Author: nbd Date: 2016-01-30 21:15:16 +0100 (Sat, 30 Jan 2016) New Revision: 48575
Added: trunk/toolchain/musl/patches/020-ldso-fix-GDB-dynamic-linker-info-on-MIPS.patch Log: musl: fix GDB debugging on mips (local, remote) Signed-off-by: Felix Fietkau <[email protected]> Added: trunk/toolchain/musl/patches/020-ldso-fix-GDB-dynamic-linker-info-on-MIPS.patch =================================================================== --- trunk/toolchain/musl/patches/020-ldso-fix-GDB-dynamic-linker-info-on-MIPS.patch (rev 0) +++ trunk/toolchain/musl/patches/020-ldso-fix-GDB-dynamic-linker-info-on-MIPS.patch 2016-01-30 20:15:16 UTC (rev 48575) @@ -0,0 +1,55 @@ +From: Felix Fietkau <[email protected]> +Date: Sat, 30 Jan 2016 19:19:08 +0100 +Subject: [PATCH] ldso: fix GDB dynamic linker info on MIPS + +GDB is looking for a pointer to the ldso debug info in the data of the +.rld_map section. + +Signed-off-by: Felix Fietkau <[email protected]> +--- + +--- a/arch/mips/reloc.h ++++ b/arch/mips/reloc.h +@@ -24,7 +24,7 @@ + #define REL_TPOFF R_MIPS_TLS_TPREL32 + + #define NEED_MIPS_GOT_RELOCS 1 +-#define DYNAMIC_IS_RO 1 ++#define DT_DEBUG_INDIRECT DT_MIPS_RLD_MAP + #define ARCH_SYM_REJECT_UND(s) (!((s)->st_other & STO_MIPS_PLT)) + + #define CRTJMP(pc,sp) __asm__ __volatile__( \ +--- a/ldso/dynlink.c ++++ b/ldso/dynlink.c +@@ -1582,11 +1582,14 @@ _Noreturn void __dls3(size_t *sp) + load_deps(&app); + make_global(&app); + +-#ifndef DYNAMIC_IS_RO +- for (i=0; app.dynv[i]; i+=2) +- if (app.dynv[i]==DT_DEBUG) ++ for (i=0; app.dynv[i]; i+=2) { ++ if (!DT_DEBUG_INDIRECT && app.dynv[i]==DT_DEBUG) + app.dynv[i+1] = (size_t)&debug; +-#endif ++ if (DT_DEBUG_INDIRECT && app.dynv[i]==DT_DEBUG_INDIRECT) { ++ size_t *ptr = (size_t *) app.dynv[i+1]; ++ *ptr = (size_t)&debug; ++ } ++ } + + /* The main program must be relocated LAST since it may contin + * copy relocations which depend on libraries' relocations. */ +--- a/src/internal/dynlink.h ++++ b/src/internal/dynlink.h +@@ -83,6 +83,10 @@ struct fdpic_dummy_loadmap { + #define NEED_MIPS_GOT_RELOCS 0 + #endif + ++#ifndef DT_DEBUG_INDIRECT ++#define DT_DEBUG_INDIRECT 0 ++#endif ++ + #define AUX_CNT 32 + #define DYN_CNT 32 + _______________________________________________ openwrt-commits mailing list [email protected] https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-commits
