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[/] [openrisc/] [trunk/] [gnu-src/] [binutils-2.20.1/] [gas/] [testsuite/] [gas/] [cfi/] [cfi-i386.s] - Rev 277
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.text #; func_locvars #; - function with a space on the stack #; allocated for local variables .type func_locvars,@function func_locvars: .cfi_startproc #; alocate space for local vars sub $0x1234,%esp .cfi_adjust_cfa_offset 0x1234 #; dummy body movl $1,%eax #; release space of local vars and return add $0x1234,%esp .cfi_adjust_cfa_offset -0x1234 ret .cfi_endproc #; func_prologue #; - functions that begins with standard #; prologue: "pushq %rbp; movq %rsp,%rbp" .type func_prologue,@function func_prologue: .cfi_startproc #; prologue, CFI is valid after #; each instruction. pushl %ebp .cfi_def_cfa_offset 8 .cfi_offset ebp,-8 movl %esp, %ebp .cfi_def_cfa_register ebp #; function body call func_locvars addl $3, %eax #; epilogue with valid CFI #; (we're better than gcc :-) leave .cfi_def_cfa_register esp ret .cfi_endproc #; func_otherreg #; - function that moves frame pointer to #; another register (ebx) and then allocates #; a space for local variables .type func_otherreg,@function func_otherreg: .cfi_startproc #; save frame pointer to ebx mov %esp,%ebx .cfi_def_cfa_register ebx #; alocate space for local vars #; (no .cfi_{def,adjust}_cfa_offset here, #; because CFA is computed from ebx!) sub $100,%esp #; function body call func_prologue add $2, %eax #; restore frame pointer from ebx mov %ebx,%esp .cfi_def_cfa esp,4 ret .cfi_endproc #; main #; - typical function .type main,@function main: .cfi_startproc #; only function body that doesn't #; touch the stack at all. call func_otherreg #; return ret .cfi_endproc #; _start #; - standard entry point .type _start,@function .globl _start _start: .cfi_startproc call main movl %eax,%edi movl $0x1,%eax int $0x80 hlt .cfi_endproc #; func_all_registers #; - test for all .cfi register numbers. #; This function is never called and the CFI info doesn't make sense. .type func_all_registers,@function func_all_registers: .cfi_startproc simple .cfi_undefined eip ; nop .cfi_undefined eax ; nop .cfi_undefined ecx ; nop .cfi_undefined edx ; nop .cfi_undefined ebx ; nop .cfi_undefined esp ; nop .cfi_undefined ebp ; nop .cfi_undefined esi ; nop .cfi_undefined edi ; nop .cfi_undefined eflags ; nop .cfi_undefined es ; nop .cfi_undefined cs ; nop .cfi_undefined ds ; nop .cfi_undefined ss ; nop .cfi_undefined fs ; nop .cfi_undefined gs ; nop .cfi_undefined tr ; nop .cfi_undefined ldtr ; nop .cfi_undefined mxcsr ; nop .cfi_undefined xmm0 ; nop .cfi_undefined xmm1 ; nop .cfi_undefined xmm2 ; nop .cfi_undefined xmm3 ; nop .cfi_undefined xmm4 ; nop .cfi_undefined xmm5 ; nop .cfi_undefined xmm6 ; nop .cfi_undefined xmm7 ; nop .cfi_undefined fcw ; nop .cfi_undefined fsw ; nop .cfi_undefined st ; nop .cfi_undefined st(1) ; nop .cfi_undefined st(2) ; nop .cfi_undefined st(3) ; nop .cfi_undefined st(4) ; nop .cfi_undefined st(5) ; nop .cfi_undefined st(6) ; nop .cfi_undefined st(7) ; nop .cfi_undefined mm0 ; nop .cfi_undefined mm1 ; nop .cfi_undefined mm2 ; nop .cfi_undefined mm3 ; nop .cfi_undefined mm4 ; nop .cfi_undefined mm5 ; nop .cfi_undefined mm6 ; nop .cfi_undefined mm7 ; nop .cfi_endproc
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