author | Florian Westphal <fw@strlen.de> |
Sun, 11 Jan 2009 20:20:11 +0100 | |
changeset 0 | aa628870c1d3 |
permissions | -rw-r--r-- |
0
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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1 |
#ifndef _ASM_X86_USER_64_H |
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Port of Linux 2.6.28 for use with network simulation cradle.
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#define _ASM_X86_USER_64_H |
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Port of Linux 2.6.28 for use with network simulation cradle.
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|
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Port of Linux 2.6.28 for use with network simulation cradle.
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#include <asm/types.h> |
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Port of Linux 2.6.28 for use with network simulation cradle.
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#include <asm/page.h> |
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Port of Linux 2.6.28 for use with network simulation cradle.
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/* Core file format: The core file is written in such a way that gdb |
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Port of Linux 2.6.28 for use with network simulation cradle.
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can understand it and provide useful information to the user. |
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Port of Linux 2.6.28 for use with network simulation cradle.
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8 |
There are quite a number of obstacles to being able to view the |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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contents of the floating point registers, and until these are |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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solved you will not be able to view the contents of them. |
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Port of Linux 2.6.28 for use with network simulation cradle.
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Actually, you can read in the core file and look at the contents of |
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Port of Linux 2.6.28 for use with network simulation cradle.
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the user struct to find out what the floating point registers |
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Port of Linux 2.6.28 for use with network simulation cradle.
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contain. |
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Port of Linux 2.6.28 for use with network simulation cradle.
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|
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Port of Linux 2.6.28 for use with network simulation cradle.
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The actual file contents are as follows: |
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Port of Linux 2.6.28 for use with network simulation cradle.
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UPAGE: 1 page consisting of a user struct that tells gdb what is present |
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Port of Linux 2.6.28 for use with network simulation cradle.
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in the file. Directly after this is a copy of the task_struct, which |
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Port of Linux 2.6.28 for use with network simulation cradle.
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is currently not used by gdb, but it may come in useful at some point. |
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Port of Linux 2.6.28 for use with network simulation cradle.
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All of the registers are stored as part of the upage. The upage should |
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Port of Linux 2.6.28 for use with network simulation cradle.
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always be only one page. |
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Port of Linux 2.6.28 for use with network simulation cradle.
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DATA: The data area is stored. We use current->end_text to |
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Port of Linux 2.6.28 for use with network simulation cradle.
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current->brk to pick up all of the user variables, plus any memory |
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Port of Linux 2.6.28 for use with network simulation cradle.
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that may have been malloced. No attempt is made to determine if a page |
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is demand-zero or if a page is totally unused, we just cover the entire |
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range. All of the addresses are rounded in such a way that an integral |
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Port of Linux 2.6.28 for use with network simulation cradle.
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number of pages is written. |
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Port of Linux 2.6.28 for use with network simulation cradle.
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STACK: We need the stack information in order to get a meaningful |
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backtrace. We need to write the data from (esp) to |
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current->start_stack, so we round each of these off in order to be able |
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to write an integer number of pages. |
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The minimum core file size is 3 pages, or 12288 bytes. */ |
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|
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/* |
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* Pentium III FXSR, SSE support |
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* Gareth Hughes <gareth@valinux.com>, May 2000 |
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* |
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* Provide support for the GDB 5.0+ PTRACE_{GET|SET}FPXREGS requests for |
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* interacting with the FXSR-format floating point environment. Floating |
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* point data can be accessed in the regular format in the usual manner, |
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* and both the standard and SIMD floating point data can be accessed via |
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* the new ptrace requests. In either case, changes to the FPU environment |
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* will be reflected in the task's state as expected. |
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* |
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* x86-64 support by Andi Kleen. |
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*/ |
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|
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/* This matches the 64bit FXSAVE format as defined by AMD. It is the same |
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as the 32bit format defined by Intel, except that the selector:offset pairs |
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Port of Linux 2.6.28 for use with network simulation cradle.
