61 lines
1.4 KiB
HolyC
61 lines
1.4 KiB
HolyC
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#help_index "Call"
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asm {
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_HI_CALL::
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PUSH RBP
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MOV RBP,RSP
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MOV RAX,U64 16[RBP]
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TEST RAX,RAX
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JZ @@05
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CALL RAX
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@@05: POP RBP
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RET1 8
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//************************************
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_HI_MEMCPY::
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PUSH RBP
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MOV RBP,RSP
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PUSH RSI
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PUSH RDI
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CLD
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MOV RDI,U64 SF_ARG1[RBP]
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MOV RSI,U64 SF_ARG2[RBP]
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MOV RCX,U64 SF_ARG3[RBP]
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REP_MOVSB
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MOV RAX,RDI
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POP RDI
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POP RSI
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POP RBP
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RET1 24
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}
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_extern _HI_CALL I64 HiCall(U8 *machine_code);
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_extern _HI_MEMCPY U8 *HiMemCpy(U8 *dst,U8 *src,I64 cnt);
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#help_index "Boot"
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public U0 BootRAM(U8 *filename=NULL)
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{//Softboot Kernel.BIN file. No hardware reset.
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I64 size;
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CKernel *hi_image,*lo_image=mem_boot_base-sizeof(CBinFile),
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reg *sys_ram_reboot;
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if (!filename)
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filename="::/" KERNEL_BIN_C;
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do if (!(hi_image=FileRead(filename,&size))) return;
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while (hi_image<0x100000); //If alloc from low 640K, just get another copy.
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do sys_ram_reboot=MAlloc(SYS_RAM_REBOOT_END-SYS_RAM_REBOOT,Fs->code_heap);
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while (sys_ram_reboot<0x100000);
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hi_image->boot_src=BOOT_SRC_RAM;
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hi_image->boot_blk=0;
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hi_image->boot_patch_table_base=lo_image(U8 *)+hi_image->h.patch_table_offset;
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hi_image->sys_run_level =lo_image->sys_run_level&(RLF_VGA|RLF_16BIT);
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MemCpy(&hi_image->start,&lo_image->start,
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sizeof(CKernel)-offset(CKernel.start));
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CLI
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if (mp_cnt>1)
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MPHalt;
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HiMemCpy(sys_ram_reboot,SYS_RAM_REBOOT,SYS_RAM_REBOOT_END-SYS_RAM_REBOOT);
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HiMemCpy(lo_image,hi_image,size);
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HiCall(sys_ram_reboot);
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}
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