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dbghelp: Use vtbl to handle different image_file_map types. 

Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Jacek Caban 2020-03-16 16:05:39 +01:00 committed by Alexandre Julliard
parent 02dfd959ca
commit 95a5f82961
4 changed files with 62 additions and 126 deletions
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44
dlls/dbghelp/elf_module.c
View File

@ -134,7 +134,7 @@ struct elf_module_info
*
* Maps a single section into memory from an ELF file
*/
const char* elf_map_section(struct image_section_map* ism)
static const char* elf_map_section(struct image_section_map* ism)
{
struct elf_file_map* fmap = &ism->fmap->u.elf;
SYSTEM_INFO sysinfo;
@ -176,7 +176,7 @@ const char* elf_map_section(struct image_section_map* ism)
* Finds a section by name (and type) into memory from an ELF file
* or its alternate if any
*/
BOOL elf_find_section(struct image_file_map* _fmap, const char* name, struct image_section_map* ism)
static BOOL elf_find_section(struct image_file_map* _fmap, const char* name, struct image_section_map* ism)
{
struct elf_file_map* fmap = &_fmap->u.elf;
unsigned i;
@ -233,7 +233,7 @@ static BOOL elf_find_section_type(struct image_file_map* _fmap, const char* name
*
* Unmaps a single section from memory
*/
void elf_unmap_section(struct image_section_map* ism)
static void elf_unmap_section(struct image_section_map* ism)
{
struct elf_file_map* fmap = &ism->fmap->u.elf;
@ -265,7 +265,7 @@ static void elf_end_find(struct image_file_map* fmap)
*
* Get the RVA of an ELF section
*/
DWORD_PTR elf_get_map_rva(const struct image_section_map* ism)
static DWORD_PTR elf_get_map_rva(const struct image_section_map* ism)
{
if (ism->sidx < 0 || ism->sidx >= ism->fmap->u.elf.elfhdr.e_shnum)
return 0;
@ -277,15 +277,25 @@ DWORD_PTR elf_get_map_rva(const struct image_section_map* ism)
*
* Get the size of an ELF section
*/
unsigned elf_get_map_size(const struct image_section_map* ism)
static unsigned elf_get_map_size(const struct image_section_map* ism)
{
if (ism->sidx < 0 || ism->sidx >= ism->fmap->u.elf.elfhdr.e_shnum)
return 0;
return ism->fmap->u.elf.sect[ism->sidx].shdr.sh_size;
}
static const struct image_file_map_ops elf_file_map_ops =
{
elf_map_section,
elf_unmap_section,
elf_find_section,
elf_get_map_rva,
elf_get_map_size,
};
static inline void elf_reset_file_map(struct image_file_map* fmap)
{
fmap->ops = &elf_file_map_ops;
fmap->alternate = NULL;
fmap->u.elf.handle = INVALID_HANDLE_VALUE;
fmap->u.elf.shstrtab = IMAGE_NO_MAP;
@ -2036,30 +2046,6 @@ BOOL elf_synchronize_module_list(struct process* pcs)
#else /* !__ELF__ */
BOOL elf_find_section(struct image_file_map* fmap, const char* name,
struct image_section_map* ism)
{
return FALSE;
}
const char* elf_map_section(struct image_section_map* ism)
{
return NULL;
}
void elf_unmap_section(struct image_section_map* ism)
{}
unsigned elf_get_map_size(const struct image_section_map* ism)
{
return 0;
}
DWORD_PTR elf_get_map_rva(const struct image_section_map* ism)
{
return 0;
}
BOOL elf_synchronize_module_list(struct process* pcs)
{
return FALSE;

