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simplify the end of entry.S

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Robert Morris 2011-08-31 05:38:05 -04:00
parent 5e08357827
commit 5c292b3d71
1 changed files with 8 additions and 9 deletions
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17
entry.S
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@ -51,15 +51,14 @@ entry:
orl $(CR0_PG|CR0_WP), %eax orl $(CR0_PG|CR0_WP), %eax
movl %eax, %cr0 movl %eax, %cr0
# now switch to using addresses above KERNBASE # Set up the stack pointer.
# call addresses are pc-relative so we jump though this hoop:
mov $relocated, %eax
jmp *%eax
relocated:
# Set up the stack pointer and call into C.
movl $(stack + STACK), %esp movl $(stack + STACK), %esp
call main
spin: # Call main(), which switches to executing at
jmp spin # high addresses. The indirect call is needed because
# the assembler produces a PC-relative instruction
# for a direct call.
mov $main, %eax
jmp *%eax
.comm stack, STACK .comm stack, STACK