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12 Commits

Author SHA1 Message Date
Jan (janneke) Nieuwenhuizen 67cfa52e44
Revert "ARM: Use explicit remainder in __mesabi_uldiv call." 
This reverts commit 7706fa7b80210f1439914a51ef74eb2a7a69fe6e.
 2022-10-12 15:04:21 +02:00
Jan (janneke) Nieuwenhuizen 6359069607
Revert "ARM: Fix unsigned modulo." 
This reverts commit 980a18a98125ccd9ef263bb9ca0141c968f7f72e.
 2022-10-12 15:04:21 +02:00
Jan (janneke) Nieuwenhuizen 164c2e9319 ARM: Use explicit remainder in __mesabi_uldiv call. 
This inexplicably fixes a segfault in tcc-boot0.

* module/mescc/armv4/as.scm (armv4:r0/r1): Instead of using "push 0",
use explicit slot for remainder.
 2022-10-12 14:58:15 +02:00
Jan (janneke) Nieuwenhuizen 1b8c7e0029 ARM: Fix unsigned modulo. 
* lib/arm-mes/arm.M1 (mov____%esp,%r3): New macro.
* module/mescc/armv4/as.scm (armv4:r0%r1): Use it to avoid overwriting
%r0 before caling __mesabi_uldiv.
 2022-10-12 14:58:15 +02:00
Danny Milosavljevic 95c71f3178
div: Move __aeabi_idiv to __GNUC__; introduce __mesabi_idiv. 
* lib/mes/div.c (__aeabi_idiv): Move for conditional compilation.
(__mesabi_idiv): New procedure.
* module/mescc/armv4/as.scm (armv4:r0/r1): Use __mesabi_idiv.
 2020-10-06 10:04:28 +02:00
Jan (janneke) Nieuwenhuizen 1c06c0170a
ARM: as: Fix ldrsb_ typo. 
(armv4:byte-r0-mem->r1-mem): : Add missing "_" to ldrsb_.
 2020-10-06 10:04:28 +02:00
Jan (janneke) Nieuwenhuizen a945bee494
ARM: as: Fix strh__ typo. 
* module/mescc/armv4/as.scm (armv4:word-r0-mem->r1-mem): Add missing "_"
to strh__.
 2020-10-06 10:04:28 +02:00
Jan (janneke) Nieuwenhuizen f3f405a83a
ARM: as: Guile compile fix. 
* module/mescc/armv4/as.scm (optimize-immediate): Do not unquote compare
functions (and numbers).
 2020-08-24 11:24:02 +02:00
Danny Milosavljevic d9bda45853
ARM: Handle signed values in r-byte-mem-add, r-word-mem-add. 
* lib/arm-mes/arm.M1 (ldrb___%r0,(%r1)): Delete macro.
(ldrh___%r0,(%r0)): Delete macro.
(ldrsh__%r0,(%r0)): New macro.
(ldrh___%r0,(%r1)): Delete macro.
(ldrsh__%r0,(%r1)): New macro.
(ldrh___%r1,(%r1)): Delete macro.
(ldrsh__%r1,(%r1)): New macro.
(ldrh___%r2,(%r2)): Delete macro.
(ldrsh__%r2,(%r2)): New macro.
(ldrh___%r3,(%r3)): Delete macro.
(ldrsh__%r3,(%r3)): New macro.
(ldrsb__%r0,(%r1)): New macro.
* module/mescc/armv4/as.scm (armv4:r-byte-mem-add): Use ldrsb.
(armv4:r-word-mem-add): Use ldrsh, add____$i32,(%r0).
(armv4:word-mem->r): Use ldrsh.
 2020-06-19 02:45:33 +02:00
Danny Milosavljevic aaa174382e
ARM: Factor out optimize-immediate. 
* module/mescc/armv4/as.scm (optimize-immediate): New macro.
(immediate->r0): Use it.
(armv4:value->r): Use it.
(armv4:local->r): Use it.
(armv4:r->local+n): Use it.
(armv4:r-byte-mem-add): Use it.
(armv4:r-word-mem-add): Use it.
(armv4:local-ptr->r): Use it.
(armv4:r+value): Use it.
(armv4:r-cmp-value): Use it.
(armv4:r0+value): Use it.
(armv4:byte-r->local+n): Use it.
(armv4:word-r->local+n): Use it.
 2020-06-16 21:07:23 +02:00
Danny Milosavljevic 341682f474
ARM: Avoid using (abs INT_MIN) and (- INT_MIN). 
* module/mescc/armv4/as.scm (immediate->r0): Inline abs.
(armv4:value->r): Inline abs.
(armv4:local->r): Inline abs.
(armv4:r->local+n): Inline abs.
(armv4:r-byte-mem-add): Inline abs.
(armv4:r-word-mem-add): Inline abs.
(armv4:local-ptr->r): Inline abs.
(armv4:r+value): Inline abs.
(armv4:r-cmp-value): Inline abs.
(armv4:r0+value): Inline abs.
(armv4:byte-r->local+n): Inline abs.
(armv4:word-r->local+n): Inline abs.
 2020-06-16 17:31:59 +02:00
Danny Milosavljevic 040220acee
Add ARM backend. 
* build-aux/build-guile.sh: Add ARM backend.
* lib/arm-mes/arm.M1: New file.
* module/mescc/armv4/as.scm: New file.
* module/mescc/armv4/info.scm: New file.
* module/mescc/mescc.scm: Use it.
* module/mescc/M1.scm (info->M1): Support ARM symbolic instructions,
including little endian instructions.  Align functions.
 2020-06-10 13:11:07 +02:00