Adding support for PPC32 and PPC64.
Modification proposed by Gianluca Renzi.
This commit is contained in:
Jean-Samuel Reynaud
Seth Hillbrand
parent
320f4b6cd9
commit
8c69c81393
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@ -827,3 +827,444 @@ __asm (
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#endif
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#if defined(LIBCONTEXT_PLATFORM_linux_ppc32) && defined(LIBCONTEXT_COMPILER_gcc)
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__asm (
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".text\n"
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".globl jump_fcontext\n"
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".align 2\n"
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".type jump_fcontext,@function\n"
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"jump_fcontext:\n"
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" # reserve space on stack\n"
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" subi %r1, %r1, 240\n"
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" stw %r13, 152(%r1) # save R13\n"
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" stw %r14, 156(%r1) # save R14\n"
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" stw %r15, 160(%r1) # save R15\n"
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" stw %r16, 164(%r1) # save R16\n"
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" stw %r17, 168(%r1) # save R17\n"
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" stw %r18, 172(%r1) # save R18\n"
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" stw %r19, 176(%r1) # save R19\n"
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" stw %r20, 180(%r1) # save R20\n"
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" stw %r21, 184(%r1) # save R21\n"
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" stw %r22, 188(%r1) # save R22\n"
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" stw %r23, 192(%r1) # save R23\n"
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" stw %r24, 196(%r1) # save R24\n"
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" stw %r25, 200(%r1) # save R25\n"
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" stw %r26, 204(%r1) # save R26\n"
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" stw %r27, 208(%r1) # save R27\n"
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" stw %r28, 212(%r1) # save R28\n"
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" stw %r29, 216(%r1) # save R29\n"
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" stw %r30, 220(%r1) # save R30\n"
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" stw %r31, 224(%r1) # save R31\n"
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" # save CR\n"
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" mfcr %r0\n"
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" stw %r0, 228(%r1)\n"
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" # save LR\n"
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" mflr %r0\n"
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" stw %r0, 232(%r1)\n"
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" # save LR as PC\n"
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" stw %r0, 236(%r1)\n"
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" # test if fpu env should be preserved\n"
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" cmpwi cr7, %r6, 0\n"
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" beq cr7, 1f\n"
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" stfd %f14, 0(%r1) # save F14\n"
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" stfd %f15, 8(%r1) # save F15\n"
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" stfd %f16, 16(%r1) # save F16\n"
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" stfd %f17, 24(%r1) # save F17\n"
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" stfd %f18, 32(%r1) # save F18\n"
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" stfd %f19, 40(%r1) # save F19\n"
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" stfd %f20, 48(%r1) # save F20\n"
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" stfd %f21, 56(%r1) # save F21\n"
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" stfd %f22, 64(%r1) # save F22\n"
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" stfd %f23, 72(%r1) # save F23\n"
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" stfd %f24, 80(%r1) # save F24\n"
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" stfd %f25, 88(%r1) # save F25\n"
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" stfd %f26, 96(%r1) # save F26\n"
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" stfd %f27, 104(%r1) # save F27\n"
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" stfd %f28, 112(%r1) # save F28\n"
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" stfd %f29, 120(%r1) # save F29\n"
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" stfd %f30, 128(%r1) # save F30\n"
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" stfd %f31, 136(%r1) # save F31\n"
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" mffs %f0 # load FPSCR\n"
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" stfd %f0, 144(%r1) # save FPSCR\n"
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"1:\n"
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" # store RSP (pointing to context-data) in R3\n"
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" stw %r1, 0(%r3)\n"
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" # restore RSP (pointing to context-data) from R4\n"
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" mr %r1, %r4\n"
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" # test if fpu env should be preserved\n"
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" cmpwi cr7, %r6, 0\n"
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" beq cr7, 2f\n"
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" lfd %f14, 0(%r1) # restore F14\n"
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" lfd %f15, 8(%r1) # restore F15\n"
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" lfd %f16, 16(%r1) # restore F16\n"
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" lfd %f17, 24(%r1) # restore F17\n"
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" lfd %f18, 32(%r1) # restore F18\n"
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" lfd %f19, 40(%r1) # restore F19\n"
