From 6f17862b8112995a2b045804eea264d4a451fae5 Mon Sep 17 00:00:00 2001 From: Christopher Faylor Date: Fri, 21 Feb 2003 02:29:18 +0000 Subject: [PATCH] * win32-nat.c (get_image_name): Check return value from ReadProcessMemory. (child_xfer_memory): Ditto. --- gdb/ChangeLog | 6 ++++++ gdb/win32-nat.c | 27 ++++++++++++--------------- gdb/windows-nat.c | 27 ++++++++++++--------------- 3 files changed, 30 insertions(+), 30 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index e655032e49a..32966ac80df 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,9 @@ +2003-02-20 Christopher Faylor + + * win32-nat.c (get_image_name): Check return value from + ReadProcessMemory. + (child_xfer_memory): Ditto. + 2003-02-20 Alexandre Oliva * configure.in (TARGET_SYSTEM_ROOT): Set default to diff --git a/gdb/win32-nat.c b/gdb/win32-nat.c index 103a3f21bc7..72e8c3f4c73 100644 --- a/gdb/win32-nat.c +++ b/gdb/win32-nat.c @@ -635,21 +635,16 @@ get_image_name (HANDLE h, void *address, int unicode) if (address == NULL) return NULL; - ReadProcessMemory (h, address, &address_ptr, sizeof (address_ptr), &done); - /* See if we could read the address of a string, and that the address isn't null. */ - - if (done != sizeof (address_ptr) || !address_ptr) + if (!ReadProcessMemory (h, address, &address_ptr, sizeof (address_ptr), &done) + || done != sizeof (address_ptr) || !address_ptr) return NULL; /* Find the length of the string */ - do - { - ReadProcessMemory (h, address_ptr + len * size, &b, size, &done); - len++; - } - while ((b[0] != 0 || b[size - 1] != 0) && done == size); + while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done) + && (b[0] != 0 || b[size - 1] != 0) && done == size) + continue; if (!unicode) ReadProcessMemory (h, address_ptr, buf, len, &done); @@ -1863,21 +1858,23 @@ child_xfer_memory (CORE_ADDR memaddr, char *our, int len, int write, struct mem_attrib *mem, struct target_ops *target) { - DWORD done; + DWORD done = 0; if (write) { DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n", len, (DWORD) memaddr)); - WriteProcessMemory (current_process_handle, (LPVOID) memaddr, our, - len, &done); + if (!WriteProcessMemory (current_process_handle, (LPVOID) memaddr, our, + len, &done)) + done = 0; FlushInstructionCache (current_process_handle, (LPCVOID) memaddr, len); } else { DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n", len, (DWORD) memaddr)); - ReadProcessMemory (current_process_handle, (LPCVOID) memaddr, our, len, - &done); + if (!ReadProcessMemory (current_process_handle, (LPCVOID) memaddr, our, + len, &done)) + done = 0; } return done; } diff --git a/gdb/windows-nat.c b/gdb/windows-nat.c index 103a3f21bc7..72e8c3f4c73 100644 --- a/gdb/windows-nat.c +++ b/gdb/windows-nat.c @@ -635,21 +635,16 @@ get_image_name (HANDLE h, void *address, int unicode) if (address == NULL) return NULL; - ReadProcessMemory (h, address, &address_ptr, sizeof (address_ptr), &done); - /* See if we could read the address of a string, and that the address isn't null. */ - - if (done != sizeof (address_ptr) || !address_ptr) + if (!ReadProcessMemory (h, address, &address_ptr, sizeof (address_ptr), &done) + || done != sizeof (address_ptr) || !address_ptr) return NULL; /* Find the length of the string */ - do - { - ReadProcessMemory (h, address_ptr + len * size, &b, size, &done); - len++; - } - while ((b[0] != 0 || b[size - 1] != 0) && done == size); + while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done) + && (b[0] != 0 || b[size - 1] != 0) && done == size) + continue; if (!unicode) ReadProcessMemory (h, address_ptr, buf, len, &done); @@ -1863,21 +1858,23 @@ child_xfer_memory (CORE_ADDR memaddr, char *our, int len, int write, struct mem_attrib *mem, struct target_ops *target) { - DWORD done; + DWORD done = 0; if (write) { DEBUG_MEM (("gdb: write target memory, %d bytes at 0x%08lx\n", len, (DWORD) memaddr)); - WriteProcessMemory (current_process_handle, (LPVOID) memaddr, our, - len, &done); + if (!WriteProcessMemory (current_process_handle, (LPVOID) memaddr, our, + len, &done)) + done = 0; FlushInstructionCache (current_process_handle, (LPCVOID) memaddr, len); } else { DEBUG_MEM (("gdb: read target memory, %d bytes at 0x%08lx\n", len, (DWORD) memaddr)); - ReadProcessMemory (current_process_handle, (LPCVOID) memaddr, our, len, - &done); + if (!ReadProcessMemory (current_process_handle, (LPCVOID) memaddr, our, + len, &done)) + done = 0; } return done; } -- 2.30.2