summaryrefslogtreecommitdiff
path: root/arch/mips/dec/prom/call_o32.S
diff options
context:
space:
mode:
Diffstat (limited to 'arch/mips/dec/prom/call_o32.S')
-rw-r--r--arch/mips/dec/prom/call_o32.S89
1 files changed, 0 insertions, 89 deletions
diff --git a/arch/mips/dec/prom/call_o32.S b/arch/mips/dec/prom/call_o32.S
deleted file mode 100644
index 8c8498159e43..000000000000
--- a/arch/mips/dec/prom/call_o32.S
+++ /dev/null
@@ -1,89 +0,0 @@
-/*
- * O32 interface for the 64 (or N32) ABI.
- *
- * Copyright (C) 2002 Maciej W. Rozycki
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <asm/asm.h>
-#include <asm/regdef.h>
-
-/* Maximum number of arguments supported. Must be even! */
-#define O32_ARGC 32
-/* Number of static registers we save. */
-#define O32_STATC 11
-/* Frame size for both of the above. */
-#define O32_FRAMESZ (4 * O32_ARGC + SZREG * O32_STATC)
-
- .text
-
-/*
- * O32 function call dispatcher, for interfacing 32-bit ROM routines.
- *
- * The standard 64 (N32) calling sequence is supported, with a0
- * holding a function pointer, a1-a7 -- its first seven arguments
- * and the stack -- remaining ones (up to O32_ARGC, including a1-a7).
- * Static registers, gp and fp are preserved, v0 holds a result.
- * This code relies on the called o32 function for sp and ra
- * restoration and thus both this dispatcher and the current stack
- * have to be placed in a KSEGx (or KUSEG) address space. Any
- * pointers passed have to point to addresses within one of these
- * spaces as well.
- */
-NESTED(call_o32, O32_FRAMESZ, ra)
- REG_SUBU sp,O32_FRAMESZ
-
- REG_S ra,O32_FRAMESZ-1*SZREG(sp)
- REG_S fp,O32_FRAMESZ-2*SZREG(sp)
- REG_S gp,O32_FRAMESZ-3*SZREG(sp)
- REG_S s7,O32_FRAMESZ-4*SZREG(sp)
- REG_S s6,O32_FRAMESZ-5*SZREG(sp)
- REG_S s5,O32_FRAMESZ-6*SZREG(sp)
- REG_S s4,O32_FRAMESZ-7*SZREG(sp)
- REG_S s3,O32_FRAMESZ-8*SZREG(sp)
- REG_S s2,O32_FRAMESZ-9*SZREG(sp)
- REG_S s1,O32_FRAMESZ-10*SZREG(sp)
- REG_S s0,O32_FRAMESZ-11*SZREG(sp)
-
- move jp,a0
-
- sll a0,a1,zero
- sll a1,a2,zero
- sll a2,a3,zero
- sll a3,a4,zero
- sw a5,0x10(sp)
- sw a6,0x14(sp)
- sw a7,0x18(sp)
-
- PTR_LA t0,O32_FRAMESZ(sp)
- PTR_LA t1,0x1c(sp)
- li t2,O32_ARGC-7
-1:
- lw t3,(t0)
- REG_ADDU t0,SZREG
- sw t3,(t1)
- REG_SUBU t2,1
- REG_ADDU t1,4
- bnez t2,1b
-
- jalr jp
-
- REG_L s0,O32_FRAMESZ-11*SZREG(sp)
- REG_L s1,O32_FRAMESZ-10*SZREG(sp)
- REG_L s2,O32_FRAMESZ-9*SZREG(sp)
- REG_L s3,O32_FRAMESZ-8*SZREG(sp)
- REG_L s4,O32_FRAMESZ-7*SZREG(sp)
- REG_L s5,O32_FRAMESZ-6*SZREG(sp)
- REG_L s6,O32_FRAMESZ-5*SZREG(sp)
- REG_L s7,O32_FRAMESZ-4*SZREG(sp)
- REG_L gp,O32_FRAMESZ-3*SZREG(sp)
- REG_L fp,O32_FRAMESZ-2*SZREG(sp)
- REG_L ra,O32_FRAMESZ-1*SZREG(sp)
-
- REG_ADDU sp,O32_FRAMESZ
- jr ra
-END(call_o32)