From: Dejan Latinovic <Dejan.Latinovic@imgtec.com>
Date: Thu, 5 Mar 2015 16:51:44 -0800
Subject: [PATCH 1/3] add-mips64-support-headers
Origin: https://git.kernel.org/cgit/libs/klibc/klibc.git/commit/?id=493f9a99220aed4eb7c6e3dd9018c037d45b13e2

Description: Added header files for mips64.
Modeled on mips 32 header files and adapted for 64 bit ABI.
 - archsetjmp.h: do not save floating-point state
 - asm.h:        Symbolic register names for 64 bit ABI
---
 usr/include/arch/mips64/klibc/archconfig.h |  5 ++
 usr/include/arch/mips64/klibc/archsetjmp.h | 26 ++++++++++
 usr/include/arch/mips64/machine/asm.h      | 82 ++++++++++++++++++++++++++++++
 usr/include/fcntl.h                        |  2 +-
 4 files changed, 114 insertions(+), 1 deletion(-)
 create mode 100644 usr/include/arch/mips64/klibc/archsetjmp.h
 create mode 100644 usr/include/arch/mips64/machine/asm.h

diff --git a/usr/include/arch/mips64/klibc/archconfig.h b/usr/include/arch/mips64/klibc/archconfig.h
index 4d856a5..df3cf1c 100644
--- a/usr/include/arch/mips64/klibc/archconfig.h
+++ b/usr/include/arch/mips64/klibc/archconfig.h
@@ -12,7 +12,12 @@
 /* MIPS has nonstandard socket definitions */
 #define _KLIBC_HAS_ARCHSOCKET_H 1
 
+#define _KLIBC_STATFS_F_TYPE_64 1
+
 /* We can use RT signals on MIPS */
 #define _KLIBC_USE_RT_SIG 1
 
+/* MIPS has architecture-specific code for vfork() */
+#define _KLIBC_REAL_VFORK 1
+
 #endif				/* _KLIBC_ARCHCONFIG_H */
diff --git a/usr/include/arch/mips64/klibc/archsetjmp.h b/usr/include/arch/mips64/klibc/archsetjmp.h
new file mode 100644
index 0000000..c4587dc
--- /dev/null
+++ b/usr/include/arch/mips64/klibc/archsetjmp.h
@@ -0,0 +1,26 @@
+/*
+ * arch/mips64/include/klibc/archsetjmp.h
+ */
+
+#ifndef _KLIBC_ARCHSETJMP_H
+#define _KLIBC_ARCHSETJMP_H
+
+struct __jmp_buf {
+	unsigned long __s0;
+	unsigned long __s1;
+	unsigned long __s2;
+	unsigned long __s3;
+	unsigned long __s4;
+	unsigned long __s5;
+	unsigned long __s6;
+	unsigned long __s7;
+	unsigned long __gp;
+	unsigned long __sp;
+	unsigned long __s8;
+	unsigned long __ra;
+	unsigned long __unused;
+} __attribute__ ((aligned(8)));
+
+typedef struct __jmp_buf jmp_buf[1];
+
+#endif				/* _KLIBC_ARCHSETJMP_H */
diff --git a/usr/include/arch/mips64/machine/asm.h b/usr/include/arch/mips64/machine/asm.h
new file mode 100644
index 0000000..42dcaa4
--- /dev/null
+++ b/usr/include/arch/mips64/machine/asm.h
@@ -0,0 +1,82 @@
+/*
+ * arch/mips64/include/machine/asm.h
+ */
+
+#ifndef _MACHINE_ASM_H
+#define _MACHINE_ASM_H
+
+/*
+ * Symbolic register names for 64 bit ABI
+ */
+
+
+#define zero    $0      /* wired zero */
+#define AT      $at     /* assembler temp - uppercase because of ".set at" */
+#define v0      $2      /* return value - caller saved */
+#define v1      $3
+#define a0      $4      /* argument registers */
+#define a1      $5
+#define a2      $6
+#define a3      $7
+#define a4      $8      /* arg reg 64 bit; caller saved in 32 bit */
+#define ta0     $8
+#define a5      $9
+#define ta1     $9
+#define a6      $10
+#define ta2     $10
+#define a7      $11
+#define ta3     $11
+#define t4      $12     /* caller saved */
+#define t5      $13
+#define t6      $14
+#define t7      $15
+#define s0      $16     /* callee saved */
+#define s1      $17
+#define s2      $18
+#define s3      $19
+#define s4      $20
+#define s5      $21
+#define s6      $22
+#define s7      $23
+#define t8      $24     /* caller saved */
+#define t9      $25     /* callee address for PIC/temp */
+#define jp      $25     /* PIC jump register */
+#define k0      $26     /* kernel temporary */
+#define k1      $27
+#define gp      $28     /* global pointer - caller saved for PIC */
+#define sp      $29     /* stack pointer */
+#define fp      $30     /* frame pointer */
+#define s8      $30     /* callee saved */
+#define ra      $31     /* return address */
+
+
+/*
+ * LEAF - declare leaf routine
+ */
+#define LEAF(symbol)                                    \
+		.globl  symbol;                         \
+		.align  2;                              \
+		.type   symbol,@function;               \
+		.ent    symbol,0;                       \
+symbol:		.frame  sp,0,ra
+
+
+/*
+ * NESTED - declare nested routine entry point
+ */
+#define NESTED(symbol, framesize, rpc)                  \
+		.globl  symbol;                         \
+		.align  2;                              \
+		.type   symbol,@function;               \
+		.ent    symbol,0;                       \
+symbol:		.frame  sp, framesize, rpc
+
+/*
+ * END - mark end of function
+ */
+#define END(function)                                   \
+		.end    function;                       \
+		.size   function,.-function
+
+
+#endif				/* _MACHINE_ASM_H */
diff --git a/usr/include/fcntl.h b/usr/include/fcntl.h
index bbd6917..16128f8 100644
--- a/usr/include/fcntl.h
+++ b/usr/include/fcntl.h
@@ -9,7 +9,7 @@
 #include <klibc/compiler.h>
 #include <klibc/seek.h>
 #include <sys/types.h>
-#if defined(__mips__) && !defined(__mips64__)
+#if defined(__mips__) && ! defined(__mips64)
 # include <klibc/archfcntl.h>
 #endif
 #include <linux/fcntl.h>
-- 
2.4.5