glibc-2.3.2-mips-user.patch

linux下编译交叉工具链的工具源码

--- libc/sysdeps/unix/sysv/linux/mips/sys/user.h 8 Feb 2002 16:21:00 -0000 1.1
+++ libc/sysdeps/unix/sysv/linux/mips/sys/user.h 12 Apr 2003 09:13:13 -0000
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -23,7 +23,154 @@
    too much into it.  Don't use it for anything other than GDB unless
    you know what you are doing.  */
 
-#include <asm/reg.h>
+/* #include <asm/reg.h> */
+/* Instead of including the kernel header, that will vary depending on
+   whether the 32- or the 64-bit kernel is installed, we paste its
+   contents here.  Note that the fact that the file is inline here,
+   instead of included separately, doesn't change in any way the
+   licensing status of a program that includes user.h.  Since this is
+   for gdb alone, and gdb is GPLed, no surprises here.  */
+#if _MIPS_SIM == _MIPS_SIM_ABI32
+/*
+ * Various register offset definitions for debuggers, core file
+ * examiners and whatnot.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1995, 1999 by Ralf Baechle
+ */
+#ifndef __ASM_MIPS_REG_H
+#define __ASM_MIPS_REG_H
+
+/*
+ * This defines/structures correspond to the register layout on stack -
+ * if the order here is changed, it needs to be updated in
+ * include/asm-mips/stackframe.h
+ */
+#define EF_REG0			6
+#define EF_REG1			7
+#define EF_REG2			8
+#define EF_REG3			9
+#define EF_REG4			10
+#define EF_REG5			11
+#define EF_REG6			12
+#define EF_REG7			13
+#define EF_REG8			14
+#define EF_REG9			15
+#define EF_REG10		16
+#define EF_REG11		17
+#define EF_REG12		18
+#define EF_REG13		19
+#define EF_REG14		20
+#define EF_REG15		21
+#define EF_REG16		22
+#define EF_REG17		23
+#define EF_REG18		24
+#define EF_REG19		25
+#define EF_REG20		26
+#define EF_REG21		27
+#define EF_REG22		28
+#define EF_REG23		29
+#define EF_REG24		30
+#define EF_REG25		31
+/*
+ * k0/k1 unsaved
+ */
+#define EF_REG28		34
+#define EF_REG29		35
+#define EF_REG30		36
+#define EF_REG31		37
+
+/*
+ * Saved special registers
+ */
+#define EF_LO			38
+#define EF_HI			39
+
+#define EF_CP0_EPC		40
+#define EF_CP0_BADVADDR		41
+#define EF_CP0_STATUS		42
+#define EF_CP0_CAUSE		43
+
+#define EF_SIZE			180	/* size in bytes */
+
+#endif /* __ASM_MIPS_REG_H */
+
+#else /* _MIPS_SIM != _MIPS_SIM_ABI32 */
+
+/*
+ * Various register offset definitions for debuggers, core file
+ * examiners and whatnot.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1995, 1999 Ralf Baechle
+ * Copyright (C) 1995, 1999 Silicon Graphics
+ */
+#ifndef _ASM_REG_H
+#define _ASM_REG_H
+
+/*
+ * This defines/structures correspond to the register layout on stack -
+ * if the order here is changed, it needs to be updated in
+ * include/asm-mips/stackframe.h
+ */
+#define EF_REG0			 0
+#define EF_REG1			 1
+#define EF_REG2			 2
+#define EF_REG3			 3
+#define EF_REG4			 4
+#define EF_REG5			 5
+#define EF_REG6			 6
+#define EF_REG7			 7
+#define EF_REG8			 8
+#define EF_REG9			 9
+#define EF_REG10		10
+#define EF_REG11		11
+#define EF_REG12		12
+#define EF_REG13		13
+#define EF_REG14		14
+#define EF_REG15		15
+#define EF_REG16		16
+#define EF_REG17		17
+#define EF_REG18		18
+#define EF_REG19		19
+#define EF_REG20		20
+#define EF_REG21		21
+#define EF_REG22		22
+#define EF_REG23		23
+#define EF_REG24		24
+#define EF_REG25		25
+/*
+ * k0/k1 unsaved
+ */
+#define EF_REG28		28
+#define EF_REG29		29
+#define EF_REG30		30
+#define EF_REG31		31
+
+/*
+ * Saved special registers
+ */
+#define EF_LO			32
+#define EF_HI			33
+
+#define EF_CP0_EPC		34
+#define EF_CP0_BADVADDR		35
+#define EF_CP0_STATUS		36
+#define EF_CP0_CAUSE		37
+
+#define EF_SIZE			304	/* size in bytes */
+
+#endif /* _ASM_REG_H */
+
+#endif /* _MIPS_SIM != _MIPS_SIM_ABI32 */
+
+#if _MIPS_SIM == _MIPS_SIM_ABI32
 
