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ST: Support Cygwin64 and MIPS

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winlin 2021-10-02 08:54:53 +08:00
parent 7d3ec991e1
commit 1836847269
29 changed files with 1116 additions and 105 deletions
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103
trunk/3rdparty/st-srs/tools/verify/verify.c vendored Normal file
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/* SPDX-License-Identifier: MIT */
/* Copyright (c) 2021 Winlin */
#include <stdio.h>
#include <setjmp.h>
extern int _st_md_cxt_save(jmp_buf env);
extern void _st_md_cxt_restore(jmp_buf env, int val);
void verify_jmpbuf();
void print_buf(unsigned char* p, int nn_jb);
int main(int argc, char** argv)
{
verify_jmpbuf();
return 0;
}
#ifdef __linux__
#ifdef __mips__
void verify_jmpbuf()
{
// https://en.wikipedia.org/wiki/MIPS_architecture#Calling_conventions
register void* ra asm("ra");
register void* gp asm("gp");
register void* sp asm("sp");
register void* fp asm("fp");
// $s0–$s7 $16–$23 saved temporaries
register void* s0 asm("s0");
register void* s1 asm("s1");
register void* s2 asm("s2");
register void* s3 asm("s3");
register void* s4 asm("s4");
register void* s5 asm("s5");
register void* s6 asm("s6");
register void* s7 asm("s7");
jmp_buf ctx = {0};
int r0 = _st_md_cxt_save(ctx);
if (!r0) {
_st_md_cxt_restore(ctx, 1); // Restore/Jump to previous line, set r0 to 1.
}
printf("sp=%p, ra=%p, gp=%p, s0=%p, s1=%p, s2=%p, s3=%p, s4=%p, s5=%p, s6=%p, s7=%p, fp=%p\n",
sp, ra, gp, s0, s1, s2, s3, s4, s5, s6, s7, fp);
int nn_jb = sizeof(ctx[0].__jb);
unsigned char* p = (unsigned char*)ctx[0].__jb;
print_buf(p, nn_jb);
}
#endif
#endif
#ifdef __APPLE__
#ifdef __x86_64__
void verify_jmpbuf()
{
// https://courses.cs.washington.edu/courses/cse378/10au/sections/Section1_recap.pdf
void *rbx, *rbp, *r12, *r13, *r14, *r15, *rsp;
__asm__ __volatile__ ("movq %%rbx,%0": "=r"(rbx): /* No input */);
__asm__ __volatile__ ("movq %%rbp,%0": "=r"(rbp): /* No input */);
__asm__ __volatile__ ("movq %%r12,%0": "=r"(r12): /* No input */);
__asm__ __volatile__ ("movq %%r13,%0": "=r"(r13): /* No input */);
__asm__ __volatile__ ("movq %%r14,%0": "=r"(r14): /* No input */);
__asm__ __volatile__ ("movq %%r15,%0": "=r"(r15): /* No input */);
__asm__ __volatile__ ("movq %%rsp,%0": "=r"(rsp): /* No input */);
printf("rbx=%p, rbp=%p, r12=%p, r13=%p, r14=%p, r15=%p, rsp=%p\n",
rbx, rbp, r12, r13, r14, r15, rsp);
jmp_buf ctx = {0};
int r0 = _st_md_cxt_save(ctx);
if (!r0) {
_st_md_cxt_restore(ctx, 1); // Restore/Jump to previous line, set r0 to 1.
}
int nn_jb = sizeof(ctx);
printf("sizeof(jmp_buf)=%d (unsigned long long [%d])\n", nn_jb, nn_jb/8);
unsigned char* p = (unsigned char*)ctx;
print_buf(p, nn_jb);
}
#endif
#endif
void print_buf(unsigned char* p, int nn_jb)
{
printf(" ");
for (int i = 0; i < nn_jb; i++) {
printf("0x%02x ", (unsigned char)p[i]);
int newline = ((i + 1) % sizeof(void*));
if (!newline || i == nn_jb - 1) {
printf("\n");
}
if (!newline && i < nn_jb - 1) {
printf(" ");
}
}
}