68 lines
2.5 KiB
C
68 lines
2.5 KiB
C
/****************************************************************
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* *
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* Copyright 2001, 2012 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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#if defined (__alpha) && defined (__vms)
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#include "pdscdef.h"
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#include "proc_desc.h"
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#endif
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#include "cmd_qlf.h"
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#include <rtnhdr.h>
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#include "zbreak.h"
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error_def(ERR_LABELMISSING);
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error_def(ERR_LABELONLY);
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error_def(ERR_OFFSETINV);
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USHBIN_ONLY(lnr_tabent **) NON_USHBIN_ONLY(lnr_tabent *)op_labaddr(rhdtyp *routine, mval *label, int4 offset)
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{
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rhdtyp *real_routine, *routine_hdr;
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lnr_tabent *answer, *first_line;
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DCL_THREADGBL_ACCESS;
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SETUP_THREADGBL_ACCESS;
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MV_FORCE_STR(label);
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# if defined (__alpha) && defined (__vms)
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if (PDSC_FLAGS == ((proc_desc *)routine)->flags) /* it's a procedure descriptor, not a routine header */
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{
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routine_hdr = (rhdtyp *)(((proc_desc *)routine)->code_address);
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/* Make sure this if-test is sufficient to distinguish between procedure descriptors and routine headers */
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assert(PDSC_FLAGS != ((proc_desc *)routine_hdr)->flags);
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} else
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# endif
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routine_hdr = routine;
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if (!(routine_hdr->compiler_qlf & CQ_LINE_ENTRY) && (0 != offset))
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rts_error(VARLSTCNT(4) ERR_LABELONLY, 2, routine_hdr->routine_name.len, routine_hdr->routine_name.addr);
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answer = find_line_addr(routine_hdr, &label->str, 0, NULL);
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if (NULL == answer)
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rts_error(VARLSTCNT(4) ERR_LABELMISSING, 2, label->str.len, label->str.addr);
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real_routine = CURRENT_RHEAD_ADR(routine_hdr);
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first_line = LNRTAB_ADR(real_routine);
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answer += offset;
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if ((answer < first_line) || (answer >= (first_line + real_routine->lnrtab_len)))
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rts_error(VARLSTCNT(5) ERR_OFFSETINV, 3, label->str.len, label->str.addr, offset);
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/* Return the address for line number entry pointer/offset, so that the adjacent location in memory holds has_parms. */
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USHBIN_ONLY(
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(TREF(lab_proxy)).lnr_adr = answer;
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return &((TREF(lab_proxy)).lnr_adr);
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);
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NON_USHBIN_ONLY(
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/* On non-shared-binary, calculate the offset to the corresponding lnr_tabent record by subtracting
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* the base address (routine header) from line number entry's address, and save the result in
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* lab_ln_ptr field of lab_tabent structure.
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*/
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(TREF(lab_proxy)).lab_ln_ptr = (int4)answer - (int4)real_routine;
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return &((TREF(lab_proxy)).lab_ln_ptr);
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);
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}
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