diff options
author | Max Filippov <jcmvbkbc@gmail.com> | 2017-01-25 10:54:11 -0800 |
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committer | Max Filippov <jcmvbkbc@gmail.com> | 2018-03-16 09:40:34 -0700 |
commit | ba7651fba54199e5dedbbd08157687291b9dbae3 (patch) | |
tree | f03b970e3cfdfde9040ff14c59dc0bf3acfb6fe3 /linux-user/xtensa/target_signal.h | |
parent | bf9c3a5a96dfabcdcb7964110866bb9bc06a43c1 (diff) |
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 <riku.voipio@iki.fi>
Cc: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'linux-user/xtensa/target_signal.h')
-rw-r--r-- | linux-user/xtensa/target_signal.h | 28 |
1 files changed, 28 insertions, 0 deletions
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 |