[MIPS] Implementation of sel_ldr for MIPS architecture.

src/trusted/service_runtime/arch/mips/sel_ldr_mips.h

+/*
+ * Copyright 2012 The Native Client Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can
+ * be found in the LICENSE file.
+ */
+
+#ifndef SERVICE_RUNTIME_ARCH_MIPS_SEL_LDR_H__
+#define SERVICE_RUNTIME_ARCH_MIPS_SEL_LDR_H__ 1
+
+#include "native_client/src/include/portability.h"
+#include "native_client/src/trusted/service_runtime/nacl_config.h"
+
+#define NACL_MAX_ADDR_BITS      30
+
+#define NACL_ADDRSPACE_LOWER_GUARD_SIZE 0
+#define NACL_ADDRSPACE_UPPER_GUARD_SIZE 0x2000
+
+/* Must be synced with irt_compatible_rodata_addr in SConstruct */
+#define NACL_DATA_SEGMENT_START 0x10000000
+
+#define NACL_THREAD_MAX         4096

[Mark Seaborn, 2012/09/08 02:43:14]

On ARM/x86 we use 8192.  Any reason this is lower?  Just curious.

[petarj, 2012/09/11 16:58:13]

For historical reasons. We can switch on 8192 now. Changed.

+
+#define NACL_NOOP_OPCODE        0x00000000  /* nop */
+#define NACL_HALT_OPCODE        0x00000008  /* jr $0 */
+#define NACL_HALT_LEN           4           /* length of halt instruction */
+#define NACL_HALT_WORD          NACL_HALT_OPCODE
+
+struct NaClApp;
+struct NaClThreadContext;
+
+uint32_t NaClGetThreadCombinedDescriptor(struct NaClThreadContext *user);

[Mark Seaborn, 2012/09/08 02:43:14]

This is not defined anywhere in your change.  Neither is the function below.

[petarj, 2012/09/11 16:58:13]

Done. (hint: you may want to remove it from the ARM header as well)

[Mark Seaborn, 2012/09/13 19:44:36]

Thanks for pointing that out.  I've done that in
https://chromiumcodereview.appspot.com/10919217.

+
+void NaClSetThreadCombinedDescriptor(struct NaClThreadContext *user,
+                                     uint32_t tls_idx);
+
+#endif /* SERVICE_RUNTIME_ARCH_MIPS_SEL_LDR_H__ */