diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog index e39fccc322c4cbc95ec5ff30da6b56f99601d849..2ceb1921591b3ad48788997cc54aa6757b00985f 100644 --- a/libgcc/ChangeLog +++ b/libgcc/ChangeLog @@ -3,6 +3,9 @@ * config/c6x/pr-support.c (__gnu_unwind_24bit): Correct logic for the case where B3 isn't the return register. + * config/c6x/pr-support.c (pop_compact_frame, pop_frame): Correct + logic for doubleword pops. + 2011-10-25 Andreas Tobler <andreast@fgznet.ch> * config/rs6000/t-freebsd: Add wildcard. diff --git a/libgcc/config/c6x/pr-support.c b/libgcc/config/c6x/pr-support.c index e635a6033c26e363b20ed081c73fadb20acc5410..2e0958c4a23bec3bc5a97be489e315b280bd477a 100644 --- a/libgcc/config/c6x/pr-support.c +++ b/libgcc/config/c6x/pr-support.c @@ -153,10 +153,7 @@ pop_compact_frame (_Unwind_Context * context, _uw mask, _uw *ptr, int inc_sp) { int size; _uw test; - int i; - int regno; - int regno2; - int nregs; + int i, regno, nregs; size = 0; nregs = __builtin_popcount (mask); @@ -167,13 +164,11 @@ pop_compact_frame (_Unwind_Context * context, _uw mask, _uw *ptr, int inc_sp) continue; regno = unwind_frame_regs[12 - i]; - /* The last slot is a sigle word, so cannot store a register pair. */ - if (nregs > 2) - regno2 = unwind_frame_regs[13 - i]; - else - regno2 = 0xff; - if ((mask & (test << 1)) != 0 && regno2 == regno + 1 && (regno & 1) == 0) + if (i < 12 && nregs > 2 + && (mask & (test << 1)) != 0 + && unwind_frame_regs[11 - i] == regno + 1 + && (regno & 1) == 0) { i++; nregs--; @@ -196,12 +191,11 @@ pop_compact_frame (_Unwind_Context * context, _uw mask, _uw *ptr, int inc_sp) continue; regno = unwind_frame_regs[12 - i]; - if (nregs > 2) - regno2 = unwind_frame_regs[13 - i]; - else - regno2 = 0xff; - if ((mask & (test << 1)) != 0 && regno2 == regno + 1 && (regno & 1) == 0) + if (i < 12 && nregs > 2 + && (mask & (test << 1)) != 0 + && unwind_frame_regs[11 - i] == regno + 1 + && (regno & 1) == 0) { /* Register pair. */ unwind_restore_pair (context, regno, ptr); @@ -243,7 +237,7 @@ pop_frame (_Unwind_Context * context, _uw mask, _uw *ptr, int inc_sp) if ((mask & (1 << i)) == 0) continue; regno = unwind_frame_regs[12 - i]; - if (i < 12 && unwind_frame_regs[13 - i] == (regno + 1) + if (i < 12 && unwind_frame_regs[11 - i] == (regno + 1) && (mask & (1 << (i + 1))) != 0 && (((_uw)ptr) & 4) == 0 && (regno & 1) == 0)