From 08fcdd715394263263d3dfa2cab7bc4858c37e52 Mon Sep 17 00:00:00 2001 From: rearnsha Date: Mon, 12 May 2003 13:14:32 +0000 Subject: [PATCH] * arm/lib1funcs.asm (LSYM): Define -- on ELF prefix a local symbol with '.'. Change all local symbol definitions and references to use LSYM. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@66715 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/ChangeLog | 5 ++ gcc/config/arm/lib1funcs.asm | 164 ++++++++++++++++++++++--------------------- 2 files changed, 88 insertions(+), 81 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 79be918d260..4eacd0320f6 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2003-05-12 Richard Earnshaw + + * arm/lib1funcs.asm (LSYM): Define -- on ELF prefix a local symbol with + '.'. Change all local symbol definitions and references to use LSYM. + Mon May 12 11:32:53 CEST 2003 Jan Hubicka * expr.h (assemble_static_space): Update prototype. diff --git a/gcc/config/arm/lib1funcs.asm b/gcc/config/arm/lib1funcs.asm index ec706ece127..5d286517aef 100644 --- a/gcc/config/arm/lib1funcs.asm +++ b/gcc/config/arm/lib1funcs.asm @@ -51,10 +51,12 @@ Boston, MA 02111-1307, USA. */ #endif #define TYPE(x) .type SYM(x),function #define SIZE(x) .size SYM(x), . - SYM(x) +#define LSYM(x) .x #else #define __PLT__ #define TYPE(x) #define SIZE(x) +#define LSYM(x) x #endif /* Function end macros. Variants for 26 bit APCS and interworking. */ @@ -64,7 +66,7 @@ Boston, MA 02111-1307, USA. */ # define RETc(x) mov##x##s pc, lr # define RETCOND ^ .macro ARM_LDIV0 -Ldiv0: +LSYM(Ldiv0): str lr, [sp, #-4]! bl SYM (__div0) __PLT__ mov r0, #0 @ About as wrong as it could be. @@ -75,7 +77,7 @@ Ldiv0: # define RET bx lr # define RETc(x) bx##x lr .macro THUMB_LDIV0 -Ldiv0: +LSYM(Ldiv0): push { lr } bl SYM (__div0) mov r0, #0 @ About as wrong as it could be. @@ -83,7 +85,7 @@ Ldiv0: bx r1 .endm .macro ARM_LDIV0 -Ldiv0: +LSYM(Ldiv0): str lr, [sp, #-4]! bl SYM (__div0) __PLT__ mov r0, #0 @ About as wrong as it could be. @@ -94,14 +96,14 @@ Ldiv0: # define RET mov pc, lr # define RETc(x) mov##x pc, lr .macro THUMB_LDIV0 -Ldiv0: +LSYM(Ldiv0): push { lr } bl SYM (__div0) mov r0, #0 @ About as wrong as it could be. pop { pc } .endm .macro ARM_LDIV0 -Ldiv0: +LSYM(Ldiv0): str lr, [sp, #-4]! bl SYM (__div0) __PLT__ mov r0, #0 @ About as wrong as it could be. @@ -112,7 +114,7 @@ Ldiv0: #endif .macro FUNC_END name -Ldiv0: +LSYM(Ldiv0): #ifdef __thumb__ THUMB_LDIV0 #else @@ -165,7 +167,7 @@ pc .req r15 /* Bodies of the divsion and modulo routines. */ /* ------------------------------------------------------------------------ */ .macro ARM_DIV_MOD_BODY modulo -Loop1: +LSYM(Loop1): @ Unless the divisor is very big, shift it up in multiples of @ four bits, since this is the amount of unwinding in the main @ division loop. Continue shifting until the divisor is @@ -174,18 +176,18 @@ Loop1: cmplo divisor, dividend movlo divisor, divisor, lsl #4 movlo curbit, curbit, lsl #4 - blo Loop1 + blo LSYM(Loop1) -Lbignum: +LSYM(Lbignum): @ For very big divisors, we must shift it a bit at a time, or @ we will be in danger of overflowing. cmp divisor, #0x80000000 cmplo divisor, dividend movlo divisor, divisor, lsl #1 movlo curbit, curbit, lsl #1 - blo Lbignum + blo LSYM(Lbignum) -Loop3: +LSYM(Loop3): @ Test for possible subtractions. On the final pass, this may @ subtract too much from the dividend ... @@ -226,10 +228,10 @@ Loop3: cmp dividend, #0 @ Early termination? movnes curbit, curbit, lsr #4 @ No, any more bits to do? movne divisor, divisor, lsr #4 - bne Loop3 + bne LSYM(Loop3) .if \modulo -Lfixup_dividend: +LSYM(Lfixup_dividend): @ Any subtractions that we should not have done will be recorded in @ the top three bits of OVERDONE. Exactly which were not needed @ are governed by the position of the