65 lines
2.2 KiB
C
65 lines
2.2 KiB
C
/****************************************************************
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* *
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* Copyright 2001, 2009 Fidelity Information Services, Inc *
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* *
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* This source code contains the intellectual property *
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* of its copyright holder(s), and is made available *
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* under a license. If you do not know the terms of *
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* the license, please stop and do not read further. *
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* *
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****************************************************************/
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#include "mdef.h"
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#include "gtm_string.h"
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#include "op.h"
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#include <rtnhdr.h>
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#include "stack_frame.h"
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#include "gtmci.h"
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#include "svnames.h"
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#include "gtm_savetraps.h"
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#include "error_trap.h"
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#include "mv_stent.h"
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GBLREF dollar_ecode_type dollar_ecode;
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GBLREF dollar_stack_type dollar_stack;
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GBLREF stack_frame *frame_pointer;
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static dollar_ecode_type dollar_ecode_ci;
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static dollar_stack_type dollar_stack_ci;
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static dollar_ecode_type *dollar_ecode_addr;
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static dollar_stack_type *dollar_stack_addr;
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void gtmci_isv_save(void)
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{
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gtm_savetraps(); /* Save either etrap or ztrap as appropriate */
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op_newintrinsic(SV_ESTACK);
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/* Save $ECODE/$STACK values of previous environment into SFF_CI frame of
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* the current call-in environment. When this frame unwinds, their old values
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* will be restored in dollar_ecode_ci and dollar_stack_ci (see unwind logic
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* in ci_ret_code_quit) */
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assert(frame_pointer->flags & SFF_CI);
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dollar_ecode_addr = &dollar_ecode_ci;
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push_stck(&dollar_ecode, SIZEOF(dollar_ecode), (void**)&dollar_ecode_addr, MVST_STCK);
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dollar_stack_addr = &dollar_stack_ci;
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push_stck(&dollar_stack, SIZEOF(dollar_stack), (void**)&dollar_stack_addr, MVST_STCK);
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ecode_init();
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}
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void gtmci_isv_restore(void)
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{
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/* free the allocated $ECODE/$STACK storage before exiting from the current
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* call-in environment. NOTE: any changes here should be reflected in ecode_init() */
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if (dollar_ecode.begin)
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free(dollar_ecode.begin);
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if (dollar_ecode.array)
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free(dollar_ecode.array);
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if (dollar_stack.begin)
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free(dollar_stack.begin);
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if (dollar_stack.array)
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free(dollar_stack.array);
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/* Restore the old values from dollar_ecode_ci and dollar_stack_ci */
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memcpy(&dollar_ecode, &dollar_ecode_ci, SIZEOF(dollar_ecode));
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memcpy(&dollar_stack, &dollar_stack_ci, SIZEOF(dollar_stack));
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}
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