diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h | 282 |
1 files changed, 21 insertions, 261 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h b/nptl/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h index 8142455781..147f5c8470 100644 --- a/nptl/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h +++ b/nptl/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Jakub Jelinek <jakub@redhat.com>, 2002. @@ -29,7 +29,6 @@ # define PSEUDO(name, syscall_name, args) \ .text; \ ENTRY (name) \ - L(name##START): \ cmpl $0, %gs:MULTIPLE_THREADS_OFFSET; \ jne L(pseudo_cancel); \ .type __##syscall_name##_nocancel,@function; \ @@ -51,258 +50,11 @@ POPSTATE_##args \ cmpl $-4095, %eax; \ jae SYSCALL_ERROR_LABEL; \ - L(pseudo_end): \ - \ - /* Create unwinding information for the syscall wrapper. */ \ - .section .eh_frame,"a",@progbits; \ - L(STARTFRAME): \ - /* Length of the CIE. */ \ - .long L(ENDCIE)-L(STARTCIE); \ - L(STARTCIE): \ - /* CIE ID. */ \ - .long 0; \ - /* Version number. */ \ - .byte 1; \ - /* NUL-terminated augmentation string. */ \ - AUGMENTATION_STRING; \ - /* Code alignment factor. */ \ - .uleb128 1; \ - /* Data alignment factor. */ \ - .sleb128 -4; \ - /* Return address register column. */ \ - .byte 8; \ - /* Optional augmentation parameter. */ \ - AUGMENTATION_PARAM \ - /* Start of the table initialization. */ \ - .byte 0xc; /* DW_CFA_def_cfa */ \ - .uleb128 4; \ - .uleb128 4; \ - .byte 0x88; /* DW_CFA_offset, column 0x8 */ \ - .uleb128 1; \ - .align 4; \ - L(ENDCIE): \ - /* Length of the FDE. */ \ - .long L(ENDFDE)-L(STARTFDE); \ - L(STARTFDE): \ - /* CIE pointer. */ \ - .long L(STARTFDE)-L(STARTFRAME); \ - /* Start address of the code. */ \ - START_SYMBOL_REF (name); \ - /* Length of the code. */ \ - .long L(name##END)-L(name##START); \ - /* Augmentation data. */ \ - AUGMENTATION_PARAM_FDE \ - /* The rest of the code depends on the number of parameters the syscall \ - takes. */ \ - EH_FRAME_##args(name); \ - .align 4; \ - L(ENDFDE): \ - .previous - -# ifdef SHARED -/* NUL-terminated augmentation string. Note "z" means there is an - augmentation value later on. */ -# define AUGMENTATION_STRING .string "zR" -# define AUGMENTATION_PARAM \ - /* Augmentation value length. */ \ - .uleb128 1; \ - /* Encoding: DW_EH_PE_pcrel + DW_EH_PE_sdata4. */ \ - .byte 0x1b; -# define AUGMENTATION_PARAM_FDE \ - /* No augmentation data. */ \ - .uleb128 0; -# define START_SYMBOL_REF(name) \ - /* PC-relative start address of the code. */ \ - .long L(name##START)-. -# else -/* No augmentation. */ -# define AUGMENTATION_STRING .ascii "\0" -# define AUGMENTATION_PARAM /* nothing */ -# define AUGMENTATION_PARAM_FDE /* nothing */ -# define START_SYMBOL_REF(name) \ - /* Absolute start address of the code. */ \ - .long L(name##START) -# endif - -/* Callframe description for syscalls without parameters. This is very - simple. The only place the stack pointer is changed is when the old - cancellation state value is saved. */ -# define EH_FRAME_0(name) \ - .byte 0x40+L(PUSHSTATE)-L(name##START); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 8; \ - .byte 0x40+L(POPSTATE)-L(PUSHSTATE); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 4 - -/* For syscalls with one and two parameters the code is the same as for - those which take no parameter. */ -# define EH_FRAME_1(name) \ - .byte 0x40+L(SAVEBX1)-L(name##START); /* DW_CFA_advance_loc+N */ \ - .byte 9; /* DW_CFA_register */ \ - .uleb128 3; /* %ebx */ \ - .uleb128 2; /* %edx */ \ - .byte 0x40+L(RESTBX1)-L(SAVEBX1); /* DW_CFA_advance_loc+N */ \ - .byte 0xc3; /* DW_CFA_restore %ebx */ \ - .byte 0x40+L(PUSHSTATE)-L(RESTBX1); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 8; \ - .byte 0x40+L(SAVEBX2)-L(PUSHSTATE); /* DW_CFA_advance_loc+N */ \ - .byte 9; /* DW_CFA_register */ \ - .uleb128 3; /* %ebx */ \ - .uleb128 2; /* %edx */ \ - .byte 0x40+L(RESTBX2)-L(SAVEBX2); /* DW_CFA_advance_loc+N */ \ - .byte 0xc3; /* DW_CFA_restore %ebx */ \ - .byte 0x40+L(POPSTATE)-L(RESTBX2); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 4 - -# define EH_FRAME_2(name) EH_FRAME_1 (name) - -/* For syscalls with three parameters the stack pointer is changed - also to save the content of the %ebx register. */ -# define EH_FRAME_3(name) \ - .byte 0x40+L(PUSHBX1)-L(name##START); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 8; \ - .byte 0x83; /* DW_CFA_offset %ebx */ \ - .uleb128 2; \ - .byte 0x40+L(POPBX1)-L(PUSHBX1); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 4; \ - .byte 0xc3; /* DW_CFA_restore %ebx */ \ - .byte 0x40+L(PUSHSTATE)-L(POPBX1); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 8; \ - .byte 0x40+L(PUSHBX2)-L(PUSHSTATE); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 12; \ - .byte 0x83; /* DW_CFA_offset %ebx */ \ - .uleb128 3; \ - .byte 0x40+L(POPBX2)-L(PUSHBX2); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 8; \ - .byte 0xc3; /* DW_CFA_restore %ebx */ \ - .byte 0x40+L(POPSTATE)-L(POPBX2); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 4 - -/* With four parameters the syscall wrappers have to save %ebx and %esi. */ -# define EH_FRAME_4(name) \ - .byte 0x40+L(PUSHSI1)-L(name##START); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 8; \ - .byte 0x86; /* DW_CFA_offset %esi */ \ - .uleb128 2; \ - .byte 0x40+L(PUSHBX1)-L(PUSHSI1); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 12; \ - .byte 0x83; /* DW_CFA_offset %ebx */ \ - .uleb128 3; \ - .byte 0x40+L(POPBX1)-L(PUSHBX1); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 8; \ - .byte 0xc3; /* DW_CFA_restore %ebx */ \ - .byte 0x40+L(POPSI1)-L(POPBX1); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 4; \ - .byte 0xc6; /* DW_CFA_restore %esi */ \ - .byte 0x40+L(PUSHSTATE)-L(POPSI1); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 8; \ - .byte 0x40+L(PUSHSI2)-L(PUSHSTATE); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 12; \ - .byte 0x86; /* DW_CFA_offset %esi */ \ - .uleb128 3; \ - .byte 0x40+L(PUSHBX2)-L(PUSHSI2); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 16; \ - .byte 0x83; /* DW_CFA_offset %ebx */ \ - .uleb128 4; \ - .byte 0x40+L(POPBX2)-L(PUSHBX2); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 12; \ - .byte 0xc3; /* DW_CFA_restore %ebx */ \ - .byte 0x40+L(POPSI2)-L(POPBX2); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 8; \ - .byte 0xc6; /* DW_CFA_restore %esi */ \ - .byte 0x40+L(POPSTATE)-L(POPSI2); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 4 - -/* With five parameters the syscall wrappers have to save %ebx, %esi, - and %edi. */ -# define EH_FRAME_5(name) \ - .byte 0x40+L(PUSHDI1)-L(name##START); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 8; \ - .byte 0x87; /* DW_CFA_offset %edi */ \ - .uleb128 2; \ - .byte 0x40+L(PUSHSI1)-L(PUSHDI1); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 12; \ - .byte 0x86; /* DW_CFA_offset %esi */ \ - .uleb128 3; \ - .byte 0x40+L(PUSHBX1)-L(PUSHSI1); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 16; \ - .byte 0x83; /* DW_CFA_offset %ebx */ \ - .uleb128 4; \ - .byte 0x40+L(POPBX1)-L(PUSHBX1); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 12; \ - .byte 0xc3; /* DW_CFA_restore %ebx */ \ - .byte 0x40+L(POPSI1)-L(POPBX1); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 8; \ - .byte 0xc6; /* DW_CFA_restore %esi */ \ - .byte 0x40+L(POPDI1)-L(POPSI1); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 4; \ - .byte 0xc7; /* DW_CFA_restore %edi */ \ - .byte 0x40+L(PUSHSTATE)-L(POPDI1); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 