Differences From Artifact [8a15676211]:
- File src/forwarding/apple-forwarding-i386.S — part of check-in [2566c341f3] at 2013-12-24 00:50:36 on branch trunk — Add forwarding for iOS/ARM64. (user: js, size: 2517) [annotate] [blame] [check-ins using]
To Artifact [d1c0103e06]:
- File
src/forwarding/apple-forwarding-i386.S
— part of check-in
[0c332aa2d2]
at
2013-12-27 02:07:14
on branch trunk
— Rework forwarding API and ABI.
It matches the Apple API and ABI now and the forwarding handler itself
determines whether it should forward or not.This moves handling of +[resolve{Class,Instance}Method:] to the runtime
and allows adding new kinds of forwarding without changing the runtime.Also fixes a potential stack problem in the forwarding for MIPS. (user: js, size: 2441) [annotate] [blame] [check-ins using]
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34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | movl %esp, %ebp pushl %ebx subl $20, %esp call get_eip .L0: movl 8(%ebp), %eax movl %eax, (%esp) call _object_getClass movl %eax, (%esp) movl L_sel_forwardingTargetForSelector_-.L0(%ebx), %eax movl %eax, 4(%esp) call _class_respondsToSelector testl %eax, %eax jz fail movl 8(%ebp), %eax movl %eax, (%esp) movl L_sel_forwardingTargetForSelector_-.L0(%ebx), %eax movl %eax, 4(%esp) movl 12(%ebp), %eax movl %eax, 8(%esp) call _objc_msgSend testl %eax, %eax jz fail | > > < | 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 | movl %esp, %ebp pushl %ebx subl $20, %esp call get_eip .L0: movl 8(%ebp), %eax movl %eax, (%esp) call _object_getClass movl %eax, (%esp) movl L_sel_forwardingTargetForSelector_-.L0(%ebx), %eax movl %eax, 4(%esp) call _class_respondsToSelector testl %eax, %eax jz fail movl 8(%ebp), %eax movl %eax, (%esp) movl L_sel_forwardingTargetForSelector_-.L0(%ebx), %eax movl %eax, 4(%esp) movl 12(%ebp), %eax movl %eax, 8(%esp) call _objc_msgSend testl %eax, %eax jz fail cmpl 8(%ebp), %eax je fail movl %eax, 8(%ebp) addl $20, %esp popl %ebx |
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83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 | movl %esp, %ebp pushl %ebx subl $20, %esp call get_eip .L1: movl 12(%ebp), %eax movl %eax, (%esp) call _object_getClass movl %eax, (%esp) movl L_sel_forwardingTargetForSelector_-.L1(%ebx), %eax movl %eax, 4(%esp) call _class_respondsToSelector testl %eax, %eax jz fail_stret movl 12(%ebp), %eax movl %eax, (%esp) movl L_sel_forwardingTargetForSelector_-.L1(%ebx), %eax movl %eax, 4(%esp) movl 16(%ebp), %eax movl %eax, 8(%esp) call _objc_msgSend testl %eax, %eax jz fail_stret | > > < < < < < < | | 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 | movl %esp, %ebp pushl %ebx subl $20, %esp call get_eip .L1: movl 12(%ebp), %eax movl %eax, (%esp) call _object_getClass movl %eax, (%esp) movl L_sel_forwardingTargetForSelector_-.L1(%ebx), %eax movl %eax, 4(%esp) call _class_respondsToSelector testl %eax, %eax jz fail_stret movl 12(%ebp), %eax movl %eax, (%esp) movl L_sel_forwardingTargetForSelector_-.L1(%ebx), %eax movl %eax, 4(%esp) movl 16(%ebp), %eax movl %eax, 8(%esp) call _objc_msgSend testl %eax, %eax jz fail_stret cmpl 12(%ebp), %eax je fail_stret movl %eax, 12(%ebp) addl $20, %esp popl %ebx popl %ebp jmp _objc_msgSend_stret fail_stret: addl $20, %esp popl %ebx popl %ebp jmp _of_method_not_found_stret get_eip: movl (%esp), %ebx ret |