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" lfd %f20, 48(%r1) # restore F20\n"
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" lfd %f21, 56(%r1) # restore F21\n"
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" lfd %f22, 64(%r1) # restore F22\n"
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" lfd %f23, 72(%r1) # restore F23\n"
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" lfd %f24, 80(%r1) # restore F24\n"
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" lfd %f25, 88(%r1) # restore F25\n"
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" lfd %f26, 96(%r1) # restore F26\n"
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" lfd %f27, 104(%r1) # restore F27\n"
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" lfd %f28, 112(%r1) # restore F28\n"
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" lfd %f29, 120(%r1) # restore F29\n"
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" lfd %f30, 128(%r1) # restore F30\n"
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" lfd %f31, 136(%r1) # restore F31\n"
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" lfd %f0, 144(%r1) # load FPSCR\n"
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" mtfsf 0xff, %f0 # restore FPSCR\n"
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"2:\n"
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" lwz %r13, 152(%r1) # restore R13\n"
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" lwz %r14, 156(%r1) # restore R14\n"
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" lwz %r15, 160(%r1) # restore R15\n"
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" lwz %r16, 164(%r1) # restore R16\n"
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" lwz %r17, 168(%r1) # restore R17\n"
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" lwz %r18, 172(%r1) # restore R18\n"
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" lwz %r19, 176(%r1) # restore R19\n"
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" lwz %r20, 180(%r1) # restore R20\n"
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" lwz %r21, 184(%r1) # restore R21\n"
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" lwz %r22, 188(%r1) # restore R22\n"
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" lwz %r23, 192(%r1) # restore R23\n"
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" lwz %r24, 196(%r1) # restore R24\n"
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" lwz %r25, 200(%r1) # restore R25\n"
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" lwz %r26, 204(%r1) # restore R26\n"
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" lwz %r27, 208(%r1) # restore R27\n"
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" lwz %r28, 212(%r1) # restore R28\n"
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" lwz %r29, 216(%r1) # restore R29\n"
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" lwz %r30, 220(%r1) # restore R30\n"
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" lwz %r31, 224(%r1) # restore R31\n"
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" # restore CR\n"
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" lwz %r0, 228(%r1)\n"
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" mtcr %r0\n"
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" # restore LR\n"
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" lwz %r0, 232(%r1)\n"
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" mtlr %r0\n"
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" # load PC\n"
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" lwz %r0, 236(%r1)\n"
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" # restore CTR\n"
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" mtctr %r0\n"
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" # adjust stack\n"
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" addi %r1, %r1, 240\n"
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" # use third arg as return value after jump\n"
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" # use third arg as first arg in context function\n"
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" mr %r3, %r5\n"
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" # jump to context\n"
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" bctr\n"
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".size jump_fcontext, .-jump_fcontext\n"
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".section .note.GNU-stack,\"\",%progbits\n"
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);
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#endif
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#if defined(LIBCONTEXT_PLATFORM_linux_ppc32) && defined(LIBCONTEXT_COMPILER_gcc)
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__asm (
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".text\n"
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".globl make_fcontext\n"
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".align 2\n"
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".type make_fcontext,@function\n"
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"make_fcontext:\n"
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" # save return address into R6\n"
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" mflr %r6\n"
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" # first arg of make_fcontext() == top address of context-function\n"
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" # shift address in R3 to lower 16 byte boundary\n"
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" clrrwi %r3, %r3, 4\n"
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" # reserve space for context-data on context-stack\n"
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" # including 64 byte of linkage + parameter area (R1 % 16 == 0)\n"
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" subi %r3, %r3, 304\n"
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" # third arg of make_fcontext() == address of context-function\n"
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" stw %r5, 236(%r3)\n"
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" # load LR\n"
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" mflr %r0\n"
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" # jump to label 1\n"
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" bl 1f\n"
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"1:\n"
