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