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Jump to HULK from assembly

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This commit is contained in:
Josh Holtrop 2022-03-26 00:36:23 -04:00
parent f29bd9d00c
commit f761d0a445
2 changed files with 8 additions and 5 deletions
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11
src/hello/hello.d
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@ -11,6 +11,7 @@ import hulk.header : HulkHeader = Header;
import hos.page_table; import hos.page_table;
import hos.cpu; import hos.cpu;
import hos.memory; import hos.memory;
import ldc.llvmasm;
__gshared EFI_SYSTEM_TABLE * st; __gshared EFI_SYSTEM_TABLE * st;
private __gshared BootInfo bootinfo; private __gshared BootInfo bootinfo;
@ -376,10 +377,12 @@ private void build_page_tables(ulong max_physical_address, ulong bss_phys, ulong
/** /**
* Jump to HULK entry point. * Jump to HULK entry point.
*/ */
private void jump_to_hulk() private void jump_to_hulk(ulong stack_end)
{ {
void function(BootInfo *) hulk_entry_fn = cast(void function(BootInfo *))hulk_header().entry; __asm(
hulk_entry_fn(&bootinfo); "jmpq *$0",
"r,{rdi},{rsp}",
hulk_header().entry, &bootinfo, stack_end);
} }
/** /**
@ -431,7 +434,7 @@ extern (C) EFI_STATUS efi_main(EFI_HANDLE image_handle, EFI_SYSTEM_TABLE * st)
bootinfo.bss_phys = bss_phys; bootinfo.bss_phys = bss_phys;
bootinfo.stack_phys = stack_phys; bootinfo.stack_phys = stack_phys;
jump_to_hulk(); jump_to_hulk(stack_phys + hulk_stack_size());
return EFI_SUCCESS; return EFI_SUCCESS;
} }

2
src/hulk/hulk.d
View File

@ -26,7 +26,7 @@ private __gshared Header hulk_header = {
* *
* @param bootinfo Pointer to HULK boot information structure. * @param bootinfo Pointer to HULK boot information structure.
*/ */
extern(C) void hulk_start(ulong rdi, ulong rsi, ulong rdx, BootInfo * bootinfo) void hulk_start(BootInfo * bootinfo)
{ {
fb.initialize(bootinfo.fb.buffer, bootinfo.fb.width, bootinfo.fb.height, bootinfo.fb.stride); fb.initialize(bootinfo.fb.buffer, bootinfo.fb.width, bootinfo.fb.height, bootinfo.fb.stride);
console.initialize(); console.initialize();