1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_X86_USER32_H 3 #define _ASM_X86_USER32_H 4 5 /* IA32 compatible user structures for ptrace. 6 * These should be used for 32bit coredumps too. */ 7 8 struct user_i387_ia32_struct { 9 u32 cwd; 10 u32 swd; 11 u32 twd; 12 u32 fip; 13 u32 fcs; 14 u32 foo; 15 u32 fos; 16 u32 st_space[20]; /* 8*10 bytes for each FP-reg = 80 bytes */ 17 }; 18 19 /* FSAVE frame with extensions */ 20 struct user32_fxsr_struct { 21 unsigned short cwd; 22 unsigned short swd; 23 unsigned short twd; /* not compatible to 64bit twd */ 24 unsigned short fop; 25 int fip; 26 int fcs; 27 int foo; 28 int fos; 29 int mxcsr; 30 int reserved; 31 int st_space[32]; /* 8*16 bytes for each FP-reg = 128 bytes */ 32 int xmm_space[32]; /* 8*16 bytes for each XMM-reg = 128 bytes */ 33 int padding[56]; 34 }; 35 36 struct user_regs_struct32 { 37 __u32 ebx, ecx, edx, esi, edi, ebp, eax; 38 unsigned short ds, __ds, es, __es; 39 unsigned short fs, __fs, gs, __gs; 40 __u32 orig_eax, eip; 41 unsigned short cs, __cs; 42 __u32 eflags, esp; 43 unsigned short ss, __ss; 44 }; 45 46 struct user32 { 47 struct user_regs_struct32 regs; /* Where the registers are actually stored */ 48 int u_fpvalid; /* True if math co-processor being used. */ 49 /* for this mess. Not yet used. */ 50 struct user_i387_ia32_struct i387; /* Math Co-processor registers. */ 51 /* The rest of this junk is to help gdb figure out what goes where */ 52 __u32 u_tsize; /* Text segment size (pages). */ 53 __u32 u_dsize; /* Data segment size (pages). */ 54 __u32 u_ssize; /* Stack segment size (pages). */ 55 __u32 start_code; /* Starting virtual address of text. */ 56 __u32 start_stack; /* Starting virtual address of stack area. 57 This is actually the bottom of the stack, 58 the top of the stack is always found in the 59 esp register. */ 60 __u32 signal; /* Signal that caused the core dump. */ 61 int reserved; /* No __u32er used */ 62 __u32 u_ar0; /* Used by gdb to help find the values for */ 63 /* the registers. */ 64 __u32 u_fpstate; /* Math Co-processor pointer. */ 65 __u32 magic; /* To uniquely identify a core file */ 66 char u_comm[32]; /* User command that was responsible */ 67 int u_debugreg[8]; 68 }; 69 70 71 #endif /* _ASM_X86_USER32_H */ 72