46 lines
1.2 KiB
Diff
46 lines
1.2 KiB
Diff
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Reported-by: Dark Raven <drdarkraven at gmail.com>
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Signed-off-by: Raphael S. Carvalho <raphael.scarv at gmail.com>
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---
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com32/lib/syslinux/disk.c | 22 ++++++++++++++--------
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1 files changed, 14 insertions(+), 8 deletions(-)
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--- com32/lib/syslinux/disk.c
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+++ com32/lib/syslinux/disk.c
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@@ -171,22 +171,28 @@ out:
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static void *ebios_setup(const struct disk_info *const diskinfo, com32sys_t *inreg,
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uint64_t lba, uint8_t count, uint8_t op_code)
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{
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- static __lowmem struct disk_ebios_dapa dapa;
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+ static struct disk_ebios_dapa *dapa = NULL;
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void *buf;
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+ if (!dapa) {
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+ dapa = lmalloc(sizeof *dapa);
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+ if (!dapa)
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+ return NULL;
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+ }
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+
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buf = lmalloc(count * diskinfo->bps);
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if (!buf)
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return NULL;
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- dapa.len = sizeof(dapa);
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- dapa.count = count;
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- dapa.off = OFFS(buf);
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- dapa.seg = SEG(buf);
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- dapa.lba = lba;
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+ dapa->len = sizeof(*dapa);
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+ dapa->count = count;
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+ dapa->off = OFFS(buf);
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+ dapa->seg = SEG(buf);
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+ dapa->lba = lba;
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inreg->eax.b[1] = op_code;
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- inreg->esi.w[0] = OFFS(&dapa);
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- inreg->ds = SEG(&dapa);
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+ inreg->esi.w[0] = OFFS(dapa);
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+ inreg->ds = SEG(dapa);
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inreg->edx.b[0] = diskinfo->disk;
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return buf;
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