e2k: Add e2k32 linux user files.

Signed-off-by: Denis Drakhnya <numas13@gmail.com>

configs/targets/e2k32-linux-user.mak

@@ -0,0 +1,3 @@
+TARGET_ARCH=e2k32
+TARGET_BASE_ARCH=e2k
+TARGET_ABI32=y

linux-user/e2k32/cpu_loop.c

@@ -0,0 +1 @@
+#include "../e2k/cpu_loop.c"

linux-user/e2k32/signal.c

@@ -0,0 +1 @@
+#include "../e2k/signal.c"

linux-user/e2k32/sockbits.h

@@ -0,0 +1 @@
+#include "../generic/sockbits.h"

linux-user/e2k32/syscall_nr.h

@@ -0,0 +1 @@
+#include "../e2k/syscall_nr.h"

linux-user/e2k32/target_cpu.h

@@ -0,0 +1 @@
+#include "../e2k/target_cpu.h"

linux-user/e2k32/target_elf.h

@@ -0,0 +1 @@
+#include "../e2k/target_elf.h"

linux-user/e2k32/target_fcntl.h

@@ -0,0 +1,4 @@
+#ifndef E2K32_TARGET_FCNTL_H
+#define E2K32_TARGET_FCNTL_H
+#include "../generic/fcntl.h"
+#endif

linux-user/e2k32/target_signal.h

@@ -0,0 +1,26 @@
+#ifndef E2K32_TARGET_SIGNAL_H
+#define E2K32_TARGET_SIGNAL_H
+
+/*
+ * sigaltstack controls
+ */
+#define TARGET_SS_ONSTACK      1
+#define TARGET_SS_DISABLE      2
+
+#define TARGET_MINSIGSTKSZ     4096
+#define TARGET_SIGSTKSZ        8192
+#define TARGET_MCL_CURRENT 1
+#define TARGET_MCL_FUTURE 2
+#define TARGET_MCL_ONFAULT 4
+
+#define TARGET_ARCH_HAS_SETUP_FRAME
+
+typedef struct target_sigaltstack {
+    abi_ulong ss_sp;
+    abi_int   ss_flags;
+    abi_ulong ss_size;
+} target_stack_t;
+
+#include "../generic/signal.h"
+
+#endif /* E2K32_TARGET_SIGNAL_H */

linux-user/e2k32/target_structs.h

@@ -0,0 +1 @@
+#include "../e2k/target_structs.h"

linux-user/e2k32/target_syscall.h

@@ -0,0 +1 @@
+#include "../e2k/target_syscall.h"

linux-user/e2k32/termbits.h

@@ -0,0 +1,6 @@
+#ifndef _E2K_TERMBITS_H_
+#define _E2K_TERMBITS_H_
+
+#include "../generic/termbits.h"
+
+#endif /* _E2K_TERMBITS_H_ */

linux-user/syscall.c

@@ -7089,6 +7089,47 @@ static abi_long do_e2k_longjmp2(CPUE2KState *env, struct target_jmp_info *jmp_in
 
     return 0;
 }
+
+static abi_long do_e2k_access_hw_stacks(CPUState *cpu, abi_ulong arg2,
+    abi_ulong arg3, abi_ulong arg4, abi_ulong arg5, abi_ulong arg6)
+{
+    E2KCPU *e2k_cpu = E2K_CPU(cpu);
+    CPUE2KState *env = &e2k_cpu->env;
+    int ret = 0;
+    abi_ulong mode = arg2;
+    abi_ulong frame_addr = arg3; // __user (abi_ullong *)
+//    abi_ulong buf_addr = arg4; // __user (char *)
+//    abi_ulong buf_size = arg5;
+    abi_ulong size_addr = arg6; // __user (void *)
+
+    switch (mode) {
+    case GET_PROCEDURE_STACK_SIZE:
+        ret = put_user(env->psp.index, size_addr, target_ulong);
+        break;
+    case GET_CHAIN_STACK_SIZE:
+        ret = put_user(env->pcsp.index, size_addr, target_ulong);
+        break;
+    case GET_CHAIN_STACK_OFFSET:
+        ret = -TARGET_ENOSYS;
+        break;
+    case READ_CHAIN_STACK_EX:
+    {
+        abi_ullong frame = 0;
+        copy_user();
+
+        break;
+    }
+    case READ_CHAIN_STACK:
+    case READ_PROCEDURE_STACK:
+    case WRITE_PROCEDURE_STACK:
+    case READ_PROCEDURE_STACK_EX:
+    case WRITE_PROCEDURE_STACK_EX:
+    case WRITE_CHAIN_STACK_EX:
+        return -TARGET_ENOSYS;
+    }
+    return ret;
+}
+
 #endif /* end of TARGET_E2K */
 
 static abi_long do_fcntl(int fd, int cmd, abi_ulong arg)
@@ -11999,24 +12040,16 @@ static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1,
         if (ret) {
             break;
         }
-        do_e2k_longjmp2(env, &ji);
+        ret = do_e2k_longjmp2(env, &ji);
+        if (ret) {
+            break;
+        }
         return arg2;
     }
 #endif
 #ifdef TARGET_NR_access_hw_stacks
     case TARGET_NR_access_hw_stacks:
-    {
-#if 0
-        abi_ulong mode = arg2;
-        abi_ulong frame_ptr = arg3; // __user (abi_ullong *)
-        abi_ulong buf = arg4; // __user (char *)
-        abi_ulong buf_size = arg5;
-        abi_ulong real_size = arg6; // __user (void *)
-#endif
-
-        // TODO: e2k_sys_access_hw_stacks
-        return -TARGET_ENOSYS;
-    }
+        return do_e2k_access_hw_stacks(cpu, arg1, arg2, arg3, arg4, arg5);
 #endif
 #ifdef CONFIG_ATTR
 #ifdef TARGET_NR_setxattr

target/e2k/helper-tcg.h

@@ -0,0 +1,37 @@
+/*
+ * e2k TCG specific prototypes for helpers
+ *
+ * Copyright (c) 2020-2021 Denis Drakhnya, Alibek Omarov
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef E2K_HELPER_TCG_H
+#define E2K_HELPER_TCG_H
+
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "exec/exec-all.h"
+
+/* helper.c */
+void G_NORETURN raise_exception(CPUE2KState *env, int exception_index);
+void G_NORETURN raise_exception_ra(CPUE2KState *env, int exception_index,
+    uintptr_t retaddr);
+
+#endif /* E2K_HELPER_TCG_H */