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https://github.com/wolfpld/tracy.git
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libbacktrace: support FDPIC (1dd5c40)
This commit is contained in:
parent
0d0e56dca3
commit
e26c34346b
@ -725,8 +725,8 @@ struct dwarf_data
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struct dwarf_data *next;
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/* The data for .gnu_debugaltlink. */
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struct dwarf_data *altlink;
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/* The base address for this file. */
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uintptr_t base_address;
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/* The base address mapping for this file. */
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struct libbacktrace_base_address base_address;
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/* A sorted list of address ranges. */
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struct unit_addrs *addrs;
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/* Number of address ranges in list. */
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@ -1947,8 +1947,9 @@ update_pcrange (const struct attr* attr, const struct attr_val* val,
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static int
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add_low_high_range (struct backtrace_state *state,
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const struct dwarf_sections *dwarf_sections,
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uintptr_t base_address, int is_bigendian,
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struct unit *u, const struct pcrange *pcrange,
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struct libbacktrace_base_address base_address,
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int is_bigendian, struct unit *u,
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const struct pcrange *pcrange,
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int (*add_range) (struct backtrace_state *state,
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void *rdata, uintptr_t lowpc,
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uintptr_t highpc,
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@ -1983,8 +1984,8 @@ add_low_high_range (struct backtrace_state *state,
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/* Add in the base address of the module when recording PC values,
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so that we can look up the PC directly. */
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lowpc += base_address;
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highpc += base_address;
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lowpc = libbacktrace_add_base (lowpc, base_address);
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highpc = libbacktrace_add_base (highpc, base_address);
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return add_range (state, rdata, lowpc, highpc, error_callback, data, vec);
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}
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@ -1996,7 +1997,7 @@ static int
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add_ranges_from_ranges (
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struct backtrace_state *state,
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const struct dwarf_sections *dwarf_sections,
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uintptr_t base_address, int is_bigendian,
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struct libbacktrace_base_address base_address, int is_bigendian,
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struct unit *u, uintptr_t base,
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const struct pcrange *pcrange,
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int (*add_range) (struct backtrace_state *state, void *rdata,
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@ -2042,10 +2043,11 @@ add_ranges_from_ranges (
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base = (uintptr_t) high;
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else
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{
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if (!add_range (state, rdata,
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(uintptr_t) low + base + base_address,
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(uintptr_t) high + base + base_address,
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error_callback, data, vec))
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uintptr_t rl, rh;
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rl = libbacktrace_add_base ((uintptr_t) low + base, base_address);
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rh = libbacktrace_add_base ((uintptr_t) high + base, base_address);
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if (!add_range (state, rdata, rl, rh, error_callback, data, vec))
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return 0;
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}
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}
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@ -2063,7 +2065,7 @@ static int
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add_ranges_from_rnglists (
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struct backtrace_state *state,
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const struct dwarf_sections *dwarf_sections,
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uintptr_t base_address, int is_bigendian,
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struct libbacktrace_base_address base_address, int is_bigendian,
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struct unit *u, uintptr_t base,
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const struct pcrange *pcrange,
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int (*add_range) (struct backtrace_state *state, void *rdata,
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@ -2146,9 +2148,10 @@ add_ranges_from_rnglists (
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u->addrsize, is_bigendian, index,
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error_callback, data, &high))
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return 0;
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if (!add_range (state, rdata, low + base_address,
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high + base_address, error_callback, data,
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vec))
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if (!add_range (state, rdata,
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libbacktrace_add_base (low, base_address),
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libbacktrace_add_base (high, base_address),
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error_callback, data, vec))
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return 0;
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}
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break;
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@ -2165,7 +2168,7 @@ add_ranges_from_rnglists (
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error_callback, data, &low))
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return 0;
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length = read_uleb128 (&rnglists_buf);
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low += base_address;
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low = libbacktrace_add_base (low, base_address);
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if (!add_range (state, rdata, low, low + length,
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error_callback, data, vec))
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return 0;
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@ -2179,8 +2182,9 @@ add_ranges_from_rnglists (
