11a53e792f
There are a lot of under the hood changes here: - Move syscalls to be a dispatch table, defined by syscalls.inc - Don't need a full process state (push_all) in syscalls now - In push_all, define REGS instead of using offsets - Save TWO stack pointers as well as current saved stack pointer in TCB: - rsp0 is the base of the kernel stack for interrupts - rsp3 is the saved user stack from cpu_data - Update syscall numbers in nulldrv - Some asm-debugging enhancements to the gdb script - fork() still not working
23 lines
540 B
ArmAsm
23 lines
540 B
ArmAsm
%include "push_all.inc"
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extern load_process_image
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global ramdisk_process_loader
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ramdisk_process_loader:
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; create_process already pushed a cpu_state onto the stack for us, this
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; acts both as the cpu_state parameter to load_process_image, and the
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; saved state for the following iretq
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pop rdi ; the address of the program image
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pop rsi ; the size of the program image
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pop rdx ; the address of this process' process structure
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call load_process_image
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push rax ; load_process_image returns the process entrypoint
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swapgs
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iretq
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