79
dlls/dbghelp/image_private.h
View File

@ -60,6 +60,7 @@
struct image_file_map
{
enum module_type modtype;
const struct image_file_map_ops *ops;
unsigned addr_size; /* either 16 (not used), 32 or 64 */
struct image_file_map* alternate; /* another file linked to this one */
union
@ -129,45 +130,21 @@ struct image_section_map
long sidx;
};
extern BOOL elf_find_section(struct image_file_map* fmap, const char* name,
struct image_section_map* ism) DECLSPEC_HIDDEN;
extern const char* elf_map_section(struct image_section_map* ism) DECLSPEC_HIDDEN;
extern void elf_unmap_section(struct image_section_map* ism) DECLSPEC_HIDDEN;
extern DWORD_PTR elf_get_map_rva(const struct image_section_map* ism) DECLSPEC_HIDDEN;
extern unsigned elf_get_map_size(const struct image_section_map* ism) DECLSPEC_HIDDEN;
extern BOOL macho_find_section(struct image_file_map* ifm, const char* segname,
const char* sectname, struct image_section_map* ism) DECLSPEC_HIDDEN;
extern const char* macho_map_section(struct image_section_map* ism) DECLSPEC_HIDDEN;
extern void macho_unmap_section(struct image_section_map* ism) DECLSPEC_HIDDEN;
extern DWORD_PTR macho_get_map_rva(const struct image_section_map* ism) DECLSPEC_HIDDEN;
extern unsigned macho_get_map_size(const struct image_section_map* ism) DECLSPEC_HIDDEN;
extern BOOL pe_find_section(struct image_file_map* fmap, const char* name,
struct image_section_map* ism) DECLSPEC_HIDDEN;
extern const char* pe_map_section(struct image_section_map* psm) DECLSPEC_HIDDEN;
extern void pe_unmap_section(struct image_section_map* psm) DECLSPEC_HIDDEN;
extern DWORD_PTR pe_get_map_rva(const struct image_section_map* psm) DECLSPEC_HIDDEN;
extern unsigned pe_get_map_size(const struct image_section_map* psm) DECLSPEC_HIDDEN;
struct image_file_map_ops
{
const char* (*map_section)(struct image_section_map* ism);
void (*unmap_section)(struct image_section_map* ism);
BOOL (*find_section)(struct image_file_map* fmap, const char* name, struct image_section_map* ism);
DWORD_PTR (*get_map_rva)(const struct image_section_map* ism);
unsigned (*get_map_size)(const struct image_section_map* ism);
};
static inline BOOL image_find_section(struct image_file_map* fmap, const char* name,
struct image_section_map* ism)
{
while (fmap)
{
switch (fmap->modtype)
{
case DMT_ELF:
if (elf_find_section(fmap, name, ism)) return TRUE;
break;
case DMT_MACHO:
if (macho_find_section(fmap, NULL, name, ism)) return TRUE;
break;
case DMT_PE:
if (pe_find_section(fmap, name, ism)) return TRUE;
break;
default: assert(0); return FALSE;
}
if (fmap->ops->find_section(fmap, name, ism)) return TRUE;
fmap = fmap->alternate;
}
ism->fmap = NULL;
@ -177,48 +154,20 @@ static inline BOOL image_find_section(struct image_file_map* fmap, const char* n
static inline const char* image_map_section(struct image_section_map* ism)
{
if (!ism->fmap) return NULL;
switch (ism->fmap->modtype)
{
case DMT_ELF: return elf_map_section(ism);
case DMT_MACHO: return macho_map_section(ism);
case DMT_PE: return pe_map_section(ism);
default: assert(0); return NULL;
}
return ism->fmap ? ism->fmap->ops->map_section(ism) : NULL;
}
static inline void image_unmap_section(struct image_section_map* ism)
{
if (!ism->fmap) return;
switch (ism->fmap->modtype)
{
case DMT_ELF: elf_unmap_section(ism); break;
case DMT_MACHO: macho_unmap_section(ism); break;
case DMT_PE: pe_unmap_section(ism); break;
default: assert(0); return;
}
if (ism->fmap) ism->fmap->ops->unmap_section(ism);
}
static inline DWORD_PTR image_get_map_rva(const struct image_section_map* ism)
{
if (!ism->fmap) return 0;
switch (ism->fmap->modtype)
{
case DMT_ELF: return elf_get_map_rva(ism);
case DMT_MACHO: return macho_get_map_rva(ism);
case DMT_PE: return pe_get_map_rva(ism);
default: assert(0); return 0;
}
return ism->fmap ? ism->fmap->ops->get_map_rva(ism) : 0;
}
static inline unsigned image_get_map_size(const struct image_section_map* ism)
{
if (!ism->fmap) return 0;
switch (ism->fmap->modtype)
{
case DMT_ELF: return elf_get_map_size(ism);
case DMT_MACHO: return macho_get_map_size(ism);
case DMT_PE: return pe_get_map_size(ism);
default: assert(0); return 0;
}
return ism->fmap ? ism->fmap->ops->get_map_size(ism) : 0;
}