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low = read_uleb128 (&rnglists_buf);
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high = read_uleb128 (&rnglists_buf);
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if (!add_range (state, rdata, low + base + base_address,
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high + base + base_address,
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if (!add_range (state, rdata,
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libbacktrace_add_base (low + base, base_address),
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libbacktrace_add_base (high + base, base_address),
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error_callback, data, vec))
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return 0;
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}
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@ -2197,9 +2201,10 @@ add_ranges_from_rnglists (
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low = (uintptr_t) read_address (&rnglists_buf, u->addrsize);
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high = (uintptr_t) read_address (&rnglists_buf, u->addrsize);
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if (!add_range (state, rdata, low + base_address,
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high + base_address, error_callback, data,
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vec))
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if (!add_range (state, rdata,
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libbacktrace_add_base (low, base_address),
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libbacktrace_add_base (high, base_address),
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error_callback, data, vec))
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return 0;
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}
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break;
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@ -2211,7 +2216,7 @@ add_ranges_from_rnglists (
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low = (uintptr_t) read_address (&rnglists_buf, u->addrsize);
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length = (uintptr_t) read_uleb128 (&rnglists_buf);
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low += base_address;
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low = libbacktrace_add_base (low, base_address);
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if (!add_range (state, rdata, low, low + length,
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error_callback, data, vec))
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return 0;
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@ -2239,7 +2244,7 @@ add_ranges_from_rnglists (
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static int
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add_ranges (struct backtrace_state *state,
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const struct dwarf_sections *dwarf_sections,
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uintptr_t base_address, int is_bigendian,
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struct libbacktrace_base_address base_address, int is_bigendian,
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struct unit *u, uintptr_t base, const struct pcrange *pcrange,
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int (*add_range) (struct backtrace_state *state, void *rdata,
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uintptr_t lowpc, uintptr_t highpc,
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@ -2275,7 +2280,8 @@ add_ranges (struct backtrace_state *state,
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read, 0 if there is some error. */
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static int
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find_address_ranges (struct backtrace_state *state, uintptr_t base_address,
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find_address_ranges (struct backtrace_state *state,
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struct libbacktrace_base_address base_address,
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struct dwarf_buf *unit_buf,
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const struct dwarf_sections *dwarf_sections,
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int is_bigendian, struct dwarf_data *altlink,
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@ -2430,7 +2436,8 @@ find_address_ranges (struct backtrace_state *state, uintptr_t base_address,
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on success, 0 on failure. */
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static int
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build_address_map (struct backtrace_state *state, uintptr_t base_address,
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build_address_map (struct backtrace_state *state,
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struct libbacktrace_base_address base_address,
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const struct dwarf_sections *dwarf_sections,
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int is_bigendian, struct dwarf_data *altlink,
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backtrace_error_callback error_callback, void *data,
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@ -2649,7 +2656,7 @@ add_line (struct backtrace_state *state, struct dwarf_data *ddata,
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/* Add in the base address here, so that we can look up the PC
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directly. */
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ln->pc = pc + ddata->base_address;
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ln->pc = libbacktrace_add_base (pc, ddata->base_address);
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ln->filename = filename;
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ln->lineno = lineno;
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@ -4329,7 +4336,7 @@ dwarf_fileline (struct backtrace_state *state, uintptr_t pc,
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static struct dwarf_data *
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build_dwarf_data (struct backtrace_state *state,
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uintptr_t base_address,
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struct libbacktrace_base_address base_address,
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const struct dwarf_sections *dwarf_sections,
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int is_bigendian,
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struct dwarf_data *altlink,
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@ -4387,7 +4394,7 @@ build_dwarf_data (struct backtrace_state *state,
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int
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backtrace_dwarf_add (struct backtrace_state *state,
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uintptr_t base_address,
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struct libbacktrace_base_address base_address,
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const struct dwarf_sections *dwarf_sections,
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int is_bigendian,
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struct dwarf_data *fileline_altlink,
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@ -643,7 +643,7 @@ elf_symbol_search (const void *vkey, const void *ventry)
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static int
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elf_initialize_syminfo (struct backtrace_state *state,
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uintptr_t base_address,
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struct libbacktrace_base_address base_address,
