diff options
Diffstat (limited to 'config/macintosh/powerpc.s')
| -rw-r--r-- | config/macintosh/powerpc.s | 52 |
1 files changed, 0 insertions, 52 deletions
diff --git a/config/macintosh/powerpc.s b/config/macintosh/powerpc.s deleted file mode 100644 index 71724a6..0000000 --- a/config/macintosh/powerpc.s +++ /dev/null @@ -1,52 +0,0 @@ -# coswitch(old, new, first) -# GPR3 GPR4 GPR5 - -# This code is modeled after the ppc_aix context switch -# it was compared to the Darwin context switch routine to -# get the syntax correct for the Apple gcc compiler. -.macro ENTRY - .text - .align 2 - .globl $0 -$0: -.endmacro - - .file "rswitch.s" - .set RSIZE, 80 ; room for regs 13-31, rounded up mod16 - - ENTRY _coswitch - - stwu r1, -RSIZE(r1) ; allocate stack frame - - ; Save Old Context: - stw r1, 0(r3) ; SP - stw r2, 4(r3) ; TOC - mflr r0 - stw r0, 8(r3) ; LR (return address) - mfcr r0 - stw r0, 12(r3) ; CR - stmw r13, -RSIZE(r1) ; GPRs 13-31 (save on stack) - - cmpi 0, r5, 0 - beq first ; if first time - - ; Restore new context: - lwz r1, 0(r4) ; SP - lwz r2, 4(r4) ; TOC - lwz r0, 8(r4) ; LR - mtlr r0 - lwz r0, 12(r4) ; CR - mtcr r0 - lmw r13, -RSIZE(r1) ; GPRs 13-31 (from stack) - - addic r1, r1, RSIZE ; deallocate stack frame - blr ; return into new context - -first: ; First-time call: - lwz r1, 0(r4) ; SP as figured by Icon - addic r1, r1, -64 ; save area for callee - addi r3, 0, 0 ; arg1 - addi r4, 0, 0 ; arg2 - bl _new_context ; new_context(0,0) - addi r3, 0, 0 - bl _syserr |