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" # load LR into R4\n"
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" mflr %r4\n"
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" # compute abs address of label finish\n"
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" addi %r4, %r4, finish - 1b\n"
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" # restore LR\n"
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" mtlr %r0\n"
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" # save address of finish as return-address for context-function\n"
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" # will be entered after context-function returns\n"
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" stw %r4, 232(%r3)\n"
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" # restore return address from R6\n"
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" mtlr %r6\n"
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" blr # return pointer to context-data\n"
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"finish:\n"
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" # save return address into R0\n"
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" mflr %r0\n"
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" # save return address on stack, set up stack frame\n"
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" stw %r0, 4(%r1)\n"
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" # allocate stack space, R1 % 16 == 0\n"
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" stwu %r1, -16(%r1)\n"
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" # exit code is zero\n"
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" li %r3, 0\n"
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" # exit application\n"
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" bl _exit@plt\n"
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".size make_fcontext, .-make_fcontext\n"
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".section .note.GNU-stack,\"\",%progbits\n"
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);
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#endif
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#if defined(LIBCONTEXT_PLATFORM_linux_ppc64) && defined(LIBCONTEXT_COMPILER_gcc)
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__asm (
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".globl jump_fcontext\n"
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"#if _CALL_ELF == 2\n"
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" .text\n"
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" .align 2\n"
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"jump_fcontext:\n"
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" addis %r2, %r12, .TOC.-jump_fcontext@ha\n"
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" addi %r2, %r2, .TOC.-jump_fcontext@l\n"
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" .localentry jump_fcontext, . - jump_fcontext\n"
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"#else\n"
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" .section \".opd\",\"aw\"\n"
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" .align 3\n"
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"jump_fcontext:\n"
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"# ifdef _CALL_LINUX\n"
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" .quad .L.jump_fcontext,.TOC.@tocbase,0\n"
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" .type jump_fcontext,@function\n"
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" .text\n"
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" .align 2\n"
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".L.jump_fcontext:\n"
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"# else\n"
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" .hidden .jump_fcontext\n"
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" .globl .jump_fcontext\n"
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" .quad .jump_fcontext,.TOC.@tocbase,0\n"
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" .size jump_fcontext,24\n"
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" .type .jump_fcontext,@function\n"
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" .text\n"
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" .align 2\n"
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".jump_fcontext:\n"
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"# endif\n"
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"#endif\n"
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" # reserve space on stack\n"
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" subi %r1, %r1, 328\n"
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"#if _CALL_ELF != 2\n"
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" std %r2, 152(%r1) # save TOC\n"
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"#endif\n"
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" std %r14, 160(%r1) # save R14\n"
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" std %r15, 168(%r1) # save R15\n"
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" std %r16, 176(%r1) # save R16\n"
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" std %r17, 184(%r1) # save R17\n"
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" std %r18, 192(%r1) # save R18\n"
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" std %r19, 200(%r1) # save R19\n"
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" std %r20, 208(%r1) # save R20\n"
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" std %r21, 216(%r1) # save R21\n"
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" std %r22, 224(%r1) # save R22\n"
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" std %r23, 232(%r1) # save R23\n"
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" std %r24, 240(%r1) # save R24\n"
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" std %r25, 248(%r1) # save R25\n"
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" std %r26, 256(%r1) # save R26\n"
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" std %r27, 264(%r1) # save R27\n"
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" std %r28, 272(%r1) # save R28\n"
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" std %r29, 280(%r1) # save R29\n"
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" std %r30, 288(%r1) # save R30\n"