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const unsigned char *symtab_data, size_t symtab_size,
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const unsigned char *strtab, size_t strtab_size,
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backtrace_error_callback error_callback,
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@ -709,7 +709,8 @@ elf_initialize_syminfo (struct backtrace_state *state,
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= *(const b_elf_addr *) (opd->data + (sym->st_value - opd->addr));
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else
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elf_symbols[j].address = sym->st_value;
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elf_symbols[j].address += base_address;
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elf_symbols[j].address =
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libbacktrace_add_base (elf_symbols[j].address, base_address);
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elf_symbols[j].size = sym->st_size;
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++j;
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}
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@ -6517,7 +6518,8 @@ backtrace_uncompress_lzma (struct backtrace_state *state,
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static int
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elf_add (struct backtrace_state *state, const char *filename, int descriptor,
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const unsigned char *memory, size_t memory_size,
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uintptr_t base_address, struct elf_ppc64_opd_data *caller_opd,
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struct libbacktrace_base_address base_address,
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struct elf_ppc64_opd_data *caller_opd,
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backtrace_error_callback error_callback, void *data,
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fileline *fileline_fn, int *found_sym, int *found_dwarf,
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struct dwarf_data **fileline_entry, int exe, int debuginfo,
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@ -7419,6 +7421,7 @@ phdr_callback (struct PhdrIterate *info, void *pdata)
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const char *filename;
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int descriptor;
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int does_not_exist;
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struct libbacktrace_base_address base_address;
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fileline elf_fileline_fn;
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int found_dwarf;
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@ -7448,7 +7451,8 @@ phdr_callback (struct PhdrIterate *info, void *pdata)
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return 0;
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}
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if (elf_add (pd->state, filename, descriptor, NULL, 0, info->dlpi_addr, NULL,
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base_address.m = info->dlpi_addr;
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if (elf_add (pd->state, filename, descriptor, NULL, 0, base_address, NULL,
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pd->error_callback, pd->data, &elf_fileline_fn, pd->found_sym,
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&found_dwarf, NULL, 0, 0, NULL, 0))
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{
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@ -7537,11 +7541,21 @@ backtrace_initialize (struct backtrace_state *state, const char *filename,
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fileline elf_fileline_fn = elf_nodebug;
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struct phdr_data pd;
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ret = elf_add (state, filename, descriptor, NULL, 0, 0, NULL, error_callback,
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data, &elf_fileline_fn, &found_sym, &found_dwarf, NULL, 1, 0,
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NULL, 0);
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if (!ret)
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return 0;
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/* When using fdpic we must use dl_iterate_phdr for all modules, including
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the main executable, so that we can get the right base address
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mapping. */
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if (!libbacktrace_using_fdpic ())
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{
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struct libbacktrace_base_address zero_base_address;
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memset (&zero_base_address, 0, sizeof zero_base_address);
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ret = elf_add (state, filename, descriptor, NULL, 0, zero_base_address,
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NULL, error_callback, data, &elf_fileline_fn, &found_sym,
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&found_dwarf, NULL, 1, 0, NULL, 0);
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if (!ret)
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return 0;
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}
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pd.state = state;
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pd.error_callback = error_callback;
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@ -333,10 +333,44 @@ struct dwarf_sections
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struct dwarf_data;
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/* The load address mapping. */
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#if defined(__FDPIC__) && defined(HAVE_DL_ITERATE_PHDR) && (defined(HAVE_LINK_H) || defined(HAVE_SYS_LINK_H))
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#ifdef HAVE_LINK_H
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#include <link.h>
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#endif
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#ifdef HAVE_SYS_LINK_H
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#include <sys/link.h>
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#endif
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#define libbacktrace_using_fdpic() (1)
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struct libbacktrace_base_address
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{
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struct elf32_fdpic_loadaddr m;
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};
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#define libbacktrace_add_base(pc, base) \
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((uintptr_t) (__RELOC_POINTER ((pc), (base).m)))
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#else /* not _FDPIC__ */
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#define libbacktrace_using_fdpic() (0)
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struct libbacktrace_base_address
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{
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uintptr_t m;
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};
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#define libbacktrace_add_base(pc, base) ((pc) + (base).m)
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#endif /* not _FDPIC__ */
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/* Add file/line information for a DWARF module. */
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extern int backtrace_dwarf_add (struct backtrace_state *state,
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uintptr_t base_address,
