1/* Linux-specific definitions: */
2
3/* Define various structure offsets to simplify cross-compilation.  */
4
5/* FIXME: Currently these are only used in getcontext.S, which is only used
6   for a local unwinder, so we can use the compile-time ABI.  At a later date
7   we will want all three here, to use for signal handlers.  Also, because
8   of the three ABIs, gen-offsets.c can not quite generate this file.  */
9
10/* Offsets for MIPS Linux "ucontext_t":  */
11
12/* First 24 bytes in sigframe are argument save space and padding for
13what used to be signal trampolines. Ref: arch/mips/kernel/signal.c */
14#define LINUX_SF_TRAMP_SIZE 0x18
15
16#if _MIPS_SIM == _ABIO32
17
18# define LINUX_UC_FLAGS_OFF	0x0
19# define LINUX_UC_LINK_OFF	0x4
20# define LINUX_UC_STACK_OFF	0x8
21# define LINUX_UC_MCONTEXT_OFF	0x18
22# define LINUX_UC_SIGMASK_OFF	0x268
23# define LINUX_UC_MCONTEXT_PC	0x20
24# define LINUX_UC_MCONTEXT_GREGS	0x28
25
26#elif _MIPS_SIM == _ABIN32
27
28# define LINUX_UC_FLAGS_OFF	0x0
29# define LINUX_UC_LINK_OFF	0x4
30# define LINUX_UC_STACK_OFF	0x8
31# define LINUX_UC_MCONTEXT_OFF	0x18
32# define LINUX_UC_SIGMASK_OFF	0x270
33# define LINUX_UC_MCONTEXT_PC	0x258
34# define LINUX_UC_MCONTEXT_GREGS	0x18
35
36#elif _MIPS_SIM == _ABI64
37
38# define LINUX_UC_FLAGS_OFF	0x0
39# define LINUX_UC_LINK_OFF	0x8
40# define LINUX_UC_STACK_OFF	0x10
41# define LINUX_UC_MCONTEXT_OFF	0x28
42# define LINUX_UC_SIGMASK_OFF	0x280
43# define LINUX_UC_MCONTEXT_PC	0x268
44# define LINUX_UC_MCONTEXT_GREGS	0x28
45#else
46
47#error Unsupported ABI
48
49#endif
50
51#define LINUX_SC_R0_OFF   (LINUX_UC_MCONTEXT_GREGS - LINUX_UC_MCONTEXT_OFF)
52#define LINUX_SC_R1_OFF   (LINUX_SC_R0_OFF + 1*8)
53#define LINUX_SC_R2_OFF   (LINUX_SC_R0_OFF + 2*8)
54#define LINUX_SC_R3_OFF   (LINUX_SC_R0_OFF + 3*8)
55#define LINUX_SC_R4_OFF   (LINUX_SC_R0_OFF + 4*8)
56#define LINUX_SC_R5_OFF   (LINUX_SC_R0_OFF + 5*8)
57#define LINUX_SC_R6_OFF   (LINUX_SC_R0_OFF + 6*8)
58#define LINUX_SC_R7_OFF   (LINUX_SC_R0_OFF + 7*8)
59#define LINUX_SC_R8_OFF   (LINUX_SC_R0_OFF + 8*8)
60#define LINUX_SC_R9_OFF   (LINUX_SC_R0_OFF + 9*8)
61#define LINUX_SC_R10_OFF  (LINUX_SC_R0_OFF + 10*8)
62#define LINUX_SC_R11_OFF  (LINUX_SC_R0_OFF + 11*8)
63#define LINUX_SC_R12_OFF  (LINUX_SC_R0_OFF + 12*8)
64#define LINUX_SC_R13_OFF  (LINUX_SC_R0_OFF + 13*8)
65#define LINUX_SC_R14_OFF  (LINUX_SC_R0_OFF + 14*8)
66#define LINUX_SC_R15_OFF  (LINUX_SC_R0_OFF + 15*8)
67#define LINUX_SC_R16_OFF  (LINUX_SC_R0_OFF + 16*8)
68#define LINUX_SC_R17_OFF  (LINUX_SC_R0_OFF + 17*8)
69#define LINUX_SC_R18_OFF  (LINUX_SC_R0_OFF + 18*8)
70#define LINUX_SC_R19_OFF  (LINUX_SC_R0_OFF + 19*8)
71#define LINUX_SC_R20_OFF  (LINUX_SC_R0_OFF + 20*8)
72#define LINUX_SC_R21_OFF  (LINUX_SC_R0_OFF + 21*8)
73#define LINUX_SC_R22_OFF  (LINUX_SC_R0_OFF + 22*8)
74#define LINUX_SC_R23_OFF  (LINUX_SC_R0_OFF + 23*8)
75#define LINUX_SC_R24_OFF  (LINUX_SC_R0_OFF + 24*8)
76#define LINUX_SC_R25_OFF  (LINUX_SC_R0_OFF + 25*8)
77#define LINUX_SC_R26_OFF  (LINUX_SC_R0_OFF + 26*8)
78#define LINUX_SC_R27_OFF  (LINUX_SC_R0_OFF + 27*8)
79#define LINUX_SC_R28_OFF  (LINUX_SC_R0_OFF + 28*8)
80#define LINUX_SC_R29_OFF  (LINUX_SC_R0_OFF + 29*8)
81#define LINUX_SC_R30_OFF  (LINUX_SC_R0_OFF + 30*8)
82#define LINUX_SC_R31_OFF  (LINUX_SC_R0_OFF + 31*8)
83
84#define LINUX_SC_SP_OFF   LINUX_SC_R29_OFF
85#define LINUX_SC_PC_OFF   (LINUX_UC_MCONTEXT_PC - LINUX_UC_MCONTEXT_OFF)
86