diff options
Diffstat (limited to 'sysdeps/powerpc/powerpc32/dl-trampoline.S')
| -rw-r--r-- | sysdeps/powerpc/powerpc32/dl-trampoline.S | 185 |
1 files changed, 123 insertions, 62 deletions
diff --git a/sysdeps/powerpc/powerpc32/dl-trampoline.S b/sysdeps/powerpc/powerpc32/dl-trampoline.S index 5585192ea8..ea5ce7b45a 100644 --- a/sysdeps/powerpc/powerpc32/dl-trampoline.S +++ b/sysdeps/powerpc/powerpc32/dl-trampoline.S @@ -26,43 +26,43 @@ _dl_runtime_resolve: # We need to save the registers used to pass parameters, and register 0, # which is used by _mcount; the registers are saved in a stack frame. - stwu 1,-64(1) - stw 0,12(1) - stw 3,16(1) - stw 4,20(1) + stwu r1,-64(r1) + stw r0,12(r1) + stw r3,16(r1) + stw r4,20(r1) # The code that calls this has put parameters for `fixup' in r12 and r11. - mr 3,12 - stw 5,24(1) - mr 4,11 - stw 6,28(1) - mflr 0 + mr r3,r12 + stw r5,24(r1) + mr r4,r11 + stw r6,28(r1) + mflr r0 # We also need to save some of the condition register fields - stw 7,32(1) - stw 0,48(1) - stw 8,36(1) - mfcr 0 - stw 9,40(1) - stw 10,44(1) - stw 0,8(1) + stw r7,32(r1) + stw r0,48(r1) + stw r8,36(r1) + mfcr r0 + stw r9,40(r1) + stw r10,44(r1) + stw r0,8(r1) bl _dl_fixup@local # 'fixup' returns the address we want to branch to. - mtctr 3 + mtctr r3 # Put the registers back... - lwz 0,48(1) - lwz 10,44(1) - lwz 9,40(1) - mtlr 0 - lwz 8,36(1) - lwz 0,8(1) - lwz 7,32(1) - lwz 6,28(1) - mtcrf 0xFF,0 - lwz 5,24(1) - lwz 4,20(1) - lwz 3,16(1) - lwz 0,12(1) + lwz r0,48(r1) + lwz r10,44(r1) + lwz r9,40(r1) + mtlr r0 + lwz r8,36(r1) + lwz r0,8(r1) + lwz r7,32(r1) + lwz r6,28(r1) + mtcrf 0xFF,r0 + lwz r5,24(r1) + lwz r4,20(r1) + lwz r3,16(r1) + lwz r0,12(r1) # ...unwind the stack frame, and jump to the PLT entry we updated. - addi 1,1,64 + addi r1,r1,64 bctr .size _dl_runtime_resolve,.-_dl_runtime_resolve @@ -72,42 +72,103 @@ _dl_runtime_resolve: _dl_prof_resolve: # We need to save the registers used to pass parameters, and register 0, # which is used by _mcount; the registers are saved in a stack frame. - stwu 1,-64(1) - stw 0,12(1) - stw 3,16(1) - stw 4,20(1) + stwu r1,-320(r1) + /* Stack layout: + + +312 stackframe + +308 lr + +304 r1 + +288 v12 + +272 v11 + +256 v10 + +240 v9 + +224 v8 + +208 v7 + +192 v6 + +176 v5 + +160 v4 + +144 v3 + +128 v2 + +112 v1 + +104 fp8 + +96 fp7 + +88 fp6 + +80 fp5 + +72 fp4 + +64 fp3 + +56 fp2 + +48 fp1 + +44 r10 + +40 r9 + +36 r8 + +32 r7 + +28 r6 + +24 r5 + +20 r4 + +16 r3 + +12 r0 + +8 cr + r1 link + */ + stw r0,12(r1) + stw r3,16(r1) + stw r4,20(r1) # The code that calls this has put parameters for `fixup' in r12 and r11. - mr 3,12 - stw 5,24(1) - mr 4,11 - stw 6,28(1) - mflr 5 + mr r3,r12 + stw r5,24(r1) + mr r4,r11 + stw r6,28(r1) + mflr r5 # We also need to save some of the condition register fields. - stw 7,32(1) - stw 5,48(1) - stw 8,36(1) - mfcr 0 - stw 9,40(1) - stw 10,44(1) - stw 0,8(1) + stw r7,32(r1) + stw r5,308(r1) + stw r8,36(r1) + mfcr r0 + stw r9,40(r1) + stw r10,44(r1) + stw r0,8(r1) + # Save the floating point registers + stfd fp1,48(r1) + stfd fp2,56(r1) + stfd fp3,64(r1) + stfd fp4,72(r1) + stfd fp5,80(r1) + stfd fp6,88(r1) + stfd fp7,96(r1) + stfd fp8,104(r1) + # XXX TODO: store vmx registers + # Load the extra parameters. + addi r6,r1,16 + addi r7,r1,312 + li r0,-1 + stw r0,0(r7) bl _dl_profile_fixup@local # 'fixup' returns the address we want to branch to. - mtctr 3 + mtctr r3 # Put the registers back... - lwz 0,48(1) - lwz 10,44(1) - lwz 9,40(1) - mtlr 0 - lwz 8,36(1) - lwz 0,8(1) - lwz 7,32(1) - lwz 6,28(1) - mtcrf 0xFF,0 - lwz 5,24(1) - lwz 4,20(1) - lwz 3,16(1) - lwz 0,12(1) + lwz r0,308(r1) + lwz r10,44(r1) + lwz r9,40(r1) + mtlr r0 + lwz r8,36(r1) + lwz r0,8(r1) + lwz r7,32(r1) + lwz r6,28(r1) + mtcrf 0xFF,r0 + lwz r5,24(r1) + lwz r4,20(r1) + lwz r3,16(r1) + lwz r0,12(r1) + # Load the floating point registers. + lfd fp1,48(r1) + lfd fp2,56(r1) + lfd fp3,64(r1) + lfd fp4,72(r1) + lfd fp5,80(r1) + lfd fp6,88(r1) + lfd fp7,96(r1) + lfd fp8,104(r1) # ...unwind the stack frame, and jump to the PLT entry we updated. - addi 1,1,64 + addi r1,r1,320 bctr .size _dl_prof_resolve,.-_dl_prof_resolve |