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Re-enable raw dump format support on i386 and amd64 for /dev/fwmem.

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This commit is contained in:
Hidetoshi Shimokawa 2007-06-15 11:35:11 +00:00
parent b1cf245735
commit d7dc9f7649
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=170772
4 changed files with 39 additions and 18 deletions
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2
lib/libkvm/kvm.c
View File

@ -219,6 +219,8 @@ _kvm_open(kd, uf, mf, flag, errout)
_kvm_syserr(kd, kd->program, "%s", uf);
goto failed;
}
if (strncmp(mf, _PATH_FWMEM, strlen(_PATH_FWMEM)) == 0)
kd->rawdump = 1;
if (_kvm_initvtop(kd) < 0)
goto failed;
return (kd);

27
lib/libkvm/kvm_amd64.c
View File

@ -110,9 +110,16 @@ static size_t
_kvm_pa2off(kvm_t *kd, uint64_t pa, off_t *ofs)
{
Elf_Ehdr *e = kd->vmst->mmapbase;
Elf_Phdr *p = (Elf_Phdr*)((char*)e + e->e_phoff);
int n = e->e_phnum;
Elf_Phdr *p;
int n;
if (kd->rawdump) {
*ofs = pa;
return (PAGE_SIZE - ((size_t)pa & PAGE_MASK));
}
p = (Elf_Phdr*)((char*)e + e->e_phoff);
n = e->e_phnum;
while (n && (pa < p->p_paddr || pa >= p->p_paddr + p->p_memsz))
p++, n--;
if (n == 0)
@ -147,7 +154,7 @@ _kvm_initvtop(kvm_t *kd)
size_t hdrsz;
char minihdr[8];
if (pread(kd->pmfd, &minihdr, 8, 0) == 8)
if (!kd->rawdump && pread(kd->pmfd, &minihdr, 8, 0) == 8)
if (memcmp(&minihdr, "minidump", 8) == 0)
return (_kvm_minidump_initvtop(kd));
@ -158,13 +165,15 @@ _kvm_initvtop(kvm_t *kd)
}
kd->vmst->PML4 = 0;
if (_kvm_maphdrs(kd, sizeof(Elf_Ehdr)) == -1)
return (-1);
if (kd->rawdump == 0) {
if (_kvm_maphdrs(kd, sizeof(Elf_Ehdr)) == -1)
return (-1);
ehdr = kd->vmst->mmapbase;
hdrsz = ehdr->e_phoff + ehdr->e_phentsize * ehdr->e_phnum;
if (_kvm_maphdrs(kd, hdrsz) == -1)
return (-1);
ehdr = kd->vmst->mmapbase;
hdrsz = ehdr->e_phoff + ehdr->e_phentsize * ehdr->e_phnum;
if (_kvm_maphdrs(kd, hdrsz) == -1)
return (-1);
}
nlist[0].n_name = "kernbase";
nlist[1].n_name = 0;

27
lib/libkvm/kvm_i386.c
View File

@ -116,9 +116,16 @@ static size_t
_kvm_pa2off(kvm_t *kd, uint64_t pa, off_t *ofs)
{
Elf_Ehdr *e = kd->vmst->mmapbase;
Elf_Phdr *p = (Elf_Phdr*)((char*)e + e->e_phoff);
int n = e->e_phnum;
Elf_Phdr *p;
int n;
if (kd->rawdump) {
*ofs = pa;
return (PAGE_SIZE - ((size_t)pa & PAGE_MASK));
}
p = (Elf_Phdr*)((char*)e + e->e_phoff);
n = e->e_phnum;
while (n && (pa < p->p_paddr || pa >= p->p_paddr + p->p_memsz))
p++, n--;
if (n == 0)
@ -154,7 +161,7 @@ _kvm_initvtop(kvm_t *kd)
int i;
char minihdr[8];
if (pread(kd->pmfd, &minihdr, 8, 0) == 8)
if (!kd->rawdump && pread(kd->pmfd, &minihdr, 8, 0) == 8)
if (memcmp(&minihdr, "minidump", 8) == 0)
return (_kvm_minidump_initvtop(kd));
@ -165,13 +172,15 @@ _kvm_initvtop(kvm_t *kd)
}
kd->vmst->PTD = 0;
if (_kvm_maphdrs(kd, sizeof(Elf_Ehdr)) == -1)
return (-1);
if (kd->rawdump == 0) {
if (_kvm_maphdrs(kd, sizeof(Elf_Ehdr)) == -1)
return (-1);
ehdr = kd->vmst->mmapbase;
hdrsz = ehdr->e_phoff + ehdr->e_phentsize * ehdr->e_phnum;
if (_kvm_maphdrs(kd, hdrsz) == -1)
return (-1);
ehdr = kd->vmst->mmapbase;
hdrsz = ehdr->e_phoff + ehdr->e_phentsize * ehdr->e_phnum;
if (_kvm_maphdrs(kd, hdrsz) == -1)
return (-1);
}
nlist[0].n_name = "kernbase";
nlist[1].n_name = 0;

1
lib/libkvm/kvm_private.h
View File

@ -61,6 +61,7 @@ struct __kvm {
* only allocate it if necessary.
*/
struct vmstate *vmst;
int rawdump; /* raw dump format */
};
/*