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Add syscalls to Blinkenlights and fix bugs

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This commit is contained in:
Justine Tunney 2022-05-13 13:31:21 -07:00
parent f6df29cc3d
commit 578cb21591
25 changed files with 187 additions and 108 deletions
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1
libc/runtime/mmap.c
View file

@ -344,6 +344,7 @@ static noasan inline void *Mmap(void *addr, size_t size, int prot, int flags,
return MAP_FAILED;
}
f |= MAP_STACK_openbsd;
needguard = true;
} else if (IsLinux()) {
// by default MAP_GROWSDOWN will auto-allocate 10mb of pages. it's
// supposed to stop growing if an adjacent allocation exists, to

3
libc/runtime/paginate.c
View file

@ -36,7 +36,8 @@ void __paginate(int fd, const char *s) {
((args[0] = commandv("less", progpath, sizeof(progpath))) ||
(args[0] = commandv("more", progpath, sizeof(progpath))))) {
snprintf(tmppath, sizeof(tmppath), "%s%s-%s-%d.txt", kTmpPath,
program_invocation_short_name, "paginate", getpid());
firstnonnull(program_invocation_short_name, "unknown"), "paginate",
getpid());
if ((tfd = open(tmppath, O_WRONLY | O_CREAT | O_TRUNC, 0644)) != -1) {
write(tfd, s, strlen(s));
close(tfd);

21
libc/runtime/pc.internal.h
View file

@ -155,15 +155,18 @@
││ ││ │││ │ │ ││ ││││││││││
6666555555555544444444443333333333222222222211111111110000000000
3210987654321098765432109876543210987654321098765432109876543210*/
#define PAGE_V /* */ 0b000000001
#define PAGE_RW /* */ 0b000000010
#define PAGE_U /* */ 0b000000100
#define PAGE_4KB /* */ 0b010000000
#define PAGE_2MB /* */ 0b110000000
#define PAGE_1GB /* */ 0b110000000
#define PAGE_TA 0x00007ffffffff000
#define PAGE_PA2 0x00007fffffe00000
#define PAGE_XD 0x8000000000000000
#define PAGE_V /* */ 0b000000000001
#define PAGE_RW /* */ 0b000000000010
#define PAGE_U /* */ 0b000000000100
#define PAGE_4KB /* */ 0b000010000000
#define PAGE_2MB /* */ 0b000110000000
#define PAGE_1GB /* */ 0b000110000000
#define PAGE_IGN1 /* */ 0b111000000000
#define PAGE_RSRV /* blinkenlights reservation */ 0b001000000000
#define PAGE_GROD /* blinkenlights MAP_GROWSDOWN */ 0b010000000000
#define PAGE_TA 0x00007ffffffff000
#define PAGE_PA2 0x00007fffffe00000
#define PAGE_XD 0x8000000000000000
#if !(__ASSEMBLER__ + __LINKER__ + 0)

7
libc/runtime/program_invocation_short_name.S
View file

@ -18,8 +18,13 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/macros.internal.h"
// Supplies basename(argv[0]) The GNU Way.
.initbss 400,_init_program_invocation_short_name
// Supplies basename(argv[0]) The GNU Way.
//
// If argv[0] isn't supplied, this value will be null.
//
// @see GetProgramExecutableName()
// @see program_invocation_name
program_invocation_short_name:
.quad 0
.endobj program_invocation_short_name,globl