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Get binaries closer to running without an o/s

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blinkenlights now does a pretty good job emulating what happens when
binaries boot from BIOS into long mode. So it's been much easier to
debug the bare metal process and wrinkle out many issues.
This commit is contained in:
Justine Tunney 2020-10-29 04:53:20 -07:00
parent feed0d2b0e
commit 2d80bbc802
50 changed files with 974 additions and 1062 deletions
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9
tool/build/lib/machine.h
View file

@ -3,7 +3,6 @@
#include "libc/runtime/runtime.h"
#include "third_party/xed/x86.h"
#include "tool/build/lib/fds.h"
#include "tool/build/lib/pml4t.h"
#define kMachineHalt -1
#define kMachineDecodeError -2
@ -134,6 +133,10 @@ struct Machine {
uint64_t cr0;
uint64_t cr2;
uint64_t cr4;
uint64_t gdt_base;
uint64_t idt_base;
uint16_t gdt_limit;
uint16_t idt_limit;
struct MachineRealFree {
uint64_t i;
uint64_t n;
@ -156,9 +159,12 @@ struct Machine {
int64_t bofram[2];
jmp_buf onhalt;
int64_t faultaddr;
bool dlab;
struct MachineFds fds;
uint8_t stash[4096];
uint8_t icache[1024][40];
void (*onbinbase)(struct Machine *);
void (*onlongbranch)(struct Machine *);
} aligned(64);
struct Machine *NewMachine(void) nodiscard;
@ -166,6 +172,7 @@ void FreeMachine(struct Machine *);
void ResetMem(struct Machine *);
void ResetCpu(struct Machine *);
void ResetTlb(struct Machine *);
void ResetInstructionCache(struct Machine *);
void LoadInstruction(struct Machine *);
void ExecuteInstruction(struct Machine *);
long AllocateLinearPage(struct Machine *);