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struct libbacktrace_base_address base_address,
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const struct dwarf_sections *dwarf_sections,
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int is_bigendian,
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struct dwarf_data *fileline_altlink,
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@ -318,8 +318,9 @@ static const char * const dwarf_section_names[DEBUG_MAX] =
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/* Forward declaration. */
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static int macho_add (struct backtrace_state *, const char *, int, off_t,
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const unsigned char *, uintptr_t, int,
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backtrace_error_callback, void *, fileline *, int *);
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const unsigned char *, struct libbacktrace_base_address,
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int, backtrace_error_callback, void *, fileline *,
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int *);
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/* A dummy callback function used when we can't find any debug info. */
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@ -514,7 +515,7 @@ macho_defined_symbol (uint8_t type)
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static int
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macho_add_symtab (struct backtrace_state *state, int descriptor,
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uintptr_t base_address, int is_64,
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struct libbacktrace_base_address base_address, int is_64,
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off_t symoff, unsigned int nsyms, off_t stroff,
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unsigned int strsize,
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backtrace_error_callback error_callback, void *data)
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@ -629,7 +630,7 @@ macho_add_symtab (struct backtrace_state *state, int descriptor,
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if (name[0] == '_')
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++name;
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macho_symbols[j].name = name;
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macho_symbols[j].address = value + base_address;
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macho_symbols[j].address = libbacktrace_add_base (value, base_address);
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++j;
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}
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@ -762,7 +763,8 @@ macho_syminfo (struct backtrace_state *state, uintptr_t addr,
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static int
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macho_add_fat (struct backtrace_state *state, const char *filename,
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int descriptor, int swapped, off_t offset,
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const unsigned char *match_uuid, uintptr_t base_address,
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const unsigned char *match_uuid,
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struct libbacktrace_base_address base_address,
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int skip_symtab, uint32_t nfat_arch, int is_64,
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backtrace_error_callback error_callback, void *data,
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fileline *fileline_fn, int *found_sym)
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@ -864,7 +866,8 @@ macho_add_fat (struct backtrace_state *state, const char *filename,
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static int
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macho_add_dsym (struct backtrace_state *state, const char *filename,
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uintptr_t base_address, const unsigned char *uuid,
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struct libbacktrace_base_address base_address,
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const unsigned char *uuid,
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backtrace_error_callback error_callback, void *data,
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fileline* fileline_fn)
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{
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@ -982,7 +985,7 @@ macho_add_dsym (struct backtrace_state *state, const char *filename,
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static int
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macho_add (struct backtrace_state *state, const char *filename, int descriptor,
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off_t offset, const unsigned char *match_uuid,
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uintptr_t base_address, int skip_symtab,
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struct libbacktrace_base_address base_address, int skip_symtab,
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backtrace_error_callback error_callback, void *data,
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fileline *fileline_fn, int *found_sym)
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{
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@ -1244,7 +1247,7 @@ backtrace_initialize (struct backtrace_state *state, const char *filename,
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c = _dyld_image_count ();
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for (i = 0; i < c; ++i)
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{
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uintptr_t base_address;
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struct libbacktrace_base_address base_address;
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const char *name;
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int d;
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fileline mff;
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@ -1268,7 +1271,7 @@ backtrace_initialize (struct backtrace_state *state, const char *filename,
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continue;
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}
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base_address = _dyld_get_image_vmaddr_slide (i);
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base_address.m = _dyld_get_image_vmaddr_slide (i);
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mff = macho_nodebug;
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if (!macho_add (state, name, d, 0, NULL, base_address, 0,
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@ -1323,10 +1326,12 @@ backtrace_initialize (struct backtrace_state *state, const char *filename,
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void *data, fileline *fileline_fn)
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{
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fileline macho_fileline_fn;
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struct libbacktrace_base_address zero_base_address;
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int found_sym;
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macho_fileline_fn = macho_nodebug;
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if (!macho_add (state, filename, descriptor, 0, NULL, 0, 0,
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memset (&zero_base_address, 0, sizeof zero_base_address);
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if (!macho_add (state, filename, descriptor, 0, NULL, zero_base_address, 0,
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error_callback, data, &macho_fileline_fn, &found_sym))
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return 0;
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