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for data and eip are replaced with flat 64bit pointers. */ |
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struct user_i387_struct { |
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unsigned short cwd; |
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unsigned short swd; |
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unsigned short twd; /* Note this is not the same as |
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the 32bit/x87/FSAVE twd */ |
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unsigned short fop; |
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Port of Linux 2.6.28 for use with network simulation cradle.
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__u64 rip; |
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__u64 rdp; |
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__u32 mxcsr; |
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__u32 mxcsr_mask; |
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__u32 st_space[32]; /* 8*16 bytes for each FP-reg = 128 bytes */ |
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__u32 xmm_space[64]; /* 16*16 bytes for each XMM-reg = 256 bytes */ |
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__u32 padding[24]; |
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}; |
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|
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/* |
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* Segment register layout in coredumps. |
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*/ |
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struct user_regs_struct { |
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unsigned long r15; |
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unsigned long r14; |
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unsigned long r13; |
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unsigned long r12; |
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unsigned long bp; |
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unsigned long bx; |
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unsigned long r11; |
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unsigned long r10; |
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unsigned long r9; |
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unsigned long r8; |
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unsigned long ax; |
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unsigned long cx; |
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unsigned long dx; |
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unsigned long si; |
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unsigned long di; |
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unsigned long orig_ax; |
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unsigned long ip; |
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unsigned long cs; |
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unsigned long flags; |
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unsigned long sp; |
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unsigned long ss; |
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unsigned long fs_base; |
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unsigned long gs_base; |
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unsigned long ds; |
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unsigned long es; |
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unsigned long fs; |
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unsigned long gs; |
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}; |
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|
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/* When the kernel dumps core, it starts by dumping the user struct - |
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this will be used by gdb to figure out where the data and stack segments |
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are within the file, and what virtual addresses to use. */ |
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|
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struct user { |
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/* We start with the registers, to mimic the way that "memory" is returned |
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from the ptrace(3,...) function. */ |
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struct user_regs_struct regs; /* Where the registers are actually stored */ |
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/* ptrace does not yet supply these. Someday.... */ |
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int u_fpvalid; /* True if math co-processor being used. */ |
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/* for this mess. Not yet used. */ |
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int pad0; |
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struct user_i387_struct i387; /* Math Co-processor registers. */ |
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/* The rest of this junk is to help gdb figure out what goes where */ |
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112 |
unsigned long int u_tsize; /* Text segment size (pages). */ |
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Port of Linux 2.6.28 for use with network simulation cradle.
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113 |
unsigned long int u_dsize; /* Data segment size (pages). */ |
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Port of Linux 2.6.28 for use with network simulation cradle.
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unsigned long int u_ssize; /* Stack segment size (pages). */ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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115 |
unsigned long start_code; /* Starting virtual address of text. */ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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116 |
unsigned long start_stack; /* Starting virtual address of stack area. |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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117 |
This is actually the bottom of the stack, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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118 |
the top of the stack is always found in the |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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119 |
esp register. */ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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120 |
long int signal; /* Signal that caused the core dump. */ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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121 |
int reserved; /* No longer used */ |
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Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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122 |
int pad1; |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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123 |
unsigned long u_ar0; /* Used by gdb to help find the values for */ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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124 |
/* the registers. */ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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125 |
struct user_i387_struct *u_fpstate; /* Math Co-processor pointer. */ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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126 |
unsigned long magic; /* To uniquely identify a core file */ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
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127 |
char u_comm[32]; /* User command that was responsible */ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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unsigned long u_debugreg[8]; |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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unsigned long error_code; /* CPU error code or 0 */ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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130 |
unsigned long fault_address; /* CR3 or 0 */ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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131 |
}; |
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Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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#define NBPG PAGE_SIZE |
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Port of Linux 2.6.28 for use with network simulation cradle.
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#define UPAGES 1 |
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Port of Linux 2.6.28 for use with network simulation cradle.
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134 |
#define HOST_TEXT_START_ADDR (u.start_code) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
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#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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136 |
|
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Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
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137 |
#endif /* _ASM_X86_USER_64_H */ |