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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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00ebfe58b0
The following patch defines sigcontext ABI of ColdFire. Due to ISA restrictions ColdFire needs different rt_sigreturn trampoline. And due to ColdFire FP registers being 8-bytes instead of 12-bytes on m68k, sigcontext and fpregset structures should be updated. Regarding the sc_fpstate[16+6*8] field, it would've been enough 16 bytes to store ColdFire's FP state. To accomodate GLIBC's libSegFault it would'be been enough 6*8 bytes (room for the 6 non-call-clobbered FP registers). I set it to 16+6*8 to provide some extra space for any future changes in the ColdFire FPU. Signed-off-by: Maxim Kuvyrkov <maxim@codesourcery.com> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
35 lines
586 B
C
35 lines
586 B
C
#ifndef _M68K_UCONTEXT_H
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#define _M68K_UCONTEXT_H
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typedef int greg_t;
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#define NGREG 18
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typedef greg_t gregset_t[NGREG];
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typedef struct fpregset {
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int f_fpcntl[3];
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#ifdef __mcoldfire__
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int f_fpregs[8][2];
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#else
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int f_fpregs[8*3];
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#endif
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} fpregset_t;
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struct mcontext {
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int version;
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gregset_t gregs;
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fpregset_t fpregs;
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};
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#define MCONTEXT_VERSION 2
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struct ucontext {
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unsigned long uc_flags;
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struct ucontext *uc_link;
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stack_t uc_stack;
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struct mcontext uc_mcontext;
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unsigned long uc_filler[80];
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sigset_t uc_sigmask; /* mask last for extensibility */
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};
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#endif
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