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" std %r31, 296(%r1) # save R31\n"
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" # save CR\n"
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" mfcr %r0\n"
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" std %r0, 304(%r1)\n"
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" # save LR\n"
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" mflr %r0\n"
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" std %r0, 312(%r1)\n"
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" # save LR as PC\n"
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" std %r0, 320(%r1)\n"
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" # test if fpu env should be preserved\n"
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" cmpwi cr7, %r6, 0\n"
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" beq cr7, 1f\n"
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" stfd %f14, 0(%r1) # save F14\n"
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" stfd %f15, 8(%r1) # save F15\n"
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" stfd %f16, 16(%r1) # save F16\n"
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" stfd %f17, 24(%r1) # save F17\n"
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" stfd %f18, 32(%r1) # save F18\n"
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" stfd %f19, 40(%r1) # save F19\n"
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" stfd %f20, 48(%r1) # save F20\n"
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" stfd %f21, 56(%r1) # save F21\n"
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" stfd %f22, 64(%r1) # save F22\n"
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" stfd %f23, 72(%r1) # save F23\n"
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" stfd %f24, 80(%r1) # save F24\n"
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" stfd %f25, 88(%r1) # save F25\n"
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" stfd %f26, 96(%r1) # save F26\n"
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" stfd %f27, 104(%r1) # save F27\n"
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" stfd %f28, 112(%r1) # save F28\n"
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" stfd %f29, 120(%r1) # save F29\n"
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" stfd %f30, 128(%r1) # save F30\n"
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" stfd %f31, 136(%r1) # save F31\n"
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" mffs %f0 # load FPSCR\n"
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" stfd %f0, 144(%r1) # save FPSCR\n"
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"1:\n"
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" # store RSP (pointing to context-data) in R3\n"
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" std %r1, 0(%r3)\n"
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" # restore RSP (pointing to context-data) from R4\n"
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" mr %r1, %r4\n"
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" # test if fpu env should be preserved\n"
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" cmpwi cr7, %r6, 0\n"
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" beq cr7, 2f\n"
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" lfd %f14, 0(%r1) # restore F14\n"
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" lfd %f15, 8(%r1) # restore F15\n"
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" lfd %f16, 16(%r1) # restore F16\n"
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" lfd %f17, 24(%r1) # restore F17\n"
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" lfd %f18, 32(%r1) # restore F18\n"
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" lfd %f19, 40(%r1) # restore F19\n"
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" lfd %f20, 48(%r1) # restore F20\n"
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" lfd %f21, 56(%r1) # restore F21\n"
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" lfd %f22, 64(%r1) # restore F22\n"
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" lfd %f23, 72(%r1) # restore F23\n"
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" lfd %f24, 80(%r1) # restore F24\n"
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" lfd %f25, 88(%r1) # restore F25\n"
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" lfd %f26, 96(%r1) # restore F26\n"
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" lfd %f27, 104(%r1) # restore F27\n"
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" lfd %f28, 112(%r1) # restore F28\n"
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" lfd %f29, 120(%r1) # restore F29\n"
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" lfd %f30, 128(%r1) # restore F30\n"
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" lfd %f31, 136(%r1) # restore F31\n"
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" lfd %f0, 144(%r1) # load FPSCR\n"
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" mtfsf 0xff, %f0 # restore FPSCR\n"
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"2:\n"
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"#if _CALL_ELF != 2\n"
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" ld %r2, 152(%r1) # restore TOC\n"
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"#endif\n"
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" ld %r14, 160(%r1) # restore R14\n"
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" ld %r15, 168(%r1) # restore R15\n"
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" ld %r16, 176(%r1) # restore R16\n"
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" ld %r17, 184(%r1) # restore R17\n"
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" ld %r18, 192(%r1) # restore R18\n"
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" ld %r19, 200(%r1) # restore R19\n"
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" ld %r20, 208(%r1) # restore R20\n"
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" ld %r21, 216(%r1) # restore R21\n"
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" ld %r22, 224(%r1) # restore R22\n"
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" ld %r23, 232(%r1) # restore R23\n"
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" ld %r24, 240(%r1) # restore R24\n"
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" ld %r25, 248(%r1) # restore R25\n"
