Root/arch/sparc/prom/cif.S

Source at commit 0de2b2b3be81048189a32f7a3d3ba0ba9ec817b6 created 11 years 11 months ago.
By Maarten ter Huurne, MIPS: JZ4740: Fixed value for round robin constant.
1/* cif.S: PROM entry/exit assembler trampolines.
2 *
3 * Copyright (C) 1996, 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
4 * Copyright (C) 2005, 2006 David S. Miller <davem@davemloft.net>
5 */
6
7#include <asm/pstate.h>
8#include <asm/cpudata.h>
9#include <asm/thread_info.h>
10
11    .text
12    .globl prom_cif_direct
13prom_cif_direct:
14    sethi %hi(p1275buf), %o1
15    or %o1, %lo(p1275buf), %o1
16    ldx [%o1 + 0x0010], %o2 ! prom_cif_stack
17    save %o2, -192, %sp
18    ldx [%i1 + 0x0008], %l2 ! prom_cif_handler
19    mov %g4, %l0
20    mov %g5, %l1
21    mov %g6, %l3
22    call %l2
23     mov %i0, %o0 ! prom_args
24    mov %l0, %g4
25    mov %l1, %g5
26    mov %l3, %g6
27    ret
28     restore
29
30    .globl prom_cif_callback
31prom_cif_callback:
32    sethi %hi(p1275buf), %o1
33    or %o1, %lo(p1275buf), %o1
34    save %sp, -192, %sp
35    TRAP_LOAD_THREAD_REG(%g6, %g1)
36    LOAD_PER_CPU_BASE(%g5, %g6, %g4, %g3, %o0)
37    ldx [%g6 + TI_TASK], %g4
38    call prom_world
39     mov 0, %o0
40    ldx [%i1 + 0x000], %l2
41    call %l2
42     mov %i0, %o0
43    mov %o0, %l1
44    call prom_world
45     mov 1, %o0
46    ret
47     restore %l1, 0, %o0
48
49

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