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Validate privileged code relationships

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- Work towards improving non-optimized build support
- Introduce MODE=zero which is -O0 without ASAN/UBSAN
- Use system GCC when ~/.cosmo.mk has USE_SYSTEM_TOOLCHAIN=1
- Have package.com check .privileged code doesn't call non-privileged
This commit is contained in:
Justine Tunney 2023-06-08 04:37:05 -07:00
parent 01fd655097
commit daf4454a06
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GPG key ID: BE714B4575D6E328
82 changed files with 808 additions and 850 deletions
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23
libc/intrin/nopl.internal.h
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@ -2,7 +2,7 @@
#define COSMOPOLITAN_LIBC_INTRIN_NOPL_H_
#if !(__ASSEMBLER__ + __LINKER__ + 0) && defined(__x86_64__) && \
defined(__GNUC__) && !defined(__llvm__) && !defined(__chibicc__) && \
!defined(__STRICT_ANSI__)
defined(__MNO_RED_ZONE__) && !defined(__STRICT_ANSI__)
/**
* @fileoverview Turns CALLs into NOPs that are fixupable at runtime.
@ -35,34 +35,39 @@
".equ\t\"" SECTION "_end\",.\n\t" \
".previous\n\t"
#define _NOPL0(SECTION, FUNC) \
#define _NOPL0(SECTION, FUNC) __NOPL0(SECTION, FUNC, IMAGE_BASE_VIRTUAL)
#define __NOPL0(SECTION, FUNC, GARDEN) ___NOPL0(SECTION, FUNC, GARDEN)
#define ___NOPL0(SECTION, FUNC, GARDEN) \
({ \
asm volatile(_NOPL_PROLOGUE(SECTION) /* */ \
_NOPL_EPILOGUE(SECTION) /* */ \
".section \".sort.rodata." SECTION ".2\",\"a\",@progbits\n\t" \
".balign\t4\n\t" \
".long\t353f-%a1\n\t" \
".long\t353f-" #GARDEN "\n\t" \
".previous\n353:\t" \
"nopl\t%a0" \
"nopl\t" #FUNC "(%%rip)" \
: /* no inputs */ \
: "X"(FUNC), "X"(IMAGE_BASE_VIRTUAL) \
: /* no outputs */ \
: "rax", "rdi", "rsi", "rdx", "rcx", "r8", "r9", "r10", \
"r11", "memory", "cc"); \
(void)0; \
})
#define _NOPL1(SECTION, FUNC, ARG) \
#define _NOPL1(SECTION, FUNC, ARG) \
__NOPL1(SECTION, FUNC, ARG, IMAGE_BASE_VIRTUAL)
#define __NOPL1(SECTION, FUNC, ARG, GARDEN) ___NOPL1(SECTION, FUNC, ARG, GARDEN)
#define ___NOPL1(SECTION, FUNC, ARG, GARDEN) \
({ \
register autotype(ARG) __arg asm("rdi") = ARG; \
asm volatile(_NOPL_PROLOGUE(SECTION) /* */ \
_NOPL_EPILOGUE(SECTION) /* */ \
".section \".sort.rodata." SECTION ".2\",\"a\",@progbits\n\t" \
".balign\t4\n\t" \
".long\t353f-%a2\n\t" \
".long\t353f-" #GARDEN "\n\t" \
".previous\n353:\t" \
"nopl\t%a1" \
"nopl\t" #FUNC "(%%rip)" \
: "+D"(__arg) \
: "X"(FUNC), "X"(IMAGE_BASE_VIRTUAL) \
: /* no inputs */ \
: "rax", "rsi", "rdx", "rcx", "r8", "r9", "r10", "r11", \
"memory", "cc"); \
(void)0; \