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" ld %r26, 256(%r1) # restore R26\n"
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" ld %r27, 264(%r1) # restore R27\n"
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" ld %r28, 272(%r1) # restore R28\n"
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" ld %r29, 280(%r1) # restore R29\n"
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" ld %r30, 288(%r1) # restore R30\n"
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" ld %r31, 296(%r1) # restore R31\n"
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" # restore CR\n"
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" ld %r0, 304(%r1)\n"
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" mtcr %r0\n"
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" # restore LR\n"
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" ld %r0, 312(%r1)\n"
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" mtlr %r0\n"
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" # load PC\n"
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" ld %r12, 320(%r1)\n"
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" # restore CTR\n"
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" mtctr %r12\n"
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" # adjust stack\n"
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" addi %r1, %r1, 328\n"
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" # use third arg as return value after jump\n"
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" # use third arg as first arg in context function\n"
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" mr %r3, %r5\n"
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" # jump to context\n"
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" bctr\n"
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"#if _CALL_ELF == 2\n"
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" .size jump_fcontext, .-jump_fcontext\n"
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"#else\n"
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"# ifdef _CALL_LINUX\n"
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" .size .jump_fcontext, .-.L.jump_fcontext\n"
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"# else\n"
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" .size .jump_fcontext, .-.jump_fcontext\n"
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"# endif\n"
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"#endif\n"
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".section .note.GNU-stack,\"\",%progbits\n"
|
||||
);
|
||||
|
||||
#endif
|
||||
|
||||
#if defined(LIBCONTEXT_PLATFORM_linux_ppc64) && defined(LIBCONTEXT_COMPILER_gcc)
|
||||
__asm (
|
||||
".globl make_fcontext\n"
|
||||
"#if _CALL_ELF == 2\n"
|
||||
" .text\n"
|
||||
" .align 2\n"
|
||||
"make_fcontext:\n"
|
||||
" addis %r2, %r12, .TOC.-make_fcontext@ha\n"
|
||||
" addi %r2, %r2, .TOC.-make_fcontext@l\n"
|
||||
" .localentry make_fcontext, . - make_fcontext\n"
|
||||
"#else\n"
|
||||
" .section \".opd\",\"aw\"\n"
|
||||
" .align 3\n"
|
||||
"make_fcontext:\n"
|
||||
"# ifdef _CALL_LINUX\n"
|
||||
" .quad .L.make_fcontext,.TOC.@tocbase,0\n"
|
||||
" .type make_fcontext,@function\n"
|
||||
" .text\n"
|
||||
" .align 2\n"
|
||||
".L.make_fcontext:\n"
|
||||
"# else\n"
|
||||
" .hidden .make_fcontext\n"
|
||||
" .globl .make_fcontext\n"
|
||||
" .quad .make_fcontext,.TOC.@tocbase,0\n"
|
||||
" .size make_fcontext,24\n"
|
||||
" .type .make_fcontext,@function\n"
|
||||
" .text\n"
|
||||
" .align 2\n"
|
||||
".make_fcontext:\n"
|
||||
"# endif\n"
|
||||
"#endif\n"
|
||||
" # save return address into R6\n"
|
||||
" mflr %r6\n"
|
||||
" # first arg of make_fcontext() == top address of context-stack\n"
|
||||
" # shift address in R3 to lower 16 byte boundary\n"
|
||||
" clrrdi %r3, %r3, 4\n"
|
||||
" # reserve space for context-data on context-stack\n"
|
||||
" # including 64 byte of linkage + parameter area (R1 % 16 == 0)\n"
|
||||
" subi %r3, %r3, 392\n"
|
||||
" # third arg of make_fcontext() == address of context-function\n"
|
||||
" # entry point (ELFv2) or descriptor (ELFv1)\n"
|
||||
"#if _CALL_ELF == 2\n"
|
||||
" # save address of context-function entry point\n"
|
||||
" std %r5, 320(%r3)\n"
|
||||
"#else\n"
|
||||
" # save address of context-function entry point\n"
|
||||
" ld %r4, 0(%r5)\n"
|
||||
" std %r4, 320(%r3)\n"
|
||||
" # save TOC of context-function\n"
|
||||
" ld %r4, 8(%r5)\n"
|
||||
" std %r4, 152(%r3)\n"
|
||||
"#endif\n"
|
||||
" # load LR\n"
|
||||
" mflr %r0\n"
|
||||
" # jump to label 1\n"
|
||||
" bl 1f\n"
|
||||
"1:\n"
|
||||
" # load LR into R4\n"
|
||||
" mflr %r4\n"
|
||||
" # compute abs address of label finish\n"
|
||||
" addi %r4, %r4, finish - 1b\n"
|
||||
" # restore LR\n"
|
||||
" mtlr %r0\n"
|
||||
" # save address of finish as return-address for context-function\n"
|
||||
" # will be entered after context-function returns\n"
|
||||
" std %r4, 312(%r3)\n"
|
||||
" # restore return address from R6\n"
|
||||
" mtlr %r6\n"
|
||||
" blr # return pointer to context-data\n"
|
||||
"finish:\n"
|
||||
" # save return address into R0\n"
|
||||
" mflr %r0\n"
|
||||
" # save return address on stack, set up stack frame\n"
|
||||
" std %r0, 8(%r1)\n"
|
||||
" # allocate stack space, R1 % 16 == 0\n"
|
||||
" stdu %r1, -32(%r1)\n"
|
||||
" # exit code is zero\n"
|
||||
" li %r3, 0\n"
|
||||
" # exit application\n"
|
||||
" bl _exit\n"
|
||||
" nop\n"
|
||||
"#if _CALL_ELF == 2\n"
|
||||
" .size make_fcontext, .-make_fcontext\n"
|
||||
"#else\n"
|
||||
"# ifdef _CALL_LINUX\n"
|
||||
" .size .make_fcontext, .-.L.make_fcontext\n"
|
||||
"# else\n"
|
||||
" .size .make_fcontext, .-.make_fcontext\n"
|
||||
"# endif\n"
|
||||
"#endif\n"
|
||||
".section .note.GNU-stack,\"\",%progbits\n"
|
||||
);
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -42,6 +42,15 @@
|
|||
#elif (__mips__ && _MIPS_SIM == _ABI64)
|
||||
#define LIBCONTEXT_PLATFORM_linux_mips_n64
|
||||
#define LIBCONTEXT_CALL_CONVENTION
|
||||
#elif __powerpc__
|
||||
#ifdef _ARCH_PPC64
|
||||
#define LIBCONTEXT_PLATFORM_linux_ppc64
|
||||
#define LIBCONTEXT_CALL_CONVENTION
|
||||
#endif
|
||||
#ifdef _ARCH_PPC
|
||||
#define LIBCONTEXT_PLATFORM_linux_ppc32
|
||||
#define LIBCONTEXT_CALL_CONVENTION
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#elif defined(__MINGW32__) || defined(__MINGW64__)
|
||||
|
|
|
|||
Loading…
Reference in New Issue