80 lines
1.6 KiB
Plaintext
80 lines
1.6 KiB
Plaintext
$NetBSD: patch-ac,v 1.10 2009/02/08 12:51:04 asau Exp $
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--- config/bsd/powerpc.s.orig 2005-06-16 19:55:17.000000000 +0400
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+++ config/bsd/powerpc.s 2009-02-08 02:27:54.000000000 +0300
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@@ -1,9 +1,11 @@
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#
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-# coswitch for the PowerPC architecture
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+# coswitch for the PowerPC architecture
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#
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.file "rswitch.s"
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+ .set RSIZE, 80 # room for regs 14-31, rounded up mod16
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+
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.data
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errmsg: .string "new_context() returned in coswitch\n"
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@@ -13,30 +15,13 @@
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.type coswitch,@function
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coswitch:
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- stwu 1, -80(1) # allocate stack frame
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+ stwu 1, -RSIZE(1) # allocate stack frame
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# Save Old Context:
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stw 1, 0(3) # SP
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mflr 0
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stw 0, 4(3) # LR (return address)
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- stw 14, 0(1) # GPRs 14-31 (save on stack)
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- stw 15, 4(1)
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- stw 16, 8(1)
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- stw 17, 12(1)
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- stw 18, 16(1)
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- stw 19, 20(1)
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- stw 20, 24(1)
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- stw 21, 28(1)
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- stw 22, 32(1)
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- stw 23, 36(1)
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- stw 24, 40(1)
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- stw 25, 44(1)
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- stw 26, 48(1)
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- stw 27, 52(1)
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- stw 28, 56(1)
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- stw 29, 60(1)
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- stw 30, 64(1)
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- stw 31, 68(1)
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+ stmw 14, -RSIZE(1) # GPRs 14-31 (save on stack)
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cmpi 0, 5, 0
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beq first # if first time
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@@ -45,26 +30,9 @@
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lwz 1, 0(4) # SP
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lwz 0, 4(4) # LR
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mtlr 0
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- lwz 14, 0(1) # GPRs 14-31 (from stack)
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- lwz 15, 4(1)
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- lwz 16, 8(1)
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- lwz 17, 12(1)
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- lwz 18, 16(1)
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- lwz 19, 20(1)
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- lwz 20, 24(1)
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- lwz 21, 28(1)
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- lwz 22, 32(1)
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- lwz 23, 36(1)
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- lwz 24, 40(1)
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- lwz 25, 44(1)
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- lwz 26, 48(1)
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- lwz 27, 52(1)
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- lwz 28, 56(1)
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- lwz 29, 60(1)
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- lwz 30, 64(1)
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- lwz 31, 68(1)
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+ lmw 14, -RSIZE(1) # GPRs 14-31 (from stack)
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- addic 1, 1, 80 # deallocate stack frame
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+ addic 1, 1, RSIZE # deallocate stack frame
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blr # return into new context
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first: # First-time call:
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