Differences From Artifact [8b57a5618e]:
- File src/forwarding/forwarding-ppc-elf.S — part of check-in [3695e89467] at 2013-12-25 00:01:08 on branch trunk — Make section .ctors "aw". (user: js, size: 3649) [annotate] [blame] [check-ins using]
To Artifact [09cadab137]:
- File
src/forwarding/forwarding-ppc-elf.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: 4473) [annotate] [blame] [check-ins using]
| ︙ | ︙ | |||
39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 | stfd %f3, 56(%r1) stfd %f4, 64(%r1) stfd %f5, 72(%r1) stfd %f6, 80(%r1) stfd %f7, 88(%r1) stfd %f8, 96(%r1) lis %r4, sel_forwardingTargetForSelector_@ha la %r4, sel_forwardingTargetForSelector_@l(%r4) bl objc_msg_lookup@plt mtctr %r3 lwz %r3, 8(%r1) lis %r4, sel_forwardingTargetForSelector_@ha la %r4, sel_forwardingTargetForSelector_@l(%r4) lwz %r5, 12(%r1) bctrl stw %r3, 8(%r1) lwz %r4, 12(%r1) bl objc_msg_lookup@plt mtctr %r3 /* Restore all arguments */ | > > > > > > > > > > > > > > > > > | 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 71 72 73 74 75 76 77 78 79 | stfd %f3, 56(%r1) stfd %f4, 64(%r1) stfd %f5, 72(%r1) stfd %f6, 80(%r1) stfd %f7, 88(%r1) stfd %f8, 96(%r1) bl object_getClass@plt lis %r4, sel_forwardingTargetForSelector_@ha la %r4, sel_forwardingTargetForSelector_@l(%r4) bl class_respondsToSelector@plt cmpwi %r3, 0 beq- fail lwz %r3, 8(%r1) lis %r4, sel_forwardingTargetForSelector_@ha la %r4, sel_forwardingTargetForSelector_@l(%r4) bl objc_msg_lookup@plt mtctr %r3 lwz %r3, 8(%r1) lis %r4, sel_forwardingTargetForSelector_@ha la %r4, sel_forwardingTargetForSelector_@l(%r4) lwz %r5, 12(%r1) bctrl cmpwi %r3, 0 beq- fail lwz %r4, 8(%r1) cmpw %r3, %r4 beq- fail stw %r3, 8(%r1) lwz %r4, 12(%r1) bl objc_msg_lookup@plt mtctr %r3 /* Restore all arguments */ |
| ︙ | ︙ | |||
79 80 81 82 83 84 85 86 87 88 89 90 91 92 | lfd %f7, 88(%r1) lfd %f8, 96(%r1) lwz %r0, 116(%r1) mtlr %r0 addi %r1, %r1, 112 bctr .type of_forward, %function .size of_forward, .-of_forward of_forward_stret: stwu %r1, -112(%r1) mflr %r0 stw %r0, 116(%r1) | > > > > > > > > > > | 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 | lfd %f7, 88(%r1) lfd %f8, 96(%r1) lwz %r0, 116(%r1) mtlr %r0 addi %r1, %r1, 112 bctr fail: lwz %r3, 8(%r1) lwz %r4, 12(%r1) lwz %r0, 116(%r1) mtlr %r0 addi %r1, %r1, 112 b of_method_not_found@plt .type of_forward, %function .size of_forward, .-of_forward of_forward_stret: stwu %r1, -112(%r1) mflr %r0 stw %r0, 116(%r1) |
| ︙ | ︙ | |||
108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 | stfd %f4, 64(%r1) stfd %f5, 72(%r1) stfd %f6, 80(%r1) stfd %f7, 88(%r1) stfd %f8, 96(%r1) mr %r3, %r4 lis %r4, sel_forwardingTargetForSelector_@ha la %r4, sel_forwardingTargetForSelector_@l(%r4) bl objc_msg_lookup@plt mtctr %r3 lwz %r3, 12(%r1) lis %r4, sel_forwardingTargetForSelector_@ha la %r4, sel_forwardingTargetForSelector_@l(%r4) lwz %r5, 16(%r1) bctrl stw %r3, 12(%r1) lwz %r4, 16(%r1) bl objc_msg_lookup_stret@plt mtctr %r3 /* Restore all arguments */ | > > > > > > > > > > > > > > > > > | 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 | stfd %f4, 64(%r1) stfd %f5, 72(%r1) stfd %f6, 80(%r1) stfd %f7, 88(%r1) stfd %f8, 96(%r1) mr %r3, %r4 bl object_getClass@plt lis %r4, sel_forwardingTargetForSelector_@ha la %r4, sel_forwardingTargetForSelector_@l(%r4) bl class_respondsToSelector@plt cmpwi %r3, 0 beq- fail_stret lwz %r3, 12(%r1) lis %r4, sel_forwardingTargetForSelector_@ha la %r4, sel_forwardingTargetForSelector_@l(%r4) bl objc_msg_lookup@plt mtctr %r3 lwz %r3, 12(%r1) lis %r4, sel_forwardingTargetForSelector_@ha la %r4, sel_forwardingTargetForSelector_@l(%r4) lwz %r5, 16(%r1) bctrl cmpwi %r3, 0 beq- fail_stret lwz %r4, 12(%r1) cmpw %r3, %r4 beq- fail_stret stw %r3, 12(%r1) lwz %r4, 16(%r1) bl objc_msg_lookup_stret@plt mtctr %r3 /* Restore all arguments */ |
| ︙ | ︙ | |||
148 149 150 151 152 153 154 155 156 157 158 159 160 161 | lfd %f7, 88(%r1) lfd %f8, 96(%r1) lwz %r0, 116(%r1) mtlr %r0 addi %r1, %r1, 112 bctr .type of_forward_stret, %function .size of_forward_stret, .-of_forward_stret init: lis %r3, module@ha la %r3, module@l(%r3) b __objc_exec_class@plt | > > > > > > > > > > > | 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 | lfd %f7, 88(%r1) lfd %f8, 96(%r1) lwz %r0, 116(%r1) mtlr %r0 addi %r1, %r1, 112 bctr fail_stret: lwz %r3, 8(%r1) lwz %r4, 12(%r1) lwz %r5, 16(%r1) lwz %r0, 116(%r1) mtlr %r0 addi %r1, %r1, 112 b of_method_not_found_stret@plt .type of_forward_stret, %function .size of_forward_stret, .-of_forward_stret init: lis %r3, module@ha la %r3, module@l(%r3) b __objc_exec_class@plt |
| ︙ | ︙ |