diff options
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/config/xtensa/lib2funcs.S | 46 |
2 files changed, 27 insertions, 23 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index d684915..12eca50 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2006-10-25 Bob Wilson <bob.wilson@acm.org> + + * config/xtensa/lib2funcs.S: Use C-style comments. + 2006-10-24 Nathan Froyd <froydnj@codesourcery.com> * dwarf2out.c (gen_compile_unit_die): Use IS_ABSOLUTE_PATH. diff --git a/gcc/config/xtensa/lib2funcs.S b/gcc/config/xtensa/lib2funcs.S index c858456..9ccf29d 100644 --- a/gcc/config/xtensa/lib2funcs.S +++ b/gcc/config/xtensa/lib2funcs.S @@ -1,5 +1,5 @@ /* Assembly functions for libgcc2. - Copyright (C) 2001 Free Software Foundation, Inc. + Copyright (C) 2001, 2006 Free Software Foundation, Inc. Contributed by Bob Wilson (bwilson@tensilica.com) at Tensilica. This file is part of GCC. @@ -42,7 +42,7 @@ __xtensa_libgcc_window_spill: movi a2, 0 syscall retw - .size __xtensa_libgcc_window_spill,.-__xtensa_libgcc_window_spill + .size __xtensa_libgcc_window_spill, .-__xtensa_libgcc_window_spill /* __xtensa_nonlocal_goto: This code does all the hard work of a @@ -62,7 +62,7 @@ __xtensa_libgcc_window_spill: __xtensa_nonlocal_goto: entry sp, 32 - /* flush registers */ + /* Flush registers. */ mov a5, a2 movi a2, 0 syscall @@ -93,18 +93,18 @@ __xtensa_nonlocal_goto: proceeds, the window size is taken from the value of a0 saved _two_ frames below the current frame. */ - addi a5, sp, -16 # a5 = prev - save area + addi a5, sp, -16 /* a5 = prev - save area */ l32i a6, a5, 4 - addi a6, a6, -16 # a6 = cur - save area - mov a8, a0 # a8 = return address (for window size) + addi a6, a6, -16 /* a6 = cur - save area */ + mov a8, a0 /* a8 = return address (for window size) */ j .Lfirstframe -.Lnextframe: - l32i a8, a5, 0 # next return address (for window size) - mov a5, a6 # advance prev - addi a6, a7, -16 # advance cur -.Lfirstframe: - l32i a7, a6, 4 # a7 = next +.Lnextframe: + l32i a8, a5, 0 /* next return address (for window size) */ + mov a5, a6 /* advance prev */ + addi a6, a7, -16 /* advance cur */ +.Lfirstframe: + l32i a7, a6, 4 /* a7 = next */ bge a2, a7, .Lnextframe /* At this point, prev (a5) points to the save area with the saved @@ -114,25 +114,25 @@ __xtensa_nonlocal_goto: while updating the current save area, because the windows have already been flushed. */ - addi a4, sp, -16 # a4 = save area of this function + addi a4, sp, -16 /* a4 = save area of this function */ l32i a6, a5, 0 l32i a7, a5, 4 s32i a6, a4, 0 s32i a7, a4, 4 l32i a6, a5, 8 - l32i a7, a5, 12 + l32i a7, a5, 12 s32i a6, a4, 8 s32i a7, a4, 12 - + /* Set return address to goto handler. Use the window size bits from the return address two frames below the target. */ - extui a8, a8, 30, 2 # get window size from return addr. - slli a3, a3, 2 # get goto handler addr. << 2 + extui a8, a8, 30, 2 /* get window size from return addr. */ + slli a3, a3, 2 /* get goto handler addr. << 2 */ ssai 2 - src a0, a8, a3 # combine them with a funnel shift + src a0, a8, a3 /* combine them with a funnel shift */ retw - .size __xtensa_nonlocal_goto,.-__xtensa_nonlocal_goto + .size __xtensa_nonlocal_goto, .-__xtensa_nonlocal_goto /* __xtensa_sync_caches: This function is called after writing a trampoline @@ -160,7 +160,7 @@ __xtensa_nonlocal_goto: __xtensa_sync_caches: entry sp, 32 #if XCHAL_DCACHE_SIZE > 0 - # Flush the trampoline from the data cache + /* Flush the trampoline from the data cache. */ extui a4, a2, 0, XCHAL_DCACHE_LINEWIDTH addi a4, a4, TRAMPOLINE_SIZE addi a4, a4, (1 << XCHAL_DCACHE_LINEWIDTH) - 1 @@ -172,9 +172,9 @@ __xtensa_sync_caches: addi a4, a4, -1 bnez a4, .Ldcache_loop isync -#endif +#endif #if XCHAL_ICACHE_SIZE > 0 - # Invalidate the corresponding lines in the instruction cache + /* Invalidate the corresponding lines in the instruction cache. */ extui a4, a2, 0, XCHAL_ICACHE_LINEWIDTH addi a4, a4, TRAMPOLINE_SIZE addi a4, a4, (1 << XCHAL_ICACHE_LINEWIDTH) - 1 @@ -187,4 +187,4 @@ __xtensa_sync_caches: isync #endif retw - .size __xtensa_sync_caches,.-__xtensa_sync_caches + .size __xtensa_sync_caches, .-__xtensa_sync_caches |