diff options
Diffstat (limited to 'gcc-4.4.3/gcc/config/arm/lib1funcs.asm')
| -rw-r--r-- | gcc-4.4.3/gcc/config/arm/lib1funcs.asm | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/gcc-4.4.3/gcc/config/arm/lib1funcs.asm b/gcc-4.4.3/gcc/config/arm/lib1funcs.asm index e59af4d66..75d206067 100644 --- a/gcc-4.4.3/gcc/config/arm/lib1funcs.asm +++ b/gcc-4.4.3/gcc/config/arm/lib1funcs.asm @@ -1590,6 +1590,111 @@ LSYM(Lchange_\register): #endif /* L_interwork_call_via_rX */ #endif /* !__thumb2__ */ + +/* Functions to support compact pic switch tables in thumb1 state. + All these routines take an index into the table in r0. The + table is at LR & ~1 (but this must be rounded up in the case + of 32-bit entires). They are only permitted to clobber r12 + and r14 and r0 must be preserved on exit. */ +#ifdef L_thumb1_case_sqi + + .text + .align 0 + .force_thumb + .syntax unified + THUMB_FUNC_START __gnu_thumb1_case_sqi + push {r1} + mov r1, lr + lsrs r1, r1, #1 + lsls r1, r1, #1 + ldrsb r1, [r1, r0] + lsls r1, r1, #1 + add lr, lr, r1 + pop {r1} + bx lr + SIZE (__gnu_thumb1_case_sqi) +#endif + +#ifdef L_thumb1_case_uqi + + .text + .align 0 + .force_thumb + .syntax unified + THUMB_FUNC_START __gnu_thumb1_case_uqi + push {r1} + mov r1, lr + lsrs r1, r1, #1 + lsls r1, r1, #1 + ldrb r1, [r1, r0] + lsls r1, r1, #1 + add lr, lr, r1 + pop {r1} + bx lr + SIZE (__gnu_thumb1_case_uqi) +#endif + +#ifdef L_thumb1_case_shi + + .text + .align 0 + .force_thumb + .syntax unified + THUMB_FUNC_START __gnu_thumb1_case_shi + push {r0, r1} + mov r1, lr + lsrs r1, r1, #1 + lsls r0, r0, #1 + lsls r1, r1, #1 + ldrsh r1, [r1, r0] + lsls r1, r1, #1 + add lr, lr, r1 + pop {r0, r1} + bx lr + SIZE (__gnu_thumb1_case_shi) +#endif + +#ifdef L_thumb1_case_uhi + + .text + .align 0 + .force_thumb + .syntax unified + THUMB_FUNC_START __gnu_thumb1_case_uhi + push {r0, r1} + mov r1, lr + lsrs r1, r1, #1 + lsls r0, r0, #1 + lsls r1, r1, #1 + ldrh r1, [r1, r0] + lsls r1, r1, #1 + add lr, lr, r1 + pop {r0, r1} + bx lr + SIZE (__gnu_thumb1_case_uhi) +#endif + +#ifdef L_thumb1_case_si + + .text + .align 0 + .force_thumb + .syntax unified + THUMB_FUNC_START __gnu_thumb1_case_si + push {r0, r1} + mov r1, lr + adds.n r1, r1, #2 /* Align to word. */ + lsrs r1, r1, #2 + lsls r0, r0, #2 + lsls r1, r1, #2 + ldr r0, [r1, r0] + adds r0, r0, r1 + mov lr, r0 + pop {r0, r1} + mov pc, lr /* We know we were called from thumb code. */ + SIZE (__gnu_thumb1_case_si) +#endif + #endif /* Arch supports thumb. */ #ifndef __symbian__ |