpu_copy_regs(CPUArchState *env, target_pt_regs *regs)
+void init_main_thread(CPUState *cs, struct image_info *info)
 {
-    CPUState *cpu = env_cpu(env);
-    TaskState *ts = get_task_state(cpu);
-    struct image_info *info = ts->info;
-    int i;
-
-    cpsr_write(env, regs->uregs[16], CPSR_USER | CPSR_EXEC,
-               CPSRWriteByInstr);
-    for(i = 0; i < 16; i++) {
-        env->regs[i] = regs->uregs[i];
-    }
-#if TARGET_BIG_ENDIAN
-    /* Enable BE8.  */
-    if (EF_ARM_EABI_VERSION(info->elf_flags) >= EF_ARM_EABI_VER4
-        && (info->elf_flags & EF_ARM_BE8)) {
-        env->uncached_cpsr |= CPSR_E;
-        env->cp15.sctlr_el[1] |= SCTLR_E0E;
-    } else {
-        env->cp15.sctlr_el[1] |= SCTLR_B;
+    CPUARMState *env = cpu_env(cs);
+    abi_ptr stack = info->start_stack;
+    abi_ptr entry = info->entry;
+
+    cpsr_write(env, ARM_CPU_MODE_USR | (entry & 1 ? CPSR_T : 0),
+               CPSR_USER | CPSR_EXEC, CPSRWriteByInstr);
+
+    env->regs[15] = entry & 0xfffffffe;
+    env->regs[13] = stack;
+
+    /*
+     * Per the SVR4 ABI, r0 contains a pointer to a function to be
+     * registered with atexit.  A value of 0 means we have no such handler.
+     */
+    env->regs[0] = 0;
+
+    /* For uClinux PIC binaries.  */
+    /* XXX: Linux does this only on ARM with no MMU (do we care?) */
+    env->regs[10] = info->start_data;
+
+    /* Support ARM FDPIC.  */
+    if (info_is_fdpic(info)) {
+        /*
+         * As described in the ABI document, r7 points to the loadmap info
+         * prepared by the kernel. If an interpreter is needed, r8 points
+         * to the interpreter loadmap and r9 points to the interpreter
+         * PT_DYNAMIC info. If no interpreter is needed, r8 is zero, and
+         * r9 points to the main program PT_DYNAMIC info.
+         */
+        env->regs[7] = info->loadmap_addr;
+        if (info->interpreter_loadmap_addr) {
+            /* Executable is dynamically loaded.  */
+            env->regs[8] = info->interpreter_loadmap_addr;
+            env->regs[9] = info->interpreter_pt_dynamic_addr;
+        } else {
+            env->regs[8] = 0;
+            env->regs[9] = info->pt_dynamic_addr;
+        }
     }
-    arm_rebuild_hflags(env);
-#endif
 
-    ts->stack_base = info->start_stack;
-    ts->heap_base = info->brk;
-    /* This will be filled in on the first SYS_HEAPINFO call.  */
-    ts->heap_limit = 0;
+    if (TARGET_BIG_ENDIAN) {
+        /* Enable BE8.  */
+        if (EF_ARM_EABI_VERSION(info->elf_flags) >= EF_ARM_EABI_VER4
+            && (info->elf_flags & EF_ARM_BE8)) {
+            env->uncached_cpsr |= CPSR_E;
+            env->cp15.sctlr_el[1] |= SCTLR_E0E;
+        } else {
+            env->cp15.sctlr_el[1] |= SCTLR_B;
+        }
+        arm_rebuild_hflags(env);
+    }
 }