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| author | Erwan Velu <erwan@enovance.com> | 2014-01-22 23:57:12 +0100 |
|---|---|---|
| committer | Erwan Velu <erwan@enovance.com> | 2014-01-22 23:57:12 +0100 |
| commit | 3150c7839640859e8ec6ea0243002309e5f9c068 (patch) | |
| tree | 275ff162a0252960548013afbe8ff7da7e9cffc0 /com32/sysdump/memmap.c | |
| parent | 7a9978f280e1d291f6fac419e7c2a0178e9e5d6b (diff) | |
| download | syslinux-3150c7839640859e8ec6ea0243002309e5f9c068.tar.gz syslinux-3150c7839640859e8ec6ea0243002309e5f9c068.tar.xz syslinux-3150c7839640859e8ec6ea0243002309e5f9c068.zip | |
com32sys_t inreg shall be zeroified prior intcall
As per commit f775e740a3a817a4ff5ba26bea99dbfd735456b3, inreg parameters
of intcall() shall be zeroified.
Having unclean inreg could trigger bad behaviors on some hosts.
This patch is about adding memset() calls prior any intcall() :
- some intcall didn't had any memset at all
- some successive intcall() calls didn't memset inreg in between calls
Diffstat (limited to 'com32/sysdump/memmap.c')
| -rw-r--r-- | com32/sysdump/memmap.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/com32/sysdump/memmap.c b/com32/sysdump/memmap.c index 929873fe..48241a7a 100644 --- a/com32/sysdump/memmap.c +++ b/com32/sysdump/memmap.c @@ -72,10 +72,12 @@ void dump_memory_map(struct upload_backend *be) __intcall(0x12, &ireg, &oreg); cpio_writefile(be, "memmap/12", &oreg, sizeof oreg); + memset(&ireg, 0, sizeof ireg); ireg.eax.b[1] = 0x88; __intcall(0x15, &ireg, &oreg); cpio_writefile(be, "memmap/1588", &oreg, sizeof oreg); + memset(&ireg, 0, sizeof ireg); ireg.eax.w[0] = 0xe801; __intcall(0x15, &ireg, &oreg); cpio_writefile(be, "memmap/15e801", &oreg, sizeof oreg); |