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Merge pull request #11106 from vpelletier/dsp_doc_bloop 

docs/DSP: Trivial adjustment to BLOOP{,I} sub-operation order
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Pokechu22 2022-10-03 11:29:03 -07:00 committed by GitHub
parent 23806f8d60 099e6c9ab6
commit cb6d476538
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 38 additions and 14 deletions
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18
Source/DSPSpy/main_spy.cpp
View File

@ -149,21 +149,17 @@ void print_reg_block(int x, int y, int sel, const u16* regs, const u16* compare_
{
for (int i = 0; i < 8; i++)
{
// Do not even display the loop stack registers.
const int reg = j * 8 + i;
u8 color1 = regs[reg] == compare_regs[reg] ? CON_BRIGHT_WHITE : CON_BRIGHT_RED;
CON_SetColor(sel == reg ? CON_BRIGHT_YELLOW : CON_GREEN);
CON_Printf(x + j * 9, i + y, "%s ", reg_names[reg]);
if (j != 1 || i < 4)
for (int k = 0; k < 4; k++)
{
u8 color1 = regs[reg] == compare_regs[reg] ? CON_BRIGHT_WHITE : CON_BRIGHT_RED;
for (int k = 0; k < 4; k++)
{
if (sel == reg && k == small_cursor_x && ui_mode == UIM_EDIT_REG)
CON_SetColor(CON_BRIGHT_CYAN);
else
CON_SetColor(color1);
CON_Printf(x + 4 + j * 9 + k, i + y, "%01x", (regs[reg] >> ((3 - k) * 4)) & 0xf);
}
if (sel == reg && k == small_cursor_x && ui_mode == UIM_EDIT_REG)
CON_SetColor(CON_BRIGHT_CYAN);
else
CON_SetColor(color1);
CON_Printf(x + 4 + j * 9 + k, i + y, "%01x", (regs[reg] >> ((3 - k) * 4)) & 0xf);
}
}
}

25
Source/DSPSpy/tests/st3_test.ds Normal file
View File

@ -0,0 +1,25 @@
; This test checks when $st3 gets decremented during BLOOP{,I} iterations.
; Expected $st3 values are: 2, 1, 0x0b88, 2, 1, 0x0b88.
incdir "tests"
include "dsp_base.inc"
test_main:
LRI $ac0.l, #2
BLOOP $ac0.l, last_of_bloop
CALL send_back
NOP
NOP
last_of_bloop:
NOP
CALL send_back
BLOOPI #2, last_of_bloopi
CALL send_back
NOP
NOP
last_of_bloopi:
NOP
CALL send_back
JMP end_of_test

9
docs/DSP/GameCube_DSP_Users_Manual/GameCube_DSP_Users_Manual.tex
View File

@ -46,7 +46,7 @@
% Document front page material
\title{\textbf{\Huge GameCube DSP User's Manual}}
\author{Reverse-engineered and documented by Duddie \\ \href{mailto:duddie@walla.com}{duddie@walla.com}}
\date{\today\\v0.1.4}
\date{\today\\v0.1.5}
% Title formatting commands
\newcommand{\OpcodeTitle}[1]{\subsection{#1}\label{instruction:#1}}
@ -262,6 +262,7 @@ The purpose of this documentation is purely academic and it aims at understandin
0.1.2 & 2022.05.21 & Pokechu22 & Fixed ``ILLR'' typo in Instruction Memory section \\ \hline
0.1.3 & 2022.05.27 & Pokechu22 & Renamed \texttt{CMPAR} instruction to \texttt{CMPAXH} \\ \hline
0.1.4 & 2022.06.02 & Pokechu22 & Fixed typos; added sections on 16-bit and 40-bit modes and on main and extended opcode writing to the same register. \\ \hline
0.1.5 & 2022.09.29 & vpelletier & Fixed \texttt{BLOOP} and \texttt{BLOOPI} suboperation order \\ \hline
\end{tabular}
\end{table}
@ -1664,10 +1665,11 @@ A ``-'' indicates that the flag retains its previous value, a ``0'' indicates th
// On real hardware, the below does not happen,
// this opcode only sets stack registers
WHILE ($st3--)
WHILE ($st3)
DO
EXECUTE_OPCODE($pc)
WHILE($pc != $st2)
$st3--
$pc = $st0
END
$pc = addrA + 1
@ -1702,10 +1704,11 @@ A ``-'' indicates that the flag retains its previous value, a ``0'' indicates th
// On real hardware, the below does not happen,
// this opcode only sets stack registers
WHILE ($st3--)
WHILE ($st3)
DO
EXECUTE_OPCODE($pc)
WHILE($pc != $st2)
$st3--
$pc = $st0
END
$pc = addrA + 1