From ba7651fba54199e5dedbbd08157687291b9dbae3 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Wed, 25 Jan 2017 10:54:11 -0800 Subject: target/xtensa: add linux-user support Import list of syscalls from the kernel source. Conditionalize code/data that is only used with softmmu. Implement exception handlers. Implement signal hander (only the core registers for now, no coprocessors or TIE). Cc: Riku Voipio Cc: Laurent Vivier Signed-off-by: Max Filippov --- linux-user/xtensa/target_signal.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 linux-user/xtensa/target_signal.h (limited to 'linux-user/xtensa/target_signal.h') diff --git a/linux-user/xtensa/target_signal.h b/linux-user/xtensa/target_signal.h new file mode 100644 index 0000000000..c6962e70af --- /dev/null +++ b/linux-user/xtensa/target_signal.h @@ -0,0 +1,28 @@ +#ifndef XTENSA_TARGET_SIGNAL_H +#define XTENSA_TARGET_SIGNAL_H + +#include "cpu.h" + +/* this struct defines a stack used during syscall handling */ + +typedef struct target_sigaltstack { + abi_ulong ss_sp; + abi_int ss_flags; + abi_ulong ss_size; +} target_stack_t; + +/* + * sigaltstack controls + */ +#define TARGET_SS_ONSTACK 1 +#define TARGET_SS_DISABLE 2 + +#define TARGET_MINSIGSTKSZ 2048 +#define TARGET_SIGSTKSZ 8192 + +static inline abi_ulong get_sp_from_cpustate(CPUXtensaState *state) +{ + return state->regs[1]; +} + +#endif -- cgit v1.2.3