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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

Line No.	Rev	Author	Line
1	205	julius	`.text`
2
3			`#; func_locvars`
4			`#; - function with a space on the stack`
5			`#; allocated for local variables`
6
7			`.type func_locvars,@function`
8			`func_locvars:`
9			`.cfi_startproc`
10
11			`#; alocate space for local vars`
12			`sub $0x1234,%esp`
13			`.cfi_adjust_cfa_offset 0x1234`
14
15			`#; dummy body`
16			`movl $1,%eax`
17
18			`#; release space of local vars and return`
19			`add $0x1234,%esp`
20			`.cfi_adjust_cfa_offset -0x1234`
21			`ret`
22			`.cfi_endproc`
23
24			`#; func_prologue`
25			`#; - functions that begins with standard`
26			`#; prologue: "pushq %rbp; movq %rsp,%rbp"`
27
28			`.type func_prologue,@function`
29			`func_prologue:`
30			`.cfi_startproc`
31
32			`#; prologue, CFI is valid after`
33			`#; each instruction.`
34			`pushl %ebp`
35			`.cfi_def_cfa_offset 8`
36			`.cfi_offset ebp,-8`
37			`movl %esp, %ebp`
38			`.cfi_def_cfa_register ebp`
39
40			`#; function body`
41			`call func_locvars`
42			`addl $3, %eax`
43
44			`#; epilogue with valid CFI`
45			`#; (we're better than gcc :-)`
46			`leave`
47			`.cfi_def_cfa_register esp`
48			`ret`
49			`.cfi_endproc`
50
51			`#; func_otherreg`
52			`#; - function that moves frame pointer to`
53			`#; another register (ebx) and then allocates`
54			`#; a space for local variables`
55
56			`.type func_otherreg,@function`
57			`func_otherreg:`
58			`.cfi_startproc`
59
60			`#; save frame pointer to ebx`
61			`mov %esp,%ebx`
62			`.cfi_def_cfa_register ebx`
63
64			`#; alocate space for local vars`
65			`#; (no .cfi_{def,adjust}_cfa_offset here,`
66			`#; because CFA is computed from ebx!)`
67			`sub $100,%esp`
68
69			`#; function body`
70			`call func_prologue`
71			`add $2, %eax`
72
73			`#; restore frame pointer from ebx`
74			`mov %ebx,%esp`
75			`.cfi_def_cfa esp,4`
76			`ret`
77			`.cfi_endproc`
78
79			`#; main`
80			`#; - typical function`
81			`.type main,@function`
82			`main:`
83			`.cfi_startproc`
84
85			`#; only function body that doesn't`
86			`#; touch the stack at all.`
87			`call func_otherreg`
88
89			`#; return`
90			`ret`
91			`.cfi_endproc`
92
93			`#; _start`
94			`#; - standard entry point`
95
96			`.type _start,@function`
97			`.globl _start`
98			`_start:`
99			`.cfi_startproc`
100			`call main`
101			`movl %eax,%edi`
102			`movl $0x1,%eax`
103			`int $0x80`
104			`hlt`
105			`.cfi_endproc`
106
107			`#; func_all_registers`
108			`#; - test for all .cfi register numbers.`
109			`#; This function is never called and the CFI info doesn't make sense.`
110
111			`.type func_all_registers,@function`
112			`func_all_registers:`
113			`.cfi_startproc simple`
114
115			`.cfi_undefined eip ; nop`
116			`.cfi_undefined eax ; nop`
117			`.cfi_undefined ecx ; nop`
118			`.cfi_undefined edx ; nop`
119			`.cfi_undefined ebx ; nop`
120			`.cfi_undefined esp ; nop`
121			`.cfi_undefined ebp ; nop`
122			`.cfi_undefined esi ; nop`
123			`.cfi_undefined edi ; nop`
124			`.cfi_undefined eflags ; nop`
125
126			`.cfi_undefined es ; nop`
127			`.cfi_undefined cs ; nop`
128			`.cfi_undefined ds ; nop`
129			`.cfi_undefined ss ; nop`
130			`.cfi_undefined fs ; nop`
131			`.cfi_undefined gs ; nop`
132			`.cfi_undefined tr ; nop`
133			`.cfi_undefined ldtr ; nop`
134
135			`.cfi_undefined mxcsr ; nop`
136			`.cfi_undefined xmm0 ; nop`
137			`.cfi_undefined xmm1 ; nop`
138			`.cfi_undefined xmm2 ; nop`
139			`.cfi_undefined xmm3 ; nop`
140			`.cfi_undefined xmm4 ; nop`
141			`.cfi_undefined xmm5 ; nop`
142			`.cfi_undefined xmm6 ; nop`
143			`.cfi_undefined xmm7 ; nop`
144
145			`.cfi_undefined fcw ; nop`
146			`.cfi_undefined fsw ; nop`
147			`.cfi_undefined st ; nop`
148			`.cfi_undefined st(1) ; nop`
149			`.cfi_undefined st(2) ; nop`
150			`.cfi_undefined st(3) ; nop`
151			`.cfi_undefined st(4) ; nop`
152			`.cfi_undefined st(5) ; nop`
153			`.cfi_undefined st(6) ; nop`
154			`.cfi_undefined st(7) ; nop`
155
156			`.cfi_undefined mm0 ; nop`
157			`.cfi_undefined mm1 ; nop`
158			`.cfi_undefined mm2 ; nop`
159			`.cfi_undefined mm3 ; nop`
160			`.cfi_undefined mm4 ; nop`
161			`.cfi_undefined mm5 ; nop`
162			`.cfi_undefined mm6 ; nop`
163			`.cfi_undefined mm7 ; nop`
164
165			`.cfi_endproc`

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[/] [openrisc/] [trunk/] [gnu-src/] [binutils-2.20.1/] [gas/] [testsuite/] [gas/] [cfi/] [cfi-i386.s] - Blame information for rev 219