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https://github.com/tobast/libunwind-eh_elf.git
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79c2c254a7
Add MIPS support to the coredump library. Explicit support for the MIPS program counter register is added so that we can start backtracing from the program counter value we read from a core dump. The PC register support was not strictly required for local backtracing, and we will in fact just plug the return address to the PC register in getcontext(). I have only tested the 32bit "OABI" paths.
43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
/* Linux-specific definitions: */
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/* Define various structure offsets to simplify cross-compilation. */
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/* FIXME: Currently these are only used in getcontext.S, which is only used
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for a local unwinder, so we can use the compile-time ABI. At a later date
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we will want all three here, to use for signal handlers. Also, because
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of the three ABIs, gen-offsets.c can not quite generate this file. */
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/* Offsets for MIPS Linux "ucontext_t": */
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#if _MIPS_SIM == _ABIO32
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# define LINUX_UC_FLAGS_OFF 0x0
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# define LINUX_UC_LINK_OFF 0x4
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# define LINUX_UC_STACK_OFF 0x8
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# define LINUX_UC_MCONTEXT_OFF 0x18
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# define LINUX_UC_SIGMASK_OFF 0x268
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# define LINUX_UC_MCONTEXT_PC 0x20
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# define LINUX_UC_MCONTEXT_GREGS 0x28
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#elif _MIPS_SIM == _ABIN32
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# define LINUX_UC_FLAGS_OFF 0x0
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# define LINUX_UC_LINK_OFF 0x4
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# define LINUX_UC_STACK_OFF 0x8
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# define LINUX_UC_MCONTEXT_OFF 0x18
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# define LINUX_UC_SIGMASK_OFF 0x270
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# define LINUX_UC_MCONTEXT_PC 0x258
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# define LINUX_UC_MCONTEXT_GREGS 0x18
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#elif _MIPS_SIM == _ABI64
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# define LINUX_UC_FLAGS_OFF 0x0
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# define LINUX_UC_LINK_OFF 0x8
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# define LINUX_UC_STACK_OFF 0x10
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# define LINUX_UC_MCONTEXT_OFF 0x28
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# define LINUX_UC_SIGMASK_OFF 0x280
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# define LINUX_UC_MCONTEXT_PC 0x268
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# define LINUX_UC_MCONTEXT_GREGS 0x28
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#endif
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