File unaligned_acpidump.patch of Package acpica

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File unaligned_acpidump.patch of Package acpica (Revision f1259b1da61eb196df30f0c38cf8e2c1)

Currently displaying revision f1259b1da61eb196df30f0c38cf8e2c1 , Show latest

Avoid unaligend accesses for IA64 in acpidump

From: Andreas Schwab <schwab@suse.de>

--- pmtools-20071116/acpidump/acpidump.c
+++ pmtools-20071116/acpidump/acpidump.c
@@ -312,7 +312,10 @@ static int acpi_dump_RSDT(int fd, struct
 	num = (sdt->length - sizeof(struct acpi_table_header))/sizeof(u32);
 	offset = (char *)sdt + sizeof(struct acpi_table_header);
 	for (i = 0; i < num; ++i, offset += sizeof(u32)) {
-		addr = (unsigned long)(*(u32 *)offset);
+		u32 tmp;
+		memcpy(&tmp, offset, sizeof(tmp));
+		addr = (unsigned long)(tmp);
+
 		if (!addr) continue;
 		tbl = acpi_map_table(addr, 0);
 		if (!tbl) continue;
@@ -325,7 +328,8 @@ static int acpi_dump_RSDT(int fd, struct
 		}
 		acpi_unmap_table(tbl);
 		if (connect) {
-			(*(u32*)offset) = lseek(fd, 0, SEEK_CUR);
+			tmp = lseek(fd, 0, SEEK_CUR);
+			memcpy(offset, &tmp, sizeof(tmp));
 		}
 	}
 	addr = (unsigned long)rsdp->rsdt_physical_address;
@@ -357,7 +361,9 @@ static int acpi_dump_XSDT(int fd, struct
 	num = (sdt->length - sizeof(struct acpi_table_header))/sizeof(u64);
 	offset = (char *)sdt + sizeof(struct acpi_table_header);
 	for (i = 0; i < num; ++i, offset += sizeof(u64)) {
-		addr = (unsigned long)(*(u64 *)offset);
+		u64 tmp;
+		memcpy(&tmp, offset, sizeof(tmp));
+		addr = (unsigned long)tmp;
 		if (!addr) continue;
 		tbl = acpi_map_table(addr, 0);
 		if (!tbl) continue;
@@ -370,7 +376,8 @@ static int acpi_dump_XSDT(int fd, struct
 		}
 		acpi_unmap_table(tbl);
 		if (connect) {
-			(*(u64*)offset) = lseek(fd, 0, SEEK_CUR);
+			tmp = lseek(fd, 0, SEEK_CUR);
+			memcpy(offset, &tmp, sizeof(tmp));
 		}
 	}
 	addr = (unsigned long)rsdp->xsdt_physical_address;

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File unaligned_acpidump.patch of Package acpica (Revision f1259b1da61eb196df30f0c38cf8e2c1)

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