nasm/output/legacy.c

/* ----------------------------------------------------------------------- *
 *
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 *   See the file AUTHORS included with the NASM distribution for
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/*
 * output/legacy.c
 *
 * Mangle a struct out_data to match the rather bizarre legacy
 * backend interface.
 */

#include "nasm.h"
#include "outlib.h"

void nasm_do_legacy_output(const struct out_data *data)
{
    const void *dptr = data->data;
    enum out_type type = data->type;
    int32_t tsegment = data->tsegment;
    int32_t twrt = data->twrt;
    uint64_t size = data->size;

    switch (data->type) {
    case OUT_RELADDR:
        switch (data->size) {
        case 1:
            type = OUT_REL1ADR;
            break;
        case 2:
            type = OUT_REL2ADR;
            break;
        case 4:
            type = OUT_REL4ADR;
            break;
        case 8:
            type = OUT_REL8ADR;
            break;
        default:
            panic();
            break;
        }

        dptr = &data->toffset;
        size = data->inslen - data->insoffs;
        break;

    case OUT_SEGMENT:
        type = OUT_ADDRESS;
        /* fall through */

    case OUT_ADDRESS:
        dptr = &data->toffset;
        size = (data->sign == OUT_SIGNED) ? -data->size : data->size;
        break;

    case OUT_RAWDATA:
    case OUT_RESERVE:
        tsegment = twrt = NO_SEG;
        break;

    default:
        panic();
        break;
    }

    ofmt->legacy_output(data->segment, dptr, type, size, tsegment, twrt);
}