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/*
* setjmp and longjmp, but our own because some (stupid) c libraries
* assume longjmp is only used to move up the stack, and error out
* if you do otherwise.
*/
typedef struct Label Label;
#define LABELDPC 0
#if defined(__linux__)
#include <ucontext.h>
struct Label
{
ucontext_t uc;
};
#elif defined (__i386__) && (defined(__FreeBSD__) || defined(__linux__) || defined(__OpenBSD__))
struct Label
{
ulong pc;
ulong bx;
ulong sp;
ulong bp;
ulong si;
ulong di;
};
#elif defined(__APPLE__)
struct Label
{
ulong pc; /* lr */
ulong cr; /* mfcr */
ulong ctr; /* mfcr */
ulong xer; /* mfcr */
ulong sp; /* callee saved: r1 */
ulong toc; /* callee saved: r2 */
ulong gpr[19]; /* callee saved: r13-r31 */
// XXX: currently do not save vector registers or floating-point state
// ulong pad;
// uvlong fpr[18]; /* callee saved: f14-f31 */
// ulong vr[4*12]; /* callee saved: v20-v31, 256-bits each */
};
#elif defined(__sun__)
struct Label
{
ulong input[8]; /* %i registers */
ulong local[8]; /* %l registers */
ulong sp; /* %o6 */
ulong link; /* %o7 */
};
#elif defined(__powerpc__)
struct Label
{
ulong pc; /* lr */
ulong cr; /* mfcr */
ulong ctr; /* mfcr */
ulong xer; /* mfcr */
ulong sp; /* callee saved: r1 */
ulong toc; /* callee saved: r2 */
ulong gpr[19]; /* callee saved: r13-r31 */
// XXX: currently do not save vector registers or floating-point state
// ulong pad;
// uvlong fpr[18]; /* callee saved: f14-f31 */
// ulong vr[4*12]; /* callee saved: v20-v31, 256-bits each */
};
#else
#error "Unknown or unsupported architecture"
#endif
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