From b905869a35f062a4e5072f10bec3a2ba3db0e365 Mon Sep 17 00:00:00 2001 From: Jon Santmyer Date: Wed, 30 Jul 2025 14:32:01 -0400 Subject: working userland with some invoke syscalls --- boot/limine/limine.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 boot/limine/limine.c (limited to 'boot/limine/limine.c') diff --git a/boot/limine/limine.c b/boot/limine/limine.c new file mode 100644 index 0000000..6a1bb43 --- /dev/null +++ b/boot/limine/limine.c @@ -0,0 +1,38 @@ +#include "limine.h" +#include "boot.h" +#include "string.h" + +char s_kernel_stack_initial[8192]; + +char *jove_bootargs; +int jove_bootargs_len; + +struct limine_kernel_file_request s_kernel_file_req = { + .id = LIMINE_KERNEL_FILE_REQUEST +}; + +void +_start(void) +{ + __asm__ volatile("movq %0, %%rsp":: "r"((uintptr_t)&s_kernel_stack_initial + 8191)); + + struct limine_kernel_file_response *kernel_file_response = s_kernel_file_req.response; + jove_bootargs = kernel_file_response->kernel_file->cmdline; + jove_bootargs_len = strlen(jove_bootargs); + + //Zero all spaces in bootargs not enclosed with quotes. + for(char *c = jove_bootargs; *c; c++) { + if(*c == '"') { + *c = 0; + for(++c; *c && *c != '"'; c++); + *(c++) = 0; + continue; + } + if(*c == ' ') *c = 0; + } + + extern void _jove_main(void); + + __asm__ volatile("movq $0, %%rbp"::); + _jove_main(); +} -- cgit v1.2.1