3 #include "linux32_assym.h" /* system definitions */
4 #include <machine/asmacros.h> /* miscellaneous asm macros */
6 #include <amd64/linux32/linux32_syscall.h> /* system call numbers */
18 * To avoid excess stack frame the signal trampoline code emulates
19 * the 'call' instruction.
21 NON_GPROF_ENTRY(linux32_sigcode)
22 movl %esp, %ebx /* preserve sigframe */
26 add $.startsigcode-.getip0, %eax /* ret address */
28 jmp *LINUX_SIGF_HANDLER(%ebx)
31 movl $LINUX32_SYS_linux_sigreturn,%eax /* linux_sigreturn() */
32 int $0x80 /* enter kernel with args */
36 NON_GPROF_ENTRY(linux32_rt_sigcode)
37 leal LINUX_RT_SIGF_UC(%esp),%ebx /* linux ucp */
38 leal LINUX_RT_SIGF_SC(%ebx),%ecx /* linux sigcontext */
43 add $.startrtsigcode-.getip1, %eax /* ret address */
45 jmp *LINUX_RT_SIGF_HANDLER(%edi)
47 movl $LINUX32_SYS_linux_rt_sigreturn,%eax /* linux_rt_sigreturn() */
48 int $0x80 /* enter kernel with args */
52 NON_GPROF_ENTRY(linux32_vsyscall)
59 .section .note.Linux, "a",@note
60 .long 2f - 1f /* namesz */
62 .long 4f - 3f /* descsz */
69 .long LINUX_VERSION_CODE
75 #define do_cfa_expr(offset) \
76 .byte 0x0f; /* DW_CFA_def_cfa_expression */ \
77 .uleb128 11f-10f; /* length */ \
78 10: .byte 0x74; /* DW_OP_breg4 */ \
79 .sleb128 offset; /* offset */ \
80 .byte 0x06; /* DW_OP_deref */ \
85 .section .eh_frame,"a",@progbits
87 .long .LENDCIEDLSI1-.LSTARTCIEDLSI1
90 .byte 1 /* Version number */
91 .string "zRS" /* NULL-terminated
94 .uleb128 1 /* Code alignment factor */
95 .sleb128 -4 /* Data alignment factor */
96 .byte 8 /* Return address
99 .uleb128 1 /* Augmentation value length */
100 .byte 0x1b /* DW_EH_PE_pcrel|DW_EH_PE_sdata4. */
101 .byte 0 /* DW_CFA_nop */
106 .long .LENDFDEDLSI1-.LSTARTFDEDLSI1 /* Length FDE */
108 .long .LSTARTFDEDLSI1-.LSTARTFRAMEDLSI1 /* CIE pointer */
109 .long .startsigcode-. /* PC-relative start address */
110 .long .endsigcode-.startsigcode
111 .uleb128 0 /* Augmentation */
112 do_cfa_expr(LINUX_SIGF_SC-8)
116 .long .LENDFDEDLSI2-.LSTARTFDEDLSI2 /* Length FDE */
118 .long .LSTARTFDEDLSI2-.LSTARTFRAMEDLSI1 /* CIE pointer */
119 .long .startrtsigcode-. /* PC-relative start address */
120 .long .endrtsigcode-.startrtsigcode
121 .uleb128 0 /* Augmentation */
122 do_cfa_expr(LINUX_RT_SIGF_SC-4+LINUX_SC_ESP)
127 .section .eh_frame,"a",@progbits
129 .long .LENDCIEDLSI2-.LSTARTCIEDLSI2
132 .byte 1 /* Version number */
133 .string "zR" /* NULL-terminated
134 * augmentation string
136 .uleb128 1 /* Code alignment factor */
137 .sleb128 -4 /* Data alignment factor */
138 .byte 8 /* Return address register column */
139 .uleb128 1 /* Augmentation value length */
140 .byte 0x1b /* DW_EH_PE_pcrel|DW_EH_PE_sdata4. */
141 .byte 0x0c /* DW_CFA_def_cfa */
144 .byte 0x88 /* DW_CFA_offset, column 0x8 */
148 .long .LENDFDEDLSI3-.LSTARTFDEDLSI3 /* Length FDE */
150 .long .LSTARTFDEDLSI3-.LSTARTFRAMEDLSI2 /* CIE pointer */
151 .long .startvsyscall-. /* PC-relative start address */
152 .long .endvsyscall-.startvsyscall