41
dlls/dbghelp/macho_module.c
View File

@ -332,7 +332,7 @@ static void macho_unmap_ranges(const struct macho_file_map* fmap,
/******************************************************************
* macho_find_section
*/
BOOL macho_find_section(struct image_file_map* ifm, const char* segname, const char* sectname, struct image_section_map* ism)
static BOOL macho_find_segment_section(struct image_file_map* ifm, const char* segname, const char* sectname, struct image_section_map* ism)
{
struct macho_file_map* fmap;
unsigned i;
@ -369,6 +369,11 @@ BOOL macho_find_section(struct image_file_map* ifm, const char* segname, const c
return FALSE;
}
static BOOL macho_find_section(struct image_file_map* ifm, const char* sectname, struct image_section_map* ism)
{
return macho_find_segment_section(ifm, NULL, sectname, ism);
}
/******************************************************************
* macho_map_section
*/
@ -420,6 +425,15 @@ unsigned macho_get_map_size(const struct image_section_map* ism)
return ism->fmap->u.macho.sect[ism->sidx].section.size;
}
static const struct image_file_map_ops macho_file_map_ops =
{
macho_map_section,
macho_unmap_section,
macho_find_section,
macho_get_map_rva,
macho_get_map_size,
};
/******************************************************************
* macho_map_load_commands
*
@ -680,6 +694,7 @@ static BOOL macho_map_file(struct process *pcs, const WCHAR *filenameW,
reset_file_map(ifm);
ifm->modtype = DMT_MACHO;
ifm->ops = &macho_file_map_ops;
ifm->alternate = NULL;
ifm->addr_size = (pcs->is_64bit) ? 64 : 32;
fmap->header_size = (pcs->is_64bit) ? sizeof(struct mach_header_64) : sizeof(struct mach_header);
@ -1998,30 +2013,6 @@ struct module* macho_load_module(struct process* pcs, const WCHAR* name, unsign
#else /* HAVE_MACH_O_LOADER_H */
BOOL macho_find_section(struct image_file_map* ifm, const char* segname, const char* sectname, struct image_section_map* ism)
{
return FALSE;
}
const char* macho_map_section(struct image_section_map* ism)
{
return NULL;
}
void macho_unmap_section(struct image_section_map* ism)
{
}
DWORD_PTR macho_get_map_rva(const struct image_section_map* ism)
{
return 0;
}
unsigned macho_get_map_size(const struct image_section_map* ism)
{
return 0;
}
BOOL macho_synchronize_module_list(struct process* pcs)
{
return FALSE;

24
dlls/dbghelp/pe_module.c
View File

@ -73,7 +73,7 @@ static void pe_unmap_full(struct image_file_map* fmap)
*
* Maps a single section into memory from an PE file
*/
const char* pe_map_section(struct image_section_map* ism)
static const char* pe_map_section(struct image_section_map* ism)
{
void* mapping;
struct pe_file_map* fmap = &ism->fmap->u.pe;
@ -111,8 +111,8 @@ const char* pe_map_section(struct image_section_map* ism)
* Finds a section by name (and type) into memory from an PE file
* or its alternate if any
*/
BOOL pe_find_section(struct image_file_map* fmap, const char* name,
struct image_section_map* ism)
static BOOL pe_find_section(struct image_file_map* fmap, const char* name,
struct image_section_map* ism)
{
const char* sectname;
unsigned i;
@ -148,7 +148,7 @@ BOOL pe_find_section(struct image_file_map* fmap, const char* name,
*
* Unmaps a single section from memory
*/
void pe_unmap_section(struct image_section_map* ism)
static void pe_unmap_section(struct image_section_map* ism)
{
if (ism->sidx >= 0 && ism->sidx < ism->fmap->u.pe.ntheader.FileHeader.NumberOfSections &&
ism->fmap->u.pe.sect[ism->sidx].mapped != IMAGE_NO_MAP)
@ -163,7 +163,7 @@ void pe_unmap_section(struct image_section_map* ism)
*
* Get the RVA of an PE section
*/
DWORD_PTR pe_get_map_rva(const struct image_section_map* ism)
static DWORD_PTR pe_get_map_rva(const struct image_section_map* ism)
{
if (ism->sidx < 0 || ism->sidx >= ism->fmap->u.pe.ntheader.FileHeader.NumberOfSections)
return 0;
@ -175,13 +175,22 @@ DWORD_PTR pe_get_map_rva(const struct image_section_map* ism)
*
* Get the size of a PE section
*/
unsigned pe_get_map_size(const struct image_section_map* ism)
static unsigned pe_get_map_size(const struct image_section_map* ism)
{
if (ism->sidx < 0 || ism->sidx >= ism->fmap->u.pe.ntheader.FileHeader.NumberOfSections)
return 0;
return ism->fmap->u.pe.sect[ism->sidx].shdr.Misc.VirtualSize;
}
static const struct image_file_map_ops pe_file_map_ops =
{
pe_map_section,
pe_unmap_section,
pe_find_section,
pe_get_map_rva,
pe_get_map_size,
};
/******************************************************************
* pe_is_valid_pointer_table
*
@ -206,11 +215,12 @@ static BOOL pe_is_valid_pointer_table(const IMAGE_NT_HEADERS* nthdr, const void*
*
* Maps an PE file into memory (and checks it's a real PE file)
*/
static BOOL pe_map_file(HANDLE file, struct image_file_map* fmap, enum module_type mt)
BOOL pe_map_file(HANDLE file, struct image_file_map* fmap, enum module_type mt)
{
void* mapping;
fmap->modtype = mt;
fmap->ops = &pe_file_map_ops;
fmap->alternate = NULL;
fmap->u.pe.hMap = CreateFileMappingW(file, NULL, PAGE_READONLY, 0, 0, NULL);
if (fmap->u.pe.hMap == 0) return FALSE;