elf2dmp: Rename PAGE_SIZE to ELF2DMP_PAGE_SIZE

As per POSIX specification of limits.h [1], OS libc may define
PAGE_SIZE in limits.h.

To prevent collosion of definition, we rename PAGE_SIZE here.

[1]: https://pubs.opengroup.org/onlinepubs/7908799/xsh/limits.h.html

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210118063808.12471-6-jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

Author: FlyGoat

contrib/elf2dmp/addrspace.c

@@ -207,8 +207,8 @@ int va_space_rw(struct va_space *vs, uint64_t addr,
         void *buf, size_t size, int is_write)
 {
     while (size) {
-        uint64_t page = addr & PFN_MASK;
-        size_t s = (page + PAGE_SIZE) - addr;
+        uint64_t page = addr & ELF2DMP_PFN_MASK;
+        size_t s = (page + ELF2DMP_PAGE_SIZE) - addr;
         void *ptr;
 
         s = (s > size) ? size : s;

contrib/elf2dmp/addrspace.h

@@ -10,9 +10,9 @@
 
 #include "qemu_elf.h"
 
-#define PAGE_BITS 12
-#define PAGE_SIZE (1ULL << PAGE_BITS)
-#define PFN_MASK (~(PAGE_SIZE - 1))
+#define ELF2DMP_PAGE_BITS 12
+#define ELF2DMP_PAGE_SIZE (1ULL << ELF2DMP_PAGE_BITS)
+#define ELF2DMP_PFN_MASK (~(ELF2DMP_PAGE_SIZE - 1))
 
 #define INVALID_PA  UINT64_MAX
 

contrib/elf2dmp/main.c

@@ -244,8 +244,8 @@ static int fill_header(WinDumpHeader64 *hdr, struct pa_space *ps,
     WinDumpHeader64 h;
     size_t i;
 
-    QEMU_BUILD_BUG_ON(KUSD_OFFSET_SUITE_MASK >= PAGE_SIZE);
-    QEMU_BUILD_BUG_ON(KUSD_OFFSET_PRODUCT_TYPE >= PAGE_SIZE);
+    QEMU_BUILD_BUG_ON(KUSD_OFFSET_SUITE_MASK >= ELF2DMP_PAGE_SIZE);
+    QEMU_BUILD_BUG_ON(KUSD_OFFSET_PRODUCT_TYPE >= ELF2DMP_PAGE_SIZE);
 
     if (!suite_mask || !product_type) {
         return 1;
@@ -281,14 +281,14 @@ static int fill_header(WinDumpHeader64 *hdr, struct pa_space *ps,
     };
 
     for (i = 0; i < ps->block_nr; i++) {
-        h.PhysicalMemoryBlock.NumberOfPages += ps->block[i].size / PAGE_SIZE;
+        h.PhysicalMemoryBlock.NumberOfPages += ps->block[i].size / ELF2DMP_PAGE_SIZE;
         h.PhysicalMemoryBlock.Run[i] = (WinDumpPhyMemRun64) {
-            .BasePage = ps->block[i].paddr / PAGE_SIZE,
-            .PageCount = ps->block[i].size / PAGE_SIZE,
+            .BasePage = ps->block[i].paddr / ELF2DMP_PAGE_SIZE,
+            .PageCount = ps->block[i].size / ELF2DMP_PAGE_SIZE,
         };
     }
 
-    h.RequiredDumpSpace += h.PhysicalMemoryBlock.NumberOfPages << PAGE_BITS;
+    h.RequiredDumpSpace += h.PhysicalMemoryBlock.NumberOfPages << ELF2DMP_PAGE_BITS;
 
     *hdr = h;
 
@@ -379,7 +379,7 @@ static int pe_get_pdb_symstore_hash(uint64_t base, void *start_addr,
     size_t pdb_name_sz;
     size_t i;
 
-    QEMU_BUILD_BUG_ON(sizeof(*dos_hdr) >= PAGE_SIZE);
+    QEMU_BUILD_BUG_ON(sizeof(*dos_hdr) >= ELF2DMP_PAGE_SIZE);
 
     if (memcmp(&dos_hdr->e_magic, e_magic, sizeof(e_magic))) {
         return 1;
@@ -509,10 +509,10 @@ int main(int argc, char *argv[])
     }
     printf("CPU #0 IDT[0] -> 0x%016"PRIx64"\n", idt_desc_addr(first_idt_desc));
 
-    KernBase = idt_desc_addr(first_idt_desc) & ~(PAGE_SIZE - 1);
+    KernBase = idt_desc_addr(first_idt_desc) & ~(ELF2DMP_PAGE_SIZE - 1);
     printf("Searching kernel downwards from 0x%016"PRIx64"...\n", KernBase);
 
-    for (; KernBase >= 0xfffff78000000000; KernBase -= PAGE_SIZE) {
+    for (; KernBase >= 0xfffff78000000000; KernBase -= ELF2DMP_PAGE_SIZE) {
         nt_start_addr = va_space_resolve(&vs, KernBase);
         if (!nt_start_addr) {
             continue;