 struct user
 {
@@ -39,6 +186,24 @@ struct user
   unsigned long	magic;			/* identifies a core file */
   char		u_comm[32];		/* user command name */
 };
+
+#else
+
+struct user {
+  __extension__ unsigned long	regs[EF_SIZE/8+64]; /* integer and fp regs */
+  __extension__ unsigned long	u_tsize;	/* text size (pages) */
+  __extension__ unsigned long	u_dsize;	/* data size (pages) */
+  __extension__ unsigned long	u_ssize;	/* stack size (pages) */
+  __extension__ unsigned long long start_code;	/* text starting address */
+  __extension__ unsigned long long start_data;	/* data starting address */
+  __extension__ unsigned long long start_stack;	/* stack starting address */
+  __extension__ long long	signal;		/* signal causing core dump */
+  __extension__ unsigned long long u_ar0;	/* help gdb find registers */
+  __extension__ unsigned long long magic;	/* identifies a core file */
+  char		u_comm[32];		/* user command name */
+};
+
+#endif
 
 #define PAGE_SHIFT		12
 #define PAGE_SIZE		(1UL << PAGE_SHIFT)

--=-=-=


-- 
Alexandre Oliva   Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer                 aoliva@{redhat.com, gcc.gnu.org}
CS PhD student at IC-Unicamp        oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist                Professional serial bug killer

--=-=-=--

And the rediffed hunk:

--- glibc-2.3.2/sysdeps/unix/sysv/linux/mips/sys/ucontext.h.old	2004-05-30 07:23:32.000000000 -0700
+++ glibc-2.3.2/sysdeps/unix/sysv/linux/mips/sys/ucontext.h	2004-05-30 07:22:56.000000000 -0700
@@ -29,43 +29,72 @@
 #include <bits/sigcontext.h>
 
 
-/* Type for general register.  */
-typedef unsigned long int greg_t;
+/* Type for general register.  Even in o32 we assume 64-bit registers,
+   like the kernel.  */
+__extension__ typedef unsigned long long int greg_t;
 
 /* Number of general registers.  */
-#define NGREG	37
-#define NFPREG	33
+#define NGREG	32
+#define NFPREG	32
 
 /* Container for all general registers.  */
-/* gregset_t must be an array.  The below declared array corresponds to:
-typedef struct gregset {
-	greg_t	g_regs[32];
-	greg_t	g_hi;
-	greg_t	g_lo;
-	greg_t	g_pad[3];
-} gregset_t;  */
 typedef greg_t gregset_t[NGREG];
 
 /* Container for all FPU registers.  */
 typedef struct fpregset {
 	union {
-		double	fp_dregs[32];
+		double	fp_dregs[NFPREG];
 		struct {
 			float		_fp_fregs;
 			unsigned int	_fp_pad;
-		} fp_fregs[32];
+		} fp_fregs[NFPREG];
 	} fp_r;
-	unsigned int	fp_csr;
-	unsigned int	fp_pad;
 } fpregset_t;
 
 
 /* Context to describe whole processor state.  */
+#if _MIPS_SIM == _MIPS_SIM_ABI32
+/* Earlier versions of glibc for mips had an entirely different
+   definition of mcontext_t, that didn't even resemble the
+   corresponding kernel data structure.  Since all legitimate uses of
+   ucontext_t in glibc mustn't have accessed anything beyond
+   uc_mcontext and, even then, taking a pointer to it, casting it to
+   sigcontext_t, and accessing it as such, which is what it has always
+   been, this can still be rectified.  Fortunately, makecontext,
+   [gs]etcontext et all have never been implemented.  */
 typedef struct
   {
+    unsigned int regmask;
+    unsigned int status;
+    greg_t pc;
     gregset_t gregs;
     fpregset_t fpregs;
+    unsigned int fp_owned;
+    unsigned int fpc_csr;
+    unsigned int fpc_eir;
+    unsigned int used_math;
+    unsigned int ssflags;
+    greg_t mdhi;
+    greg_t mdlo;
+    unsigned int cause;
+    unsigned int badvaddr;
   } mcontext_t;
+#else
+typedef struct
+  {
+    gregset_t gregs;
+    fpregset_t fpregs;
+    greg_t mdhi;
+    greg_t mdlo;
+    greg_t pc;
+    unsigned int status;
+    unsigned int fpc_csr;
+    unsigned int fpc_eir;
+    unsigned int used_math;
+    unsigned int cause;
+    unsigned int badvaddr;
+  } mcontext_t;
+#endif
 
 /* Userlevel context.  */
 typedef struct ucontext