diff options
Diffstat (limited to 'mcon/U/d_uctx_mctx_gregs.U')
| -rw-r--r-- | mcon/U/d_uctx_mctx_gregs.U | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/mcon/U/d_uctx_mctx_gregs.U b/mcon/U/d_uctx_mctx_gregs.U new file mode 100644 index 0000000..bfd07a0 --- /dev/null +++ b/mcon/U/d_uctx_mctx_gregs.U @@ -0,0 +1,44 @@ +?RCS: +?RCS: Copyright (c) 2012 Raphael Manfredi +?RCS: +?RCS: You may redistribute only under the terms of the Artistic License, +?RCS: as specified in the README file that comes with the distribution. +?RCS: You may reuse parts of this distribution only within the terms of +?RCS: that same Artistic License; a copy of which may be found at the root +?RCS: of the source tree for dist 4.0. +?RCS: +?MAKE:d_uctx_mctx_gregs: Trylink cat i_ucontext i_sys_ucontext +?MAKE: -pick add $@ %< +?S:d_uctx_mctx_gregs: +?S: This variable conditionally defines the HAS_UCONTEXT_MCONTEXT_GREGS symbol, +?S: which indicates to the C program that it can access general registers +?S: through ucontext->uc_mcontext.gregs[]. +?S:. +?C:HAS_UCONTEXT_MCONTEXT_GREGS: +?C: This symbol, if defined, indicates that the C program can access the +?C: processor's general registers through the gregs[] array in the uc_mcontext +?C: machine context field from the ucontext_t structure. +?C:. +?H:#$d_uctx_mctx_gregs HAS_UCONTEXT_MCONTEXT_GREGS /**/ +?H:. +?LINT:set d_uctx_mctx_gregs +: check for general register access through the ucontext structure +$cat >try.c <<EOC +#$i_ucontext I_UCONTEXT +#$i_sys_ucontext I_SYS_UCONTEXT +#ifdef I_UCONTEXT +#include <ucontext.h> +#endif +#ifdef I_SYS_UCONTEXT +#include <sys/ucontext.h> +#endif +int main(void) +{ + static ucontext_t uc; + return uc.uc_mcontext.gregs[0]; +} +EOC +cyn="whether 'struct ucontext' has a 'mcontext.gregs[]' member" +set d_uctx_mctx_gregs +eval $trylink + |