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| # 13:27:06 | jero | hello |
| # 13:34:12 | jero | anyone knows if arm926t is the correct target for a TI AM1808 ? |
| # 13:34:57 | jero | spec mentions its core is an ARM926EJ-S |
| # 13:35:32 | kos_tom | yes, correct, arm926t is good. |
| # 13:35:54 | y_morin | jero: arm926ej-s is also correct, as per gcc's man page. |
| # 13:37:05 | jero | do you know if there is significant difference between 926t and 926ej-s ? |
| # 13:38:06 | y_morin | gcc-4.3.4 here does not mention arm926t, only arm926ej-s |
| # 13:38:23 | y_morin | so I don't know... |
| # 13:38:31 | jero | ohoh |
| # 13:39:00 | leming | 926t is just missing edsp and java extensions |
| # 13:39:00 | olistudent | parts #crosstool-ng |
| # 13:39:14 | jero | oh i see |
| # 13:39:18 | y_morin | jero: but 926t should be arm+thumb, while 926ej-s has jazelle (aka java) + dsp. |
| # 13:39:30 | y_morin | Hm. leming was faster than me! ;-) |
| # 13:39:43 | leming | ;) |
| # 13:39:51 | jero | does that affect gcc compiling c/c++ code ? |
| # 13:40:07 | leming | not really, you have to specify to use those extra options |
| # 13:40:41 | y_morin | jero: arm926ej-s: http://www.arm.com/products/processors/classic/arm9/arm926.php |
| # 13:40:55 | leming | the arm docs do the best job of explaining the differences |
| # 13:41:32 | y_morin | jero: also, it seems arm926t is the name by which ej-s goes in the Linux kernel: http://old.nabble.com/Re:-Arm-926ejs-questions-td10674608.html |
| # 13:41:43 | jero | oh, i see |
| # 13:41:50 | y_morin | leming: do you have an arm.com pointer for 926t ? |
| # 13:42:03 | leming | not that one specifically |
| # 13:42:12 | leming | i'm sure it's there buried |
| # 13:42:20 | leming | http://gcc.gnu.org/onlinedocs/gcc/ARM-Options.html |
| # 13:42:30 | leming | this page is good reference for gcc options |
| # 13:42:51 | leming | using -march=armv5t should work just fine |
| # 13:43:16 | jero | what's the closest crosstool-ng sample config I can start from with that guy? |
| # 13:43:40 | jero | arm-unknown-linux-gnueabi and related ? |
| # 13:44:31 | leming | it's easy enough to configure |
| # 13:44:45 | y_morin | jero: probably. Start with that, then tweak arch, cpu and tune in the menuconfig |
| # 13:44:52 | leming | just choose arm, specify armv5t for architecture, software floating point |
| # 13:45:02 | y_morin | leming: yes. |
| # 13:45:30 | y_morin | leming: there's no reference to arm926t at arm.com |
| # 13:45:37 | jero | that's tricky |
| # 13:45:43 | y_morin | leming: arm926t was a TI name. |
| # 13:45:48 | leming | well, subtract the e and j, you have t |
| # 13:46:09 | leming | more or less |
| # 13:46:19 | y_morin | leming: unless s==t in your alphabet, I doubt it! ;-) |
| # 13:46:26 | leming | indeed |
| # 13:46:45 | leming | it's all the same, the processors don't have much special to configure for |
| # 13:46:56 | leming | pretty hard to get it wrong |
| # 13:47:10 | leming | i'll bbl |
| # 13:47:18 | y_morin | leming: except that different cores of the same kind (eg. arm9) may have different scheduling. |
| # 13:47:23 | jero | thanks all :) |
| # 13:47:24 | y_morin | See ya! |
| # 13:47:32 | y_morin | I meant: leming: see ya! |
| # 13:47:57 | y_morin | jero: cheers! |
| # 13:49:21 | jero | it would be nice if the menuconfig item had the corresponding gcc option next to them :) |
| # 13:50:24 | y_morin | jero: read the help entry... |
| # 13:50:31 | y_morin | ;-) |
| # 13:50:38 | jero | yeah that's why i'm saying that :) |
| # 13:50:53 | jero | to avoid browsing into the help every time |
| # 13:52:07 | y_morin | jero: OTOH, 'Architecture' --> '-march' and '--with-arch'; 'CPU' -> '-mcpu' and '--with-cpu'; 'Tune' -> '-mtune' and '--with-tune', and so on... is pretty trivial, no? :-] |
| # 13:52:30 | jero | I was confused by the help at the beginning |
| # 13:52:49 | y_morin | jero: ? |
| # 13:54:12 | y_morin | jero: the help entries are copy-pasted from the gcc man page, with a little bit of blabla specific to crosstool-NG |
| # 13:54:24 | jero | don't worry y_morin |
| # 13:54:31 | jero | i just woke up and miss coffee |
| # 13:54:47 | jero | and more importantly didnt rtfm |
| # 13:54:49 | y_morin | jero: I'm just trying to understand what puzzled you, so it could fixed if needed... |
| # 13:54:56 | y_morin | jero: :-) |
| # 13:55:36 | y_morin | needs coffee or is a zombie too! :-) |
| # 13:55:42 | jero | hehe |
| # 13:55:48 | jero | at least you must have good croissants |
| # 13:56:38 | y_morin | jero: I'm doing my own buns (brioche?) |
| # 13:56:57 | jero | with buntool-ng ? |
| # 13:57:19 | y_morin | \o/ |
| # 14:33:50 | jero | :) |
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| # 17:51:54 | y_morin | Woohoo! http://readthedocs.org/docs/gcc-python-plugin/en/latest/gcc-overview.html |
| # 17:52:10 | y_morin | Wooho again! http://readthedocs.org/docs/gcc-python-plugin/en/latest/passes.html |
| # 17:52:46 | y_morin | All that being linked from LWN: https://lwn.net/Articles/451306/ |
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