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pdp10-relocation.txt: correct descriptions of byte pointer relocations

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Mikael Pettersson 2020-05-24 15:54:01 +02:00
parent d235aac0cd
commit 67c96e0d65
1 changed files with 8 additions and 8 deletions
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doc/pdp10-relocation.txt
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@ -82,27 +82,27 @@ R_PDP10_LOCAL_W 3 uint18 (S+A) >>u 2
(S+A) must be word-aligned.
The place, P, must be half-word aligned.
R_PDP10_LOCAL_B 4 uint36 (S+A) >>u 2
R_PDP10_LOCAL_B 4 uint36 S+A
This produces a one-word local byte pointer to a 9-bit byte in the same section as the place, P.
Its P field is set to (3-((S+A)%4))*9, and its S field is set to 9.
Its P field is set to (3-((S+A)%4))*9, its S field to 9, and its Y field to (S+A) >>u 2.
Its bit 12 and I and X fields are set to zero.
The place, P, must be word-aligned.
R_PDP10_LOCAL_H 5 uint36 (S+A) >>u 2
R_PDP10_LOCAL_H 5 uint36 S+A
This produces a one-word local byte pointer to an 18-bit halfword in the same section as the place, P.
Its P field is set to (2-((S+A)%4))*9, and its S field is set to 18.
Its P field is set to (2-((S+A)%4))*9, its S field to 18, and its Y field to (S+A) >>u 2.
Its bit 12 and I and X fields are set to zero.
(S+A) must be halfword-aligned.
The place, P, must be word-aligned.
R_PDP10_GLOBAL_B 6 uint36 (S+A) >>u 2
R_PDP10_GLOBAL_B 6 uint36 S+A
This produces a one-word global byte pointer to a 9-bit byte.
Its PS field is set to 070+((S+A)%4).
Its PS field is set to 070+((S+A)%4), and its Y field to (S+A) >>u 2.
The place, P, must be word-aligned.
R_PDP10_GLOBAL_H 7 uint36 (S+A) >>u 2
R_PDP10_GLOBAL_H 7 uint36 S+A
This produces a one-word global byte pointer to an 18-bit halfword.
Its PS field is set to 075+(((S+A)%4)>>1).
Its PS field is set to 075+(((S+A)%4)>>1), and its Y field to (S+A) >>u 2.
(S+A) must be halfword-aligned.
The place, P, must be word-aligned.