Changeset 3156582 in mainline for arch/amd64/_link.ld.in

Timestamp:

2005-09-11T12:48:42Z (20 years ago)

Author:

Ondrej Palkovsky <ondrap@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

8e3fb24c

Parents:

8491c48

Message:

Updated symtab so that it works correctly with BE architectures.
Changed compiler for BE MIPS to be mips-sgi-irix5, because
mipsel -EB does not behave correctly.
Doc updates to amd64.
Added ARC BIOS support to MIPS architecture. Putchar works correctly,
kernel passed FPU & some rwlock tests.

File:

• arch/amd64/_link.ld.in (modified) (1 diff)

arch/amd64/_link.ld.in

@@ -63 +63 @@
         _hardcoded_kernel_size = (ktext_end - ktext_start) + (unmapped_ktext_end - unmapped_ktext_start) + (kdata_end - kdata_start) + (unmapped_kdata_end - unmapped_kdata_start);
 
+        /* Symbols that need to be accessed both from real mode & long mode */
+        /* e820*_boot is real mode (pre-above-1MB-move), e820* is */
+        /* kernel mapped above-1MB-physical copied symbol */
         e820table_boot = KA2PA(e820table) - BOOT_OFFSET;
         e820counter_boot = KA2PA(e820counter) - BOOT_OFFSET;
+
+        /* real_bootstrap_gdtr is mapped real_bootstrap_gdtr_boot */
+        /* It is physically outside of kernel area, we have to access */
+        /* it after modification from long mode for booting */
+        /* SMP slave processors */
         real_bootstrap_gdtr = PA2KA(real_bootstrap_gdtr_boot);
 }