diff options
Diffstat (limited to 'src/arch/arm/libgcc/uldivmod.S')
| -rw-r--r-- | src/arch/arm/libgcc/uldivmod.S | 28 |
1 files changed, 19 insertions, 9 deletions
diff --git a/src/arch/arm/libgcc/uldivmod.S b/src/arch/arm/libgcc/uldivmod.S index ac267d006e..521a5d1e33 100644 --- a/src/arch/arm/libgcc/uldivmod.S +++ b/src/arch/arm/libgcc/uldivmod.S @@ -55,8 +55,12 @@ Q_1 .req r1 R_0 .req r2 R_1 .req r3 +THUMB( +TMP .req r8 +) + ENTRY(__aeabi_uldivmod) - stmfd sp!, {r4, r5, r6, r7, lr} + stmfd sp!, {r4, r5, r6, r7, THUMB(TMP,) lr} @ Test if B == 0 orrs ip, B_0, B_1 @ Z set -> B == 0 beq L_div_by_0 @@ -92,12 +96,16 @@ L_div_64_64: subs D_1, D_0, #32 rsb ip, D_0, #32 movmi B_1, B_1, lsl D_0 - orrmi B_1, B_1, B_0, lsr ip +ARM( orrmi B_1, B_1, B_0, lsr ip ) +THUMB( lsrmi TMP, B_0, ip ) +THUMB( orrmi B_1, B_1, TMP ) movpl B_1, B_0, lsl D_1 mov B_0, B_0, lsl D_0 @ C = 1 << (clz B - clz A) movmi C_1, C_1, lsl D_0 - orrmi C_1, C_1, C_0, lsr ip +ARM( orrmi C_1, C_1, C_0, lsr ip ) +THUMB( lsrmi TMP, C_0, ip ) +THUMB( orrmi C_1, C_1, TMP ) movpl C_1, C_0, lsl D_1 mov C_0, C_0, lsl D_0 L_done_shift: @@ -170,7 +178,7 @@ L_exit: mov R_1, A_1 mov Q_0, D_0 mov Q_1, D_1 - ldmfd sp!, {r4, r5, r6, r7, pc} + ldmfd sp!, {r4, r5, r6, r7, THUMB(TMP,) pc} L_div_32_32: @ Note: A_0 & r0 are aliases @@ -180,7 +188,7 @@ L_div_32_32: mov R_0, r1 mov R_1, #0 mov Q_1, #0 - ldmfd sp!, {r4, r5, r6, r7, pc} + ldmfd sp!, {r4, r5, r6, r7, THUMB(TMP,) pc} L_pow2: /* CLZ only exists in ARM architecture version 5 and above. */ @@ -201,12 +209,14 @@ L_pow2: add D_0, D_0, #32 L_1: movpl A_0, A_0, lsr D_0 - orrpl A_0, A_0, A_1, lsl D_1 +ARM( orrpl A_0, A_0, A_1, lsl D_1 ) +THUMB( lslpl TMP, A_1, D_1 ) +THUMB( orrpl A_0, A_0, TMP ) mov A_1, A_1, lsr D_0 @ Mov back C to R mov R_0, C_0 mov R_1, C_1 - ldmfd sp!, {r4, r5, r6, r7, pc} + ldmfd sp!, {r4, r5, r6, r7, THUMB(TMP,) pc} #else @ Note: A, B and Q, R are aliases @ R = A & (B - 1) @@ -244,7 +254,7 @@ L_1: @ Move C to R mov R_0, C_0 mov R_1, C_1 - ldmfd sp!, {r4, r5, r6, r7, pc} + ldmfd sp!, {r4, r5, r6, r7, THUMB(TMP,) pc} #endif L_div_by_0: @@ -254,5 +264,5 @@ L_div_by_0: mov Q_1, #0 mov R_0, #0 mov R_1, #0 - ldmfd sp!, {r4, r5, r6, r7, pc} + ldmfd sp!, {r4, r5, r6, r7, THUMB(TMP,) pc} ENDPROC(__aeabi_uldivmod) |