overlay/mgdb/gdb/amd64-winnt-regcache.c


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/***************************************************************/
/*  mgdb: midipix-specific bits for gdb                        */
/*  Copyright (C) 2019  Z. Gilboa                              */
/*  Released under GPLv2 and GPLv3; see COPYING.MGDB.          */
/***************************************************************/

#include "defs.h"
#include "osabi.h"
#include "regcache.h"
#include "amd64-tdep.h"

#include <signal.h>
#include <sys/debug.h>

struct regcache;

static void amd64_winnt_supply_reg(
	struct regcache * rcache,
	int regnum, uintptr_t regval)
{
	regcache_raw_supply(rcache,regnum,&regval);
}

static void amd64_winnt_supply_pc_regs(
	struct regcache * rcache,
	mcontext_t * regctx)
{
	amd64_winnt_supply_reg(rcache,AMD64_RIP_REGNUM,regctx->uc_rip);
}

int amd64_winnt_fetch_registers(
	int pfd, struct regcache * rcache,
	int regnum, pid_t tid)
{
	int ret;
	mcontext_t regctx;

	if ((ret = __dbg_regs_fetch(pfd,tid,&regctx)) < 0)
		return ret;

	if (regnum == AMD64_RIP_REGNUM)
		amd64_winnt_supply_pc_regs(rcache,&regctx);

	return 0;
}