bit, stored in IP. @@ -241,7 +243,7 @@ Lfixup_dividend: @ the bit in ip could be in the top two bits which might then match @ with one of the smaller RORs. tstne ip, #0x7 - beq Lgot_result + beq LSYM(Lgot_result) tst overdone, ip, ror #3 addne dividend, dividend, divisor, lsr #3 tst overdone, ip, ror #2 @@ -250,39 +252,39 @@ Lfixup_dividend: addne dividend, dividend, divisor, lsr #1 .endif -Lgot_result: +LSYM(Lgot_result): .endm /* ------------------------------------------------------------------------ */ .macro THUMB_DIV_MOD_BODY modulo @ Load the constant 0x10000000 into our work register. mov work, #1 lsl work, #28 -Loop1: +LSYM(Loop1): @ Unless the divisor is very big, shift it up in multiples of @ four bits, since this is the amount of unwinding in the main @ division loop. Continue shifting until the divisor is @ larger than the dividend. cmp divisor, work - bhs Lbignum + bhs LSYM(Lbignum) cmp divisor, dividend - bhs Lbignum + bhs LSYM(Lbignum) lsl divisor, #4 lsl curbit, #4 - b Loop1 -Lbignum: + b LSYM(Loop1) +LSYM(Lbignum): @ Set work to 0x80000000 lsl work, #3 -Loop2: +LSYM(Loop2): @ For very big divisors, we must shift it a bit at a time, or @ we will be in danger of overflowing. cmp divisor, work - bhs Loop3 + bhs LSYM(Loop3) cmp divisor, dividend - bhs Loop3 + bhs LSYM(Loop3) lsl divisor, #1 lsl curbit, #1 - b Loop2 -Loop3: + b LSYM(Loop2) +LSYM(Loop3): @ Test for possible subtractions ... .if \modulo @ ... On the final pass, this may subtract too much from the dividend, @@ -290,79 +292,79 @@ Loop3: @ afterwards. mov overdone, #0 cmp dividend, divisor - blo Lover1 + blo LSYM(Lover1) sub dividend, dividend, divisor -Lover1: +LSYM(Lover1): lsr work, divisor, #1 cmp dividend, work - blo Lover2 + blo LSYM(Lover2) sub dividend, dividend, work mov ip, curbit mov work, #1 ror curbit, work orr overdone, curbit mov curbit, ip -Lover2: +LSYM(Lover2): lsr work, divisor, #2 cmp dividend, work - blo Lover3 + blo LSYM(Lover3) sub dividend, dividend, work mov ip, curbit mov work, #2 ror curbit, work orr overdone, curbit mov curbit, ip -Lover3: +LSYM(Lover3): lsr work, divisor, #3 cmp dividend, work - blo Lover4 + blo LSYM(Lover4) sub dividend, dividend, work mov ip, curbit mov work, #3 ror curbit, work orr overdone, curbit mov curbit, ip -Lover4: +LSYM(Lover4): mov ip, curbit .else @ ... and note which bits are done in the result. On the final pass, @ this may subtract too much from the dividend, but the result will be ok, @ since the "bit" will have been shifted out at the bottom. cmp dividend, divisor - blo Lover1 + blo LSYM(Lover1) sub dividend, dividend, divisor orr result, result, curbit -Lover1: +LSM(Lover1): lsr work, divisor, #1 cmp dividend, work - blo Lover2 + blo LSYM(Lover2) sub dividend, dividend, work lsr work, curbit, #1 orr result, work -Lover2: +LSYM(Lover2): lsr work, divisor, #2 cmp dividend, work - blo Lover3 + blo LSYM(Lover3) sub dividend, dividend, work lsr work, curbit, #2 orr result, work -Lover3: +LSYM(Lover3): lsr work, divisor, #3 cmp dividend, work - blo Lover4 + blo LSYM(Lover4) sub dividend, dividend, work lsr work, curbit, #3 orr result, work -Lover4: +LSYM(Lover4): .endif cmp dividend, #0 @ Early termination? - beq Lover5 + beq LSYM(Lover5) lsr curbit, #4 @ No, any more bits to do? - beq Lover5 + beq LSYM(Lover5) lsr divisor, #4 - b Loop3 -Lover5: + b LSYM(Loop3) +LSYM(Lover5): .if \modulo @ Any subtractions that we should not have done will be recorded in @ the top three bits of "overdone". Exactly which were not needed @@ -370,7 +372,7 @@ Lover5: mov work, #0xe lsl work, #28 and overdone, work - beq Lgot_result + beq LSYM(Lgot_result) @ If we terminated early, because dividend became zero, then the @ bit in ip will not be in the bottom nibble, and we should not @@ -381,33 +383,33 @@ Lover5: mov curbit, ip mov work, #0x7 tst curbit, work - beq Lgot_result + beq LSYM(Lgot_result) mov curbit, ip mov work, #3 ror curbit, work tst overdone, curbit - beq Lover6 + beq LSYM(Lover6) lsr work, divisor, #3 add dividend, work -Lover6: +LSYM(Lover6): mov curbit, ip mov work, #2 ror curbit, work tst overdone, curbit - beq Lover7 + beq LSYM(Lover7) lsr work, divisor, #2 add dividend, work -Lover7: +LSYM(Lover7): mov curbit, ip mov work, #1 ror curbit, work tst overdone, curbit - beq Lgot_result + beq LSYM(Lgot_result) lsr work, divisor, #1 add dividend, work .endif -Lgot_result: +LSYM(Lgot_result): .endm /* ------------------------------------------------------------------------ */ /* Start of the Real Functions */ @@ -419,13 +421,13 @@ Lgot_result: #ifdef __thumb__ cmp divisor, #0 - beq Ldiv0 + beq LSYM(Ldiv0) mov curbit, #1 mov result, #0 push { work } cmp dividend, divisor - blo Lgot_result + blo LSYM(Lgot_result) THUMB_DIV_MOD_BODY 0 @@ -436,11 +438,11 @@ Lgot_result: #else /* ARM version. */ cmp divisor, #0 - beq Ldiv0 + beq LSYM(Ldiv0) mov curbit, #1 mov result, #0 cmp dividend, divisor - blo Lgot_result + blo LSYM(Lgot_result) ARM_DIV_MOD_BODY 0 @@ -460,13 +462,13 @@ Lgot_result: #ifdef __thumb__ cmp divisor, #0 - beq Ldiv0 + beq LSYM(Ldiv0) mov curbit, #1 cmp dividend, divisor - bhs Lover10 + bhs LSYM(Lover10) RET -Lover10: +LSYM(Lover10): push { work } THUMB_DIV_MOD_BODY 1 @@ -477,7 +479,7 @@ Lover10: #else /* ARM version. */ cmp divisor, #0 - beq Ldiv0 + beq LSYM(Ldiv0) cmp divisor, #1 cmpne dividend, divisor moveq dividend, #0 @@ -500,7 +502,7 @@ Lover10: #ifdef __thumb__ cmp divisor, #0 - beq Ldiv0 + beq LSYM(Ldiv0) push { work } mov work, dividend @@ -509,24 +511,24 @@ Lover10: mov curbit, #1 mov result, #0 cmp divisor, #0 - bpl Lover10 + bpl LSYM(Lover10) neg divisor, divisor @ Loops below use unsigned. -Lover10: +LSYM(Lover10): cmp dividend, #0 - bpl Lover11 + bpl LSYM(Lover11) neg dividend, dividend -Lover11: +LSYM(Lover11): cmp dividend, divisor - blo Lgot_result + blo LSYM(Lgot_result) THUMB_DIV_MOD_BODY 0 mov r0, result mov work, ip cmp work, #0 - bpl Lover12 + bpl LSYM(Lover12) neg r0, r0 -Lover12: +LSYM(Lover12): pop { work } RET @@ -537,11 +539,11 @@ Lover12: mov result, #0 cmp divisor, #0 rsbmi divisor, divisor, #0 @ Loops below use unsigned. - beq Ldiv0 + beq LSYM(Ldiv0) cmp dividend, #0 rsbmi dividend, dividend, #0 cmp dividend, divisor - blo Lgot_result + blo LSYM(Lgot_result) ARM_DIV_MOD_BODY 0 @@ -564,29 +566,29 @@ Lover12: mov curbit, #1 cmp divisor, #0 - beq Ldiv0 - bpl Lover10 + beq LSYM(Ldiv0) + bpl LSYM(Lover10) neg divisor, divisor @ Loops below use unsigned. -Lover10: +LSYM(Lover10): push { work } @ Need to save the sign of the dividend, unfortunately, we need @ work later on. Must do this after saving the original value of @ the work register, because we will pop this value off first. push { dividend } cmp dividend, #0 - bpl Lover11 + bpl LSYM(Lover11) neg dividend, dividend -Lover11: +LSYM(Lover11): cmp dividend, divisor - blo Lgot_result + blo LSYM(Lgot_result) THUMB_DIV_MOD_BODY 1 pop { work } cmp work, #0 - bpl Lover12 + bpl LSYM(Lover12) neg dividend, dividend -Lover12: +LSYM(Lover12): pop { work } RET @@ -594,14 +596,14 @@ Lover12: cmp divisor, #0 rsbmi divisor, divisor, #0 @ Loops below use unsigned. - beq Ldiv0 + beq LSYM(Ldiv0) @ Need to save the sign of the dividend, unfortunately, we need @ ip later on; this is faster than pushing lr and using that. str dividend, [sp, #-4]! cmp dividend, #0 @ Test dividend against zero rsbmi dividend, dividend, #0 @ If negative make positive cmp dividend, divisor @ else if zero return zero - blo Lgot_result @ if smaller return dividend + blo LSYM(Lgot_result) @ if smaller return dividend mov curbit, #1 ARM_DIV_MOD_BODY 1 -- 2.11.4.GIT