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Here's a patch for sysdep.h to add the unwind info. What do you think? Is this the right way to add the eh frame info to the syscalls? Andreas ============================================================ Index: sysdeps/unix/sysv/linux/x86_64/sysdep.h --- sysdeps/unix/sysv/linux/x86_64/sysdep.h 5 May 2003 08:45:16 -0000 1.17 +++ sysdeps/unix/sysv/linux/x86_64/sysdep.h 8 May 2003 07:37:57 -0000 @@ -77,26 +77,57 @@ #undef PSEUDO #define PSEUDO(name, syscall_name, args) \ .text; \ - ENTRY (name) \ - DO_CALL (syscall_name, args); \ + .LF25: ENTRY (name) \ + DO_CALL (syscall_name, args); \ cmpq $-4095, %rax; \ jae SYSCALL_ERROR_LABEL; \ + DWARF_INFO (name) \ L(pseudo_end): +#define DWARF_INFO(name) \ + .section .eh_frame,"a",@progbits; \ +.Lframe1: \ + .long .LECIE1-.LSCIE1; /* Length of Common Information Entry */ \ +.LSCIE1: \ + .long 0x0; /* CIE Identifier Tag */ \ + .byte 0x1; /* CIE Version */ \ + .ascii "zR\0"; /* CIE Augmentation */ \ + .uleb128 0x1; /* CIE Code Alignment Factor */ \ + .sleb128 -8; /* CIE Data Alignment Factor */ \ + .byte 0x10; /* CIE RA Column */ \ + .uleb128 0x1; /* Augmentation size */ \ + .byte 0x1b; /* FDE Encoding (pcrel sdata4) */ \ + .byte 0xc; /* DW_CFA_def_cfa */ \ + .uleb128 0x7; \ + .uleb128 0x8; \ + .byte 0x90; /* DW_CFA_offset, column 0x10 */ \ + .uleb128 0x1; \ + .align 8; \ +.LECIE1: \ +.LSFDE1: \ + .long .LEFDE1-.LASFDE1; /* FDE Length */ \ +.LASFDE1: \ + .long .LASFDE1-.Lframe1; /* FDE CIE offset */ \ + .long .LF25-.; /* FDE initial location */ \ + .long .LFE1-.LF25; /* FDE address range */ \ + .uleb128 0x0; /* Augmentation size */ \ + .align 8; \ +.LEFDE1: .text; + #undef PSEUDO_END #define PSEUDO_END(name) \ SYSCALL_ERROR_HANDLER \ - END (name) + .LFE1: END (name) \ #undef PSEUDO_NOERRNO #define PSEUDO_NOERRNO(name, syscall_name, args) \ .text; \ - ENTRY (name) \ + .LF25: ENTRY (name) \ DO_CALL (syscall_name, args) #undef PSEUDO_END_NOERRNO -#define PSEUDO_END_NOERRNO(name) \ - END (name) +#define PSEUDO_END_NOERRNO(name) \ + .LFE1: END (name) \ #define ret_NOERRNO ret -- Andreas Jaeger SuSE Labs aj@suse.de private aj@arthur.inka.de http://www.suse.de/~aj
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