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1bcec040d0
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tccelf.c:
- set_elf_sym()
check NOBITS instead of just .bss
- sort_sections()
must have common alignment for tls sections
fix BSD relro
tccpe.c:
- sort .tbss after .tdata
tccrun.c:
- TLS not supported with -run
- arm64: FlushInstructionCache on win32 too
lib/bt-exe.c:
- use less unused bss memory (from global vars in tcc.h)
arm64-gen.c:
- arm64_sym():
direct access (no GOT) for 'static' vars
relocate with 'addend' unless GOT
- reserve X16/x17 for internal usage (specifically to avoid
their usage as value register passed to store())
88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
/* ------------------------------------------------------------- */
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/* for linking rt_printline and the signal/exception handler
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from tccrun.c into executables. */
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#define CONFIG_TCC_BACKTRACE_ONLY
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#define ONE_SOURCE 0
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#define pstrcpy tcc_pstrcpy
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#include "../tccrun.c"
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#ifndef _WIN32
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# define __declspec(n)
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#endif
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#ifdef _WIN64
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static void bt_init_pe_prog_base(rt_context *p)
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{
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MEMORY_BASIC_INFORMATION mbi;
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addr_t imagebase;
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if (!p->prog_base)
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return;
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if (!VirtualQuery(p, &mbi, sizeof(mbi)) || !mbi.AllocationBase)
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return;
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imagebase = (addr_t)mbi.AllocationBase - p->prog_base;
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p->prog_base = (addr_t)mbi.AllocationBase - (imagebase & 0xffffffffu);
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}
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#endif
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__declspec(dllexport)
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void __bt_init(rt_context *p, int is_exe)
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{
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__attribute__((weak)) int main();
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__attribute__((weak)) void __bound_init(void*, int);
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//fprintf(stderr, "__bt_init %d %p %p %p\n", is_exe, p, p->stab_sym, p->bounds_start), fflush(stderr);
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/* call __bound_init here due to redirection of sigaction */
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/* needed to add global symbols */
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if (p->bounds_start)
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__bound_init(p->bounds_start, -1);
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#ifdef _WIN64
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bt_init_pe_prog_base(p);
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#endif
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/* add to chain */
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rt_wait_sem();
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p->next = g_rc, g_rc = p;
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rt_post_sem();
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if (is_exe) {
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/* we are the executable (not a dll) */
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p->top_func = main;
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set_exception_handler();
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}
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}
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__declspec(dllexport)
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void __bt_exit(rt_context *p)
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{
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struct rt_context *rc, **pp;
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__attribute__((weak)) void __bound_exit_dll(void*);
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//fprintf(stderr, "__bt_exit %d %p\n", !!p->top_func, p);
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if (p->bounds_start)
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__bound_exit_dll(p->bounds_start);
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/* remove from chain */
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rt_wait_sem();
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for (pp = &g_rc; rc = *pp, rc; pp = &rc->next)
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if (rc == p) {
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*pp = rc->next;
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break;
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}
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rt_post_sem();
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}
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/* copy a string and truncate it. */
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ST_FUNC char *pstrcpy(char *buf, size_t buf_size, const char *s)
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{
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int l = strlen(s);
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if (l >= buf_size)
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l = buf_size - 1;
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memcpy(buf, s, l);
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buf[l] = 0;
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return buf;
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}
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