8; \ - .byte 0x40+L(PUSHDI2)-L(PUSHSTATE); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 12; \ - .byte 0x87; /* DW_CFA_offset %edi */ \ - .uleb128 3; \ - .byte 0x40+L(PUSHSI2)-L(PUSHDI2); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 16; \ - .byte 0x86; /* DW_CFA_offset %esi */ \ - .uleb128 4; \ - .byte 0x40+L(PUSHBX2)-L(PUSHSI2); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 20; \ - .byte 0x83; /* DW_CFA_offset %ebx */ \ - .uleb128 5; \ - .byte 0x40+L(POPBX2)-L(PUSHBX2); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 16; \ - .byte 0xc3; /* DW_CFA_restore %ebx */ \ - .byte 0x40+L(POPSI2)-L(POPBX2); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 12; \ - .byte 0xc6; /* DW_CFA_restore %esi */ \ - .byte 0x40+L(POPDI2)-L(POPSI2); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 8; \ - .byte 0xc7; /* DW_CFA_restore %edi */ \ - .byte 0x40+L(POPSTATE)-L(POPDI2); /* DW_CFA_advance_loc+N */ \ - .byte 14; /* DW_CFA_def_cfa_offset */ \ - .uleb128 4 - - -# undef ASM_SIZE_DIRECTIVE -# define ASM_SIZE_DIRECTIVE(name) L(name##END): .size name,.-name; + L(pseudo_end): # define SAVE_OLDTYPE_0 movl %eax, %ecx; # define SAVE_OLDTYPE_1 SAVE_OLDTYPE_0 -# define SAVE_OLDTYPE_2 pushl %eax; L(PUSHSTATE): +# define SAVE_OLDTYPE_2 pushl %eax; cfi_adjust_cfa_offset (4); # define SAVE_OLDTYPE_3 SAVE_OLDTYPE_2 # define SAVE_OLDTYPE_4 SAVE_OLDTYPE_2 # define SAVE_OLDTYPE_5 SAVE_OLDTYPE_2 @@ -313,11 +65,13 @@ # define _PUSHCARGS_0 /* No arguments to push. */ # define _POPCARGS_0 /* No arguments to pop. */ -# define PUSHCARGS_1 movl %ebx, %edx; L(SAVEBX2): PUSHCARGS_0 +# define PUSHCARGS_1 movl %ebx, %edx; cfi_register (ebx, edx); PUSHCARGS_0 # define DOCARGS_1 _DOARGS_1 (4) -# define POPCARGS_1 POPCARGS_0; movl %edx, %ebx; L(RESTBX2): -# define _PUSHCARGS_1 pushl %ebx; L(PUSHBX2): _PUSHCARGS_0 -# define _POPCARGS_1 _POPCARGS_0; popl %ebx; L(POPBX2): +# define POPCARGS_1 POPCARGS_0; movl %edx, %ebx; cfi_restore (ebx); +# define _PUSHCARGS_1 pushl %ebx; cfi_adjust_cfa_offset (4); \ + cfi_rel_offset (ebx, 0); _PUSHCARGS_0 +# define _POPCARGS_1 _POPCARGS_0; popl %ebx; \ + cfi_adjust_cfa_offset (-4); cfi_restore (ebx); # define PUSHCARGS_2 PUSHCARGS_1 # define DOCARGS_2 _DOARGS_2 (12) @@ -334,14 +88,18 @@ # define PUSHCARGS_4 _PUSHCARGS_4 # define DOCARGS_4 _DOARGS_4 (28) # define POPCARGS_4 _POPCARGS_4 -# define _PUSHCARGS_4 pushl %esi; L(PUSHSI2): _PUSHCARGS_3 -# define _POPCARGS_4 _POPCARGS_3; popl %esi; L(POPSI2): +# define _PUSHCARGS_4 pushl %esi; cfi_adjust_cfa_offset (4); \ + cfi_rel_offset (esi, 0); _PUSHCARGS_3 +# define _POPCARGS_4 _POPCARGS_3; popl %esi; \ + cfi_adjust_cfa_offset (-4); cfi_restore (esi); # define PUSHCARGS_5 _PUSHCARGS_5 # define DOCARGS_5 _DOARGS_5 (36) # define POPCARGS_5 _POPCARGS_5 -# define _PUSHCARGS_5 pushl %edi; L(PUSHDI2): _PUSHCARGS_4 -# define _POPCARGS_5 _POPCARGS_4; popl %edi; L(POPDI2): +# define _PUSHCARGS_5 pushl %edi; cfi_adjust_cfa_offset (4); \ + cfi_rel_offset (edi, 0); _PUSHCARGS_4 +# define _POPCARGS_5 _POPCARGS_4; popl %edi; \ + cfi_adjust_cfa_offset (-4); cfi_restore (edi); # ifdef IS_IN_libpthread # define CENABLE call __pthread_enable_asynccancel; @@ -356,9 +114,11 @@ # error Unsupported library # endif # define POPSTATE_0 \ - pushl %eax; L(PUSHSTATE): movl %ecx, %eax; CDISABLE; popl %eax; L(POPSTATE): + pushl %eax; cfi_adjust_cfa_offset (4); movl %ecx, %eax; \ + CDISABLE; popl %eax; cfi_adjust_cfa_offset (-4); # define POPSTATE_1 POPSTATE_0 -# define POPSTATE_2 xchgl (%esp), %eax; CDISABLE; popl %eax; L(POPSTATE): +# define POPSTATE_2 xchgl (%esp), %eax; CDISABLE; popl %eax; \ + cfi_adjust_cfa_offset (-4); # define POPSTATE_3 POPSTATE_2 # define POPSTATE_4 POPSTATE_3 # define POPSTATE_5 POPSTATE_4 |